CN111389347B - 一种废水除氟吸附剂及其制备方法 - Google Patents
一种废水除氟吸附剂及其制备方法 Download PDFInfo
- Publication number
- CN111389347B CN111389347B CN202010274407.9A CN202010274407A CN111389347B CN 111389347 B CN111389347 B CN 111389347B CN 202010274407 A CN202010274407 A CN 202010274407A CN 111389347 B CN111389347 B CN 111389347B
- Authority
- CN
- China
- Prior art keywords
- red mud
- fly ash
- adsorbent
- bayer process
- process red
- 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
- 239000003463 adsorbent Substances 0.000 title claims abstract description 37
- 239000002351 wastewater Substances 0.000 title claims abstract description 34
- 238000006115 defluorination reaction Methods 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 39
- 239000010881 fly ash Substances 0.000 claims abstract description 31
- 238000004131 Bayer process Methods 0.000 claims abstract description 28
- 238000012986 modification Methods 0.000 claims abstract description 22
- 230000004048 modification Effects 0.000 claims abstract description 22
- 239000012065 filter cake Substances 0.000 claims abstract description 13
- 239000002253 acid Substances 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- 238000005470 impregnation Methods 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 abstract description 34
- 239000011737 fluorine Substances 0.000 abstract description 34
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 26
- 239000007790 solid phase Substances 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 abstract description 6
- 238000005406 washing Methods 0.000 description 13
- -1 bleaching earth Substances 0.000 description 9
- 239000007788 liquid Substances 0.000 description 7
- 238000007873 sieving Methods 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 238000000227 grinding Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000011449 brick Substances 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 4
- 238000002386 leaching Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 239000010883 coal ash Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 241000233805 Phoenix Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011257 shell material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
