CN107081129A - A kind of charcoal and preparation method and application - Google Patents

A kind of charcoal and preparation method and application Download PDF

Info

Publication number
CN107081129A
CN107081129A CN201710295343.9A CN201710295343A CN107081129A CN 107081129 A CN107081129 A CN 107081129A CN 201710295343 A CN201710295343 A CN 201710295343A CN 107081129 A CN107081129 A CN 107081129A
Authority
CN
China
Prior art keywords
charcoal
south america
wedelia chinensis
waste water
america wedelia
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710295343.9A
Other languages
Chinese (zh)
Inventor
邓红梅
黄楚杨
李玉婵
梁欣欣
梁官成
罗梦婷
陈永亨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou University
Original Assignee
Guangzhou University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou University filed Critical Guangzhou University
Priority to CN201710295343.9A priority Critical patent/CN107081129A/en
Publication of CN107081129A publication Critical patent/CN107081129A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Water Treatment By Sorption (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention discloses a kind of charcoal and preparation method and application, charcoal is prepared using South America wedelia chinensis as raw material, and preparation method is：South America wedelia chinensis is cleaned up, dried and crushed；South America wedelia chinensis powder is placed in nitrogen, the temperature of South America wedelia chinensis powder activation is 400~700 DEG C, the time of activation is 0.5~10h；Cooling, obtains charcoal first product；Charcoal first product is crushed, charcoal is obtained；The operating method of cadmium is in charcoal reduction waste water：Cadmium concentration is 10~550mg/L in waste water, and pH value of waste water is 2~8, and charcoal dosage is 0.5~1.5mg/mL, and adsorption time is 5min~24h, and temperature is 25 DEG C, and oscillation rate is 250rpm.Charcoal of the present invention is prepared using South America wedelia chinensis as raw material, can not only adsorb heavy metal in waste water, moreover it is possible to remove the invasion danger that South America wedelia chinensis brings；The ability of the cadmium of South America wedelia chinensis charcoal absorption simultaneously is stronger.

