1
|
Wang Z, Jiang S, Lu Y, Zhou H, Yang Z, Deng J, Pang L. Modification of polyvinylidene fluoride membrane with ciprofloxacin to improve the bacteriostatic performance. CHEMOSPHERE 2024; 363:142831. [PMID: 38996983 DOI: 10.1016/j.chemosphere.2024.142831] [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: 04/26/2024] [Revised: 07/01/2024] [Accepted: 07/09/2024] [Indexed: 07/14/2024]
Abstract
The common polyvinylidene fluoride (PVDF) membrane itself is susceptible to membrane fouling, especially biofouling, which is a serious threat. In this study, PVDF membrane was modified with ciprofloxacin (CIP) through co-blending to investigate the filtration properties, bacterial inhibition and fouling resistance. Modified membranes were prepared by adding 0.3 g (MC0.3), 0.6 g (MC0.6), 0.9 g (MC0.9) and 1.2 g (MC1.2) CIP per 100 g casting solution. Among these modified membranes, MC0.6 showed the best filtration performances, with the pure water flux stabilized at about 416.67 L/(m2·h) and bovine serum albumin (BSA) rejection of 92.0% at a trans-membrane pressure of 0.1 MPa. The pore size was reduced, the average roughness was reduced to 29.4 nm, the contact angle was lowered to 68.9°, and the hydrophilicity was greatly improved. The width of the inhibition circle produced by MC0.6 was 0.35-0.45 mm, and the modified membrane showed good inhibition of non-specific bacteria and algal removal during urban river water filtration. The rejection of BSA was increased by 16.32% compared to the base membrane and the adsorption rate for BSA was reduced by 68.45%. In addition, the removal of conventional pollutants in urban river water by the modified membranes for was also improved. Compared with that of the base membrane, the removal of TN, NH3-N, TP and COD by MC0.6 was increased by 10.58%, 12.45%, 15.44% and 13.53%. The results showed that CIP co-blending modified PVDF membrane could effectively improve membrane performances and has good value for water treatment.
Collapse
Affiliation(s)
- Zuxin Wang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Suqi Jiang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Yuhan Lu
- School of Computer Engineering and Science, Shanghai University, Shanghai, 200444, China
| | - Haidong Zhou
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China.
| | - Zhiyun Yang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Jixin Deng
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| | - Lidan Pang
- School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai, 200093, China
| |
Collapse
|
2
|
Rodríguez-Sáez L, Landaburu-Aguirre J, García-Calvo E, Molina S. Application of Recycled Ultrafiltration Membranes in an Aerobic Membrane Bioreactor (aMBR): A Validation Study. MEMBRANES 2024; 14:149. [PMID: 39057657 PMCID: PMC11279199 DOI: 10.3390/membranes14070149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2024] [Revised: 06/27/2024] [Accepted: 07/02/2024] [Indexed: 07/28/2024]
Abstract
A validation study using recycled ultrafiltration membranes (r-UF) on an aerobic membrane bioreactor (aMBR) was conducted for the first time. Four different polyethersulfone (PES) membranes were tested using synthetic urban wastewater (COD 0.4-0.5 g/L) during two experimental periods: (i) recycled ultrafiltration membrane (r-UF) and commercial UF membrane (molecular weight cut-off (MWCO) 150 kDa) (c-150 kDa); (ii) r-UF membrane modified by dip-coating using catechol (CA) and polyethyleneimine (PEI) (mr-UF) and c-20 kDa membrane. Permeability, fouling behavior, and permeate quality were evaluated. Extensive membrane characterization was conducted using scanning electron microscopy (SEM), atomic force microscopy (AFM), energy-dispersive X-ray (EDX), and confocal laser scanning microscopy (CLSM). Permeate quality for r-UF and mr-UF membranes was excellent and comparable to that obtained using commercial membranes under similar conditions. Additionally, r-UF and mr-UF membranes presented a steadier performance time. Additionally, r-UF membrane demonstrated less tendency to be fouled (Rf, m-1) r-UF 7.92 ± 0.57 × 1012; mr-UF 9.90 ± 0.14 × 1012, c-150 kDa 1.56 ± 0.07 × 1013 and c-20 kDa 1.25 ± 0.50 × 1013. The r-UF membrane showed an excellent antibiofouling character. Therefore, r-UF membranes can be successfully implemented for wastewater treatment in aMBR, being a sustainable and cost-effective alternative to commercial membranes that can contribute to overcome membrane fouling and membrane replacement issues.
