CN115121218B - 一种制备吸附pb2+的污泥基改性陶粒的方法 - Google Patents
一种制备吸附pb2+的污泥基改性陶粒的方法 Download PDFInfo
- Publication number
- CN115121218B CN115121218B CN202210717828.3A CN202210717828A CN115121218B CN 115121218 B CN115121218 B CN 115121218B CN 202210717828 A CN202210717828 A CN 202210717828A CN 115121218 B CN115121218 B CN 115121218B
- Authority
- CN
- China
- Prior art keywords
- ceramsite
- powder
- sludge
- necked flask
- modified
- 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.)
- Active
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 35
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 36
- 239000000843 powder Substances 0.000 claims abstract description 28
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 16
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 229910021642 ultra pure water Inorganic materials 0.000 claims abstract description 12
- 239000012498 ultrapure water Substances 0.000 claims abstract description 12
- 239000002244 precipitate Substances 0.000 claims abstract description 10
- 230000035484 reaction time Effects 0.000 claims abstract description 10
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000008098 formaldehyde solution Substances 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000011010 flushing procedure Methods 0.000 claims abstract description 5
- 238000000227 grinding Methods 0.000 claims abstract description 5
- 238000001556 precipitation Methods 0.000 claims abstract description 5
- 125000000524 functional group Chemical group 0.000 claims description 10
- 239000000706 filtrate Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000010587 phase diagram Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 239000010865 sewage Substances 0.000 abstract description 12
- 229910001385 heavy metal Inorganic materials 0.000 description 11
- 238000012986 modification Methods 0.000 description 11
- 230000004048 modification Effects 0.000 description 11
- 150000002500 ions Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002028 Biomass Substances 0.000 description 3
- 238000002329 infrared spectrum Methods 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002052 molecular layer Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004021 humic acid Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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