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
- B01J20/10—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
-
- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
-
- 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
-
- 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
- B01J2220/42—Materials comprising a mixture of inorganic materials
-
- 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
- B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
-
- 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
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
本发明公开了一种废水除氟吸附剂及其制备方法,所述吸附剂包括:拜耳法赤泥、粉煤灰、CaO;拜耳法赤泥与粉煤灰质量比为1:5‑1:2,CaO的加入量为经柠檬酸改性的拜耳法赤泥和粉煤灰混合物重量的5%‑20%。本发明公开的废水除氟吸附剂的制备方法,包括:先将拜耳法赤泥与粉煤灰按上述质量比混合均匀,将得到混合物进行酸改性后,经过滤得到的滤饼中配入CaO,再次混合均匀后,进行高温固相改性后,冷却至室温,得到吸附剂。本发明可使废水除氟吸附剂的比表面积达到17.00m2/g以上,适用于任何氟含量、任何pH值的含氟废水除氟治理,对废水中氟的去除率在1h时可达到99.0%以上。
Description
技术领域
本发明涉及除氟吸附剂技术领域,具体涉及一种废水除氟吸附剂及其制备方法。
背景技术
吸附法除氟是目前应用最广泛的含氟废水除氟方法。常用的吸附剂有活性氧化铝、沸石、骨炭等。近年来研究者们趋向于将工农业废弃物如砖粉、赤泥、铝酸钙矿渣、漂白土、竹炭、稻草、果壳及树皮制活性炭等用作水处理除氟吸附剂。李建萍等将取自电厂的粉煤灰经200目筛后,在300℃下烘3h。直接用于除氟。结果表明,其对F-质量浓度<500mg/L的含氟废水具有很好的脱氟效果。薛金凤等用50%粉煤灰,48%黏土和2%无机造孔剂在900℃下烧制2h,制得比表面积为15.91m2/g的除氟滤料。Y.Cengeloglu等将从工厂收集而来的碱性赤泥,用水彻底冲洗直至呈现中性,然后用20%的盐酸处理活化,经过滤、反复冲洗、干燥后用于处理含氟水,除氟率可达85%。陈涛等利用废弃羊骨制成的骨炭吸附剂具有再生容易、使用寿命长的特点,处理含氟地下水效果令人满意。梁丽珍等利用城市建筑垃圾(主成分为废砖)为主要原料制得改性废砖,研究发现在pH=1~3时改性废砖对F-的吸附效果很好。专利201710724164.2,将废渣赤泥焙烧,得到焙烧产物,再将焙烧产物用硫酸进行酸浸,得到改性赤泥,对废水中氟的去除率在1h时即可达到99%以上。专利201610209508.1采用水热法,以白云石和粉煤灰为原料,合成除氟用钙基吸附剂,可以在低pH条件下有效吸附氟污染物。
目前来看,单一的吸附材料吸附容量都不大,存在较多的缺陷和局限性,无法满足水污染治理的要求。通过不同吸附材料的复合,实现不同复合材料之间的优势互补,是发展趋势。在各种材料复合之前一般会采用酸浸改性提升材料的活性,常用的是硫酸、盐酸、硝酸中一种或几种的混合物,这几种酸均很不容易被自然环境降解,给后续吸附剂的使用和酸浸废水的处理带来了困难。
此外,一般的除氟吸附剂均具有特定的使用条件如特定pH、特定的废水浓度范围等,在废水处理方面具有加大局限性。
发明内容
针对上述已有技术存在的不足,本发明提供一种以柠檬酸改性多种工业固废制备的废水除氟吸附剂及其方法。
本发明是通过以下技术方案实现的。
一种废水除氟吸附剂,其特征在于,所述吸附剂包括:拜耳法赤泥、粉煤灰、CaO;所述拜耳法赤泥与粉煤灰质量比为1:5-1:2,所述CaO的加入量为经柠檬酸改性的拜耳法赤泥和粉煤灰混合物重量的5%-20%。
进一步地,所述拜耳法赤泥、粉煤灰混合后采用浓度按质量百分比计为20%-40%柠檬酸溶液进行改性。
一种废水除氟吸附剂的制备方法,其特征在于,所述方法包括:先将拜耳法赤泥与粉煤灰按上述质量比混合均匀,将得到的混合物经柠檬酸进行酸改性后配入CaO,再次混合均匀后,进行高温固相改性后,冷却至室温,得到吸附剂。
进一步地,所述酸改性条件为:采用浓度为20%-40%的柠檬酸溶液浸渍拜耳法赤泥与粉煤灰的混合物,浸渍时间为12h-14h,浸渍温度为40℃-60℃,所述柠檬酸溶液的加入质量是拜尔法赤泥与粉煤灰质量之和的10-30倍。
