抄録
A large amount of wastewater is generated in the processing of coffee from fruit to cup. Thermophilic high-solids co-digestion of coffee processing wastewater (CPW) and waste activated sludge (WAS) has been succeeded by anaerobic membrane bioreactor (AnMBR). Chemical oxygen demand (COD) removal efficiencies of 92 ± 3% with an average methane yield of 0.28 LCH4/gCODremoved were achieved at a high solids content of 50 g/L in the AnMBR. The optimal digestion performance of 82.4% removal COD conversion to CH4 was achieved at hydraulic retention time (HRT) 10 d. Energy balance analysis revealed AnMBR has succeeded in energy positive at all the HRTs. The net energy potential (NEP) was determined to average 2.12–2.82 kJ/gCOD, amongst which the maximum NEP was achieved at HRT 15 d. These results indicated the high-solids co-digestion by AnMBR is a promising approach to maximize the bioenergy conversion from the co-substrate of CPW and WAS.
本文言語 | English |
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ページ(範囲) | 127-133 |
ページ数 | 7 |
ジャーナル | Bioresource Technology |
巻 | 274 |
DOI | |
出版ステータス | Published - 2019 2月 |
ASJC Scopus subject areas
- バイオエンジニアリング
- 環境工学
- 再生可能エネルギー、持続可能性、環境
- 廃棄物管理と処理