- B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
- B01J20/041—Oxides or hydroxides
-
- 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
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
-
- 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
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
-
- 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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
-
- 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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B30/00—Compositions for artificial stone, not containing binders
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/0605—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances by sublimating
-
- 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
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00793—Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
本发明提供一种制备吸附pb2+的污泥基改性陶粒的方法，属于污水处理技术领域。该方法首先将陶粒原料研成粉末，置于三颈烧瓶中并加入超纯水和氢氧化钠粉末；然后在室温下，将三颈烧瓶置于磁力搅拌器中搅拌并加入甲醛溶液；再将三颈烧瓶置于KI2型的烧瓶加热器中反应；到达预设反应时间后，将三颈烧瓶取出并自然冷却，将二硫化碳溶液和NaOH粉末同时加入三颈烧瓶中搅拌均匀，自然反应；到达预设反应时间后，加入盐酸，搅拌均匀后静置，出现棕黑色沉淀；将得到的沉淀用超纯水冲洗后，将沉淀物用冷冻干燥机收集，即得到改性陶粒。该方法能够实现改性污泥陶粒对Pb2+的吸附率达到90％以上，解决了现有污泥陶粒难以有效吸附Pb2+的技术难题。
Description
技术领域
本发明涉及污水处理技术领域，特别是指一种制备吸附pb2+的污泥基改性陶粒的方法。
背景技术
污水治理是一项长期工程，多年来用于污水处理的技术层出不穷，但如何低成本、高效率地处理污水则是关键所在，尤其是如何实现以污治污更是科学界与工程领域的研究热点，污泥基陶粒在污水处理中正在发挥重要作用[7]。
在处理污水过程中，重金属离子能否有效吸附和固化是衡量处理效果的核心指标。现有技术中提及了污泥基陶粒对废水中的污染物具备广泛的消解能力，但其对于重金属离子的吸附效果不甚理想，尤其是对于Pb2+的吸附效果更弱；同时，现有技术中制备的普通污泥基陶粒粉对Cu2+的去除率仅为15％，对Pb2+的吸附效果更差。
现有技术中公开了一种生物质污泥陶粒及其制备方法和应用，该生物质污泥陶粒由生物质混烧灰、污泥粉等组成，不消耗任何页岩、高岭土、粘土等不可再生自然资源，其孔径大小均匀，具有较低的吸水率及较好的吸附效果，是一种很好的重金属污水处理材料。但该方法所制备的生物质污泥陶粒对Pb2+的最大吸附率仅为39.94％，而对Zn、Cd、Cu、As等重金属的吸附率均不超过20％。
现有技术中提出了一种用于重金属废水处理的污泥陶粒及制备方法，所述污泥陶粒是将河道底泥及矿物粉料烧结制得多孔陶粒，同时将腐殖酸、异丙醇等混合制成混合浆液，并将多孔陶粒在浆状液中反复浸泡-烘干而制得。该方法提供的改性污泥陶粒，比表面积大，对重金属Pb、Cd、Cu等具有很强的吸附性且吸附率稳定，同时可多次回收利用，无二次污染，可广泛用于重金属废水处理。但其对Cu2+和Pb2+的最大吸附率分别仅为61％和57％，远远达不到我国污水处理中重金属离子的处理要求。
现有的关于污泥陶粒制备方法虽有不少，但均未考虑如何提高污泥陶粒对重金属离子的吸附性能。
可见，理论界和工程界普遍未关注或未能提出如何通过制备改性污泥陶粒从而实现对重金属离子，特别是pb2+的有效吸附，而造成这一现状的核心原因有两条：(1)污泥陶粒在微观层面对Pb2+的吸附机制未被充分揭示；(2)目前缺乏科学地评估污泥基陶粒吸附Pb2+性能的方法，这给陶粒改性工作带来困难。
