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- Publisher Website: 10.1021/acs.est.2c04704
- Scopus: eid_2-s2.0-85141020798
- PMID: 36287592
- WOS: WOS:000878263600001
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Article: Recovery of Fluoride-Rich and Silica-Rich Wastewaters as Valuable Resources: A Resource Capture Ultrafiltration-Bipolar Membrane Electrodialysis-Based Closed-Loop Process
Title | Recovery of Fluoride-Rich and Silica-Rich Wastewaters as Valuable Resources: A Resource Capture Ultrafiltration-Bipolar Membrane Electrodialysis-Based Closed-Loop Process |
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Authors | |
Keywords | bipolar membrane electrodialysis closed-loop process fluoride-rich wastewater ion resource recovery ultrafiltration |
Issue Date | 2022 |
Citation | Environmental Science and Technology, 2022, v. 56, n. 22, p. 16221-16229 How to Cite? |
Abstract | Traditional technologies such as precipitation and coagulation have been adopted for fluoride-rich and silica-rich wastewater treatment, respectively, but waste solid generation and low wastewater processing efficiency are still the looming concern. Efficient resource recovery technologies for different wastewater treatments are scarce for environment and industry sustainability. Herein, a resource capture ultrafiltration-bipolar membrane electrodialysis (RCUF-BMED) system was designed into a closed-loop process for simultaneous capture and recovery of fluoride and silica as sodium silicofluoride (Na2SiF6) from mixed fluoride-rich and silica-rich wastewaters, as well as achieving zero liquid discharge. This RCUF-BMED system comprised two key parts: (1) capture of fluoride and silica from two wastewaters using acid, and recovery of the Na2SiF6using base by UF and (2) UF permeate conversion for acid/base and freshwater generation by BMED. With the optimized RCUF-BMED system, fluoride and silica can be selectively captured from wastewater with removal efficiencies higher than 99%. The Na2SiF6recovery was around 72% with a high purity of 99.1%. The aging and cyclic experiments demonstrated the high stability and recyclability of the RCUF-BMED system. This RCUF-BMED system has successfully achieved the conversion of toxic fluoride and silica into valuable Na2SiF6from mixed wastewaters, which shows great application potential in the industry-resource-environment nexus. |
Persistent Identifier | http://hdl.handle.net/10722/328002 |
ISSN | 2023 Impact Factor: 10.8 2023 SCImago Journal Rankings: 3.516 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Qiu, Yangbo | - |
dc.contributor.author | Ren, Long Fei | - |
dc.contributor.author | Xia, Lei | - |
dc.contributor.author | Zhong, Changmei | - |
dc.contributor.author | Shao, Jiahui | - |
dc.contributor.author | Zhao, Yan | - |
dc.contributor.author | Van Der Bruggen, Bart | - |
dc.date.accessioned | 2023-06-05T06:53:14Z | - |
dc.date.available | 2023-06-05T06:53:14Z | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | Environmental Science and Technology, 2022, v. 56, n. 22, p. 16221-16229 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | http://hdl.handle.net/10722/328002 | - |
dc.description.abstract | Traditional technologies such as precipitation and coagulation have been adopted for fluoride-rich and silica-rich wastewater treatment, respectively, but waste solid generation and low wastewater processing efficiency are still the looming concern. Efficient resource recovery technologies for different wastewater treatments are scarce for environment and industry sustainability. Herein, a resource capture ultrafiltration-bipolar membrane electrodialysis (RCUF-BMED) system was designed into a closed-loop process for simultaneous capture and recovery of fluoride and silica as sodium silicofluoride (Na2SiF6) from mixed fluoride-rich and silica-rich wastewaters, as well as achieving zero liquid discharge. This RCUF-BMED system comprised two key parts: (1) capture of fluoride and silica from two wastewaters using acid, and recovery of the Na2SiF6using base by UF and (2) UF permeate conversion for acid/base and freshwater generation by BMED. With the optimized RCUF-BMED system, fluoride and silica can be selectively captured from wastewater with removal efficiencies higher than 99%. The Na2SiF6recovery was around 72% with a high purity of 99.1%. The aging and cyclic experiments demonstrated the high stability and recyclability of the RCUF-BMED system. This RCUF-BMED system has successfully achieved the conversion of toxic fluoride and silica into valuable Na2SiF6from mixed wastewaters, which shows great application potential in the industry-resource-environment nexus. | - |
dc.language | eng | - |
dc.relation.ispartof | Environmental Science and Technology | - |
dc.subject | bipolar membrane electrodialysis | - |
dc.subject | closed-loop process | - |
dc.subject | fluoride-rich wastewater | - |
dc.subject | ion resource recovery | - |
dc.subject | ultrafiltration | - |
dc.title | Recovery of Fluoride-Rich and Silica-Rich Wastewaters as Valuable Resources: A Resource Capture Ultrafiltration-Bipolar Membrane Electrodialysis-Based Closed-Loop Process | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1021/acs.est.2c04704 | - |
dc.identifier.pmid | 36287592 | - |
dc.identifier.scopus | eid_2-s2.0-85141020798 | - |
dc.identifier.volume | 56 | - |
dc.identifier.issue | 22 | - |
dc.identifier.spage | 16221 | - |
dc.identifier.epage | 16229 | - |
dc.identifier.eissn | 1520-5851 | - |
dc.identifier.isi | WOS:000878263600001 | - |