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Wang W, Zhang Y, Xu L, Pei Y, Niu J. Efficient hydrogenation of p-chlorophenol and Cr(VI) driven by hydrogen rich balls over Pd/C catalysts. JOURNAL OF HAZARDOUS MATERIALS 2022; 437:129434. [PMID: 35897191 DOI: 10.1016/j.jhazmat.2022.129434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 06/05/2022] [Accepted: 06/18/2022] [Indexed: 06/15/2023]
Abstract
Catalytic hydrogenation can selectively destabilize and detoxify specific contaminants in water. Herein, to explore safer and more efficient hydrogen sources, hydrogen rich balls (HRBs) were researched and applied for hydrogenating p-chlorophenol and Cr(VI) over Pd/C catalyst. The results showed that HRBs can realize the sustained release of H2 by replacing the hydrogen in water, and generate the refined (micro/nano-sized) H2 bubble, which effectively improves the adsorption and activation effectively of H2 molecules on Pd/C catalyst, and the hydrogen atoms utilization efficiency during p-chlorophenol hydrodechlorination is as high as 3.5 %. Continuous flow experiments showed that rapid removal of p-chlorophenol with different concentrations could be achieved by adjusting the flow rate. Moreover, the high-toxic Cr(VI) was successfully reduced to the low-toxic Cr(III) in an appropriate pH range. This research is of far-reaching significance for realizing the detoxification of environmental pollutants and promoting the development of hydrogen economy.
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Affiliation(s)
- Weilai Wang
- Ministry of Education Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, School of Environment, Henan Normal University, Xinxiang, Henan 453007, China; State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Yuanzheng Zhang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Lei Xu
- College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China
| | - Yuansheng Pei
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
| | - Junfeng Niu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China; College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
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2
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Li YJ, Chen GE, Liu LJ, Xu ZL, Xu SJ, Xie HY, Chen Z, Wan JJ. Designing of a novel polyvinylidene fluoride/TiO 2/UiO-66-NH 2 membrane with photocatalytic antifouling properties using modified zirconium-based metal-organic framework. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 84:2380-2393. [PMID: 34810318 DOI: 10.2166/wst.2021.381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Novel polyvinylidene fluoride/TiO2/UiO-66-NH2 (PVDF/TiUN) membranes were produced by the delay phase separation method via introducing the TiO2/UiO-66-NH2 (TiUN) nanocomposite into PVDF casting solution. Interconnection of TiO2 and UiO-66-NH2 improved photocatalysis capacity and endowed PVDF/TiUN membranes with self-cleaning capability. Quantitative measurements showed that, firstly, PVDF/TiUN membranes exhibited improved photodegradation kinetics and efficiency (up to 88.1%) to Rhodamine B (RhB). Secondly, the performances of bovine serum albumin (BSA) rejection and permeation of PVDF/TiUN membranes outperformed those of other check samples, indicating enhanced hydrophilicity. Thirdly, rejection rate of BSA reached a breathtaking 98.14% and flux recovery ratio (FRR) of BSA reached a breathtaking 95.37%. Thus, given their excellent anti-contamination property and separation performance, the PVDF/TiUN membrane is very likely to be a novel water treatment membrane.
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Affiliation(s)
- Yi-Jing Li
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China E-mail:
| | - Gui-E Chen
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China E-mail:
| | - Lian-Jing Liu
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China E-mail:
| | - Zhen-Liang Xu
- State Key Laboratory of Chemical Engineering, Membrane Science and Engineering R&D Lab, Chemical Engineering Research Center, School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Sun-Jie Xu
- State Key Laboratory of Chemical Engineering, Membrane Science and Engineering R&D Lab, Chemical Engineering Research Center, School of Chemical Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Huan-Yin Xie
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China E-mail:
| | - Zhen Chen
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China E-mail:
| | - Jia-Jun Wan
- School of Chemical and Environmental Engineering, Shanghai Institute of Technology, 100 Haiquan Road, Shanghai 201418, China E-mail:
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Wang W, Zhang F, Zhang Y, Xu L, Pei Y, Niu J. Liquid-phase hydrodechlorination of trichloroethylene driven by nascent H 2 under an open system: Hydrogenation activity, solvent effect and sulfur poisoning. J Environ Sci (China) 2021; 108:96-106. [PMID: 34465441 DOI: 10.1016/j.jes.2021.02.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 02/10/2021] [Accepted: 02/10/2021] [Indexed: 06/13/2023]
Abstract
Hydrodechlorination is a promising technology for the remediation of water body contaminated with trichloroethylene (TCE). In this work, the liquid-phase hydrogenation of TCE by Raney Ni (R-Ni) and Pd/C under an open system have been studied, in which nascent H2 (Nas-H2) generated in situ from the cathode acted as a hydrogen source. Experimental results showed that TCE was completely eliminate from the solution through the synergistic effects of hydrodechlorination and air flotation due to the formation of continuous micro/nano-sized Nas-H2 bubbles from the cathode. Furthermore, the effects of inorganic anions and organic solvents on R-Ni and Pd/C hydrogenation activity were investigated, respectively. The results showed that NO3- and acetonitrile can form a competitive reaction with TCE; Sulfur with lone-pair electrons will cause irreversible poisoning to these two catalysts, and have a stronger inhibitory effect on Pd/C. This work helps to realize the separation of volatile halogenated compounds from water environment and provides certain data support for the choice of catalyst in the actual liquid-phase hydrogenation system.