由此，本发明研究设计了一种全新的制备吸附pb2+的污泥基改性陶粒的方法，实现对Pb2+具备较强吸附特性的污泥基改性陶粒的制备。
发明内容
本发明基于污水处理领域目前缺乏科学、环保、经济的去除重金属离子尤其是Pb2+的技术和工艺，提供一种制备吸附pb2+的污泥基改性陶粒的方法，通过在碱性条件下于分子层面为普通污泥陶粒颗粒表面附着含硫官能团的方法，有效提升污泥基陶粒对Pb2+的吸附特性。
本发明方法充分发挥含硫官能团存在易与金属离子结合的活性位点这一特征，在分子层面对污泥基陶粒进行改性，使其颗粒表面附着多种含硫官能团，从而有效提升污泥基陶粒对Pb2+的吸附特性。
该方法包括步骤如下：
S1：将陶粒原料研成粉末后，置于三颈烧瓶中并加入超纯水，再取氢氧化钠粉末加入三颈烧瓶中，将溶液的pH值调节为12～13；
S2：在室温下，将三颈烧瓶置于磁力搅拌器中搅拌10～15分钟，随后加入甲醛溶液，搅拌均匀；
S3：将KI2型的烧瓶加热器温度设定为90℃，将三颈烧瓶置于其中，使其自然反应2.5～3小时；
S4：到达预设反应时间后，将三颈烧瓶取出并自然冷却，待温度降到40～45℃以下时，将二硫化碳溶液和NaOH粉末同时加入三颈烧瓶中并搅拌均匀，自然反应2～3小时；
S5：到达预设反应时间后，向三颈烧瓶中加入0.1-0.2mol/L的盐酸，搅拌均匀后静置4.5～6小时，三颈烧瓶中出现棕黑色沉淀；
S6：将S5中得到的沉淀用超纯水冲洗3～5分钟，待滤液颜色接近透明且滤液的pH值为7.0～7.3时，将沉淀物用冷冻干燥机收集，即得到改性陶粒。
上述，陶粒原料化学成分SiO2、Al2O3、氧化物溶剂总和满足Riley相图；陶粒比表面积大于48700cm2/g；
其中，氧化物溶剂为CaO+MgO+Fe2O3+Na2O+K2O。
上述S1中陶粒原料粉末粒度小于80目。
S1中陶粒原料和超纯水的质量比为1:3～1：4。
S2中甲醛溶液的加入量为2mL-3mL/g陶粒。
S4中二硫化碳溶液和NaOH粉末的0.025-0.05g/g陶粒。
S5中盐酸加入量保证溶液pH为中性。
S5中得到的改性陶粒对Pb2+的吸附率达到90％以上。
本发明的上述技术方案的有益效果如下：
上述方案中，能够实现改性污泥陶粒对Pb2+的吸附率达到90％以上，较好地解决了现有污泥陶粒难以有效吸附Pb2+的技术难题，拓展了污泥基陶粒的工业和生态用途，同时为污水、土壤中重金属固化技术的发展提供了新的技术思路。
附图说明
图1为本发明的制备吸附pb2+的污泥基改性陶粒的方法流程图；
图2为本发明实施例中改性前后陶粒表面官能团分析；
图3为本发明实施例中两种材料对Pb2+的吸附性能评估。
具体实施方式
为使本发明要解决的技术问题、技术方案和优点更加清楚，下面将结合附图及具体实施例进行详细描述。
本发明提供一种制备吸附pb2+的污泥基改性陶粒的方法。
如图1所示，该方法包括步骤如下：
S1：将陶粒原料研成粉末后，置于三颈烧瓶中并加入超纯水，再取氢氧化钠粉末加入三颈烧瓶中，将溶液的pH值调节为12～13；
S2：在室温下，将三颈烧瓶置于磁力搅拌器中搅拌10～15分钟，随后加入甲醛溶液，搅拌均匀；
S3：将KI2型的烧瓶加热器温度设定为90℃，将三颈烧瓶置于其中，使其自然反应2.5～3小时；
S4：到达预设反应时间后，将三颈烧瓶取出并自然冷却，待温度降到40～45℃以下时，将二硫化碳溶液和NaOH粉末同时加入三颈烧瓶中并搅拌均匀，自然反应2～3小时；
S5：到达预设反应时间后，向三颈烧瓶中加入0.1-0.2mol/L的盐酸，搅拌均匀后静置4.5～6小时，三颈烧瓶中出现棕黑色沉淀；
S6：将S5中得到的沉淀用超纯水冲洗3～5分钟，待滤液颜色接近透明且滤液的pH值为7.0～7.3时，将沉淀物用冷冻干燥机收集，即得到改性陶粒。
在具体制备中，所用陶粒原料化学成分SiO2、Al2O3、氧化物溶剂总和满足Riley相图；陶粒比表面积大于48700cm2/g；
其中，氧化物溶剂为CaO+MgO+Fe2O3+Na2O+K2O。
S1中陶粒原料粉末用80目筛子筛分取粒度小于80目的筛下物。
S5中得到的改性陶粒对Pb2+的吸附率达到90％以上。
在具体实施过程中，按如下步骤：
S1：将10g陶粒原料研成粉末(粒度小于80目)后，置于三颈烧瓶中并加入超纯水30mL，再取氢氧化钠粉末加入三颈烧瓶中，将溶液的pH值调节为12～13；
S2：在室温下，将三颈烧瓶置于磁力搅拌器中搅拌10～15分钟，随后加入20mL甲醛溶液，搅拌均匀；
S3：将KI2型的烧瓶加热器温度设定为90℃，将三颈烧瓶置于其中，使其自然反应2.5～3小时；
S4：到达预设反应时间后，将三颈烧瓶取出并自然冷却，待温度降到40～45℃以下时，将20mL二硫化碳溶液和0.5gNaOH粉末同时加入三颈烧瓶中并搅拌均匀，自然反应2～3小时；
S5：到达预设反应时间后，向三颈烧瓶中加入0.1mol/L的盐酸，直至溶液pH为中性，搅拌均匀后静置4.5～6小时，三颈烧瓶中出现棕黑色沉淀；
S6：将S5中得到的沉淀用超纯水冲洗3～5分钟，待滤液颜色接近透明且滤液的pH值为7.0～7.3时，将沉淀物用冷冻干燥机收集，即得到改性陶粒。