进一步地,所述CaO的加入量为经柠檬酸改性的拜耳法赤泥和粉煤灰混合物重量的5%-20%。
进一步地,所述高温固相改性具体为:在600℃-850℃条件下,在马弗炉中高温焙烧6h-8h。
进一步地,对混合物酸改性后进行过滤,并用去离子水反复冲洗滤饼,直至洗液呈中性。
进一步地,冲洗后的滤饼在80℃条件下烘干至恒重。
进一步地,经烘干至恒重的滤饼经研磨后过200目标准筛,取筛下物后配入CaO。
本发明的有益技术效果,本发明利用工业固废赤泥和粉煤灰(燃煤电厂或锅炉)及价廉易得的石灰作为除氟吸附剂制备的原料,一方面可减少工业固废处理处置过程带来的环境压力,另一方面利用工业固废中的有用成分用于废水除氟,可达到废治废的目的。以柠檬酸作为酸改性试剂,使得吸附剂制备过程更加绿色环保。同时,本发明所述的一种废水除氟吸附剂可用于各种浓度的含氟废水治理,可在各种pH条件下使用,具有广泛的适用性。本发明可使废水除氟吸附剂的比表面积达到17.00m2/g以上,适用于任何氟含量、任何pH值的含氟废水除氟治理,对废水中氟的去除率在1h时可达到99.0%以上。
附图说明
图1为本发明的一种废水除氟吸附剂的制备流程示意图。
具体实施方式
下面结合具体实施方式对本发明进行详细说明。
一种废水除氟吸附剂制备方法,用拜耳法赤泥、粉煤灰及CaO作为原料,先将拜耳法赤泥与粉煤灰按质量比1:5-1:2的比例混合均匀后,对其进行酸改性,改性条件为:采用浓度为20%-40%柠檬酸溶液浸渍拜耳法赤泥与粉煤灰的混合物,浸渍时间为12h-14h,浸渍温度为40℃-60℃,浸渍时柠檬酸溶液加入质量与拜耳法赤泥和粉煤灰质量之和的比例为10:1-30:1。酸改性后过滤,并用去离子水反复冲洗滤饼,直至洗液呈中性,在80℃条件下烘干至恒重,研磨后过200目标准筛,取筛下物配入筛下物总重5%-20%的CaO,再次混合均匀后,在600℃-850℃条件下,在马弗炉中高温焙烧6h-8h,进行高温固相改性,改性后冷却至室温即可制得所述的一种废水除氟吸附剂。
实施例1
用拜耳法赤泥、燃煤电厂的粉煤灰及CaO作为原料,先将拜耳法赤泥与燃煤电厂粉煤灰按1:5的比例混合均匀,用浓度为20%柠檬酸,在液固比为10:1条件下,40℃浸渍12h,过滤,用去离子水反复冲洗滤饼至洗液呈中性,在80℃条件下烘干至恒重,研磨后过200目标准筛,取筛下物配入筛下物总重5%的CaO,再次混合均匀后,在600℃条件下,在马弗炉中高温焙烧6h,进行高温固相改性,改性后冷却至室温即可制得所述的一种废水除氟吸附剂,比表面积为18.20m2/g。用该吸附剂处理含氟废水(氟离子浓度2000mg/L,pH=2),氟离子去除率1h可达99.5%。
实施例2
用拜耳法赤泥、燃煤电厂粉煤灰及CaO作为原料,先将拜耳法赤泥与燃煤电厂粉煤灰按1:3的比例混合均匀,用浓度为30%柠檬酸,在液固比为20:1条件下,50℃浸渍12h,过滤,用去离子水反复冲洗滤饼至洗液呈中性,在80℃条件下烘干至恒重,研磨后过200目标准筛,取筛下物配入筛下物总重10%的CaO,再次混合均匀后,在700℃条件下,在马弗炉中高温焙烧7h,进行高温固相改性,改性后冷却至室温即可制得所述的一种废水除氟吸附剂,比表面积为17.42m2/g。用该吸附剂处理含氟废水(氟离子浓度900mg/L,pH=7),氟离子去除率1h可达99.3%。
实施例3
用拜耳法赤泥、燃煤电厂粉煤灰及CaO作为原料,先将拜耳法赤泥与燃煤电厂粉煤灰按1:2的比例混合均匀,用浓度为40%柠檬酸,在液固比为30:1条件下,60℃浸渍12h,过滤,用去离子水反复冲洗滤饼至洗液呈中性,在80℃条件下烘干至恒重,研磨后过200目标准筛,取筛下物配入筛下物总重20%的CaO,再次混合均匀后,在850℃条件下,在马弗炉中高温焙烧8h,进行高温固相改性,改性后冷却至室温即可制得所述的一种废水除氟吸附剂,比表面积为17.02m2/g。用该吸附剂处理含氟废水(氟离子浓度50mg/L,pH=12),氟离子去除率1h可达99.1%。
实施例4
用拜耳法赤泥、燃煤电厂粉煤灰及CaO作为原料,先将拜耳法赤泥与燃煤电厂粉煤灰按1:4的比例混合均匀,用浓度为35%柠檬酸,在液固比为25:1条件下,55℃浸渍14h,过滤,用去离子水反复冲洗滤饼至洗液呈中性,在80℃条件下烘干至恒重,研磨后过200目标准筛,取筛下物配入筛下物总重15%的CaO,再次混合均匀后,在800℃条件下,在马弗炉中高温焙烧7h,进行高温固相改性,改性后冷却至室温即可制得所述的一种废水除氟吸附剂,比表面积为17.55m2/g。用该吸附剂处理含氟废水(氟离子浓度50mg/L,pH=12),氟离子去除率1h可达99.4%。
以上所述的仅是本发明的较佳实施例,并不局限发明。应当指出对于本领域的普通技术人员来说,在本发明所提供的技术启示下,还可以做出其它等同改进,均可以实现本发明的目的,都应视为本发明的保护范围。
Claims (6)