Collapse
Affiliation(s)
- Laura Rodríguez-Sáez
- IMDEA Water Institute, Av. Punto Com, 2, Alcalá de Henares, 28805 Madrid, Spain
- Chemical Engineering Department, Alcalá University, Alcalá de Henares, 28805 Madrid, Spain
| | | | - Eloy García-Calvo
- IMDEA Water Institute, Av. Punto Com, 2, Alcalá de Henares, 28805 Madrid, Spain
- Chemical Engineering Department, Alcalá University, Alcalá de Henares, 28805 Madrid, Spain
| | - Serena Molina
- IMDEA Water Institute, Av. Punto Com, 2, Alcalá de Henares, 28805 Madrid, Spain
| |
Collapse
|
3
|
Tuncay G, Türken T, Koyuncu İ. Investigation of different molecular weight Polyvinylidene Fluoride (PVDF) polymer for the fabrication and performance of braid hollow fiber membranes. ENVIRONMENTAL TECHNOLOGY 2024; 45:404-417. [PMID: 35946589 DOI: 10.1080/09593330.2022.2112092] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
In the current study, braid reinforced membranes were fabricated from polyvinylidene fluoride (PVDF) polymers with two different molecular weights, and the blending of the polymers in a 1:1 ratio to upgrade the performance of the membrane. Characterization, filtration studies, and membrane bioreactor (MBR) application were done to evaluate membrane performance by applying the same operation conditions on each membrane. Characterization studies indicated that the fabricated membrane from blending polymers was a hydrophilic structure with a contact angle of 50.78° and smoother surface properties compared to the other fabricated membranes. According to the MBR results, at the end of the operation process, TMP levels of the membrane from the blending method are found 150 mbar, membrane from high molecular weight PVDF polymer had 250 mbar, and membrane from low molecular weight PVDF polymer had 800 mbar. As a consequence of the investigation, it is seen that the hydrophilic structure of the membrane allows the pollutant to adsorb less to the blend membrane surface, and the lower roughness is also a factor in reducing fouling.
Collapse
Affiliation(s)
- Gizem Tuncay
- National Research Center on Membrane Technologies, Istanbul Technical University, Istanbul, Turkey
- Department of Environmental Engineering, Istanbul Technical University Istanbul, Turkey
| | - Türker Türken
- National Research Center on Membrane Technologies, Istanbul Technical University, Istanbul, Turkey
- Department of Environmental Engineering, Istanbul Technical University Istanbul, Turkey
| | - İsmail Koyuncu
- National Research Center on Membrane Technologies, Istanbul Technical University, Istanbul, Turkey
- Department of Environmental Engineering, Istanbul Technical University Istanbul, Turkey
| |
Collapse
|
4
|
Lu D, Fatehi P. Interaction of deformable solid and hollow particles with rough surface morphology in colloidal systems. J Colloid Interface Sci 2023; 630:497-510. [DOI: 10.1016/j.jcis.2022.10.070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/07/2022] [Accepted: 10/15/2022] [Indexed: 11/06/2022]
|
5
|
Lu D, Fatehi P. Interaction of rough ellipsoidal particles with random surface asperities in colloidal systems. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
6
|
Hu D, Ren X, Fu H, Wang Y, Feng X, Li H. Constructing highly rough skin layer of thin film (nano)composite polyamide membranes to enhance separation performance: A review. J Appl Polym Sci 2022. [DOI: 10.1002/app.52692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Dan Hu
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry and Key Laboratory of Brewing Molecular Engineering of China Light Industry School of Light Industry, Beijing Technology and Business University Beijing P. R. China
| | - Xiaomin Ren
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry and Key Laboratory of Brewing Molecular Engineering of China Light Industry School of Light Industry, Beijing Technology and Business University Beijing P. R. China
| | - Hongyan Fu
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry and Key Laboratory of Brewing Molecular Engineering of China Light Industry School of Light Industry, Beijing Technology and Business University Beijing P. R. China
| | - Yu Wang
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry and Key Laboratory of Brewing Molecular Engineering of China Light Industry School of Light Industry, Beijing Technology and Business University Beijing P. R. China
| | - Xudong Feng
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry and Key Laboratory of Brewing Molecular Engineering of China Light Industry School of Light Industry, Beijing Technology and Business University Beijing P. R. China