改性陶粒分为改性后陶粒1和改性后陶粒2两组，在试验过程中，为确保结果的准确，改性后陶粒1和改性后陶粒2采用不同的样品量进行分析，如图2所示，分别为改性前陶粒颗粒表面的官能团红外光谱分析情况、改性后陶粒1(pH调节为12-13)颗粒表面的官能团红外光谱分析情况和改性后陶粒2(pH调节为12-13)颗粒表面的官能团红外光谱分析情况。在光谱735cm-1时，改性后陶粒1和2均比改性前陶粒多出了O-S官能团，在光谱649cm-1时，改性后陶粒1和2均比改性前陶粒多出了C-S官能团，因此表明改性后陶粒的表面成功携带了含S官能团。
如图3所示，为改性前后陶粒对Pb2+的吸附平衡曲线，改性前陶粒对Pb2+的平衡吸附量为0.283mg/g，改性后的吸附量可达0.55mg/g。吸附效率也可从47％提高到92％。
以上所述是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明所述原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。
Claims (3)
1.一种制备吸附pb2+的污泥基改性陶粒的方法，其特征在于，包括步骤如下：
S1：将陶粒原料研成粉末后，置于三颈烧瓶中并加入超纯水，再取氢氧化钠粉末加入三颈烧瓶中，将溶液的pH值调节为12～13；
S2：在室温下，将三颈烧瓶置于磁力搅拌器中搅拌10～15分钟，随后加入甲醛溶液，搅拌均匀；
S3：将KI2型的烧瓶加热器温度设定为90℃，将三颈烧瓶置于其中，使其自然反应2.5～3小时；
S4：到达预设反应时间后，将三颈烧瓶取出并自然冷却，待温度降到40～45℃以下时，将二硫化碳溶液和NaOH粉末同时加入三颈烧瓶中并搅拌均匀，自然反应2～3小时；
S5：到达预设反应时间后，向三颈烧瓶中加入0.1-0.2mol/L的盐酸，搅拌均匀后静置4.5～6小时，三颈烧瓶中出现棕黑色沉淀；
S6：将S5中得到的沉淀用超纯水冲洗3～5分钟，待滤液颜色接近透明且滤液的pH值为7.0～7.3时，将沉淀物用冷冻干燥机收集，即得到改性陶粒，改性陶粒表面附着含硫官能团，从而有效提升污泥基陶粒对Pb2+的吸附特性；
所述陶粒原料化学成分SiO2、Al2O3、氧化物溶剂总和满足Riley相图；陶粒比表面积大于48700cm2/g；
其中，氧化物溶剂为CaO+MgO+Fe2O3+Na2O+K2O；
所述S5中得到的改性陶粒对Pb2+的吸附率达到90％以上；
所述S1中陶粒原料和超纯水的质量比为1:3～1：4；
所述S2中甲醛溶液的加入量为2mL-3mL/g陶粒；
所述S4中二硫化碳溶液的加入量为2mL-3mL/g陶粒，NaOH粉末的加入量为0.025-0.05g/g陶粒。
2.根据权利要求1所述的制备吸附pb2+的污泥基改性陶粒的方法，其特征在于，所述S1中陶粒原料粉末粒度小于80目。
3.根据权利要求1所述的制备吸附pb2+的污泥基改性陶粒的方法，其特征在于，所述S5中加入盐酸，直至溶液为中性。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210717828.3A CN115121218B (zh) | 2022-06-20 | 2022-06-20 | 一种制备吸附pb2+的污泥基改性陶粒的方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210717828.3A CN115121218B (zh) | 2022-06-20 | 2022-06-20 | 一种制备吸附pb2+的污泥基改性陶粒的方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115121218A CN115121218A (zh) | 2022-09-30 |
| CN115121218B true CN115121218B (zh) | 2024-04-19 |
Family
ID=83379658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210717828.3A Active CN115121218B (zh) | 2022-06-20 | 2022-06-20 | 一种制备吸附pb2+的污泥基改性陶粒的方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115121218B (zh) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102463104A (zh) * | 2010-11-19 | 2012-05-23 | 王永斌 | 黏土基黄原酸盐和制备方法及其应用 |
| CN103319157A (zh) * | 2013-07-10 | 2013-09-25 | 扬州大学 | 一种利用相图研制污泥陶粒的方法 |
| CN103785361A (zh) * | 2014-03-05 | 2014-05-14 | 北京师范大学 | 一种将颗粒污泥黄原酸化制备重金属吸附剂的方法 |
| CN104437406A (zh) * | 2014-11-18 | 2015-03-25 | 广西大学 | 一种木质素多孔材料的制备方法 |