1.一种废水除氟吸附剂的制备方法,其特征在于,所述吸附剂原料包括:拜耳法赤泥、粉煤灰、CaO;所述方法包括:先将拜耳法赤泥与粉煤灰按质量比1:5-1:2混合均匀,将得到的混合物经浓度按质量百分比计为20%-40%柠檬酸进行酸改性后配入CaO,所述CaO的加入量为经柠檬酸改性的拜耳法赤泥和粉煤灰混合物重量的5%-20%,再次混合均匀后,进行高温固相改性后,所述高温固相改性具体为:在600℃-850℃条件下,在马弗炉中高温焙烧6h-8h,冷却至室温,得到吸附剂。
2.根据权利要求1所述的制备方法,其特征在于,所述酸改性条件为:采用浓度为20%-40%的柠檬酸溶液浸渍拜耳法赤泥与粉煤灰的混合物,浸渍时间为12h -14h,浸渍温度为40℃-60℃,所述柠檬酸溶液的加入质量是拜尔法赤泥与粉煤灰质量之和的10-30倍。
3.根据权利要求1所述的制备方法,其特征在于,所述CaO的加入量为经柠檬酸改性的拜耳法赤泥和粉煤灰混合物重量的5%-20%。
4.根据权利要求1所述的制备方法,其特征在于,对混合物酸改性后进行过滤,并用去离子水反复冲洗滤饼,直至洗液呈中性。
5.根据权利要求4所述的制备方法,其特征在于,冲洗后的滤饼在80℃条件下烘干至恒重。
6.根据权利要求5所述的制备方法,其特征在于,经烘干至恒重的滤饼经研磨后过200目标准筛,取筛下物后配入CaO。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010274407.9A CN111389347B (zh) | 2020-04-09 | 2020-04-09 | 一种废水除氟吸附剂及其制备方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010274407.9A CN111389347B (zh) | 2020-04-09 | 2020-04-09 | 一种废水除氟吸附剂及其制备方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN111389347A CN111389347A (zh) | 2020-07-10 |
CN111389347B true CN111389347B (zh) | 2023-04-07 |
Family
ID=71417474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010274407.9A Active CN111389347B (zh) | 2020-04-09 | 2020-04-09 | 一种废水除氟吸附剂及其制备方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111389347B (zh) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112108125A (zh) * | 2020-09-25 | 2020-12-22 | 北京工业大学 | 一种改性桂圆壳除氟吸附剂的制备方法 |
CN113020242A (zh) * | 2021-03-11 | 2021-06-25 | 中铝环保生态技术(湖南)有限公司 | 一种氟污染土壤修复药剂及实验室应用方法 |
CN114890519A (zh) * | 2022-05-24 | 2022-08-12 | 重庆科技学院 | 一种含氟吸附剂的处理方法 |
CN115193399B (zh) * | 2022-05-28 | 2023-08-04 | 天津正达科技有限责任公司 | 一种用于废水处理的除氟吸附材料 |
CN114853296A (zh) * | 2022-06-02 | 2022-08-05 | 南京沃谱瑞环境研究院有限公司 | 一种高效赤泥除氟剂及其制备方法 |
CN115594380B (zh) * | 2022-10-26 | 2024-08-20 | 中铝环保节能集团有限公司 | 一种硫化氢脱除料剂及其制备方法 |
CN116654928A (zh) * | 2023-06-06 | 2023-08-29 | 昆明理工大学 | 一种赤泥改性制备多孔碳材料的方法及应用 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107262019A (zh) * | 2017-08-22 | 2017-10-20 | 同济大学 | 一种改性赤泥及其制备方法和应用 |
CN108311095A (zh) * | 2018-03-16 | 2018-07-24 | 锡林郭勒职业学院 | 一种粉煤灰除氟剂的制备方法及其应用 |
CN110961074A (zh) * | 2019-10-11 | 2020-04-07 | 王永红 | 一种利用粉煤灰处理高含氟废水的方法 |
-
2020
- 2020-04-09 CN CN202010274407.9A patent/CN111389347B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107262019A (zh) * | 2017-08-22 | 2017-10-20 | 同济大学 | 一种改性赤泥及其制备方法和应用 |
