CN108970619A - 一种利用废汞触媒制备载Fe-Zn光催化材料 - Google Patents
一种利用废汞触媒制备载Fe-Zn光催化材料 Download PDFInfo
- Publication number
- CN108970619A CN108970619A CN201811019229.4A CN201811019229A CN108970619A CN 108970619 A CN108970619 A CN 108970619A CN 201811019229 A CN201811019229 A CN 201811019229A CN 108970619 A CN108970619 A CN 108970619A
- Authority
- CN
- China
- Prior art keywords
- mercury catalyst
- useless
- useless mercury
- catalysis material
- mercury
- 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
Links
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 229910052753 mercury Inorganic materials 0.000 title claims abstract description 62
- 239000003054 catalyst Substances 0.000 title claims abstract description 57
- 239000000463 material Substances 0.000 title claims abstract description 35
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000011701 zinc Substances 0.000 claims abstract description 42
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002994 raw material Substances 0.000 claims abstract description 13
- 238000001354 calcination Methods 0.000 claims abstract description 12
- 238000007598 dipping method Methods 0.000 claims abstract description 12
- 238000002803 maceration Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 11
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims abstract description 6
- 238000000926 separation method Methods 0.000 claims abstract description 6
- 238000001291 vacuum drying Methods 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims description 10
- 229910001868 water Inorganic materials 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 5
- IJRVLVIFMRWJRQ-UHFFFAOYSA-N nitric acid zinc Chemical compound [Zn].O[N+]([O-])=O IJRVLVIFMRWJRQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 19
- 230000006698 induction Effects 0.000 abstract description 9
- 238000007670 refining Methods 0.000 abstract description 9
- 239000000126 substance Substances 0.000 abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052799 carbon Inorganic materials 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000008367 deionised water Substances 0.000 abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 14
