Anaerobic treatment of phenol in a two-stage anaerobic reactor

Book chapter


Hernandez, J.E. and Edyvean, R.G.J. 2004. Anaerobic treatment of phenol in a two-stage anaerobic reactor. in: Brebbia, C.A., Kungolos, S., Popov, V. and Itoh, H. (ed.) Waste Management and the Environment II WIT Press. pp. 203-211
AuthorsHernandez, J.E. and Edyvean, R.G.J.
EditorsBrebbia, C.A., Kungolos, S., Popov, V. and Itoh, H.
Abstract

The inhibitory effects of phenol are problematic for the anaerobic treatment of wastewater. The purpose of this study is to demonstrate that a two-stage anaerobic digester (TSAD) can degrade phenol, reducing its toxic effects in the first acidogenic reactor (R1) before going into a methanogenic reactor (R2). The system consisted of two reactors in semi continuous operation. R1 was a Continuous Stirred Tank Reactor at pH 5.5± 0.5; R2 was a packet reactor at pH 8.4± 0.05. Both were operated at a hydraulic retention time (HRT) of 10 days and 35 0 C and fed with a nutritional supplement at organic loading rate (OLR) of 1.8 grams of COD per litre of reactor per day (LR -1 Day -1 ) until steady state conditions. Then one gram of phenol was fed daily over a period of 15 days. The performance of the system was monitored and analysed in terms of degradation of phenol and dissolved chemical oxygen demand (DCOD); concentration of organic acids (OA) and suspended organic carbon (SOC); biogas production and pH evolution. The removal of phenol and DCOD peaked at 99.7% and 70% respectively. The biogas production in the methanogenic reactor reached 0.8195 Lbiogas LR -1 Day -1 . These experiments demonstrate that, given the right conditions, a TSAD can degrade phenol without considerable inhibition.

KeywordsTwo-stage anaerobic digestion; Phenol degradation; Mesophilic; Acidogenesis; Methanogenesis; Cofermentation; Inhibition
Page range203-211
Year2004
Book titleWaste Management and the Environment II
PublisherWIT Press
Output statusPublished
ISBN9781853127380
Publication dates
Print2004
Publication process dates
Deposited01 Feb 2024
Official URLhttps://www.witpress.com/elibrary/wit-transactions-on-ecology-and-the-environment/78/14373
Publisher's version
File Access Level
Open
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