| | - Hehe Li
- Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry and Key Laboratory of Brewing Molecular Engineering of China Light Industry School of Light Industry, Beijing Technology and Business University Beijing P. R. China
| |
Collapse
|
7
|
Interfacial interactions of rough spherical surfaces with random topographies. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128570] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
8
|
Guo J, Zhang Y, Chen F, Chai Y. A Membrane with Strong Resistance to Organic and Biological Fouling Using Graphene Oxide and D-Tyrosine as Modifiers. MEMBRANES 2022; 12:membranes12050486. [PMID: 35629812 PMCID: PMC9145901 DOI: 10.3390/membranes12050486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 04/07/2022] [Accepted: 04/28/2022] [Indexed: 02/06/2023]
Abstract
Membrane fouling markedly influences the service life and performance of the membrane during the using process. Herein, hydrophilic polyvinylidene fluoride (PVDF) nanocomposite (P-GO-DAA) membranes with antifouling and anti-biofouling characteristics were fabricated by employing graphene oxide (GO) and different concentrations of D-Tyrosine. The structural properties of the prepared nanocomposite membranes as well as pure PVDF membranes were characterized using FTIR, XPS, SEM, AFM, and contact angle analysis. It was found that the introduction of GO fillers made an excellent antifouling performance compared to pure PVDF indicated by the pure water flux, flux recovery rate, and rejection rate during ultrafiltration experiments as a result of the formation of the hydrophilic and more porous membrane. In particular, the nanocomposite membranes showed an increased flux of 305.27 L/(m2·h) and the rejection of 93.40% for the mixed pollutants solution (including Bull Serum Albumin, Sodium Alginate, and Humic Acid). Besides, the outstanding anti-biofouling activity was shown by the P-GO-DAA membrane with the properties of D-Tyrosine for inhibiting biofilm formation during the bacterial adhesion experiments. Furthermore, the adhesion ratio of bacteria on the membrane was 26.64% of the P-GO-DAA membrane compared to 84.22% of pure PVDF. These results were confirmed by CLSM.
Collapse
Affiliation(s)
- Jiarui Guo
- Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China;
- Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China; (F.C.); (Y.C.)
| | - Yan Zhang
- Key Laboratory of Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China;
- Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China; (F.C.); (Y.C.)
- Correspondence:
| | - Fenghua Chen
- Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China; (F.C.); (Y.C.)
| | - Yuman Chai
- Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China; (F.C.); (Y.C.)
| |
Collapse
|
9
|
Lee WX, Akhavan Farid A, Namazi H. Investigation of anodised surface complexity and its correlation with surface hydrophilicity using fractal analysis. RESULTS IN SURFACES AND INTERFACES 2022. [DOI: 10.1016/j.rsurfi.2022.100046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
|
10
|
Rajupet S. DLVO Interactions between Particles and Rough Surfaces: An Extended Surface Element Integration Method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:13208-13217. [PMID: 34730964 DOI: 10.1021/acs.langmuir.1c01492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The surface element integration (SEI) method is a computationally facile technique for calculating DLVO interactions between particles and surfaces. This method yields the exact total DLVO interaction between a particle and a flat surface; however, all surfaces have some degree roughness that profoundly affects the interaction. Previously, an ad hoc approximate method has been used to extend the SEI method to interactions between particles and surfaces with arbitrary morphology. Here we derive a more rigorous approximate method based on the fundamental scaling of DLVO interactions, which approaches the exact solution as the separation distance decreases regardless of the particle or surface morphology. We verify this method by comparison to the exact van der Waals energy when roughness is present on the particle and surface. The accuracy of this method at small separations makes it well-suited for the contexts of particle adhesion and deposition in which the length scale of interaction is on the order of angstroms and nanometers, respectively.