- CXKWCBBOMKCUKX-UHFFFAOYSA-M methylene blue Chemical compound [Cl-].C1=CC(N(C)C)=CC2=[S+]C3=CC(N(C)C)=CC=C3N=C21 CXKWCBBOMKCUKX-UHFFFAOYSA-M 0.000 description 11
- 229960000907 methylthioninium chloride Drugs 0.000 description 11
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 9
- 238000010521 absorption reaction Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 8
- 239000000975 dye Substances 0.000 description 7
- 239000011787 zinc oxide Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- RCTYPNKXASFOBE-UHFFFAOYSA-M chloromercury Chemical compound [Hg]Cl RCTYPNKXASFOBE-UHFFFAOYSA-M 0.000 description 6
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 6
- 238000007146 photocatalysis Methods 0.000 description 6
- 230000001699 photocatalysis Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000001179 sorption measurement Methods 0.000 description 6
- 229910052725 zinc Inorganic materials 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- BERDEBHAJNAUOM-UHFFFAOYSA-N copper(I) oxide Inorganic materials [Cu]O[Cu] BERDEBHAJNAUOM-UHFFFAOYSA-N 0.000 description 4
- KRFJLUBVMFXRPN-UHFFFAOYSA-N cuprous oxide Chemical compound [O-2].[Cu+].[Cu+] KRFJLUBVMFXRPN-UHFFFAOYSA-N 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910000474 mercury oxide Inorganic materials 0.000 description 3
- UKWHYYKOEPRTIC-UHFFFAOYSA-N mercury(ii) oxide Chemical compound [Hg]=O UKWHYYKOEPRTIC-UHFFFAOYSA-N 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229940056319 ferrosoferric oxide Drugs 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000238557 Decapoda Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 239000005447 environmental material Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/80—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with zinc, cadmium or mercury
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/60—Catalysts, in general, characterised by their form or physical properties characterised by their surface properties or porosity
- B01J35/61—Surface area
- B01J35/617—500-1000 m2/g
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G13/00—Compounds of mercury
-
- 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
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/308—Dyes; Colorants; Fluorescent agents
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Catalysts (AREA)
Abstract
本发明涉及一种利用废汞触媒制备载Fe‑Zn光催化材料,属于于资源综合利用以及化工技术领域。将废汞触媒经振动筛除去粒度为5~10目的残渣,剩余的破碎至100~120目,用去离子水和5wt%稀盐酸洗涤后真空干燥得到废汞触媒原料;将得到的废汞触媒原料加入到浓度为0.1mol/L氢氧化钙溶液中浸出,液固分离后得到除汞废汞触媒;将硝酸铁溶液和硝酸锌溶液混合均匀得到浸渍液,将得到的除汞废汞触媒置于浸渍液中超声震荡,过滤干燥得到浸渍物;浸渍物微波焙烧制备得到Fe‑Zn光催化材料。本方法实现了对含汞废触媒的资源综合利用,减少了废活性炭排放和对环境的污染,实现了资源的循环利用和企业的可持续发展。
Description
技术领域
本发明涉及一种利用废汞触媒制备载Fe-Zn光催化材料,属于于资源综合利用以及化工技术领域。
背景技术
目前,工业一般采用乙炔法制备聚氯乙烯,然而在制备过程中常用含汞的触媒作为催化剂进行生产以降低成本。含汞触媒是指以活性炭作为载体,上面附着氯化汞。经过多次使用后,含汞触媒催化剂逐渐失效,活性也逐渐降低,所以在工业生产中会产生大量的有毒有害废触媒,直接丢弃不仅会对环境产生巨大的污染,还会造成汞、碳等资源的浪费。汞是对环境和生物体有巨大伤害的元素,废触媒易对环境造成污染,引起安全隐患。目前,对废触媒的回收方法主要有“复盐法”、“高温法”两种,这两种方法存在回收效率低、效果差,对设备要求高等缺点。所以,对废催化剂中的汞加以回收,并对其中的碳进行其他领域的用,不仅可以减少对环境的伤害,减少了环境处理的支出,还对其中的二次资源进行了成分的利用,节约了生产成本。
最近几年,随着环境保护的力度不断加大,对化工厂、药厂、污水处理厂等企业所排放的废水的标准也是越来越严格。众所周知,水中含有的各种有机物和无机化合物等对生态和生物会产生十分大的健康隐患,引起了世界范围内的广泛关注,对水体中的污染物进行研究治理,保护生态环境安全是十分紧迫且必须马上进行的事。例如,纺织企业中会用到许多有机染料来染色,而这些染料使用达到一定次数后就会作为废水排放到江河湖泊中,而这些有机物大多是具有生物毒害性的难降解物质,会对水体中的生物产生极大的伤害,例如造成水中鱼虾等变异,而通过生物链累积后又传递给人类,会对人类的健康造成十分不利的影响。
如何制备吸附降解染料最优的活性炭是个难题。
发明内容
针对上述现有技术存在的问题及不足,本发明提供一种利用废汞触媒制备载Fe-Zn光催化材料。本发明以废汞触媒为原料,首先将其中的汞元素利用氢氧化钙沉淀法加以回收处理,避免了负载铁和锌后高温过程中氯化汞的挥发,该制备方法为通入保护气体,实验流程简单,操作简便,能耗低,做到了变废为宝,实现了废弃物的循环利用,有利于缓解资源与环境的压力,具有优越的经济和生态效益,且该法所制备的光催化材料具有较高的吸附和光催化性能,其比表面积达到672m2/g以上,对亚甲基蓝的吸附降解率达96.7%。本发明通过以下技术方案实现。
一种利用废汞触媒制备载Fe-Zn光催化材料,其具体步骤如下:
步骤1、将废汞触媒经振动筛除去粒度为5~10目的残渣,剩余的破碎至100~120目,用去离子水和5wt%稀盐酸洗涤后真空干燥得到废汞触媒原料;
步骤2、将步骤1得到的废汞触媒原料按照液固比为30~50:60~100mL/g加入到浓度为0.1mol/L氢氧化钙溶液中浸出3~6h,液固分离后得到除汞废汞触媒;
步骤3、将浓度均为0.5~1.1mol/L的硝酸铁溶液和硝酸锌溶液按照硝酸铁溶液和硝酸锌溶液摩尔比为2:1混合均匀得到浸渍液,将步骤2得到的除汞废汞触媒按照液固比为50~100:10~20mL/g置于浸渍液中超声震荡12h,过滤干燥得到浸渍物;
步骤4、将步骤3得到的浸渍物在温度为500℃~800℃下微波焙烧10~30min制备得到Fe-Zn光催化材料。
所述步骤4中微波焙烧微波功率为800~1200W。
本发明利用铁的四价氧化物四氧化三铁具有磁性,便于使用后利用其磁性回收,而氧化铁和氧化锌属于半导体,常被用于光催化领域,在碳质材料上负载具有光催化作用的金属氧化物既能够提高它的吸附性能,同时这些金属氧化物在紫外光的作用下还能够产生光催化性能,对水体中的有机物等进行催化分解。
在高温作用下,硝酸铁和硝酸锌发生分解反应:
Fe(NO3)3(高温)= NO2+Fe3O4+Fe2O3
Zn(NO3)2(高温)= ZnO+2 NO2
在紫外光的照射下,氧化铁(三氧化二铁)或氧化锌会产生自由基物质可引起氧化或还原反应,反应方程式如下:
Fe2O3/ ZnO (hVB +) + OH- →Fe2O3/Cu2O + HO•
