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Chen T, Xu P, Chen X, Wang T, Fu K, Qiu M, Fan Y. High-flux ceramic membrane derived from UV-curable slurry for efficient separation of nanoparticles suspension. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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2
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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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3
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Critical analysis of various supporting mediums employed for the incapacitation of silver nanomaterial for aniline and phenolic pollutants: A review. KOREAN J CHEM ENG 2021. [DOI: 10.1007/s11814-017-0192-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Ham S, Jeong DW, Jang DJ. Facile fabrication of reusable FeOOH-polycarbonate membranes for effective separation of organic molecules. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.117513] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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5
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Coagulation and Dissolution of CuO Nanoparticles in the Presence of Dissolved Organic Matter Under Different pH Values. SUSTAINABILITY 2019. [DOI: 10.3390/su11102825] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The increased use of copper oxide nanoparticles (CuO NPs) in commercial products and industrial applications raises concerns about their adverse effects on aquatic life and human health. Therefore, the current study explored the removal of CuO NPs from water via coagulation by measuring solubility under various pH values and humic acid (HA) concentrations. The results showed that the media pH significantly affected the coagulation efficiency of CuO NPs (30 mg/L) under various (0–0.30 mM) ferric chloride (FC) dosages. The concentration of dissolved Cu2+ ions at pH 3–6 was (16.5–4.8 mg/L), which was higher than at other studied pH (7–11). Moreover, the simultaneous effect of coagulants and charge neutralization at pH 6–8 enhanced the removal of CuO NPs. At a lower FC (0–0.05 mM) dosage, the higher HA concentration inhibited the aggregation of CuO NPs. However, at the optimum dose of (0.2 mM) FC, the efficiency of turbidity removal and solubility of CuO NPs between pH 8 and 11 was above 98% and 5%, respectively, probably due to coagulant enmeshment. Our study suggested that coagulation was effective in removing the CuO NPs from the complex matrices with pH values ranging from 8–11. The findings of the present study provide insight into the coagulation and dissolution behavior of CuO NPs during the water treatment process.
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Zhang Z, Adedeji I, Chen G, Tang Y. Chemical-Free Recovery of Elemental Selenium from Selenate-Contaminated Water by a System Combining a Biological Reactor, a Bacterium-Nanoparticle Separator, and a Tangential Flow Filter. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:13231-13238. [PMID: 30335990 DOI: 10.1021/acs.est.8b04544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Biological selenate (SeO42-) reduction to elemental selenium nanoparticles (SeNPs) has been intensively studied but little practiced because of the additional cost associated with separation of SeNPs from water. Recovery of the SeNPs as a valuable resource has been researched to make the approach more competitive. Separation of the intracellular SeNPs from the biomass usually requires the addition of chemicals. In this research, a novel approach that combined a biological reactor, a bacterium-SeNP separator, and a tangential flow ultrafiltration module (TFU) was investigated to biologically reduce selenate and separate the SeNPs, biomass, and water from each other. This approach efficiently removed and recovered selenium while eliminating the use of chemicals for separation. The three units in the approach worked in synergism to achieve the separation and recovery. The TFU module retained the biomass in the system, which increased the biomass retention time and allowed for more biomass decay through which intracellular SeNPs could be released and recovered. SeNP aggregates were separated from bacterial aggregates due to their different interactions with a tilted polyethylene sheet in the bacterium-SeNP separator. SeNP aggregates stayed on the polyethylene sheet while bacterial aggregates settled down to the bottom of the separator.
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Affiliation(s)
- Zhiming Zhang
- Department of Civil and Environmental Engineering, FAMU-FSU College of Engineering , Florida State University , 2525 Pottsdamer Street , Tallahassee , Florida 32310 , United States
| | - Itunu Adedeji
- Department of Civil and Environmental Engineering, FAMU-FSU College of Engineering , Florida State University , 2525 Pottsdamer Street , Tallahassee , Florida 32310 , United States
| | - Gang Chen
- Department of Civil and Environmental Engineering, FAMU-FSU College of Engineering , Florida State University , 2525 Pottsdamer Street , Tallahassee , Florida 32310 , United States
| | - Youneng Tang
- Department of Civil and Environmental Engineering, FAMU-FSU College of Engineering , Florida State University , 2525 Pottsdamer Street , Tallahassee , Florida 32310 , United States
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Orooji Y, Liang F, Razmjou A, Liu G, Jin W. Preparation of anti-adhesion and bacterial destructive polymeric ultrafiltration membranes using modified mesoporous carbon. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.05.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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9
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Highly efficient synthesis of cumene via benzene isopropylation over nano-sized beta zeolite in a submerged ceramic membrane reactor. Sep Purif Technol 2016. [DOI: 10.1016/j.seppur.2016.06.031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Li D, Hu J, Low ZX, Zhong Z, Wang Y. Hydrophilic ePTFE Membranes with Highly Enhanced Water Permeability and Improved Efficiency for Multipollutant Control. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b00086] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Dongyan Li
- National Engineering Research Center for Special Separation
Membrane, Jiangsu National Synergetic Innovation Center for Advanced
Materials (SICAM), Nanjing Tech University, Nanjing 210009, P. R. China
- Chemical Engineering Department, Nanjing Polytechnic Institute, Nanjing 210048, P. R. China
| | - Jian Hu
- National Engineering Research Center for Special Separation
Membrane, Jiangsu National Synergetic Innovation Center for Advanced
Materials (SICAM), Nanjing Tech University, Nanjing 210009, P. R. China
| | - Ze-Xian Low
- Centre for Advanced Separations Engineering, Department
of Chemical Engineering, University of Bath, Claverton Down Road, Bath, North East Somerset BA2 7AY, United Kingdom
| | - Zhaoxiang Zhong
- National Engineering Research Center for Special Separation
Membrane, Jiangsu National Synergetic Innovation Center for Advanced
Materials (SICAM), Nanjing Tech University, Nanjing 210009, P. R. China
| | - Yong Wang
- National Engineering Research Center for Special Separation
Membrane, Jiangsu National Synergetic Innovation Center for Advanced
Materials (SICAM), Nanjing Tech University, Nanjing 210009, P. R. China
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Elcik H, Cakmakci M, Ozkaya B. The fouling effects of microalgal cells on crossflow membrane filtration. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2015.10.043] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Zhong Z, Xu Z, Sheng T, Yao J, Xing W, Wang Y. Unusual Air Filters with Ultrahigh Efficiency and Antibacterial Functionality Enabled by ZnO Nanorods. ACS APPLIED MATERIALS & INTERFACES 2015; 7:21538-21544. [PMID: 26360532 DOI: 10.1021/acsami.5b06810] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Porous membranes/filters that can remove airborne fine particulates, for example, PM2.5, with high efficiency at low energy consumption are of significant interest. Herein, we report on the fabrication of a new class of unusual superior air filters with ultrahigh efficiency and an interesting antibacterial functionality. We use atomic layer deposition (ALD) to uniformly seed ZnO on the surface of expanded polytetrafluoroethylene (ePTFE) matrix, and then synthesize well-aligned ZnO nanorods with tunable widths and lengths from the seeds under hydrothermal conditions. The presence of ZnO nanorods reduces the effective pore sizes of the ePTFE filters at little expense of energy consumption. As a consequence, the filters exhibit exceptional dust removal efficiencies greater than 99.9999% with much lower energy consumption than conventional filters. Significantly, the presence of ZnO nanorods strongly inhibits the propagation of both Gram positive and negative bacteria on the filters. Therefore, the functionalized filters can potentially overcome the inherent limitation in the trade-off effect and imply their superiority for controlling indoor air quality.
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Affiliation(s)
- Zhaoxiang Zhong
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Specialized Separation Membranes, Nanjing Tech University , Nanjing 210009, China
| | - Zhe Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Specialized Separation Membranes, Nanjing Tech University , Nanjing 210009, China
| | - Ting Sheng
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Specialized Separation Membranes, Nanjing Tech University , Nanjing 210009, China
| | - Jianfeng Yao
- College of Chemical Engineering, Nanjing Forestry University , Nanjing 210037, China
| | - Weihong Xing
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Specialized Separation Membranes, Nanjing Tech University , Nanjing 210009, China
| | - Yong Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, National Engineering Research Center for Specialized Separation Membranes, Nanjing Tech University , Nanjing 210009, China
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Bouwmeester H, Hollman PCH, Peters RJB. Potential Health Impact of Environmentally Released Micro- and Nanoplastics in the Human Food Production Chain: Experiences from Nanotoxicology. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:8932-47. [PMID: 26130306 DOI: 10.1021/acs.est.5b01090] [Citation(s) in RCA: 599] [Impact Index Per Article: 66.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
High concentrations of plastic debris have been observed in the oceans. Much of the recent concern has focused on microplastics in the marine environment. Recent studies of the size distribution of the plastic debris suggested that continued fragmenting of microplastics into nanosized particles may occur. In this review we assess the current literature on the occurrence of environmentally released micro- and nanoplastics in the human food production chain and their potential health impact. The currently used analytical techniques introduce a great bias in the knowledge, since they are only able to detect plastic particles well above the nanorange. We discuss the potential use of the very sensitive analytical techniques that have been developed for the detection and quantification of engineered nanoparticles. We recognize three possible toxic effects of plastic particles: first due to the plastic particles themselves, second to the release of persistent organic pollutant adsorbed to the plastics, and third to the leaching of additives of the plastics. The limited data on microplastics in foods do not predict adverse effect of these pollutants or additives. Potential toxic effects of microplastic particles will be confined to the gut. The potential human toxicity of nanoplastics is poorly studied. Based on our experiences in nanotoxicology we prioritized future research questions.
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Affiliation(s)
- Hans Bouwmeester
- RIKILT Wageningen University and Research Center, P.O. Box 230, Akkermaalsbos 2, 6700 AE, Wageningen, The Netherlands
| | - Peter C H Hollman
- RIKILT Wageningen University and Research Center, P.O. Box 230, Akkermaalsbos 2, 6700 AE, Wageningen, The Netherlands
| | - Ruud J B Peters
- RIKILT Wageningen University and Research Center, P.O. Box 230, Akkermaalsbos 2, 6700 AE, Wageningen, The Netherlands
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Liu Y, Tourbin M, Lachaize S, Guiraud P. Nanoparticles in wastewaters: Hazards, fate and remediation. POWDER TECHNOL 2014. [DOI: 10.1016/j.powtec.2013.08.025] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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15
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Ahmad A, Mat Yasin N, Derek C, Lim J. Harvesting of microalgal biomass using MF membrane: Kinetic model, CDE model and extended DLVO theory. J Memb Sci 2013. [DOI: 10.1016/j.memsci.2013.07.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Removal of SiO2 nanoparticles from industry wastewaters and subsurface waters by ultrafiltration: Investigation of process efficiency, deposit properties and fouling mechanism. Sep Purif Technol 2013. [DOI: 10.1016/j.seppur.2013.01.043] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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JIANG H, MENG L, CHEN R, JIN W, XING W, XU N. Progress on Porous Ceramic Membrane Reactors for Heterogeneous Catalysis over Ultrafine and Nano-sized Catalysts. Chin J Chem Eng 2013. [DOI: 10.1016/s1004-9541(13)60460-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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18