Description

A kind of charcoal and preparation method and application
Technical field
The invention belongs to field of environment engineering technology, more particularly to a kind of charcoal and preparation method and application.
Background technology
Cadmium is the heavy metal that a kind of dissolubility is higher, toxicity is stronger, and cadmium can in vivo be enriched with, be entered by food chain Human body causes slow poisoning, a series of diseases such as anaemia, osteoporosis and kidney are damaged.However, the raw material that cadmium, which is industrial or agricultural, to be used, It is widely used in the industries such as plating, alloy, insecticide and battery manufacture, it enters environment in " three wastes " form, so as to cause cadmium It is seriously polluted exceeded.Therefore, the cadmium pollution problems demand in environment is solved.
Charcoal is a kind of environmentally friendly material, because with specific surface area is big and the characteristic such as microcellular structure, it can show Write heavy metal in ground adsorbed water body；Meanwhile, the preparation method of charcoal is relatively easy, cheap.Therefore, charcoal can be used Heavy metal cadmium in absorption waste water.
South America wedelia chinensis was listed in one of 100 kinds of Strategy of Alien Invasive Species of harm most serious in the world, 70 years 19th century Generation, South America wedelia chinensis is introduced on a large scale as a kind of greenbelt plants by many national (including China), but final outburst is caused disaster, Especially diffusion is spread in South China of China.The annidation of South America wedelia chinensis is strong, fast growth, plant productivity are high, Single excellent phytobiocoenose is easily formed after invasion and is grown in flakes, great threat is caused to local bio-diversity.But at present still Do not report：Charcoal is prepared by raw material of South America wedelia chinensis to administer waste water, reaches the effect of doulbe-sides' victory.
The content of the invention
Present invention aims to overcome that the deficiency that prior art is present, and a kind of charcoal and preparation method thereof is provided with answering With the charcoal is prepared using South America wedelia chinensis as raw material, can not only adsorb heavy metal in waste water, moreover it is possible to remove South America amphibious crab The invasion danger that chrysanthemum brings.To achieve these goals, the technical scheme taken of the present invention is：South America wedelia chinensis is preparing biology Application in charcoal.
In addition, the present invention also provides a kind of preparation method of charcoal, comprise the following steps：
South America wedelia chinensis 1a) is cleaned up, dried and be crushed to particle diameter less than 0.15mm, South America amphibious crab inulin is obtained End；
1b) by step 1a) in South America wedelia chinensis powder be placed in nitrogen, South America wedelia chinensis powder activation temperature be 400 ~700 DEG C, the time of activation is 0.5~10h；Room temperature is cooled to, that is, obtains charcoal first product；
1c) by step 1b) described in charcoal first product crush, that is, obtain charcoal, the particle diameter of the charcoal is less than 0.15mm.South America wedelia chinensis charcoal particle diameter prepared by the present invention is small, specific surface area bigger, microcellular structure is more prominent.
Be used as the improvement of above-mentioned technical proposal, the step 1a) in drying temperature be 105 DEG C.
Be used as the improvement of above-mentioned technical proposal, the step 1b) in the temperature of activation be 500 DEG C, time of activation is 4h.
In addition, the present invention also provides a kind of charcoal, the charcoal prepares gained using described method.
In addition, the present invention also provides application of the described charcoal in reduction heavy metal in waste water content.
As the improvement of above-mentioned technical proposal, the heavy metal is cadmium.
Further improved as above-mentioned technical proposal, the application of described charcoal in reduction waste water in cadmium content For：Cadmium wastewater is before charcoal is added, and cadmium concentration control is in 10~550mg/L in waste water, and pH value of waste water is controlled 2~8； Charcoal dosage is 0.5~1.5mg/mL.
Further improved as above-mentioned technical proposal, the application of described charcoal in reduction waste water in cadmium content For：Added in cadmium wastewater after charcoal, adsorption time is 5min~24h, temperature is 25 DEG C, and oscillation rate is 250rpm.
The beneficial effects of the present invention are：The present invention provides a kind of charcoal and preparation method and application, of the invention Charcoal is prepared using South America wedelia chinensis as raw material, can eliminate the invasion danger that South America wedelia chinensis brings, and can use biology Charcoal adsorbs heavy metal in waste water, such as heavy metal cadmium；Charcoal particle diameter prepared by the present invention is small, specific surface area bigger, microcellular structure More prominent, even if adding a small amount of South America wedelia chinensis charcoal in waste water, the adsorbance and adsorption rate of its heavy metal cadmium also can Obtain more excellent effect.
Brief description of the drawings
Fig. 1 is the process chart of charcoal described in the embodiment of the present invention 1~3；
Fig. 2 is the SEM shape appearance figures of charcoal described in the embodiment of the present invention 1~3；
Fig. 3 is the FTIR spectrum figure of charcoal described in the embodiment of the present invention 1~3.
Embodiment
For the object, technical solutions and advantages of the present invention are better described, below in conjunction with specific embodiment, subordinate list and attached The invention will be further described for figure.
Embodiment 1
A kind of preparation method of South America wedelia chinensis charcoal of the present invention, comprises the following steps：
1a) gather South America wedelia chinensis, the South America wedelia chinensis gathered is rinsed well, 105 DEG C dry and be crushed to particle diameter Less than 0.15mm；
1b) by step 1a) in South America wedelia chinensis powder be placed in tube type resistance furnace and activated, it is 500 to set temperature DEG C, the soak time 4h under nitrogen environmental protection；It is cooled to after room temperature and takes out, you can at the beginning of obtains South America wedelia chinensis charcoal Product；
1c) by step 1b) described in charcoal first product be crushed to particle diameter less than 0.15mm, that is, obtain South America wedelia chinensis biological Charcoal (as shown in Figure 1).
Embodiment 2
A kind of preparation method of South America wedelia chinensis charcoal of the present invention, comprises the following steps：
1a) gather South America wedelia chinensis, the South America wedelia chinensis gathered is rinsed well, 105 DEG C dry and be crushed to particle diameter Less than 0.15mm；
