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Semi-continuous anaerobic co-digestion of sugar beet byproduct and pig manure: Effect of the organic loading rate (OLR) on process performance

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Oct 2015Publisher:Elsevier BVJournal:Bioresource Technology, volume 194, pages 283-290 (issn: 0960-8524,

Authors: Kaoutar Aboudi; Carlos José Álvarez-Gallego; Luis Isidoro Romero-García;

doi: 10.1016/j.biortech.2015.07.031

pmid: 26210141

Semi-continuous anaerobic co-digestion of sugar beet byproduct and pig manure: Effect of the organic loading rate (OLR) on process performance

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Abstract

Anaerobic co-digestion of dried pellet of exhausted sugar beet cossettes (ESBC-DP) with pig manure (PM) was investigated in a semi-continuous stirred tank reactor (SSTR) under mesophilic conditions. Seven hydraulic retention times (HRT) from 20 to 5 days were tested with the aim to evaluate the methane productivities and volatile solids (VS) removal. The corresponding organic loading rates (OLR) ranged from 4.2 to 12.8 gVS/L(reactor) d. The findings revealed that highest system efficiency was achieved at an OLR of 11.2 gVS/L(reactor) d (6 days-HRT) with a methane production rate (MPR) and volatile solids (VS) reduction of 2.91 LCH4/L(reactor) d and 57.5%, respectively. The HRT of 5 days was found critical for the studied process, which leads to volatile fatty acids (VFA) accumulation and sharp drop in pH. However, the increase of HRT permits the recovery of system.

Related Organizations

Cadi Ayyad University
Morocco
University of Cádiz
Spain

Keywords

Sus scrofa, Hydrogen-Ion Concentration, Fatty Acids, Volatile, Carbon, Manure, Bioreactors, Biofuels, Animals, Anaerobiosis, Beta vulgaris, Organic Chemicals, Volatilization, Methane, Biotechnology

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	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	95
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	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 1%