Sayedin F, Kermanshahi-Pour A, He SQ. Anaerobic digestion of thin stillage of corn ethanol plant in a novel anaerobic baffled reactor.
WASTE MANAGEMENT (NEW YORK, N.Y.) 2018;
78:541-552. [PMID:
32559943 DOI:
10.1016/j.wasman.2018.06.015]
[Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 05/10/2018] [Accepted: 06/07/2018] [Indexed: 06/11/2023]
Abstract
In this study, the performance of a conventional anaerobic baffled reactor (ABR) and a novel configuration of hybrid ABR for the treatment of thin stillage was evaluated. The hybrid ABR achieved the chemical oxygen demand (COD) removal, sulfate removal and methane yield of 97-94%, 94-97% and 294-310 mL CH4 g-1 CODremoved, respectively at organic loading rate (OLR) of 1-3.5 kg COD m-3 d-1. On the other hand, the value of COD and sulfate removal and methane yield for the conventional ABR were 75-94%, 67-76% and 140-240 mL CH4 g-1 CODremoved, respectively at OLR range of 1.1-1.8 kg COD m-3 d-1. The enhanced performance and robustness of the novel ABR was demonstrated to be the result of incorporation of solid/liquid/gas separators into the configuration of the conventional ABR, leading to reduced biomass washout, higher solid retention time and significantly improved phase separation.
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