WO2014094396A1 - Method for remediating soil polluted with cadmium-polychlorinated biphenyl compounds - Google Patents
Method for remediating soil polluted with cadmium-polychlorinated biphenyl compounds Download PDFInfo
- Publication number
- WO2014094396A1 WO2014094396A1 PCT/CN2013/074170 CN2013074170W WO2014094396A1 WO 2014094396 A1 WO2014094396 A1 WO 2014094396A1 CN 2013074170 W CN2013074170 W CN 2013074170W WO 2014094396 A1 WO2014094396 A1 WO 2014094396A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- soil
- cadmium
- pcbs
- contaminated soil
- polluted
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
Definitions
- the invention relates to a method for repairing contaminated soil, in particular to a method for repairing cadmium-polychlorinated biphenyl (Cd-PCBs) composite contaminated soil.
- Cd-PCBs cadmium-polychlorinated biphenyl
- Cd in the environment is easily enriched by the food chain and endangers human health.
- the data show that Cd will bind to high molecular organic compounds containing hydroxyl, amino and sulfhydryl groups, which will inhibit many enzyme systems, affecting the normal function of liver, kidney and other organs, and also induce osteoporosis, causing 'bone pain'.
- Cd has strong teratogenic, carcinogenic and mutagenic effects on animals, see: Document 6, Zhou Qixing, Kong Fanxiang, Zhu Lin, Ecotoxicology [M], Beijing: Science Press, 2004.
- Phytoremediation refers to the use of plants to transfer, contain or transform toxic and harmful pollutants in environmental media to make them harmless to the environment, so that the polluted environment can be repaired and treated.
- Document 7 Cunningham SD, Shann JR, Crowley DR , et al. Phytoremediation of contaminated water and soil, Phytoremediation of Soil and Water Contaminants [R], USA: American Chemical Society, 1997, 2-17; Document 8, Zhou QX, Cai Z, Zhang ZN, Liu WT , Ecological remediation Of hydrocarbon contaminated soils with weed plants [J] , Journal of Resources and Ecology, 2011, 2(2): 97-105.
- phytoremediation As a green in-situ remediation technology, phytoremediation has the characteristics of low cost, small amount of engineering and low technical requirements, and it will not cause secondary pollution and damage the physical and chemical properties of the soil. It can beautify the environment while being repaired and easily accepted by the public. More and more attention, see: Document 9, Zhou Qixing, Song Yufang, Principles and Methods for Remediation of Polluted Soils [M], Beijing, Science Press, 2004. The key to using phytoremediation technology to control heavy metals in contaminated soils is to screen out the corresponding super-accumulated plants. The Cd super-accumulating plants reported at home and abroad have Thlaspi caerulescens and cones.
- Vegetables (Rorppa globosa), Mirabilis (Mirabilis jalapa L.) and A. paniculata (Arabis paniculata L.) And so on.
- Studies have shown that as maidenhair plant flowers (Tagetes patula L.) Can grow normally in serious pollution of soil Cd, with a strong ability to absorb and transfer of Cd, in line with the main features of Hyperaccumulator [Zhou Qixing, Wang Lin, Ren Liping et al. A method for repairing cadmium-contaminated soil by using flower plant peacock grass, China, 2007101590398(P), 2009-06-24. Therefore, the use of flower plant peacock grass to repair Cd-PCBs compound contaminated soil has a certain theoretical basis.
- the present invention is directed to the above-described analysis technique, there is provided a repairing Cd - a composite PCB contaminated soils (Cd-PCBs), the method utilizes the plant Tagetes patula flowers (Tagetes patula L.) Cd-PCBs repair complex pollution
- the soil has low cost and high operability, and does not damage the soil structure, avoid secondary pollution, and can also beautify the environment.
- the whole plant is removed from the contaminated soil and disposed of properly, including as an ornamental flower for sale or by centralized safe landfill and incineration.
- the peafowl planted in the Cd-PCBs compound contaminated soil can absorb Cd from the soil and transfer to the ground.
- the root system and its secreted organic small molecules and H + and rhizosphere microorganisms are also used.
- the PCBs in the soil are effectively degraded and removed.
- the peacock grass root system and its secreted organic small molecules and H + and rhizosphere microorganisms are used to carry out the PCBs in the soil.
- PCBs have the ability to promote the absorption of peacock grass and accumulate Cd in the soil. Therefore, the use of peacock grass can promote the repair of Cd-PCBs complex contaminated soil.
- the peacock is a genus of marigold, belonging to the genus Heliconia, which is an annual herbaceous flower with good ornamental value. Its plant height is 20-40 cm, its plant type is compact, its branches are clustered, its stem is purple, its leaves are opposite, and its shape is feathery. Split, lobes lanceolate, leaf margins with obvious oil gland points; capitate terminal, single or double petals; flowers with reddish brown, yellowish brown, yellowish, purple-red spots, flower shape similar to marigold, But the smaller and more numerous; when flowering, on the branches with short stumps, the flowers of yellow orange and orange are full of hair, which is beautiful and delicious. Peacock has a good ornamental value, suitable for potted plants, ground plants and cut flowers.
- the invention has the advantages that the peacock has strong adaptability, can be propagated by sowing or cutting, and is easy to cultivate and manage; relatively drought-tolerant, and the soil and fertilizer requirements are not strict; relatively cold-resistant, can withstand the invasion of early frost.
- peafowl has better tolerance and Cd accumulation ability under the combined pollution of Cd-PCBs.
- the plants are mature, they are removed from the contaminated soil and safely landfilled or incinerated to effectively and quickly control the contaminated soil of Cd-PCBs.
- the engineering quantity is small and the technical requirements are not high, and the soil structure can be improved and the environment beautified.
- T4 1-500 (T4), 10-0 (T5), 10-50 (T6), 10-100 (T7), 10-500 (T8), 50-0 (T9), 50-50 (T10) 50-100 (T11), 50-500 (T12), the concentration of pollutants added to each treatment group ⁇ Cd ⁇ ⁇ PCBs, Cd concentration unit is mg / kg, PCBs concentration unit is ⁇ g / kg, of which Cd is analytically pure CdCl 2 ⁇ 2.5H 2 O 2 , PCBs are added in the form of a standard ratio of PCB18 and PCB28 of 1:1. 2kg per pot of soil, after adding pollutants, balance for 3 weeks for use.
- flower seedlings were planted, and the seeds were immersed in 10% hydrogen peroxide for 10 minutes, rinsed with distilled water, and placed on the seedling tray to keep the soil moist.
- the seedling height is 5-8 cm, and the seedlings with the same growth are selected and transplanted into the well-balanced contaminated soil with 3 pots per pot.
- the water is appropriately watered according to the water content of the soil in the pot every day, so that the soil water content is kept at 60-80% of the field water holding capacity, and the greenhouse is properly ventilated.
- the plants were harvested.
- the harvested samples were divided into four parts: root, stem, leaf and flower. They were rinsed with tap water, rinsed with distilled water, drained, and killed at 105 ° C for 20 minutes, then at 65 Dry at °C to constant weight, weigh the dry weight and smash it for later use.
- the plant samples were digested with a 3:1 volume ratio of nitric acid-hydrogen peroxide, and the Cd content thereof was determined by an atomic absorption spectrophotometer.
- the cumulative amount of Cd in different parts of the peafowl plant is shown in Table 2. It can be seen from Table 2 that the cumulative amount of Cd in various parts of the peafowl plant increases with the increase of the Cd concentration in the contaminated soil. Under the same Cd pollution stress, the accumulation of Cd in different parts of peacock grass showed different rules with the change of PCBs concentration in the treatment group: when Cd pollution concentration was 1mg/kg, Cd-PCBs combined pollution stress under peacock grass The cumulative amount of Cd in each part was larger than that in the corresponding single Cd pollution treatment group.
- the enrichment factor refers to the ratio of the Cd content in the aboveground part of the plant to the Cd content in the treated soil.
- the transfer coefficient refers to the ratio of the Cd content in the aboveground and underground parts of the plant. It can be seen from Table 3 that the enrichment factor of Cd for peacock grass is greater than 1 under each pollution stress, and 35.14 for the T3 treatment group, indicating that peacock has a strong ability to transfer heavy metal Cd from soil to aboveground. .
- the enrichment factor of peafowl under Cd-PCBs combined pollution stress was higher than that of the corresponding single Cd pollution treatment group, indicating that the presence of PCBs increased the ability of peacock grass to transfer Cd to the aerial part of soil.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mycology (AREA)
- Biotechnology (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Botany (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Pretreatment Of Seeds And Plants (AREA)
Abstract
Disclosed is a method for remediating soil polluted with cadmium-polychlorinated biphenyl compounds, comprising: soaking Tagetes patula seeds with 10% hydrogen peroxide for 10 min and then rinsing with distilled water, and spot-sowing in a seedling raising pot; transplanting into soil polluted with cadmium-polychlorinated biphenyl compounds after the Tagetes patula young seedlings grow to 5-8 cm, putting in a greenhouse for cultivation, and applying an appropriate amount of water, so that the soil water content is kept at 60-80% of the field capacity; and removing the whole plants from the polluted soil and handling properly after the Tagetes patula grows to be mature, then planting the Tagetes patula in the soil polluted with cadmium-polychlorinated biphenyl compounds for the second time, and repeating the above operations until the content of cadmium in the soil reaches environmental safety standards. The present invention has the advantages of: Tagetes patula has strong adaptability and can be propagated by means of sowing or cutting, is easy to cultivation and manage and is resistant to drought and cold; Tagetes patula has better tolerance and cadmium accumulation capability in soil polluted with cadmium-polychlorinated biphenyl combined, and can effectively and rapidly remediate polluted soil, improve soil structure and beautify the environment.
Description
技术领域 Technical field
本发明涉及污染土壤的修复方法，特别是一种修复镉-多氯联苯（Cd-PCBs）复合污染土壤的方法。 The invention relates to a method for repairing contaminated soil, in particular to a method for repairing cadmium-polychlorinated biphenyl (Cd-PCBs) composite contaminated soil.
技术背景 technical background
由于矿山开采、污水灌溉和磷矿粉作为磷肥使用等活动，造成越来越多的农业土壤受到重金属镉（Cd）的污染。据统计，我国农田Cd污染土壤在1980年为0.93万公顷，1989年为1.33万公顷，而2001年农业部对全国24个省320个重点污染区农田的调查结果显示Cd污染农田已达27.86万公顷，参见：文献1，王凯荣，我国农田镉污染现状及其治理利用对策[J].
农业环境保护, 1997, 16(6): 274 - 278；文献2，中国社会科学院环境与发展研究中心. 中国环境与发展评论（第1卷）[M]. 北京，
社会科学文献出版社,
2001。Cd污染农田会使粮食减产，甚至危害食品安全，部分地区的农田土壤Cd含量超过200mg/kg，所产稻米和小麦的籽实中Cd含量超过了1.0mg/kg，参见：文献3，熊愈辉，镉污染土壤植物修复研究进展[J]，
安徽农业科学, 2007, 35(22):
6876-6878。而电子垃圾的随意丢弃和拆解回收会使Cd和PCBs进入土壤环境，形成更加复杂的复合污染，参见：文献4，周启星，复合污染生态学[M]. 北京:
中国环境科学出版社, 1995； 文献5: Wong MH, Wu SC, Deng WJ, et al， Export of toxic chemicals
- A review of the case of uncontrolled electronic-waste recycling [J]，
Environmental Pollution, 2007, 149: 131-140。
Due to activities such as mining, sewage irrigation and phosphate rock use as phosphate fertilizer, more and more agricultural soils are polluted by heavy metal cadmium (Cd). According to statistics, the Cd-contaminated soil in China's farmland was 9,300 hectares in 1980 and 13,300 hectares in 1989. In 2001, the Ministry of Agriculture's survey of 320 key polluted areas in 24 provinces across the country showed that Cd-contaminated farmland had reached 278,600. Hectares, see: Document 1, Wang Kairong, China's farmland cadmium pollution status and its management and utilization strategies [J].
Agricultural Environmental Protection, 1997, 16(6): 274 - 278; Document 2, Center for Environmental and Development Studies, Chinese Academy of Social Sciences. China Environment and Development Review (Volume 1) [M]. Beijing,
Social Science Literature Publishing House,
2001. Cd polluted farmland will reduce grain production and even harm food safety. In some areas, the Cd content of farmland soil exceeds 200mg/kg, and the Cd content of the produced rice and wheat seeds exceeds 1.0mg/kg. See: Document 3, Xiong Yuhui, Cadmium Research progress on phytoremediation of contaminated soil [J],
Anhui Agricultural Sciences, 2007, 35(22):
6876-6878. The random disposal and dismantling of e-waste will cause Cd and PCBs to enter the soil environment and form more complex composite pollution. See Document 4, Zhou Qixing, Compound Pollution Ecology [M]. Beijing:
China Environmental Science Press, 1995; Document 5: Wong MH, Wu SC, Deng WJ, et al, Export of toxic chemicals
- A review of the case of uncontrolled electronic-waste recycling [J],
Environmental Pollution, 2007, 149: 131-140.
环境中的Cd容易通过食物链富集并危害人体健康。资料显示，Cd会与含羟基、氨基和巯基的高分子有机物结合，使许多酶***受到抑制，从而影响肝、肾等器官的正常功能，还会诱发骨质疏松，引起'骨痛病'。特别是，Cd对动物具有较强的致畸、致癌和致突变作用，参见：文献6，周启星、
孔繁翔、 朱琳， 生态毒理学[M]， 北京:科学出版社, 2004。
Cd in the environment is easily enriched by the food chain and endangers human health. The data show that Cd will bind to high molecular organic compounds containing hydroxyl, amino and sulfhydryl groups, which will inhibit many enzyme systems, affecting the normal function of liver, kidney and other organs, and also induce osteoporosis, causing 'bone pain'. In particular, Cd has strong teratogenic, carcinogenic and mutagenic effects on animals, see: Document 6, Zhou Qixing,
Kong Fanxiang, Zhu Lin, Ecotoxicology [M], Beijing: Science Press, 2004.
植物修复（phytoremediation）是指利用植物转移、容纳或转化环境介质中有毒有害污染物，使其对环境无害，使污染环境得到修复与治理，参见：文献7，Cunningham
SD, Shann JR, Crowley DR, et al. Phytoremediation of contaminated water and
soil，Phytoremediation of Soil and Water Contaminants[R]，USA: American Chemical
Society,1997, 2-17；文献8， Zhou QX, Cai Z, Zhang ZN, Liu WT ， Ecological
remediation of hydrocarbon contaminated soils with weed plants [J] ，Journal of
Resources and Ecology, 2011, 2(2):
97-105。植物修复作为绿色原位修复技术具有成本低、工程量小和技术要求不高等特点，而且不会造成二次污染和破坏土壤理化性质，在修复污染的同时可以美化环境，容易得到公众接受，受到了越来越多的关注，参见：文献9，周启星、宋玉芳，
污染土壤修复原理与方法[M]，
北京，科学出版社，2004。采用植物修复技术治理污染土壤中的重金属的关键是筛选出相应的超累积植物，国内外报道的Cd超累积植物有天蓝遏蓝菜（Thlaspi
caerulescens）、 球果
菜（Rorppa globosa）、 紫茉莉（Mirabilis
jalapaL.）和圆锥南芥（Arabis
paniculataL.）等。研究表明，作为花卉植物的孔雀草（Tagetes
patulaL.）在Cd污染严重土壤中可以正常生长，对Cd具有较强的吸收和转移能力，符合超富集植物的主要特征[周启星,
王林、任丽萍等，一种利用花卉植物孔雀草修复治理镉污染土壤的方法，中国，2007101590398（P），
2009-06-24。因此，利用花卉植物孔雀草修复Cd-PCBs复合污染土壤具有一定的理论基础。Phytoremediation refers to the use of plants to transfer, contain or transform toxic and harmful pollutants in environmental media to make them harmless to the environment, so that the polluted environment can be repaired and treated. See: Document 7, Cunningham SD, Shann JR, Crowley DR , et al. Phytoremediation of contaminated water and soil, Phytoremediation of Soil and Water Contaminants [R], USA: American Chemical Society, 1997, 2-17; Document 8, Zhou QX, Cai Z, Zhang ZN, Liu WT , Ecological remediation Of hydrocarbon contaminated soils with weed plants [J] , Journal of Resources and Ecology, 2011, 2(2): 97-105. As a green in-situ remediation technology, phytoremediation has the characteristics of low cost, small amount of engineering and low technical requirements, and it will not cause secondary pollution and damage the physical and chemical properties of the soil. It can beautify the environment while being repaired and easily accepted by the public. More and more attention, see: Document 9, Zhou Qixing, Song Yufang, Principles and Methods for Remediation of Polluted Soils [M], Beijing, Science Press, 2004. The key to using phytoremediation technology to control heavy metals in contaminated soils is to screen out the corresponding super-accumulated plants. The Cd super-accumulating plants reported at home and abroad have Thlaspi caerulescens and cones. Vegetables (Rorppa globosa), Mirabilis (Mirabilis jalapa L.) and A. paniculata (Arabis paniculata L.) And so on. Studies have shown that as maidenhair plant flowers (Tagetes patula L.) Can grow normally in serious pollution of soil Cd, with a strong ability to absorb and transfer of Cd, in line with the main features of Hyperaccumulator [Zhou Qixing, Wang Lin, Ren Liping et al. A method for repairing cadmium-contaminated soil by using flower plant peacock grass, China, 2007101590398(P), 2009-06-24. Therefore, the use of flower plant peacock grass to repair Cd-PCBs compound contaminated soil has a certain theoretical basis.
发明内容 Summary of the invention
本发明的目的是针对上述技术分析，提供一种修复镉-多氯联苯（Cd-PCBs）复合污染土壤的方法，该方法利用花卉植物孔雀草（Tagetes
patulaL.）修复Cd-PCBs复合污染的土壤，成本低、可操作性强，而且不会破坏土壤结构、避免造成二次污染，同时还可以起到美化环境的作用。The present invention is directed to the above-described analysis technique, there is provided a repairing Cd - a composite PCB contaminated soils (Cd-PCBs), the method utilizes the plant Tagetes patula flowers (Tagetes patula L.) Cd-PCBs repair complex pollution The soil has low cost and high operability, and does not damage the soil structure, avoid secondary pollution, and can also beautify the environment.
本发明的技术方案： The technical solution of the invention:
一种修复镉-多氯联苯复合污染土壤的方法，利用花卉植物孔雀草（Tagetes
patulaL.）修复Cd-PCBs复合污染的土壤，步骤如下：: PCB-contaminated soil composite method using patula flower plants (Tagetes patula L.) Soil contaminated Cd-PCBs composite repair, the following steps - one kind cadmium Repair
1 ）将孔雀草的种子用10%双氧水浸泡10分钟后以蒸馏水冲洗干净，点播于育苗盘中，并保持土壤湿润； 1) Soak the seeds of peacock grass with 10% hydrogen peroxide for 10 minutes, rinse with distilled water, place on the seedling tray, and keep the soil moist;
2
）待孔雀草幼苗生长至5-8厘米后移植到Cd-PCBs复合污染土壤中，放置温室中栽培，适量浇水使土壤含水量保持在田间持水量的60-80%； 2
After the peacock grass seedlings grow to 5-8 cm, they are transplanted into Cd-PCBs compound contaminated soil, placed in a greenhouse for cultivation, and watered in an appropriate amount to maintain the soil water content in the field water holding capacity of 60-80%;
3
）当孔雀草生长成熟以后，将植株整体从污染土壤中移除并妥善处理，再在Cd-PCBs复合污染土壤中种植第二茬孔雀草，重复上述操作，直到土壤中的Cd含量达到环境安全标准。 3
After the peacock grass matures, the whole plant is removed from the contaminated soil and disposed of properly, and then the second peacock grass is planted in the Cd-PCBs compound contaminated soil, and the above operation is repeated until the Cd content in the soil reaches environmental safety. standard.
所述 将植株整体从污染土壤中移除并妥善处理包括 作为观赏花卉出售或采用集中安全填埋、焚烧方式处理。 The whole plant is removed from the contaminated soil and disposed of properly, including as an ornamental flower for sale or by centralized safe landfill and incineration.
本发明的机理分析： Mechanism analysis of the invention:
在Cd-PCBs复合污染土壤中种植的孔雀草能从土壤中吸收Cd并向地上部转移，在孔雀草生长过程中还利用其根系及其分泌的有机小分子和H+以及根际微生物，对土壤中的PCBs进行有效降解和去除。当孔雀草生长成熟以后，将植株整体从污染土壤中移除，可去除土壤中过量Cd；同时利用孔雀草根系及其分泌的有机小分子和H+以及根际微生物，对土壤中的PCBs进行有效降解和去除，或者使其毒性降低，从而有效治理Cd-PCBs复合污染土壤。特别是，在Cd-PCBs复合污染土壤中，PCBs有促进孔雀草吸收、积累土壤中Cd的能力，因此利用孔雀草可促进Cd-PCBs复合污染土壤的修复。The peafowl planted in the Cd-PCBs compound contaminated soil can absorb Cd from the soil and transfer to the ground. During the growth of the peacock grass, the root system and its secreted organic small molecules and H + and rhizosphere microorganisms are also used. The PCBs in the soil are effectively degraded and removed. When the peacock grass grows mature, the whole plant is removed from the contaminated soil, which can remove excess Cd in the soil. At the same time, the peacock grass root system and its secreted organic small molecules and H + and rhizosphere microorganisms are used to carry out the PCBs in the soil. Effectively degrade and remove, or reduce its toxicity, so as to effectively treat Cd-PCBs complex contaminated soil. In particular, in Cd-PCBs composite contaminated soil, PCBs have the ability to promote the absorption of peacock grass and accumulate Cd in the soil. Therefore, the use of peacock grass can promote the repair of Cd-PCBs complex contaminated soil.
孔雀草为菊科万寿菊属植物，属一年生草本花卉，具有很好的观赏价值；其株高20-40厘米，株型紧凑，多分枝呈丛生状，茎带紫色；叶对生，羽状***，裂片披针形，叶缘有明显的油腺点；头状花序顶生，单瓣或重瓣；花色有红褐、黄褐、淡黄、***斑点等，花形与万寿菊相似，但较小朵而繁多；开花时，在矮墩墩多分枝的棵儿上，黄橙橙的花朵布满梢头，显得绚丽可爱。孔雀草有很好的观赏价值，适宜盆栽、地栽和做切花。
The peacock is a genus of marigold, belonging to the genus Heliconia, which is an annual herbaceous flower with good ornamental value. Its plant height is 20-40 cm, its plant type is compact, its branches are clustered, its stem is purple, its leaves are opposite, and its shape is feathery. Split, lobes lanceolate, leaf margins with obvious oil gland points; capitate terminal, single or double petals; flowers with reddish brown, yellowish brown, yellowish, purple-red spots, flower shape similar to marigold, But the smaller and more numerous; when flowering, on the branches with short stumps, the flowers of yellow orange and orange are full of hair, which is beautiful and lovely. Peacock has a good ornamental value, suitable for potted plants, ground plants and cut flowers.
本发明的优点：孔雀草适应性强，可通过播种或扦插进行繁殖，栽培管理容易；比较耐旱，对土壤和肥料要求不严格；比较耐寒，经得起早霜的侵袭。实验表明，孔雀草在Cd-PCBs复合污染下具有较好的耐性和对Cd累积能力。当植株成熟后将其整体从污染土壤中移除并进行安全填埋或焚烧，可有效、快速治理Cd-PCBs污染土壤。同时，作为绿色原位修复技术，工程量小、技术要求不高，还可以改善土壤结构，美化环境。
The invention has the advantages that the peacock has strong adaptability, can be propagated by sowing or cutting, and is easy to cultivate and manage; relatively drought-tolerant, and the soil and fertilizer requirements are not strict; relatively cold-resistant, can withstand the invasion of early frost. Experiments show that peafowl has better tolerance and Cd accumulation ability under the combined pollution of Cd-PCBs. When the plants are mature, they are removed from the contaminated soil and safely landfilled or incinerated to effectively and quickly control the contaminated soil of Cd-PCBs. At the same time, as a green in-situ remediation technology, the engineering quantity is small and the technical requirements are not high, and the soil structure can be improved and the environment beautified.
具体实施方式 detailed description
一种修复镉-多氯联苯复合污染土壤的方法，利用花卉植物孔雀草（Tagetes
patulaL.）修复Cd-PCBs复合污染的土壤，孔雀草修复Cd-PCBs复合污染土壤条件下Cd的温室盆栽实验：盆栽实验地点在南开大学泰达学院的温室内，清洁土壤采自广东省揭阳市仙桥区。本实验共设13个处理组，每个处理组重复3次，Cd-PCBs的添加浓度为0-0（CK）、1-0（T1）、1-50(T2)、1-100(T3)、1-500(T4)、10-0(T5)、10-50(T6)、10-100(T7)、10-500(T8)、50-0(T9)、50-50(T10)、50-100(T11)、50-500(T12)，各处理组添加污染物的浓度ρCd×ρPCBs，Cd浓度单位为mg/kg，PCBs浓度单位为μg/kg，其中Cd以分析纯的CdCl2·2.5H2O2，PCBs以标准品PCB18和PCB28浓度比为1:1的形式添加。每盆装土2kg，添加污染物后平衡3周待用。同时进行花卉育苗，将种子放于10%双氧水浸泡灭菌十分钟后以蒸馏水冲洗干净，点播于育苗盘，并保持土壤湿润。15-20天后，苗高5-8厘米，选取长势一致的幼苗移植到平衡好的污染土壤中，每盆3棵。每天根据盆中土壤的水分情况适量浇水，使土壤含水量经常保持在田间持水量的60-80%，并让温室适当通风。A method of repairing Cd - Method Compound PCB contaminated soil, using a floricultural plant Tagetes patula (Tagetes patula L.) Cd-PCBs in soil with compound contamination, Tagetes patula repair in greenhouse soil conditions Cd Cd-PCBs polluted Compound Experiment: The pot experiment site was located in the greenhouse of TEDA College of Nankai University. The clean soil was collected from Xianqiao District, Jieyang City, Guangdong Province. A total of 13 treatment groups were set up in this experiment, and each treatment group was repeated 3 times. The concentration of Cd-PCBs added was 0-0 (CK), 1-0 (T1), 1-50 (T2), 1-100 (T3). ), 1-500 (T4), 10-0 (T5), 10-50 (T6), 10-100 (T7), 10-500 (T8), 50-0 (T9), 50-50 (T10) 50-100 (T11), 50-500 (T12), the concentration of pollutants added to each treatment group ρCd × ρPCBs, Cd concentration unit is mg / kg, PCBs concentration unit is μg / kg, of which Cd is analytically pure CdCl 2 ·2.5H 2 O 2 , PCBs are added in the form of a standard ratio of PCB18 and PCB28 of 1:1. 2kg per pot of soil, after adding pollutants, balance for 3 weeks for use. At the same time, flower seedlings were planted, and the seeds were immersed in 10% hydrogen peroxide for 10 minutes, rinsed with distilled water, and placed on the seedling tray to keep the soil moist. After 15-20 days, the seedling height is 5-8 cm, and the seedlings with the same growth are selected and transplanted into the well-balanced contaminated soil with 3 pots per pot. The water is appropriately watered according to the water content of the soil in the pot every day, so that the soil water content is kept at 60-80% of the field water holding capacity, and the greenhouse is properly ventilated.
植物生长2个月后收获植株，将收获的样品分为根、茎、叶和花四部分，分别用自来水冲洗干净，再用蒸馏水冲洗，沥去水分，在105℃杀青20分钟，然后在65℃下烘干至恒重，称量干重后粉碎备用。植物样品采用体积比为3:1的硝酸-过氧化氢法消解，用原子吸收分光光度计测定其中的Cd含量。
After 2 months of plant growth, the plants were harvested. The harvested samples were divided into four parts: root, stem, leaf and flower. They were rinsed with tap water, rinsed with distilled water, drained, and killed at 105 ° C for 20 minutes, then at 65 Dry at °C to constant weight, weigh the dry weight and smash it for later use. The plant samples were digested with a 3:1 volume ratio of nitric acid-hydrogen peroxide, and the Cd content thereof was determined by an atomic absorption spectrophotometer.
所有结果以3次重复实验数据的平均值与标准偏差表示，差异显著性采用SPSS
18.0（Duncan法）进行检验，统计显著性设为p<0.05。实验结果如下：移植2个月后孔雀草植株各部分干重如表1所示。 All results were expressed as the mean and standard deviation of the data of 3 replicates, and the difference was significant using SPSS.
The test was performed in 18.0 (Duncan method), and the statistical significance was set to p<0.05. The experimental results are as follows: The dry weight of each part of the peafowl plant after 2 months of transplantation is shown in Table 1.
表1 各处理组孔雀草植株干重（g/盆） Table 1 Dry weight of peacock plants (g/pot) of each treatment group
| 处理组 Processing group | 孔雀草地下部分干重（ g ） Partial dry weight of peacock grassland ( g ) | 孔雀草地上部分干重（ g ） Partial dry weight of peacock grass ( g ) |
| CK CK | 0.28 ±0.11 e 0.28 ±0.11 e | 2.32 ±0.78 e 2.32 ±0.78 e |
| T1 T1 | 0.14 ±0.03 d 0.14 ± 0.03 d | 2.19 ±0.47 e 2.19 ±0.47 e |
| T2 T2 | 0.06 ±0.02 bc 0.06 ± 0.02 bc | 0.57 ±0.19 b 0.57 ±0.19 b |
| T3 T3 | 0.04 ±0.01 b 0.04 ±0.01 b | 0.58 ±0.16 bc 0.58 ±0.16 bc |
| T4 T4 | 0.08 ±0.02 cd 0.08 ±0.02 cd | 0.95 ±0.28 cd 0.95 ±0.28 cd |
| T5 T5 | 0.08 ±0.02 cd 0.08 ±0.02 cd | 1.31 ±0.40 de 1.31 ±0.40 de |
| T6 T6 | 0.04 ±0.02 ab 0.04 ± 0.02 ab | 0.51 ±0.20 b 0.51 ±0.20 b |
| T7 T7 | 0.04 ±0.01 b 0.04 ±0.01 b | 0.56 ±0.07 bc 0.56 ±0.07 bc |
| T8 T8 | 0.03 ±0.01 ab 0.03 ±0.01 ab | 0.39 ±0.06 b 0.39 ±0.06 b |
| T9 T9 | 0.09 ±0.04 cd 0.09 ±0.04 cd | 1.27 ±0.39 de 1.27 ±0.39 de |
| T10 T10 | 0.02 ±0.00 a 0.02 ±0.00 a | 0.17 ±0.01 a 0.17 ±0.01 a |
| T11 T11 | 0.02 ±0.00 a 0.02 ±0.00 a | 0.18 ±0.05 a 0.18 ±0.05 a |
| T12 T12 | 0.02 ±0.00 a 0.02 ±0.00 a | 0.16 ±0.02 a 0.16 ±0.02 a |
实验结果表明：在对比于空白处理组，单Cd污染处理组（T1、T5、T9）下孔雀草地上部分干重都没有显著下降，表现出较强的耐性。在Cd处理浓度为1mg/kg和10mg/kg时，不同浓度PCBs与Cd复合时，孔雀草地下和地上部分干重没有显著性差异，但都显著低于对应的单Cd处理组（T4除外）。特别是，当Cd处理浓度低于50mg/kg时，不同浓度PCBs与Cd复合处理下孔雀草的地下和地上部分生物量没有表现出显著差异，孔雀草的生长抑制作用没有显著变化。
The experimental results showed that compared with the blank treatment group, the dry weight of the peacock grass under the single Cd pollution treatment group (T1, T5, T9) did not decrease significantly, showing strong tolerance. When the concentration of Cd was 1mg/kg and 10mg/kg, there was no significant difference in the dry weight of turfgrass grassland and aboveground part when PCBs were mixed with Cd, but they were significantly lower than the corresponding single Cd treatment group (except T4). . In particular, when the concentration of Cd was less than 50 mg/kg, the biomass of underground and aboveground parts of peacock grass under different concentrations of PCBs and Cd did not show significant difference, and the growth inhibition of peafowl did not change significantly.
在不同Cd-PCBs复合污染条件下，孔雀草植株体内不同部位对Cd累积量如表2所示。由表2可知，孔雀草植株各部位对Cd的累积量随着污染土壤中Cd浓度的增加而增加。在同一Cd污染胁迫下，孔雀草各部位对Cd的累积量随着处理组中PCBs浓度的变化表现出不同的规律：当Cd污染浓度为1mg/kg时，Cd-PCBs复合污染胁迫下孔雀草各部位对Cd的累积量均大于相应的单Cd污染处理组，其中PCBs浓度为100μg/kg和500μg/kg时，孔雀草根部和叶部对Cd的累积量显著高于单Cd处理组；当Cd污染浓度为10mg/kg时，Cd-PCBs复合污染胁迫下的孔雀草各部位对Cd
的累积量均显著高于相应的单Cd处理组；当Cd污染浓度上升到50mg/kg时，Cd-PCBs复合污染胁迫下PCBs浓度为500μg/kg时孔雀草各部位对Cd的累积量显著高于相应的单Cd处理组。这就是说，PCBs有促进孔雀草吸收、积累土壤中Cd的能力。因此，可以利用孔雀草修复Cd-PCBs复合污染土壤。
Under the combined pollution conditions of different Cd-PCBs, the cumulative amount of Cd in different parts of the peafowl plant is shown in Table 2. It can be seen from Table 2 that the cumulative amount of Cd in various parts of the peafowl plant increases with the increase of the Cd concentration in the contaminated soil. Under the same Cd pollution stress, the accumulation of Cd in different parts of peacock grass showed different rules with the change of PCBs concentration in the treatment group: when Cd pollution concentration was 1mg/kg, Cd-PCBs combined pollution stress under peacock grass The cumulative amount of Cd in each part was larger than that in the corresponding single Cd pollution treatment group. When the concentration of PCBs was 100μg/kg and 500μg/kg, the accumulation of Cd in the roots and leaves of peacock grass was significantly higher than that in the single Cd treatment group. When Cd pollution concentration is 10mg/kg, Cd-PCBs under different pollution stresses
The cumulative amount of Cd was significantly higher than that of the corresponding single Cd treatment group; when the concentration of Cd was increased to 50 mg/kg, the accumulation of Cd in the parts of peacock grass was significantly higher when the concentration of PCBs was 500 μg/kg under Cd-PCBs combined pollution stress. The corresponding single Cd treatment group. That is to say, PCBs have the ability to promote the absorption of peacock grass and accumulate Cd in the soil. Therefore, peacock grass can be used to repair Cd-PCBs composite contaminated soil.
表2 各处理组下Cd在孔雀草植株各部分的累积量(mg/kg) Table 2 Cumulative amount of Cd in various parts of peacock plant under each treatment group (mg/kg)
| 处理组 Processing group | 根部 Cd 含量 Root Cd content | 茎部 Cd 含量 Stem Cd content | 叶部 Cd 含量 Leaf Cd content | 花部 Cd 含量 Flower Cd content |
| CK CK | 7.91±1.2 h 7.91±1.2 h | 7.02±2.79 g 7.02±2.79 g | 12.37±3.96 g 12.37±3.96 g | 3.84±1.49 f 3.84±1.49 f |
| T1 T1 | 24.53±3.14 g 24.53±3.14 g | 30.46±8.31 f 30.46±8.31 f | 31.59±8.56 f 31.59±8.56 f | 9.41±0.85 e 9.41±0.85 e |
| T2 T2 | 29.81±12.59 fg 29.81±12.59 fg | 33.73±3.27 f 33.73±3.27 f | 41.26±3.32 ef 41.26±3.32 ef | 13.59±3.14 e 13.59±3.14 e |
| T3 T3 | 45.66±13.73 e 45.66±13.73 e | 44.33±5.73 f 44.33±5.73 f | 57.26±4.24 e 57.26±4.24 e | 14.35±1.41 e 14.35±1.41 e |
| T4 T4 | 40.72±10.78 ef 40.72±10.78 ef | 36.4±1.35 f 36.4±1.35 f | 52.32±7.17 e 52.32±7.17 e | 14.52±3.00 e 14.52±3.00 e |
| T5 T5 | 81.44±11.34 d 81.44±11.34 d | 103.64±19.48 e 103.64±19.48 e | 162.51±27.06 d 162.51±27.06 d | 49.79±13.74 d 49.79±13.74 d |
| T6 T6 | 206.55±17.16 c 206.55±17.16 c | 187.56±9.54 d 187.56±9.54 d | 234.64±16.16 c 234.64±16.16 c | 79.87±2.06 c 79.87±2.06 c |
| T7 T7 | 224.7±14.18 c 224.7±14.18 c | 227.16±8.53 d 227.16±8.53 d | 258.07±23.12 c 258.07±23.12 c | 81.08±9.63 c 81.08±9.63 c |
| T8 T8 | 251.15±23.02 c 251.15±23.02 c | 241.56±14.31 d 241.56±14.31 d | 240.38±31.58 c 240.38±31.58 c | 122.56±20.68 b 122.56±20.68 b |
| T9 T9 | 767.55±158.6 b 767.55±158.6 b | 549.53±118.84 c 549.53±118.84 c | 581.63±126.73 b 581.63±126.73 b | 147.9±40.25 b 147.9±40.25 b |
| T10 T10 | 880.64±115.75 b 880.64±115.75 b | 794.81±196.71 b 794.81±196.71 b | 557.59±103.2 b 557.59±103.2 b | 464.07±40.38 a 464.07±40.38 a |
| T11 T11 | 921.52±232.62 b 921.52±232.62 b | 612.4±54.4 c 612.4±54.4 c | 611.8±90.61 b 611.8±90.61 b | 382.04±43.15 a 382.04±43.15 a |
| T12 T12 | 1511.03±155.93 a 1511.03±155.93 a | 976.6±83.29 a 976.6±83.29 a | 835.93±139.49 a 835.93±139.49 a | 390.85±55.14 a 390.85±55.14 a |
富集系数是指植物地上部Cd含量和处理土壤中Cd含量的比值，转移系数是指植物地上部和地下部Cd含量的比值。由表3可知，各污染胁迫下孔雀草对Cd的富集系数都大于1，T3处理组时更是达到了35.14，表现出孔雀草有很强的从土壤中向地上部位转移重金属Cd的能力。孔雀草在Cd-PCBs复合污染胁迫下的富集系数均高于相应的单Cd污染处理组，即说明PCBs的存在提高了孔雀草对土壤中Cd向地上部位转移的能力。
The enrichment factor refers to the ratio of the Cd content in the aboveground part of the plant to the Cd content in the treated soil. The transfer coefficient refers to the ratio of the Cd content in the aboveground and underground parts of the plant. It can be seen from Table 3 that the enrichment factor of Cd for peacock grass is greater than 1 under each pollution stress, and 35.14 for the T3 treatment group, indicating that peacock has a strong ability to transfer heavy metal Cd from soil to aboveground. . The enrichment factor of peafowl under Cd-PCBs combined pollution stress was higher than that of the corresponding single Cd pollution treatment group, indicating that the presence of PCBs increased the ability of peacock grass to transfer Cd to the aerial part of soil.