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Wu N, Wyart Y, Liu Y, Rose J, Moulin P. An overview of solid/liquid separation methods and size fractionation techniques for engineered nanomaterials in aquatic environment. ACTA ACUST UNITED AC 2013. [DOI: 10.1080/09593330.2013.788073] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Wang P, Lim TT. Membrane vis-LED photoreactor for simultaneous penicillin G degradation and TiO2 separation. WATER RESEARCH 2012; 46:1825-1837. [PMID: 22244971 DOI: 10.1016/j.watres.2011.12.057] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Revised: 12/17/2011] [Accepted: 12/23/2011] [Indexed: 05/31/2023]
Abstract
The hybrid membrane photoreactor (MPR) combining a photoreactor irradiated with visible-light-emitting diode (vis-LED) and a cross-flow microfiltration (MF) membrane module was investigated in both closed-loop and continuous flow-through modes for the simultaneous degradation of penicillin G (PG) and separation of visible-light responsive TiO(2) particles, namely C-sensitized-N-doped TiO(2) (T300) and C-N-S tridoped TiO(2) (T0.05-450). The turbidity of permeate water was <0.2 NTU for both T300 and T0.05-450 suspensions in the MPR system operated at different transmembrane pressures (TMPs) and cross-flow velocities (CFVs), indicating effective separation of TiO(2) particles by the MF membrane. The operations at a higher TMP or lower CFV were more prone to induce TiO(2) deposition on the membrane surface without backwashing, which resulted in the membrane fouling, the loss of TiO(2) from the photoreactor and the decrease of PG photocatalytic degradation efficiency. 75% and 84% of PG were degraded in the closed-loop MPR without backwashing operated at 10 kPa and 0.15 m s(-1) after 4 h of vis-LED irradiation using 1.0 g L(-1) of T300 and T0.05-450, respectively. With backwashing of the membrane, the PG photocatalytic degradation efficiencies in the closed-loop MPR could be significantly enhanced to achieve 93% and 95% using 1.0 g L(-1) of T300 and T0.05-450, respectively, which were almost comparable to those achieved in the batch photoreactor. Due to its shorter hydraulic residence time in the photoreactor, the PG degradation efficiency in the continuous flow-through MPR with backwashing was lower than that achieved in the closed-loop MPR.
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Affiliation(s)
- Penghua Wang
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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Damodar RA, You SJ, Chiou GW. Investigation on the conditions mitigating membrane fouling caused by TiO2 deposition in a membrane photocatalytic reactor (MPR) used for dye wastewater treatment. JOURNAL OF HAZARDOUS MATERIALS 2012; 203-204:348-356. [PMID: 22226722 DOI: 10.1016/j.jhazmat.2011.12.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Revised: 11/24/2011] [Accepted: 12/12/2011] [Indexed: 05/31/2023]
Abstract
In this study, the effects of MPR's operating conditions such as permeate flux, solution pH, and membrane hydrophobicity on separation characteristics and membrane fouling caused by TiO(2) deposition were investigated. The extent of fouling was measured in terms of TMP and tank turbidity variation. The results showed that, at mildly acidic conditions (pH ≈ 5), the turbidity within the tank decreased and the extent of turbidity drop increased with increasing flux for all the membranes. On the other hand, at pH ≥ 7, the turbidity remained constant at all flux and for all membranes tested. The fouling variation at different pH was closely linked with the surface charge (zeta potential) and hydrophilicity of both membrane and particles. It was observed that the charge differences between the particles and membranes accelerate the intensity of fouling and binding of TiO(2) particles on the membrane surface under different pH conditions. The presence of a very thin layer of TiO(2) can alter the hydrophilicity of the membranes and can slightly decrease the TMP (filtration resistance) of the fouled membranes. Besides, the resistance offered by the dense TiO(2) cake layer would dominate this hydrophilic effect of TiO(2) particles, and it may not alter the filtration resistance of the fouled membranes.
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Affiliation(s)
- Rahul-Ashok Damodar
- Department of Bioenvironmental Engineering and R&D Center for Membrane Technology, Chung Yuan Christian University, Chung li 320, Taiwan, ROC
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