CN108311095A (zh) * | 2018-03-16 | 2018-07-24 | 锡林郭勒职业学院 | 一种粉煤灰除氟剂的制备方法及其应用 |
CN110961074A (zh) * | 2019-10-11 | 2020-04-07 | 王永红 | 一种利用粉煤灰处理高含氟废水的方法 |
Non-Patent Citations (3)
Title |
---|
吴小缓主编.《工业固废处理与利用技术研究及应用新进展》.《工业固废处理与利用技术研究及应用新进展》.北京:中国建材工业出版社,2017,第101-102页. * |
王燕著.《赤泥基瓦斯抑爆粉体材料》.《赤泥基瓦斯抑爆粉体材料》.徐州:中国矿业大学出版社,2017,第20页. * |
粉煤灰处理含氟废水;马艳然等;《水处理技术》;19931231;第19卷(第6期);第355-359页 * |
Also Published As
Publication number | Publication date |
---|---|
CN111389347A (zh) | 2020-07-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN111389347B (zh) | 一种废水除氟吸附剂及其制备方法 | |
CN106669603A (zh) | 一种氧化镁‑稻壳生物炭复合材料的制备方法及应用 | |
CN105854805A (zh) | 一种改性生物炭微球及其制备方法和应用 | |
CN110038511A (zh) | 一种载镧改性膨润土除磷材料的制备方法及其应用 | |
CN109534432A (zh) | 一种去除富营养化水体中磷的生物炭改性材料的制备方法 | |
CN109111207B (zh) | 一种多孔除磷陶粒及其制备方法 | |
CN105032369A (zh) | 一种竹纤维/蒙脱石复合吸附材料 | |
CN106423045A (zh) | 一种处理含锌废水的改性蒙脱土吸附剂制备方法 | |
CN108579666B (zh) | 一种利用废白土制备脱砷吸附剂的方法 | |
CN106000288A (zh) | 一种稀土负载改性粉煤灰的制备方法 | |
CN106076248A (zh) | 一种稀土改性粉煤灰的制备方法 | |
CN102921382A (zh) | 一种木棉纤维吸附剂及其制备方法与应用 | |
CN108421526B (zh) | 一种水热/酸浸两步制备粉煤灰除氟剂的方法及应用 | |
US5168820A (en) | Process for the production of clinkers | |
CN109231480A (zh) | 粉煤灰基污水处理剂的制备方法 | |
CN106000283A (zh) | 利用湖泊沉积物制备的改性控氮材料及其制备方法、应用 | |
JP5605782B2 (ja) | 放射性物質汚染土壌の改良浄化方法 | |
CN114367269B (zh) | 一种烟气污染物吸附剂及其制备方法 | |
KR20140081952A (ko) | 석탄재를 이용한 폐수 내 유기물질 흡착제 및 이의 제조방법 | |
CN113173572B (zh) | 一种磷-氟协同吸附载镧生物炭及其制备方法 | |
CN107262021B (zh) | 制备卤素改性飞灰吸附剂的方法 | |
CN114733486A (zh) | 一种除磷改性生物炭的制备方法 | |
CN109289784B (zh) | 利用大蒜秸秆废弃物制作除氟复配吸附材料及应用方法 | |
CN114591069A (zh) | 一种污泥陶粒及其制备方法和应用 | |
CN106268633A (zh) | 一种不易崩解的混合活性炭脱硫剂及其制备方法 |
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 | ||
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20240429 Address after: 450041 No. 82, Jiyuan Road, Zhengzhou District, Henan Patentee after: China Aluminum Zhengzhou Research Institute of Nonferrous Metals Co.,Ltd. Country or region after: China Address before: 100082 No. 62 North Main Street, Haidian District, Beijing, Xizhimen Patentee before: ALUMINUM CORPORATION OF CHINA Ltd. Country or region before: China |