Osmosis membrane bioreactor–microfiltration with magnesium-based draw solute for salinity reduction and phosphorus recovery
Osmosis membrane bioreactors (OMBRs), which integrate forward osmosis (FO) and a biological process, followed by reverse osmosis or membrane distillation (MD) have been receiving increasing attention for wastewater treatment and reuse. However, OMBR application in wastewater treatment is still hinde...
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2023
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| Truy cập trực tuyến: | https://scholar.dlu.edu.vn/handle/123456789/3007 https://www.sciencedirect.com/science/article/pii/S096483051730464X |
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oai:scholar.dlu.edu.vn:123456789-30072023-09-28T05:59:30Z Osmosis membrane bioreactor–microfiltration with magnesium-based draw solute for salinity reduction and phosphorus recovery Hau-Ming Chang Shiao-Shing Chen Nguyen Cong Nguyen Wen-Shing Chang Saikat Sinha Ray Osmotic membrane bioreactor, Salt reversal, Phosphorus recovery, Salinity mitigation, Struvite Osmosis membrane bioreactors (OMBRs), which integrate forward osmosis (FO) and a biological process, followed by reverse osmosis or membrane distillation (MD) have been receiving increasing attention for wastewater treatment and reuse. However, OMBR application in wastewater treatment is still hindered by the accumulation of inorganic and organic salts, which affects microbial activity in the OMBR. Therefore, in this study, a novel hybrid OMBR–MD system integrated with periodic microfiltration (MF) extraction was developed for simultaneous salinity reduction and phosphorus recovery using a magnesium-based draw solute by taking advantage of magnesium salt reversal. In the OMBR system, MgCl2 was used as the draw solution to withdraw clean water passing through the FO membrane, whereby all contaminants and mineral salts, including phosphate, ammonia and magnesium reversed from the draw solution, were retained in the bioreactor. The MF membrane was used to bleed the water out of the bioreactor for salinity reduction and subsequent phosphorus recovery. The pH of the effluent from the MF containing high phosphorus was adjusted to 10 to precipitate struvite, and the amount of the produced struvite was quantitatively determined to be 41 mg per liter of the MF permeate. The MD process was used to recover the diluted MgCl2 draw solution with an initial flux of 8.2 L/m2 h under a temperature difference of 30 °C (55 °C in the feed and 20 °C in the distillate). Subsequently, the flux slightly decreased to 6.3 L/m2 h after 6 h because of the decreasing vapor pressure in the salt solution based on Raoult's law. 2023-09-28T05:59:25Z 2023-09-28T05:59:25Z 2017-10 Journal article Bài báo đăng trên tạp chí thuộc ISI, bao gồm book chapter 0964-8305 https://scholar.dlu.edu.vn/handle/123456789/3007 10.1016/j.ibiod.2017.05.022 https://www.sciencedirect.com/science/article/pii/S096483051730464X en International Biodeterioration & Biodegradation |
| institution |
Thư viện Trường Đại học Đà Lạt |
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| language |
English |
| topic |
Osmotic membrane bioreactor, Salt reversal, Phosphorus recovery, Salinity mitigation, Struvite |
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Osmotic membrane bioreactor, Salt reversal, Phosphorus recovery, Salinity mitigation, Struvite Hau-Ming Chang Shiao-Shing Chen Nguyen Cong Nguyen Wen-Shing Chang Saikat Sinha Ray Osmosis membrane bioreactor–microfiltration with magnesium-based draw solute for salinity reduction and phosphorus recovery |
| description |
Osmosis membrane bioreactors (OMBRs), which integrate forward osmosis (FO) and a biological process, followed by reverse osmosis or membrane distillation (MD) have been receiving increasing attention for wastewater treatment and reuse. However, OMBR application in wastewater treatment is still hindered by the accumulation of inorganic and organic salts, which affects microbial activity in the OMBR. Therefore, in this study, a novel hybrid OMBR–MD system integrated with periodic microfiltration (MF) extraction was developed for simultaneous salinity reduction and phosphorus recovery using a magnesium-based draw solute by taking advantage of magnesium salt reversal. In the OMBR system, MgCl2 was used as the draw solution to withdraw clean water passing through the FO membrane, whereby all contaminants and mineral salts, including phosphate, ammonia and magnesium reversed from the draw solution, were retained in the bioreactor. The MF membrane was used to bleed the water out of the bioreactor for salinity reduction and subsequent phosphorus recovery. The pH of the effluent from the MF containing high phosphorus was adjusted to 10 to precipitate struvite, and the amount of the produced struvite was quantitatively determined to be 41 mg per liter of the MF permeate. The MD process was used to recover the diluted MgCl2 draw solution with an initial flux of 8.2 L/m2 h under a temperature difference of 30 °C (55 °C in the feed and 20 °C in the distillate). Subsequently, the flux slightly decreased to 6.3 L/m2 h after 6 h because of the decreasing vapor pressure in the salt solution based on Raoult's law. |
| format |
Journal article |
| author |
Hau-Ming Chang Shiao-Shing Chen Nguyen Cong Nguyen Wen-Shing Chang Saikat Sinha Ray |
| author_facet |
Hau-Ming Chang Shiao-Shing Chen Nguyen Cong Nguyen Wen-Shing Chang Saikat Sinha Ray |
| author_sort |
Hau-Ming Chang |
| title |
Osmosis membrane bioreactor–microfiltration with magnesium-based draw solute for salinity reduction and phosphorus recovery |
| title_short |
Osmosis membrane bioreactor–microfiltration with magnesium-based draw solute for salinity reduction and phosphorus recovery |
| title_full |
Osmosis membrane bioreactor–microfiltration with magnesium-based draw solute for salinity reduction and phosphorus recovery |
| title_fullStr |
Osmosis membrane bioreactor–microfiltration with magnesium-based draw solute for salinity reduction and phosphorus recovery |
| title_full_unstemmed |
Osmosis membrane bioreactor–microfiltration with magnesium-based draw solute for salinity reduction and phosphorus recovery |
| title_sort |
osmosis membrane bioreactor–microfiltration with magnesium-based draw solute for salinity reduction and phosphorus recovery |
| publishDate |
2023 |
| url |
https://scholar.dlu.edu.vn/handle/123456789/3007 https://www.sciencedirect.com/science/article/pii/S096483051730464X |
| _version_ |
1778792474980909056 |