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Anaerobic Co‐Digestion of Microalgae Scenedesmus sp. and TWAS for Biomethane Production
The paper investigated the feasibility of biomethane (bio‐CH4) production from the anaerobic co‐digestion of the microalgae Scenedesmus quadricauda (S. quadricauda) and thickened waste activated sludge (TWAS). The concept was tested in bench‐scale anaerobic digesters by varying the proportions of volatile solids (VS) loading from S. quadricauda and TWAS and two critical operational parameters, temperature and alkalinity. The CH4 production for the various S. quadricauda and TWAS proportions ranged from 234 to 318 mL/g of chemical oxygen demand (COD) digested and 329 to 530 mL/g of VS digested at 35 °C. The reductions in total solids (TS), COD, and VS ranged from 25 to 44%, 46 to 53%, and 40 to 53%, respectively. Temperature had a significant effect on CH4 production, lower temperatures greatly reduced CH4 production. No significant difference in CH4 production was observed for experiments conducted at alkalinity levels of 70, 1630, and 3200 mg/L as CaCO3.
Anaerobic Co‐Digestion of Microalgae Scenedesmus sp. and TWAS for Biomethane Production
The paper investigated the feasibility of biomethane (bio‐CH4) production from the anaerobic co‐digestion of the microalgae Scenedesmus quadricauda (S. quadricauda) and thickened waste activated sludge (TWAS). The concept was tested in bench‐scale anaerobic digesters by varying the proportions of volatile solids (VS) loading from S. quadricauda and TWAS and two critical operational parameters, temperature and alkalinity. The CH4 production for the various S. quadricauda and TWAS proportions ranged from 234 to 318 mL/g of chemical oxygen demand (COD) digested and 329 to 530 mL/g of VS digested at 35 °C. The reductions in total solids (TS), COD, and VS ranged from 25 to 44%, 46 to 53%, and 40 to 53%, respectively. Temperature had a significant effect on CH4 production, lower temperatures greatly reduced CH4 production. No significant difference in CH4 production was observed for experiments conducted at alkalinity levels of 70, 1630, and 3200 mg/L as CaCO3.
Anaerobic Co‐Digestion of Microalgae Scenedesmus sp. and TWAS for Biomethane Production
Garoma, Temesgen (Autor:in) / Nguyen, Don (Autor:in)
Water Environment Research ; 88 ; 13-20
01.01.2016
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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