表3 不同污染处理下孔雀草对镉的富集系数和转移系数 Table 3 Enrichment factor and transfer coefficient of cadmium to cadmium under different pollution treatments
| 处理组 Processing group | 富集系数 Enrichment factor | 转移系数 Transfer coefficient |
| CK CK | -- -- | 0.92 0.92 |
| T1 T1 | 20.51 20.51 | 0.83 0.83 |
| T2 T2 | 26.91 26.91 | 0.97 0.97 |
| T3 T3 | 35.14 35.14 | 0.80 0.80 |
| T4 T4 | 31.66 31.66 | 0.81 0.81 |
| T5 T5 | 9.04 9.04 | 1.11 1.11 |
| T6 T6 | 14.84 14.84 | 0.72 0.72 |
| T7 T7 | 18.26 18.26 | 0.81 0.81 |
| T8 T8 | 19.70 19.70 | 0.79 0.79 |
| T9 T9 | 8.70 8.70 | 0.57 0.57 |
| T10 T10 | 12.08 12.08 | 0.70 0.70 |
| T11 T11 | 11.63 11.63 | 0.65 0.65 |
| T12 T12 | 14.92 14.92 | 0.50 0.50 |
总之，在Cd-PCBs复合污染胁迫下，孔雀草表现了一定的耐性及较强的对Cd的吸收和累积能力。Cd-PCBs复合污染胁迫下孔雀草的生长总体上没有显著的差异，但显著低于相应的单Cd污染处理组；而Cd-PCBs复合污染胁迫下孔雀草各部位对Cd的累积量总体上高于相应单Cd处理组，即PCBs的存在促进了孔雀草对Cd的吸收和累积能力。因此，应用花卉植物孔雀草修复Cd-PCBs复合污染土壤具有较好的潜力。
In conclusion, under the combined pollution stress of Cd-PCBs, peafowl showed certain tolerance and strong ability to absorb and accumulate Cd. There was no significant difference in the growth of peafowl under Cd-PCBs combined pollution stress, but it was significantly lower than that of the corresponding single Cd pollution treatment group. Under Cd-PCBs combined pollution stress, the accumulation of Cd was higher in all parts of peacock grass. The presence of PCBs in the corresponding single Cd treatment group promoted the ability of peacock grass to absorb and accumulate Cd. Therefore, the application of flower plant peacock grass to repair Cd-PCBs combined contaminated soil has good potential.
Claims (2)
- 一种修复镉-多氯联苯复合污染土壤的方法，其特征在于：利用花卉植物孔雀草（Tagetes patulaL.）修复Cd-PCBs复合污染的土壤，步骤如下：A method of repairing Cd - Composite Method PCB contaminated soil, characterized in that: the use of flower plants patula composite repair Cd-PCBs contaminated soil, the following steps: (Tagetes patula L.)1 ）将孔雀草的种子用10%双氧水浸泡10分钟后以蒸馏水冲洗干净，点播于育苗盘中，并保持土壤湿润；1 Soak the seeds of peacock grass with 10% hydrogen peroxide for 10 minutes, rinse with distilled water, place on the seedling tray, and keep the soil moist;2 ）待孔雀草幼苗生长至5-8厘米后移植到Cd-PCBs复合污染土壤中，放置温室中栽培，适量浇水使土壤含水量保持在田间持水量的60-80%；2 After the peacock grass seedlings grow to 5-8 cm, they are transplanted into Cd-PCBs compound contaminated soil, placed in a greenhouse for cultivation, and watered in an appropriate amount to maintain the soil water content in the field water holding capacity of 60-80%;3 ）当孔雀草生长成熟以后，将植株整体从污染土壤中移除并妥善处理，再在Cd-PCBs复合污染土壤中种植第二茬孔雀草，重复上述操作，直到土壤中的Cd含量达到环境安全标准。3 After the peacock grass matures, the whole plant is removed from the contaminated soil and disposed of properly, and then the second peacock grass is planted in the Cd-PCBs compound contaminated soil, and the above operation is repeated until the Cd content in the soil reaches environmental safety. standard.
- 根据权利要求 1 所述 修复镉-多氯联苯复合污染土壤的方法，其特征在于： 所述 将植株整体从污染土壤中移除并妥善处理包括 作为观赏花卉出售或采用集中安全填埋、焚烧方式处理。 The method for repairing cadmium-polychlorinated biphenyl composite contaminated soil according to claim 1, wherein: the whole plant is removed from the contaminated soil and properly disposed of, It is sold as ornamental flowers or treated by centralized safe landfill and incineration.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310104648.9 | 2012-12-20 | ||
| CN201310104648.9A CN103191915B (en) | 2013-03-28 | 2013-03-28 | Method for repairing cadmium-polychlorinated biphenyl co-contaminated soil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2014094396A1 true WO2014094396A1 (en) | 2014-06-26 |
| WO2014094396A8 WO2014094396A8 (en) | 2014-08-21 |
Family
ID=48714834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2013/074170 WO2014094396A1 (en) | 2012-12-20 | 2013-04-12 | Method for remediating soil polluted with cadmium-polychlorinated biphenyl compounds |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103191915B (en) |
| WO (1) | WO2014094396A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104249075A (en) * | 2014-07-21 | 2014-12-31 | 合肥工业大学 | Application of mannose to improvement of cadmium resistance and cadmium accumulation of plant and to restoration of cadmium polluted soil |
| CN113369299A (en) * | 2021-06-19 | 2021-09-10 | 江西省红壤研究所 | Method for restoring farmland with light and medium cadmium pollution by utilizing radix puerariae |
| CN115228921A (en) * | 2022-06-14 | 2022-10-25 | 安徽大学 | Method for repairing light and medium cadmium-polluted rice field soil by using polygonum hydropiper |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480625A (en) * | 2013-10-11 | 2014-01-01 | 南开大学 | Method for restoring Cd-polychlorinated dibenzofurans polluted soil by utilizing French marigold |
| CN103760259B (en) * | 2014-01-07 | 2015-04-08 | 南开大学 | Indication method for Cd-PCB (Cadmium-Polychlorinated Biphenyl) polluted soil by using maidenhair flowers |
| CN104289511B (en) * | 2014-08-21 | 2016-06-22 | 华南理工大学 | Synchronize to remove the eluent of PCBs in Soil and heavy metal and method for making and application |
| CN105638345B (en) * | 2015-12-29 | 2018-08-17 | 浙江省农业科学院 | A kind of Cadmium in Soil processing method suitable for rice field trial |
| CN107470337A (en) * | 2017-09-26 | 2017-12-15 | 湖南匡楚科技有限公司 | A kind of method using plant soil restoration |
| CN109570228A (en) * | 2018-12-11 | 2019-04-05 | 南开大学 | Halophytes summer cypress is repairing the application of cadmium-polybrominated diphenyl ethers combined contamination soil |
| CN110252800A (en) * | 2019-07-08 | 2019-09-20 | 广西博世科环保科技股份有限公司 | A method of utilizing essential oil class phytoremediation heavy metal pollution farming land |
| CN111438182A (en) * | 2020-04-28 | 2020-07-24 | 贵州大学 | Enhanced remediation method for remediating cadmium-contaminated soil by using hyper-enriched plants |
| CN114130811A (en) * | 2021-11-13 | 2022-03-04 | 北京工业大学 | Method for restoring cadmium-polychlorinated biphenyl composite polluted soil by crop rotation of astragalus sinicus and sedum plumbizincicola |