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Affiliation(s)
- Weilai Wang
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Fan Zhang
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Yunfei Zhang
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Lei Xu
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China
| | - Yuansheng Pei
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China
| | - Junfeng Niu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China; Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan 523808, China.
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Jiang H, Liu Y, Xing W, Chen R. Porous Membrane Reactors for Liquid-Phase Heterogeneous Catalysis. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c01378] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hong Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
| | - Yefei Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
| | - Weihong Xing
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
| | - Rizhi Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, People’s Republic of China
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Keskin B, Ağtaş M, Ormancı-Acar T, Türken T, İmer DY, Ünal S, Menceloğlu YZ, Uçar-Demir T, Koyuncu İ. Halloysite nanotube blended nanocomposite ultrafiltration membranes for reactive dye removal. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2021; 83:271-283. [PMID: 33504693 DOI: 10.2166/wst.2020.573] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In this paper, ultrafiltration (UF) flat sheet membranes were manufactured by introducing two diverse halloysite nanotubes (HNT) size (5 μm and 63 μm) and five different (0, 0.63, 1.88, 3.13, 6.30 wt %) ratios by wet phase inversion. Some characterization methods which are contact angle, zeta potential, viscosity, scanning electron microscopy (SEM) and Young's modulus measurements were used for ultrafiltration membranes. Synthetic dye waters which were Setazol Red and Reactive Orange were used for filtration performance tests. These dye solutions were filtered in three different pH conditions and three different temperature conditions for pH and temperature resistance to understand how flux and removal efficiency change. The best water permeability results were obtained as 190.5 LMH and 192 LMH, for halloysite nanotubes (HNT) sizes of 5 μm and 63 μm respectively. The best water and dye performance of UF membrane contains 1.88% w/w ratio of HNT, which showed increased water flux and dye flux of membranes according to different HNT concentrations including ultrafiltration membranes.
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Affiliation(s)
- Başak Keskin
- Environmental Engineering Department, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey E-mail: ; National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey
| | - Meltem Ağtaş
- Environmental Engineering Department, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey E-mail: ; National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey
| | - Türkan Ormancı-Acar
- Faculty of Engineering, Department of Environmental Engineering, Istanbul University-Cerrahpaşa, İstanbul, Turkey
| | - Türker Türken
- National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey
| | - Derya Y İmer
- Environmental Engineering Department, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey E-mail:
| | - Serkan Ünal
- Sabanci University Nanotechnology Research and Application Center, 34956, Tuzla, Turkey
| | - Yusuf Z Menceloğlu
- Sabanci University Nanotechnology Research and Application Center, 34956, Tuzla, Turkey
| | | | - İsmail Koyuncu
- Environmental Engineering Department, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey E-mail: ; National Research Center on Membrane Technologies, Istanbul Technical University, Maslak, 34469, Istanbul, Turkey
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Sutherland AJ, Ruiz-Caldas MX, de Lannoy CF. Electro-catalytic microfiltration membranes electrochemically degrade azo dyes in solution. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118335] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Wang YX, Ma S, Huang MN, Yang H, Xu ZL, Xu Z. Ag NPs coated PVDF@TiO2 nanofiber membrane prepared by epitaxial growth on TiO2 inter-layer for 4-NP reduction application. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2019.115700] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Dai S, Zheng Y, Zhao Y, Chen Y, Niu D. Molten hydroxide for detoxification of chlorine-containing waste: Unraveling chlorine retention efficiency and chlorine salt enrichment. J Environ Sci (China) 2019; 82:192-202. [PMID: 31133264 DOI: 10.1016/j.jes.2019.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 03/08/2019] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Abstract