| CN106045553A (zh) * | 2016-05-26 | 2016-10-26 | 格丰环保科技有限公司 | 用于吸附重金属的多孔陶瓷材料的制备方法 |
-
2022
- 2022-06-20 CN CN202210717828.3A patent/CN115121218B/zh active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102463104A (zh) * | 2010-11-19 | 2012-05-23 | 王永斌 | 黏土基黄原酸盐和制备方法及其应用 |
| CN103319157A (zh) * | 2013-07-10 | 2013-09-25 | 扬州大学 | 一种利用相图研制污泥陶粒的方法 |
| CN103785361A (zh) * | 2014-03-05 | 2014-05-14 | 北京师范大学 | 一种将颗粒污泥黄原酸化制备重金属吸附剂的方法 |
| CN104437406A (zh) * | 2014-11-18 | 2015-03-25 | 广西大学 | 一种木质素多孔材料的制备方法 |
| CN106045553A (zh) * | 2016-05-26 | 2016-10-26 | 格丰环保科技有限公司 | 用于吸附重金属的多孔陶瓷材料的制备方法 |
Non-Patent Citations (1)
| Title |
|---|
| "净水厂工艺废水中污泥制备吸附剂及对水中Cr6+的吸附特性";任新;《中国博士学位论文全文数据库 工程科技Ⅰ辑》;摘要，第58-59页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115121218A (zh) | 2022-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110975821A (zh) | 一种二氧化硅和海藻酸钙复合金属离子吸附剂、制备方法及应用 | |
| CN102671627B (zh) | 一种湖底污泥制备吸附材料的方法 | |
| CN111533395B (zh) | 污染河道底泥的基底改良材料及其制备方法和应用 | |
| CN104961201A (zh) | 水处理用铁碳微电解陶粒填料的制备方法 | |
| CN105622043A (zh) | 一种免烧结改性粉煤灰陶粒的制备方法及其应用 | |
| CN111001374A (zh) | 一种掺锶羟基磷灰石重金属吸附材料的制备方法及其应用 | |
| CN114213140B (zh) | 用于磷吸附的煤矸石基陶粒及其制备方法和水处理设备 | |
| CN114247426B (zh) | 生物炭负载天然含铁矿物磁性吸附剂及其制备方法和应用 | |
| CN113480242B (zh) | 一种地质聚合物透水砖及其制备方法和应用 | |
| CN115121218B (zh) | 一种制备吸附pb2+的污泥基改性陶粒的方法 | |
| CN113185170B (zh) | 一种基于微生物诱导技术改性煤矸石骨料的方法 | |
| CN113041991A (zh) | 一种载镧凹凸棒石除磷吸附剂的制备方法及其应用 | |
| CN116328728A (zh) | 一种制备磁性生物炭的方法 | |
| CN113277565B (zh) | 一种重金属固化剂的制备方法及其使用方法 | |
| CN114984904A (zh) | 一种改性火山岩的制备方法及改性火山岩的应用 | |
| CN112624247A (zh) | 一种利用贝壳粉耦合去除废水中硼磷的方法 | |
| CN117358199A (zh) | 用于去除污水中氮磷和重金属的污泥气化渣复合材料的制备方法 | |
| CN111250034A (zh) | 一种脱硫渣的改性方法及应用 | |
| CN111268773A (zh) | 一种磁性混凝剂及其制备方法 | |
| CN115780486B (zh) | 一种污染物纳米阻控材料及其制备方法 | |
| CN115432796A (zh) | 一种基于木质素磺酸盐修饰钴掺杂零价铁复合材料高效去除水体重金属的方法 | |
| CN115282976B (zh) | 一种铬掺杂的铁氧体催化剂及其制备方法与应用 | |
| CN114307982B (zh) | 一种用于静态水体修复的复合基改性粉煤灰颗粒的制备方法 | |
| CN110734129B (zh) | 一种基于陨石制备的纳米零价金属多孔功能材料、其制备方法及应用 | |
| Zhao et al. | Adsorption of Low-Concentration Ammonia Nitrogen from Water on Alkali-Modified Coal Fly Ash: Characterization and Mechanism. Water 2023, 15, 956 |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |