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Enhancement of organic matter degradation and methane gas production of anaerobic granular sludge by degasification of dissolved hydrogen gas
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| Title: | Enhancement of organic matter degradation and methane gas production of anaerobic granular sludge by degasification of dissolved hydrogen gas |
| Authors: | Satoh, Hisashi Browse this author →KAKEN DB | | Bandara, Wasala M.K.R.T.W Browse this author | | Sasakawa, Manabu Browse this author | | Nakahara, Yoshihito Browse this author | | Takahashi, Masahiro Browse this author | | Okabe, Satoshi Browse this author →KAKEN DB |
| Keywords: | Degassing membrane | | Dissolved hydrogen gas | | Process enhancement | | pH drop | | Shock load |
| Issue Date: | 2017 |
| Publisher: | Elsevier |
| Journal Title: | Bioresource Technology |
| Volume: | 244 |
| Start Page: | 768 |
| End Page: | 775 |
| Publisher DOI: | 10.1016/j.biortech.2017.08.035 |
| Abstract: | A hollow fiber degassing membrane (DM) was applied to enhance organic matter degradation and methane gas production of anaerobic granular sludge process by reducing the dissolved hydrogen gas (D-H2) concentration in the liquid phase. DM was installed in the bench-scale anaerobic granular sludge reactors and D-H2 was removed through DM using a vacuum pump. Degasification improved the organic matter degradation efficiency to 79% while the efficiency was 62% without degasification at 12,000 mg L-1 of the influent T-COD concentration. Measurement of D-H2 concentrations in the liquid phase confirmed that D-H2 was removed by degasification. Furthermore, the effect of acetate concentrations on the organic matter degradation efficiency was investigated. At acetate concentrations above 3 g L−1, organic matter degradation deteriorated. Degasification enhanced the propionate and acetate degradation. These results suggest that degasification reduced D-H2 concentration and volatile fatty acids concentrations, prevented pH drop, and subsequent enhanced organic matter degradation. |
| Rights: | © 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ | | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/75978 |
| 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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Submitter: 佐藤 久
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