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Influence of step increases in hydraulic retention time on (RS)-MCPP degradation using an anaerobic membrane bioreactor

Lookup NU author(s): Shreeshivadasan Chelliapan, Dr Paul Sallis

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Abstract

The effects of different hydraulic retention time (HRT) on (RS)-MCPP utilisation was investigated by decreasing the feed flow rate in an anaerobic membrane bioreactor (AnMBR). Results showed an average COD removal efficiency of 91.4%, 96.9% and 94.4% when the reactor was operated at HRT 3, 7 and 17 d, respectively. However, when the HRT was reduced to 1 d, the COD removal efficiency declined to just only 60%, confirming the AnMBR is stable to a large transient hydraulic shock loads. The (RS)-MCPP removal efficiency fluctuated from 6% to 39% at HRT 3 d, however when it was increased to 7 and 17 d, the removal efficiency increased to an average of 60% and 74.5%. In addition, (RS)-MCPP specific utilisation rates (SUR) were dependent on the HRT and gradually improved from 18 to 43 mu g mgVSS(-1) d(-1) as flow rate increased. (C) 2011 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Yuzir A, Chelliapan S, Sallis PJ

Publication type: Article

Publication status: Published

Journal: Bioresource Technology

Year: 2011

Volume: 102

Issue: 20

Pages: 9456-9461

Print publication date: 03/08/2011

ISSN (print): 0960-8524

ISSN (electronic): 1873-2976

Publisher: Elsevier BV

URL: http://dx.doi.org/10.1016/j.biortech.2011.07.083

DOI: 10.1016/j.biortech.2011.07.083

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