Collapse
Affiliation(s)
- Siddharth Rajupet
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, Cleveland, Ohio 44106, United States
| |
Collapse
|
11
|
Noormohamadi A, Homayoonfal M, Mehrnia MR, Davar F. Employing magnetism of Fe 3O 4 and hydrophilicity of ZrO 2 to mitigate biofouling in magnetic MBR by Fe 3O 4-coated ZrO 2/PAN nanocomposite membrane. ENVIRONMENTAL TECHNOLOGY 2020; 41:2683-2704. [PMID: 30741624 DOI: 10.1080/09593330.2019.1579870] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 01/26/2019] [Indexed: 06/09/2023]
Abstract
The aim of this research is benefiting from the synergistic effect of the simultaneous presence of Fe3O4 and ZrO2 in the form of Fe3O4-coated ZrO2 (Fe3O4@ZrO2) nanoparticles within the structure of PAN membrane to reduce membrane fouling. The role of Fe3O4 nanoparticles in increasing the pore size and magnetic saturation as well as the role of ZrO2 in decreasing surface roughness and hydrophobicity can mitigate membrane fouling in magnetic-assisted membrane bioreactors. For this purpose, Fe3O4, ZrO2, and Fe3O4@ZrO2 nanoparticles were embedded into PAN membrane structure and magnetic (M nM), hydrophilic (H nM), and magnetic-hydrophilic (HM nM) membranes were synthesized. H 1M (1ZrO2/PAN) membrane with a contact angle of 31 degrees, M 1N (1Fe3O4/PAN) with a pore size of 90 nm, and H 3M (3ZrO2/PAN) membrane with an RMS roughness of 13.5 nm were the most hydrophilic, porous, and smoothest membranes, respectively. High sensitivity to magnetic field along with high porosity, high hydrophilicity and low surface roughness simultaneously exist within the structure of MHMs membranes, such that MH 1M (1Fe3O4@ZrO2/PAN) indicated 116% greater flux, 121% greater flux recovery, and 85% less total filtration resistance in comparison with the blank membrane in magnetic membrane bioreactor, at a magnetic field intensity of 120 mT and MLSS = 10,000 mg/l. As an overall conclusion, the output of this research was compared with other research in term of normalized flux. Results reveal that at MLSS = 10,000 mg/l, HRT = 8 h and TMP = 0.3 bar, MH 1M membrane has normalized flux equal to 1.56 g/m2 h bar which is an acceptable value compared to normalized flux reported by other researchers.
Collapse
Affiliation(s)
- Amin Noormohamadi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Maryam Homayoonfal
- Department of Chemical Engineering, College of Engineering, University of Isfahan, Isfahan, Iran
| | - Mohammad Reza Mehrnia
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Fatemeh Davar
- Department of Chemistry, Isfahan University of Technology, Isfahan, Iran
| |
Collapse
|
12
|
Xu H, Xiao K, Wang X, Liang S, Wei C, Wen X, Huang X. Outlining the Roles of Membrane-Foulant and Foulant-Foulant Interactions in Organic Fouling During Microfiltration and Ultrafiltration: A Mini-Review. Front Chem 2020; 8:417. [PMID: 32582627 PMCID: PMC7283953 DOI: 10.3389/fchem.2020.00417] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 04/21/2020] [Indexed: 12/15/2022] Open
Abstract
Membrane fouling remains a notorious problem in microfiltration (MF) and ultrafiltration (UF), and a systematic understanding of the fouling mechanisms is fundamental for solving this problem. Given a wide assortment of fouling studies in the literature, it is essential that the numerous pieces of information on this topic could be clearly compiled. In this review, we outline the roles of membrane-foulant and foulant-foulant intermolecular interactions in MF/UF organic fouling. The membrane-foulant interactions govern the initial pore blocking and adsorption stage, whereas the foulant-foulant interactions prevail in the subsequent build-up of a surface foulant layer (e.g., a gel layer). We classify the interactions into non-covalent interactions (e.g., hydrophobic and electrostatic interactions), covalent interactions (e.g., metal-organic complexation), and spatial effects (related to pore structure, surface morphology, and foulants size for instance). They have either short- or long-range influences on the transportation and immobilization of the foulant toward the membrane. Specifically, we profile the individual impacts and interplay between the different interactions along the fouling stages. Finally, anti-fouling strategies are discussed for a targeted control of the membrane-foulant and foulant-foulant interactions.
