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Phosphorus Recovery by Adsorption from the Membrane Permeate of an Anaerobic Membrane Bioreactor Digesting Waste-Activated Sludge
| Title: | Phosphorus Recovery by Adsorption from the Membrane Permeate of an Anaerobic Membrane Bioreactor Digesting Waste-Activated Sludge |
| Authors: | Hafuka, Akira Browse this author | | Kimura, Katsuki Browse this author →KAKEN DB |
| Keywords: | biogas | | methane | | sewage sludge | | phosphorus release | | zirconium | | adsorbent | | polytetrafluoroethylene | | hollow fiber microfiltration | | membrane fouling |
| Issue Date: | Jan-2022 |
| Publisher: | MDPI |
| Journal Title: | Membranes |
| Volume: | 12 |
| Issue: | 1 |
| Start Page: | 99 |
| Publisher DOI: | 10.3390/membranes12010099 |
| Abstract: | The recovery of phosphorus (P) from waste activated sludge (WAS) is a promising approach for sustainable resource management. During the anaerobic digestion of WAS, orthophosphate is released, and this P species is favorable for adsorption recovery. In the present study, an anerobic membrane bioreactor (AnMBR) with a P-adsorption column was developed to generate biogas from WAS and to recover P from membrane permeate simultaneously. The effects of the hydraulic retention time (HRT) and solid retention time (SRT) of the AnMBR on P solubilization were investigated. As a result, the maximum P solubilization was 21% when the HRT and SRT were 45 days and 100 days, respectively. Orthophosphate in the membrane permeate was adsorbed and recovered using a mesoporous material called zirconium sulfate-surfactant micelle mesostructure (ZS) in the column. The adsorbed P could be desorbed from the ZS with a NaOH solution, and P was recovered as a concentrated solution by a factor of 25. When the HRT was 19 days, the biogas yield and biogas production rate were 0.26 L/g-VSinput and 0.123 L/L/d, respectively. The average methane content in the biogas was 80%. The developed membrane-based process may be effective for resource recovery from WAS. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/85046 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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