1b) by step 1a) in South America wedelia chinensis powder be placed in tube type resistance furnace and activated, it is 400 to set temperature DEG C, the soak time 0.5h under nitrogen environmental protection；It is cooled to after room temperature and takes out, you can at the beginning of obtains South America wedelia chinensis charcoal Product；
1c) by step 1b) described in charcoal first product be crushed to particle diameter less than 0.15mm, that is, obtain South America wedelia chinensis biological Charcoal.
Embodiment 3
A kind of preparation method of South America wedelia chinensis charcoal of the present invention, comprises the following steps：
1a) gather South America wedelia chinensis, the South America wedelia chinensis gathered is rinsed well, 105 DEG C dry and be crushed to particle diameter Less than 0.15mm；
1b) by step 1a) in South America wedelia chinensis powder be placed in tube type resistance furnace and activated, it is 700 to set temperature DEG C, the soak time 24h under nitrogen environmental protection；It is cooled to after room temperature and takes out, you can at the beginning of obtains South America wedelia chinensis charcoal Product；
1c) by step 1b) described in charcoal first product be crushed to particle diameter less than 0.15mm, that is, obtain South America wedelia chinensis biological Charcoal.
Morphology analysis (SEM), South America wedelia chinensis are carried out to South America wedelia chinensis charcoal in embodiment 1~3 The appearance structure of charcoal is as shown in Figure 2, it can be seen that South America wedelia chinensis biology carbon surface has porous and Pipe bundle structure；To reality Apply South America wedelia chinensis charcoal in example 1~3 and carry out infrared spectrum analysis, as shown in Figure 3, it can be seen that South America wedelia chinensis charcoal There is abundant functional group on surface：-OH(3448.6cm-1), aliphatic-CH2Stretching vibration (2889.2cm-1), the flexible of C=C shake Dynamic (2364.6cm-1), C-C and CO on aromatic rings3 2-(1421.5~1460.1cm-1) and cellulose, hemicellulose, lignin - OH (the 1047.3cm of upper connection-1)。
Embodiment 4
South America in a kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, the present embodiment Wedelia chinensis is prepared with the preparation method of embodiment 1, and the South America wedelia chinensis charcoal of the present embodiment cadmium in reduction waste water contains The application of amount is as follows：Cadmium wastewater is before charcoal is added, and cadmium concentration is 50mg/L in waste water, and the pH value of waste water is 6；20mL 10mg South America wedelia chinensis charcoal is added in cadmium wastewater；5min is vibrated at 25 DEG C, oscillation rate is 250rpm；Reaction terminates Afterwards, supernatant, filtering are gone, after being diluted by certain multiple, the concentration of cadmium metal after being adsorbed with NITRATE BY FLAME ATOMIC spectrophotometric determination.
Embodiment 5
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 4, difference Part is：The time of South America wedelia chinensis charcoal absorption cadmium is 2h.
Embodiment 6
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 4, difference Part is：The time of South America wedelia chinensis charcoal absorption cadmium is 24h.
Embodiment 7
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 4, difference Part is：20mg South America wedelia chinensis charcoal is added in 20mL cadmium wastewater.
Embodiment 8
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 7, difference Part is：The time of South America wedelia chinensis charcoal absorption cadmium is 2h.
Embodiment 9
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 7, difference Part is：The time of South America wedelia chinensis charcoal absorption cadmium is 24h.
Embodiment 10
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 4, difference Part is：30mg South America wedelia chinensis charcoal is added in 20mL cadmium wastewater.
Embodiment 11
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 10, area Part is not：The time of South America wedelia chinensis charcoal absorption cadmium is 2h.
Embodiment 12
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 10, area Part is not：The time of South America wedelia chinensis charcoal absorption cadmium is 24h.
Embodiment 13
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 12, area Part is not：The pH value of waste water is 2.
Embodiment 14
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 12, area Part is not：The pH value of waste water is 7.
Embodiment 15
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 12, area Part is not：The pH value of waste water is 8.
Embodiment 16
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 12, area Part is not：Cadmium concentration is 10mg/L in waste water.
Embodiment 17
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 12, area Part is not：Cadmium concentration is 200mg/L in waste water.
Embodiment 18
A kind of application of South America wedelia chinensis charcoal of the present invention cadmium content in reduction waste water, be the same as Example 12, area Part is not：Cadmium concentration is 550mg/L in waste water.
Table 1
As shown in table 1, table 1 list South America wedelia chinensis charcoal in embodiment 4~18 in reduction waste water cadmium content should With, and South America wedelia chinensis charcoal adsorption capacity, adsorption rate.The South America wedelia chinensis charcoal adsorbance of the present invention can reach 120.66mg/g (maximum be 123.5mg/g, table 1 in unlisted), adsorption rate can reach as 99.64%；Due to the present invention's Wedelia chinensis charcoal specific surface area bigger, microcellular structure in South America is more prominent, and the ability of charcoal adsorbing heavy metal cadmium is relatively Well；Meanwhile, the amount that charcoal of the present invention is added is that 0.5~1.5mg/mL is significant lower.
From table 1 it follows that the ability of South America wedelia chinensis charcoal adsorbing heavy metal cadmium of the present invention is added with charcoal Cadmium concentration, pH value of waste water and adsorption time are closely related in amount, waste water.Reference implementation example 4~6 (or embodiment 7~9 or implementation Example 10~12), the reaction time is controlled in 2h；Reference implementation example 13~18, the pH value of waste water is controlled 6~8；Ginseng Cadmium concentration in embodiment 15~18, waste water is examined to control in 50mg/L or so；Reference implementation example 4~18, charcoal dosage Control can (remarks be referred to reference to adsorption capacity and adsorption rate) in 1.0mg/mL.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than the present invention is protected The limitation of scope is protected, although being explained in detail with reference to preferred embodiment to the present invention, one of ordinary skill in the art should Understand, technical scheme can be modified or replaced on an equal basis, without departing from the essence of technical solution of the present invention And scope.