| CN114472505A (en) * | 2022-01-24 | 2022-05-13 | 北京工业大学 | Method for regulating and controlling intercropping of Sedum plumbizincicola and Astragalus sinicus to restore farmland soil compositely polluted by heavy metals and organic pollutants |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001276804A (en) * | 2000-03-31 | 2001-10-09 | Taiheiyo Cement Corp | Cleaning method for pcbs- and/or dioxins-containing soil by plant |
| CN101147914A (en) * | 2006-09-22 | 2008-03-26 | 中国科学院沈阳应用生态研究所 | Method for repairing cadmium pollution soil using with asteraeae plant |
| CN101456029A (en) * | 2007-12-14 | 2009-06-17 | 中国科学院沈阳应用生态研究所 | Cadmium pollution soil repair method using marigold |
| CN101462118A (en) * | 2007-12-19 | 2009-06-24 | 中国科学院沈阳应用生态研究所 | Method for repairing and treating soil with heavy metal pollution using daisy |
| CN101462119A (en) * | 2007-12-19 | 2009-06-24 | 中国科学院沈阳应用生态研究所 | Method for repairing and treating soil with cadmium pollution using flowering plant Indian marigold |
| CN101462117A (en) * | 2007-12-19 | 2009-06-24 | 中国科学院沈阳应用生态研究所 | Combined reinforced method for repairing cadmium polluted soil |
-
2013
- 2013-03-28 CN CN201310104648.9A patent/CN103191915B/en not_active Expired - Fee Related
- 2013-04-12 WO PCT/CN2013/074170 patent/WO2014094396A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001276804A (en) * | 2000-03-31 | 2001-10-09 | Taiheiyo Cement Corp | Cleaning method for pcbs- and/or dioxins-containing soil by plant |
| CN101147914A (en) * | 2006-09-22 | 2008-03-26 | 中国科学院沈阳应用生态研究所 | Method for repairing cadmium pollution soil using with asteraeae plant |
| CN101456029A (en) * | 2007-12-14 | 2009-06-17 | 中国科学院沈阳应用生态研究所 | Cadmium pollution soil repair method using marigold |
| CN101462118A (en) * | 2007-12-19 | 2009-06-24 | 中国科学院沈阳应用生态研究所 | Method for repairing and treating soil with heavy metal pollution using daisy |
| CN101462119A (en) * | 2007-12-19 | 2009-06-24 | 中国科学院沈阳应用生态研究所 | Method for repairing and treating soil with cadmium pollution using flowering plant Indian marigold |
| CN101462117A (en) * | 2007-12-19 | 2009-06-24 | 中国科学院沈阳应用生态研究所 | Combined reinforced method for repairing cadmium polluted soil |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104249075A (en) * | 2014-07-21 | 2014-12-31 | 合肥工业大学 | Application of mannose to improvement of cadmium resistance and cadmium accumulation of plant and to restoration of cadmium polluted soil |
| CN113369299A (en) * | 2021-06-19 | 2021-09-10 | 江西省红壤研究所 | Method for restoring farmland with light and medium cadmium pollution by utilizing radix puerariae |
| CN115228921A (en) * | 2022-06-14 | 2022-10-25 | 安徽大学 | Method for repairing light and medium cadmium-polluted rice field soil by using polygonum hydropiper |
| CN115228921B (en) * | 2022-06-14 | 2023-05-30 | 安徽大学 | Method for repairing light and medium cadmium-polluted paddy field soil by utilizing polygonum hydropiper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103191915B (en) | 2015-01-07 |
| WO2014094396A8 (en) | 2014-08-21 |
| CN103191915A (en) | 2013-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2014094396A1 (en) | Method for remediating soil polluted with cadmium-polychlorinated biphenyl compounds | |
| CN103350105B (en) | Method for associating plants and microorganisms to accumulate heavy metal cadmium in soil and application thereof | |
| Wei et al. | Phytoremediation of cadmium-contaminated soils by Rorippa globosa using two-phase planting (5 pp) | |
| CN101147914B (en) | Method for repairing cadmium pollution soil using with asteraeae plant | |
| Moameri et al. | Capability of Secale montanum trusted for phytoremediation of lead and cadmium in soils amended with nano-silica and municipal solid waste compost | |
| CN102172608B (en) | Application of artemisia stolonifera in repairing of heavy metal cadmium polluted soil | |
| CN102172607B (en) | Use of Debregeasia orientalis C. J. Chen in remediation of cadmium heavy metal contaminated soil | |
| CN101670362A (en) | Application of grain amaranth in repairing mine soil and sludge polluted by heavy metal cadmium | |
| CN102085527A (en) | Method for repairing heavy metal polluted soil by using cadmium hyper-accumulation plant lantana camara | |
| Raklami et al. | Compost and mycorrhizae application as a technique to alleviate Cd and Zn stress in Medicago sativa | |
| CN105964668A (en) | Cadmium-polluted soil restoration method | |
| CN101693252B (en) | Application of siegesbeckia herb in remediation of soil contaminated with heavy metal cadmium | |
| CN101051042A (en) | Method for screening super accumulative plant in flower plant | |
| CN108246798B (en) | Method for restoring heavy metal contaminated soil by using spray-seeding technology | |
| Sarma et al. | Phytomanagement of polycyclic aromatic hydrocarbons and heavy metals-contaminated sites in Assam, north eastern state of India, for boosting bioeconomy | |
| CN101941018B (en) | Method for remediating cadmium contaminated soil by using ornamental plant smooth joyweed | |
| Andreazza et al. | Copper phytoextraction and phytostabilization by Brachiaria decumbens Stapf. in vineyard soils and a copper mining waste. | |
| Guan et al. | GLDA and EDTA assisted phytoremediation potential of Sedum hybridum ‘Immergrunchen’for Cd and Pb contaminated soil | |
| CN102091715A (en) | Method for remediating oil-contaminated soil by using gaillardia aristata pursh flower plants | |
| Sanghamitra et al. | Heavy metal tolerance of weed species and their accumulations by phytoextraction | |
| WO2014094365A1 (en) | Method for remediating soil polluted with lead-polychlorinated biphenyl compounds | |
| Zacarías et al. | A feasibility study of perennial/annual plant species to restore soils contaminated with heavy metals | |
| CN102441562A (en) | Method for promoting broad bean in restoring and treating cadmium-polluted soil by using citric acid | |
| CN105032907A (en) | Method of combinedly-reinforced repairing pyrene-and-lead combinedly-polluted soil with scripus triqueter | |
| JP2008296181A (en) | Purification method of harmful heavy metal polluted medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13865819 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 13865819 Country of ref document: EP Kind code of ref document: A1 |