Collapse
Affiliation(s)
- Hao Xu
- School of Civil Engineering, Guangzhou University, Guangzhou, China
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
| | - Kang Xiao
- College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China
- Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China
| | - Xiaomao Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Shuai Liang
- College of Environmental Science and Engineering, Beijing Forestry University, Beijing, China
| | - Chunhai Wei
- School of Civil Engineering, Guangzhou University, Guangzhou, China
| | - Xianghua Wen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
| | - Xia Huang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing, China
- Research and Application Center for Membrane Technology, School of Environment, Tsinghua University, Beijing, China
| |
Collapse
|
13
|
Persico M, Daigle G, Kadel S, Perreault V, Pellerin G, Thibodeau J, Bazinet L. Predictive models for determination of peptide fouling based on the physicochemical characteristics of filtration membranes. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2020.116602] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
14
|
Rezania H, Vatanpour V, Arabpour A, Shockravi A, Ehsani M. Structural manipulation of PES constituents to prepare advanced alternative polymer for ultrafiltration membrane. J Appl Polym Sci 2019. [DOI: 10.1002/app.48690] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Hamidreza Rezania
- Department of Organic and Polymer Chemistry, Faculty of ChemistryKharazmi University, P.O. Box 15719‐14911 Tehran Iran
| | - Vahid Vatanpour
- Department of Applied Chemistry, Faculty of ChemistryKharazmi University, P.O. Box 15719‐14911 Tehran Iran
| | - Atefeh Arabpour
- Department of Organic and Polymer Chemistry, Faculty of ChemistryKharazmi University, P.O. Box 15719‐14911 Tehran Iran
| | - Abbas Shockravi
- Department of Organic and Polymer Chemistry, Faculty of ChemistryKharazmi University, P.O. Box 15719‐14911 Tehran Iran
| | - Morteza Ehsani
- Iran Polymer and Petrochemical Institute, P.O. Box 14965/115 Tehran Iran
| |
Collapse
|
15
|
Mei X, Chen Y, Fang C, Xu L, Li J, Bi S, Liu J, Wang Y, Li P, Guo Z, Qin H, Gu J, Xiao Y, Yang X, Zhou B, Zhang Z. Acetonitrile wastewater treatment enhanced by a hybrid membrane-aerated bioreactor containing aerated and non-aerated zones. BIORESOURCE TECHNOLOGY 2019; 289:121754. [PMID: 31323714 DOI: 10.1016/j.biortech.2019.121754] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Revised: 06/30/2019] [Accepted: 07/01/2019] [Indexed: 06/10/2023]
Abstract
Acetonitrile (ACN) is a very volatile, toxic and nitrogen-rich organic compound. To enhance ACN wastewater treatment, a novel hybrid membrane-aerated bioreactor (MAB) containing aerated and non-aerated zones was established. A polypropylene hollow fiber membrane module (HF) and a silicone rubber membrane module (SR) were separately used as the bubble-free aeration diffuser and the biofilm carrier, and the non-aerated zones of these two types of reactors were packed with ceramsite. When the influent ACN loading was 1.200 kg/m3·d, under aeration pressures of 20 kPa in the HF-MAB and 40 kPa in the SR-MAB, ACN removal loadings of 1.116 kg/m3·d and 1.004 kg/m3·d, respectively, were achieved, and the TN (total nitrogen) removal loadings were 0.267 kg/m3·d and 0.246 kg/m3·d, respectively. In the MABs, different stratified biofilm structures of the two zones and the diffusion and counter-diffusion of oxygen synergistically promoted ACN degradation, nitrification and denitrification.
Collapse
Affiliation(s)
- Xiang Mei
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.