Fe2O3/ ZnO (hVB +) + H2O → Fe2O3/Cu2O + H+ + HO•
Fe2O3/ ZnO (eCB -) + H+ →Fe2O3/Cu2O + H•
Fe2O3/ ZnO (eCB -) + O2 →Fe2O3/Cu2O +O2•-
本发明的有益效果是:
(1)本方法生产工艺十分简单,未通入保护气体,实验流程短,操作方便,还具有能耗低、成本低等优点;
(2)通过氢氧化钙的预处理过程,将废触媒中的氯化汞以沉淀形式得以回收;
(3)本方法制备时间短、效率高,利用其中含有具有磁性的四氧化三铁特性,能够使回收过程方便,可为企业带来实际的经济效益;
(4)本方法制备的含铁、锌的光催化材料对亚甲基蓝的吸附和光催化效果十分良好,即既能实现对有机物的吸附,又能对所吸附的物质进行降解;
(5)本方法实现了对含汞废触媒的资源综合利用,减少了废活性炭排放和对环境的污染,实现了资源的循环利用和企业的可持续发展。
附图说明
图1是本发明实施例1制备得到的载Fe-Zn光催化材料在77K的氮气吸附曲线图;
图2是本发明实施例1制备得到的载Fe-Zn光催化材料孔体积分布图;
图3是本发明实施例1制备得到的载Fe-Zn光催化材料孔径分布图;
图4是本发明实施例1制备得到的载Fe-Zn光催化材料EDS图;
图5是本发明实施例1制备得到的载Fe-Zn光催化材料在黑暗和紫外条件下对亚甲基蓝的去除率图。
具体实施方式
下面结合附图和具体实施方式,对本发明作进一步说明。
下面实施例中比表面积采用全自动物理化学吸附仪(Autosorb-1-C,康塔公司)测定,亚甲基蓝吸附值根据国家标准GBT12496.10-1999测定。
实施例1
该利用废汞触媒制备载Fe-Zn光催化材料,其具体步骤如下:
步骤1、将废汞触媒经振动筛除去粒度为5目的残渣,剩余的破碎至100目,用去离子水和5wt%稀盐酸洗涤后真空干燥2h得到废汞触媒原料;
步骤2、将步骤1得到的废汞触媒原料按照液固比为30:100mL/g加入到浓度为0.1mol/L氢氧化钙溶液中浸出3h,在此过程中废汞触媒氯化汞变为氧化汞,液固分离(具体的液固分离为:使用5目的铁网过滤使废触媒和含汞的氢氧化钙溶液分离)后得到除汞废汞触媒;
步骤3、将浓度均为1mol/L的硝酸铁溶液(100mL)和硝酸锌溶液按照硝酸铁溶液和硝酸锌溶液摩尔比为2:1混合均匀得到浸渍液,将步骤2得到的除汞废汞触媒按照液固比为50:10mL/g置于浸渍液中超声震荡12h,过滤干燥得到浸渍物;
步骤4、将步骤3得到的浸渍物在温度为700℃下微波焙烧(微波焙烧微波功率为800W)25min制备得到Fe-Zn光催化材料(Fe/Zn/AC光催化材料)。
本实施例制备得到的Fe-Zn光催化材料比表面积达到672m2/g以上,在紫外光辐照下,对染料亚甲基蓝具有非常高的吸附降解性能,对亚甲基蓝的去除率达到96.7%以上。
本实施例制备得到的Fe-Zn光催化材料,在77K的氮气吸附曲线图如图1所示,从图1可以看出Fe-Zn处理后的废催化剂经微波煅烧后的氮气吸附量明显大于废催化剂;载Fe-Zn光催化材料孔体积分布图和孔径分布图分别如图2和3所示,从图2中可以看出Fe-Zn催化剂的孔径主要分布在2~25nm,而废催化剂主要分布在1~12nm,这说明废催化剂的孔洞有相当部分是被堵住,而Fe-Zn催化剂微波处理后大部分孔洞得以重新打开,从图3中可以得出和图2相互印证的结论。本实施例制备得到的Fe-Zn光催化材料EDS图如图4所示,从图4中可以看出有Fe和Zn对应的能谱峰出现,这说明Fe和Zn已经负载在催化剂上。载Fe-Zn光催化材料在黑暗和紫外条件下对亚甲基蓝的去除率图如图5所示,从图5中可以看出在黑暗条件下吸附饱和后,当打开紫外灯的情况下本实验制备的Fe-Zn光催化材料的确具有光催化降解作用。
实施例2
该利用废汞触媒制备载Fe-Zn光催化材料,其具体步骤如下:
步骤1、将废汞触媒经振动筛除去粒度为10目的残渣,剩余的破碎至120目,用去离子水和5wt%稀盐酸洗涤后真空干燥2h得到废汞触媒原料;
步骤2、将步骤1得到的废汞触媒原料按照液固比为50:60mL/g加入到浓度为0.1mol/L氢氧化钙溶液中浸出6h,在此过程中废汞触媒氯化汞变为氧化汞,液固分离(具体的液固分离为:使用5目的铁网过滤使废触媒和含汞的氢氧化钙溶液分离)后得到除汞废汞触媒;
步骤3、将浓度均为1.1mol/L的硝酸铁溶液(100mL)和硝酸锌溶液按照硝酸铁溶液和硝酸锌溶液摩尔比为2:1混合均匀得到浸渍液,将步骤2得到的除汞废汞触媒按照液固比为100:20mL/g置于浸渍液中超声震荡12h,过滤干燥得到浸渍物;
步骤4、将步骤3得到的浸渍物在温度为800℃下微波焙烧(微波焙烧微波功率为1200W)10min制备得到Fe-Zn光催化材料(Fe/Zn/AC光催化材料)。
本实施例制备得到的Fe-Zn光催化材料比表面积达到665m2/g以上,在紫外光辐照下,对染料亚甲基蓝具有非常高的吸附降解性能,对亚甲基蓝的去除率达到95.7%以上。
实施例3
该利用废汞触媒制备载Fe-Zn光催化材料,其具体步骤如下:
步骤1、将废汞触媒经振动筛除去粒度为8目的残渣,剩余的破碎至110目,用去离子水和5wt%稀盐酸洗涤后真空干燥2h得到废汞触媒原料;
步骤2、将步骤1得到的废汞触媒原料按照液固比为40:90mL/g加入到浓度为0.1mol/L氢氧化钙溶液中浸出4h,在此过程中废汞触媒氯化汞变为氧化汞,液固分离(具体的液固分离为:使用5目的铁网过滤使废触媒和含汞的氢氧化钙溶液分离)后得到除汞废汞触媒;
步骤3、将浓度均为0.5mol/L的硝酸铁溶液(100mL)和硝酸锌溶液按照硝酸铁溶液和硝酸锌溶液摩尔比为2:1混合均匀得到浸渍液,将步骤2得到的除汞废汞触媒按照液固比为70:15mL/g置于浸渍液中超声震荡12h,过滤干燥得到浸渍物;
步骤4、将步骤3得到的浸渍物在温度为500℃下微波焙烧(微波焙烧微波功率为1000W)30min制备得到Fe-Zn光催化材料(Fe/Zn/AC光催化材料)。
本实施例制备得到的Fe-Zn光催化材料比表面积达到649m2/g以上,在紫外光辐照下,对染料亚甲基蓝具有非常高的吸附降解性能,对亚甲基蓝的去除率达到93.13%以上。
以上结合附图对本发明的具体实施方式作了详细说明,但是本发明并不限于上述实施方式,在本领域普通技术人员所具备的知识范围内,还可以在不脱离本发明宗旨的前提下作出各种变化。
Claims (2)
1.一种利用废汞触媒制备载Fe-Zn光催化材料,其特征在于具体步骤如下:
步骤1、将废汞触媒经振动筛除去粒度为5~10目的残渣,剩余的破碎至100~120目,用去离子水和5wt%稀盐酸洗涤后真空干燥得到废汞触媒原料;
步骤2、将步骤1得到的废汞触媒原料按照液固比为30~50:60~100mL/g加入到浓度为0.1mol/L氢氧化钙溶液中浸出3~6h,液固分离后得到除汞废汞触媒;
步骤3、将浓度均为0.5~1.1mol/L的硝酸铁溶液和硝酸锌溶液按照硝酸铁溶液和硝酸锌溶液摩尔比为2:1混合均匀得到浸渍液,将步骤2得到的除汞废汞触媒按照液固比为50~100:10~20mL/g置于浸渍液中超声震荡12h,过滤干燥得到浸渍物;
步骤4、将步骤3得到的浸渍物在温度为500℃~800℃下微波焙烧10~30min制备得到Fe-Zn光催化材料。
2.根据权利要求1所述的利用废汞触媒制备载Fe-Zn光催化材料,其特征在于:所述步骤4中微波焙烧微波功率为800~1200W。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811019229.4A CN108970619A (zh) | 2018-09-03 | 2018-09-03 | 一种利用废汞触媒制备载Fe-Zn光催化材料 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201811019229.4A CN108970619A (zh) | 2018-09-03 | 2018-09-03 | 一种利用废汞触媒制备载Fe-Zn光催化材料 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN108970619A true CN108970619A (zh) | 2018-12-11 |
Family
ID=64548639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201811019229.4A Pending CN108970619A (zh) | 2018-09-03 | 2018-09-03 | 一种利用废汞触媒制备载Fe-Zn光催化材料 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN108970619A (zh) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102814173A (zh) * | 2012-08-03 | 2012-12-12 | 长葛市九州化工有限公司 | 废活性炭汞触媒回收工艺 |
CN105032353A (zh) * | 2015-07-29 | 2015-11-11 | 昆明理工大学 | 一种改性活性炭的制备方法及改性活性炭的应用 |
CN106540703A (zh) * | 2016-12-06 | 2017-03-29 | 沈阳化工大学 | 一种Fe掺杂ZnO纳米光催化剂的制备方法 |
-
2018
- 2018-09-03 CN CN201811019229.4A patent/CN108970619A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102814173A (zh) * | 2012-08-03 | 2012-12-12 | 长葛市九州化工有限公司 | 废活性炭汞触媒回收工艺 |
CN105032353A (zh) * | 2015-07-29 | 2015-11-11 | 昆明理工大学 | 一种改性活性炭的制备方法及改性活性炭的应用 |
