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Lin H, Zhang M. Advanced Membrane Technologies for Wastewater Treatment and Recycling. MEMBRANES 2023; 13:558. [PMID: 37367762 DOI: 10.3390/membranes13060558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 05/23/2023] [Indexed: 06/28/2023]
Abstract
In the face of the ever-growing severe problem of water scarcity, wastewater reuse, recycling and resource recovery are increasingly recognized as crucial part of the solution [...].
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Affiliation(s)
- Hongjun Lin
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
| | - Meijia Zhang
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua 321004, China
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Li WP, Paing AT, Chow CA, Qua MS, Mottaiyan K, Lu K, Dhalla A, Chung TS, Gudipati C. Scale Up and Validation of Novel Tri-Bore PVDF Hollow Fiber Membranes for Membrane Distillation Application in Desalination and Industrial Wastewater Recycling. MEMBRANES 2022; 12:573. [PMID: 35736279 PMCID: PMC9229717 DOI: 10.3390/membranes12060573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 05/25/2022] [Accepted: 05/27/2022] [Indexed: 02/01/2023]
Abstract
Novel tri-bore polyvinylidene difluoride (PVDF) hollow fiber membranes (TBHF) were scaled-up for fabrication on industrial-scale hollow fiber spinning equipment, with the objective of validating the membrane technology for membrane distillation (MD) applications in areas such as desalination, resource recovery, and zero liquid discharge. The membrane chemistry and spinning processes were adapted from a previously reported method and optimized to suit large-scale production processes with the objective of translating the technology from lab scale to pilot scale and eventual commercialization. The membrane process was successfully optimized in small 1.5 kg batches and scaled-up to 20 kg and 50 kg batch sizes with good reproducibility of membrane properties. The membranes were then assembled into 0.5-inch and 2-inch modules of different lengths and evaluated in direct contact membrane distillation (DCMD) mode, as well as vacuum membrane distillation (VMD) mode. The 0.5-inch modules had a permeate flux >10 L m−2 h−1, whereas the 2-inch module flux dropped significantly to <2 L m−2 h−1 according to testing with 3.5 wt.% NaCl feed. Several optimization trials were carried out to improve the DCMD and VMD flux to >5 L m−2 h−1, whereas the salt rejection consistently remained ≥99.9%.
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Affiliation(s)
- Weikun Paul Li
- Separation Technologies Applied Research and Translation Center (START), Nanyang Technological University—NTUitive Pte Ltd., Nanyang Technological University, Singapore 637141, Singapore; (W.P.L.); (A.T.P.); (C.A.C.); (M.S.Q.); (K.M.); (A.D.)
| | - Aung Thet Paing
- Separation Technologies Applied Research and Translation Center (START), Nanyang Technological University—NTUitive Pte Ltd., Nanyang Technological University, Singapore 637141, Singapore; (W.P.L.); (A.T.P.); (C.A.C.); (M.S.Q.); (K.M.); (A.D.)
| | - Chin Ann Chow
- Separation Technologies Applied Research and Translation Center (START), Nanyang Technological University—NTUitive Pte Ltd., Nanyang Technological University, Singapore 637141, Singapore; (W.P.L.); (A.T.P.); (C.A.C.); (M.S.Q.); (K.M.); (A.D.)
| | - Marn Soon Qua
- Separation Technologies Applied Research and Translation Center (START), Nanyang Technological University—NTUitive Pte Ltd., Nanyang Technological University, Singapore 637141, Singapore; (W.P.L.); (A.T.P.); (C.A.C.); (M.S.Q.); (K.M.); (A.D.)
| | - Karikalan Mottaiyan
- Separation Technologies Applied Research and Translation Center (START), Nanyang Technological University—NTUitive Pte Ltd., Nanyang Technological University, Singapore 637141, Singapore; (W.P.L.); (A.T.P.); (C.A.C.); (M.S.Q.); (K.M.); (A.D.)
| | - Kangjia Lu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore;
| | - Adil Dhalla
- Separation Technologies Applied Research and Translation Center (START), Nanyang Technological University—NTUitive Pte Ltd., Nanyang Technological University, Singapore 637141, Singapore; (W.P.L.); (A.T.P.); (C.A.C.); (M.S.Q.); (K.M.); (A.D.)
| | - Tai-Shung Chung
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117585, Singapore;
- Graduate Institute of Applied Science and Technology, National Taiwan University of Science and Technology, Taipei 10607, Taiwan
| | - Chakravarthy Gudipati
- Separation Technologies Applied Research and Translation Center (START), Nanyang Technological University—NTUitive Pte Ltd., Nanyang Technological University, Singapore 637141, Singapore; (W.P.L.); (A.T.P.); (C.A.C.); (M.S.Q.); (K.M.); (A.D.)
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