Claims (9)

1. application of the South America wedelia chinensis in charcoal is prepared.
2. a kind of preparation method of charcoal, it is characterised in that：Comprise the following steps：
South America wedelia chinensis 1a) is cleaned up, dried and be crushed to particle diameter less than 0.15mm, South America wedelia chinensis powder is obtained；
1b) by step 1a) in South America wedelia chinensis powder be placed in nitrogen, South America wedelia chinensis powder activation temperature be 400~700 DEG C, the time of activation is 0.5~10h；Room temperature is cooled to, that is, obtains charcoal first product；
1c) by step 1b) described in charcoal first product crush, that is, obtain charcoal, the particle diameter of the charcoal is less than 0.15mm.
3. preparation method as claimed in claim 3, it is characterised in that：The step 1a) in drying temperature be 105 DEG C.
4. preparation method as claimed in claim 3, it is characterised in that：The step 1b) in the temperature of activation be 500 DEG C, it is living The time of change is 4h.
5. a kind of charcoal, it is characterised in that：The charcoal is prepared using the method as described in any one of claim 2~4 Gained.
6. application of the charcoal as claimed in claim 5 in reduction heavy metal in waste water content.
7. application as claimed in claim 6, it is characterised in that：The heavy metal is cadmium.
8. application as claimed in claim 7, it is characterised in that：Cadmium wastewater is before charcoal is added, cadmium concentration in waste water Control is controlled 2~8 in 10~550mg/L, pH value of waste water；Charcoal dosage is 0.5~1.5mg/mL.
9. application as claimed in claim 8, it is characterised in that：Added in cadmium wastewater after charcoal, adsorption time is 5min~24h, temperature is 25 DEG C, and oscillation rate is 250rpm.
CN201710295343.9A 2017-04-28 2017-04-28 A kind of charcoal and preparation method and application Pending CN107081129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710295343.9A CN107081129A (en) 2017-04-28 2017-04-28 A kind of charcoal and preparation method and application

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710295343.9A CN107081129A (en) 2017-04-28 2017-04-28 A kind of charcoal and preparation method and application

Publications (1)

Publication Number Publication Date
CN107081129A true CN107081129A (en) 2017-08-22

Family

ID=59611458

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710295343.9A Pending CN107081129A (en) 2017-04-28 2017-04-28 A kind of charcoal and preparation method and application

Country Status (1)

Country Link
CN (1) CN107081129A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108178319A (en) * 2018-01-08 2018-06-19 华南师范大学 Hybridize application and administering method of the wedelia chinensis in cadmium pollution water body is administered
CN108160037B (en) * 2018-02-01 2021-02-02 佛山市铁人环保科技有限公司 Modified biochar and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130190542A1 (en) * 2006-11-08 2013-07-25 The Curators Of The University Of Missouri High surface area carbon and process for its production
CN103396857A (en) * 2013-06-25 2013-11-20 雷学军 Device and method for planting and comprehensive utilization of fast-growing plants to replace fossil energy
CN103611497A (en) * 2013-12-10 2014-03-05 四川农业大学 Method for preparing biological carbon with high nitrogen-phosphorus adsorption properties
CN104549154A (en) * 2015-01-23 2015-04-29 浙江大学 Preparation method of biological activated carbon capable of safely adsorbing cadmium in water
CN104722268A (en) * 2015-03-20 2015-06-24 浙江科技学院 Preparation method for chrysanthemum morifolium ramat straw charcoal
CN105170091A (en) * 2015-10-22 2015-12-23 南京信息工程大学 Preparation method of iron-modified reed biological carbon, and application of iron-modified reed biological carbon in treatment of phosphorus wastewater