CN106540703A (zh) * | 2016-12-06 | 2017-03-29 | 沈阳化工大学 | 一种Fe掺杂ZnO纳米光催化剂的制备方法 |
Non-Patent Citations (3)
Title |
---|
PARISA ESKANDARI等: "Performance enhancement and optimization of photocatalytic cyanide degradation in aqueous solution using Zn (II) and Fe (III) oxides as nanostructure supported on activated carbon", 《J CHEM TECHNOL BIOTECHNOL》 * |
王小艳等: "废汞触媒回收技术的实验室研究", 《聚氯乙烯》 * |
秦浩正: "《中学生学习词典 化学卷》", 30 September 2012, 上海世界图书出版公司 * |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Huang et al. | Synthesis of novel CdSe QDs/BiFeO3 composite catalysts and its application for the photo-Fenton catalytic degradation of phenol | |
CN110655243A (zh) | 一种采用TiO2吸附-光催化还原处理含铀废水的方法 | |
JP2019526444A (ja) | 汚水処理方法及びシステム | |
CN103623782A (zh) | 复合磁性吸附材料的制备和去除废水中重金属离子的方法 | |
CN106799246A (zh) | 一种磁性MoS2@Fe3O4复合可见光催化剂及其制备方法和应用 | |
CN110550695B (zh) | 一种砂岩型铀矿中选取处理放射性含铀废水材料的方法 | |
CN108503015A (zh) | 一种污泥热解制备光Fenton催化剂的方法及催化剂和应用 | |
CN105727963A (zh) | 一种Fe、Cu共掺杂纳米ZnO光催化剂及其制备方法 | |
CN110756163A (zh) | 一种纳米CoFe2O4/碳纤维毡复合材料及其制备方法和应用 | |
CN104828902A (zh) | 一种花瓣状磁性氧化铁硫化钼复合物催化还原处理含铬废水的方法 | |
CN105458294B (zh) | 一种利用酸性矿山废水中的铁制备的纳米零价铁及其制备方法与应用 | |
CN105268479B (zh) | 基于铁与邻菲罗啉的高效光催化剂的制备方法 | |
CN107376838A (zh) | 一种磁性活性炭纤维的制备方法及应用 | |
Tony et al. | Solar photo-Fenton reagent with nanostructured iron oxide for Bismarck dye oxidation: an Egyptian apparel case study | |
Ullah et al. | Glycol stabilized magnetic nanoparticles for photocatalytic degradation of xylenol orange | |
CN108993510A (zh) | 一种活化过硫酸盐轮胎碳催化剂及制备与应用 | |
CN105253962A (zh) | 一种除砷剂的制备方法及应用 | |
CN113499779B (zh) | 一种铀还原的Co掺杂ZnO纳米微球光催化材料的制备及应用 | |
CN113060780B (zh) | 一种老化改性零价铁快速去除水中铀的方法 | |
Omar et al. | Engineering of ternary photocatalysts nanocomposites based NiS/ZrO2/CdS for boosting of photocatalytic degradation of organic pollutants | |
CN107597093A (zh) | 一种纳米颗粒自组装芍药状La3+掺杂ZnO及其制备方法和应用 | |
CN108970619A (zh) | 一种利用废汞触媒制备载Fe-Zn光催化材料 | |
CN110422904A (zh) | 一种利用改性生物质处理重金属离子废水的方法 | |
CN116637632A (zh) | 一种硫化物光催化材料、制备方法及其在含铀废水处理中的应用 | |
CN202796087U (zh) | 一种核废水处理用中转罐 |
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: 20181211 |
|
RJ01 | Rejection of invention patent application after publication |