| | - Ying Chen
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Chenhong Fang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Lijie Xu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Junhui Li
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Shuqi Bi
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Juan Liu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Yong Wang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
| | - Pengpeng Li
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Zhongwei Guo
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Hailing Qin
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Jiawei Gu
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| | - Yanyan Xiao
- Nanjing Haiyi Environmental Protection Engineering Co., Ltd., Nanjing 211200, China
| | - Xu Yang
- Nanjing Haiyi Environmental Protection Engineering Co., Ltd., Nanjing 211200, China
| | - Baochang Zhou
- Nanjing RGE Membrane Tech Co., Ltd., Nanjing 210012, China
| | - Ze Zhang
- College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China
| |
Collapse
|
16
|
Wang H, Zhang W, Zeng S, Shen C, Jin C, Huang Y. Interactions between nanoparticles and fractal surfaces. WATER RESEARCH 2019; 151:296-309. [PMID: 30616042 DOI: 10.1016/j.watres.2018.12.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 12/13/2018] [Accepted: 12/15/2018] [Indexed: 06/09/2023]
Abstract
This study evaluated attachment of a 30-nm nanoparticle to and detachment from fractal surfaces by calculating Derjaguin-Landau-Verwey-Overbeek (DLVO) interaction energies in three-dimensional space using the surface element integration technique. The fractal surfaces were generated using the Weierstass-Mandelbrot function with varying values of fractal dimension D (2.3 ≤ D ≤ 2.7) and fractal roughness G (0.000136 ≤ G ≤ 0.136). Results show that maximum energy barrier is reduced at peak areas of a fractal surface, and hence attachment in primary minima is favored. Some nanoparticles attached in primary minima at the peak areas can be detached by decreasing ionic strength (IS) due to monotonic decrease of interaction energy with increasing separation distance at low ISs. While the attachment in primary minima at valley areas is irreversible to IS reduction, the attachment is inhibited due to enhanced maximum energy barrier at these areas. A nonmonotonic variation of attachment efficiency in primary minimum (AEPM) with IS is present at high fractal dimension (D ≥ 2.4) or low fractal roughness (G < 0.00136), whereas the AEPM decreases monotonically with decreasing IS at low fractal dimension (D < 2.4) or high fractal roughness (G ≥ 0.00136). The AEPM decreases monotonically with increasing D or decreasing G at ISs from 1 mM to 200 mM. The decrease of AEPM with D or G is much slower at 10 mM compared to other ISs. These theoretical findings can explain various experimental observations in the literature, and can have important utility to development of water filtration techniques in engineered systems and to assessment of environmental risks of nanoparticles.
Collapse
Affiliation(s)
- Hong Wang
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, China
| | - Wei Zhang
- Department of Plant, Soil and Microbial Sciences, and Environmental Science and Policy Program, Michigan State University, East Lansing, MI, 48824, United States
| | - Saiqi Zeng
- Department of Plant and Soil Sciences, University of Delaware, Newark, DE, 19716, United States
| | - Chongyang Shen
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, China.
| | - Chao Jin
- School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, Guangdong, 510006, China
| | - Yuanfang Huang
- Department of Soil and Water Sciences, China Agricultural University, Beijing, 100193, China.
| |
Collapse
|
17
|
Tuning roughness features of thin film composite polyamide membranes for simultaneously enhanced permeability, selectivity and anti-fouling performance. J Colloid Interface Sci 2019; 540:382-388. [DOI: 10.1016/j.jcis.2019.01.033] [Citation(s) in RCA: 90] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/08/2019] [Accepted: 01/10/2019] [Indexed: 01/01/2023]
|
18
|
Johnson D, Hilal N. Polymer membranes – Fractal characteristics and determination of roughness scaling exponents. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.10.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
19
|
Persico M, Dhulster P, Bazinet L. Redundancy analysis for determination of the main physicochemical characteristics of filtration membranes explaining their fouling by peptides. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.06.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
20
|
Liu W, Jia H, Wang J, Zhang H, Xin C, Zhang Y. Microbial fuel cell and membrane bioreactor coupling system: recent trends. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:23631-23644. [PMID: 29971742 DOI: 10.1007/s11356-018-2656-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 06/25/2018] [Indexed: 06/08/2023]
Abstract
Membrane bioreactor (MBR) and microbial fuel cell (MFC) are new technologies based on microbial process. MBR takes separation process as the core to achieve the high efficient separation and enrichment the beneficiation of microbes during the biological treatment. MFC is a novel technology based on electrochemical process to realize the mutual conversion between biomass energy and electric energy, in order to solve the problems of serious membrane fouling and low efficiency of denitrification in membrane bioreactor, the low power generation efficiency, and unavailability of bioelectric energy of MFC. In recent years, MFC-MBR coupling system emerged. It can effectively mitigate the membrane fouling and reduce the excess sludge production. Simultaneously, the electricity can be used effectively. The new coupling system has good prospects for development. In this paper, we summarized the research progresses of the two kinds of coupling systems in recent years and analyzed the coupling structure and forms. Based on the above, the future development fields of the MFC-MBR coupling system were prospected.
Collapse
Affiliation(s)
- Wenbin Liu
- School of Environmental and Chemical Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China
- School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Hui Jia
- School of Environmental and Chemical Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China.
- School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, 300387, China.
| | - Jie Wang
- School of Environmental and Chemical Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China.
- School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, 300387, China.
| | - Hongwei Zhang
- School of Environmental and Chemical Engineering, State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387, China
- School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Changchun Xin
- School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
| | - Yingjie Zhang
- School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin, 300387, China
| |
Collapse
|