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

Ali Yuzir; Shreeshivadasan Chelliapan; Paul J Sallis

doi:10.1016/j.biortech.2011.07.083

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

Bioresour Technol. 2011 Oct;102(20):9456-61. doi: 10.1016/j.biortech.2011.07.083. Epub 2011 Aug 3.

Authors

Ali Yuzir¹, Shreeshivadasan Chelliapan, Paul J Sallis

Affiliation

¹ Department of Environmental Engineering, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Malaysia. aliyuzir@utm.my

PMID: 21862323
DOI: 10.1016/j.biortech.2011.07.083

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 1d, 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 μg mg VSS(-1) d(-1) as flow rate increased.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Anaerobiosis
Bioreactors*
Chromatography, High Pressure Liquid
Membranes, Artificial*
Methane / biosynthesis

Substances

Membranes, Artificial
Methane