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130190542A1 (en) * 2006-11-08 2013-07-25 The Curators Of The University Of Missouri High surface area carbon and process for its production
CN103396857A (en) * 2013-06-25 2013-11-20 雷学军 Device and method for planting and comprehensive utilization of fast-growing plants to replace fossil energy
CN103611497A (en) * 2013-12-10 2014-03-05 四川农业大学 Method for preparing biological carbon with high nitrogen-phosphorus adsorption properties
CN104549154A (en) * 2015-01-23 2015-04-29 浙江大学 Preparation method of biological activated carbon capable of safely adsorbing cadmium in water
CN104722268A (en) * 2015-03-20 2015-06-24 浙江科技学院 Preparation method for chrysanthemum morifolium ramat straw charcoal
CN105170091A (en) * 2015-10-22 2015-12-23 南京信息工程大学 Preparation method of iron-modified reed biological carbon, and application of iron-modified reed biological carbon in treatment of phosphorus wastewater

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
九三学社江苏省委员会: "《科技创新与促进江苏绿色制造发展》", 30 June 2016 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108178319A (en) * 2018-01-08 2018-06-19 华南师范大学 Hybridize application and administering method of the wedelia chinensis in cadmium pollution water body is administered
CN108178319B (en) * 2018-01-08 2021-07-13 华南师范大学 Application of hybrid wedelia chinensis in treatment of cadmium-polluted water body and treatment method
CN108160037B (en) * 2018-02-01 2021-02-02 佛山市铁人环保科技有限公司 Modified biochar and preparation method thereof

Similar Documents

Publication Publication Date Title
Min et al. Removal of nitrogen and phosphorus pollutants from water by FeCl3-impregnated biochar
Jin et al. Batch and fixed-bed biosorption of Cd (II) from aqueous solution using immobilized Pleurotus ostreatus spent substrate
CN106824076B (en) A kind of shaddock peel activated carbon and its application
CN107512977B (en) Preparation method and application of EM nano biochar-based soil conditioner
CN108251118A (en) Charcoal, heavy metal-polluted soil stabilization agent and preparation method thereof
CN104817385A (en) Garden waste biomass charcoal-based soil conditioner and preparation method thereof
CN101492668B (en) Process for producing biological modified carbonize stalk
JP2013539411A (en) Multi-aperture carbon particle air purifier and method for producing the same
CN104817380A (en) Bamboo biomass charcoal based soil conditioner and preparation method thereof
CN111778032B (en) Soil conditioner, preparation method and application
CN105598158B (en) A kind of phosphorus base biological carbon materials and its preparation and application
CN110339812A (en) Modification biological charcoal and its application in absorption VOCs
CN105295938A (en) Heavy metal passivator for reducing bio-availability of cadmium in soil
WO2020155510A1 (en) Soil conditioner used for restoring mercury-contaminated agricultural land, and preparation method and application thereof
CN113198418B (en) Method for preparing efficient phosphorus removal activated carbon by using edible fungus residues
CN112608190B (en) Preparation method of pH/salt-sensitive porous 3D structure slow-release nitrogen fertilizer based on MOF (Cu) @ biochar
Sewu et al. Biochar from the co-pyrolysis of Saccharina japonica and goethite as an adsorbent for basic blue 41 removal from aqueous solution
Qu et al. Comparison of the adsorption characteristics and mechanism of Pb onto four adsorbents derived from edible fungi spent substrate
CN105594508A (en) Lithops pseudotruncatella seedling planting matrix and preparation method thereof
CN107470334A (en) A kind of compounding renovation agent for being used to clear up petroleum-polluted soil
CN103011973A (en) Manufacture method of synergic type nitrogen-phosphorus-potassium mixed fertilizer with slow release and loss control effect
CN107081129A (en) A kind of charcoal and preparation method and application
Teshager et al. A systematic study of cellulose-reactive anionic dye removal using a sustainable bioadsorbent
CN111330970A (en) Method for reducing bioavailability of heavy metal composite contaminated soil in agricultural land
Zhang et al. Preparation and characterization of biochar-based slow-release nitrogen fertilizer and its effect on maize growth

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20170822

RJ01 Rejection of invention patent application after publication