Hazardous waste dechlorination reduces the potential of creating dioxins during the incineration process. To investigate the salt effect on waste dechlorination, molten hydroxides with a low melting temperature were utilized for the pre-dechlorination and decomposition of chlorine-containing organic wastes (COWs) including trichlorobenzene (TCB), perchloroethylene, hexachlorobenzene and chlordane. The results showed that a eutectic mixture of caustic sodium and potassium hydroxides (41 wt.% NaOH and 59 wt.% KOH) led to a low melting point below 300°C and a relatively high chlorine retention efficiency (CRE) with TCB as a representative COWs. The amounts of hydroxides, reaction time, and temperature all had notable influence on CRE. When the mass ratio of hydroxides to TCB reached 30:1, approximately 98.1% of the TCB was destroyed within 2.5 hr at 300°C with CRE of 71.6%. According to the residue analysis, the shapes of reaction residues were irregular with particles becoming swollen and porous. The benzene ring and C-Cl bonds disappeared, while carboxyl groups formed in the residues. The stripped chlorine was retained and condensed to form chloride salts, and the relative abundance of the chloride ions associated with the mass of TCB in residues increased from 0 to 75.0% within the 2.5 hr reaction time. The observed concentration of dioxins in residues was 5.6 ngTEQ/kg. A reaction pathway and possible additional reactions that occur in this dechlorination system were proposed. Oxidizing agents may attack TCB and facilitate hydrogenation/dechlorination reactions, making this process a promising and environmentally friendly approach for chlorine-containing organic waste treatment.
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Affiliation(s)
- Shijin Dai
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
| | - Yilin Zheng
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Youcai Zhao
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
| | - Yu Chen
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Dongjie Niu
- College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
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9
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Hydrodechlorination of p-Chlorophenol on Pd-Coated Fe3O4@polypyrrole Catalyst with Ammonia Borane as Hydrogen Donor. Catal Letters 2019. [DOI: 10.1007/s10562-019-02664-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Sengur-Tasdemir R, Mokkapati VRSS, Koseoglu-Imer DY, Koyuncu I. Effect of polymer type on characterization and filtration performances of multi-walled carbon nanotubes (MWCNT)-COOH-based polymeric mixed matrix membranes. ENVIRONMENTAL TECHNOLOGY 2018; 39:1226-1237. [PMID: 28463036 DOI: 10.1080/09593330.2017.1325409] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 04/26/2017] [Indexed: 06/07/2023]
Abstract
Multi-walled carbon nanotubes (MWCNTs) can be used for the fabrication of mixed matrix polymeric membranes that can enhance filtration perfomances of the membranes by modifying membrane surface properties. In this study, detailed characterization and filtration performances of MWCNTs functionalized with COOH group, blended into polymeric flat-sheet membranes were investigated using different polymer types. Morphological characterization was carried out using atomic force microscopy, scanning electron microscopy and contact angle measurements. For filtration performance tests, protein, dextran, E. coli suspension, Xanthan Gum and real activated sludge solutions were used. Experimental data and analyses revealed that Polyethersulfone (PES) + MWCNT-COOH mixed matrix membranes have superior performance abilities compared to other tested membranes.
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Affiliation(s)
- Reyhan Sengur-Tasdemir
- a Graduate School of Science, Engineering and Technology, Department of Nanoscience and Nanoenginering , Istanbul Technical University , Istanbul , Turkey
- b National Research Center on Membrane Technologies , Istanbul Technical University , Istanbul , Turkey
| | - Venkata R S S Mokkapati
- c Systems and Synthetic Biology, Department of Biology and Biological Engineering , Chalmers University of Technology , Gothenburg , Sweden
| | - Derya Y Koseoglu-Imer
- b National Research Center on Membrane Technologies , Istanbul Technical University , Istanbul , Turkey
- d Department of Environmental Engineering, Civil Engineering Faculty , Istanbul Technical University , Istanbul , Turkey
| | - Ismail Koyuncu
- b National Research Center on Membrane Technologies , Istanbul Technical University , Istanbul , Turkey
- d Department of Environmental Engineering, Civil Engineering Faculty , Istanbul Technical University , Istanbul , Turkey
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