Exploitation of olive oil mill wastewater for combined biohydrogen and biopolymers production

Bioresource Technology
I NtaikouGerasimos Lyberatos

Abstract

The present study aimed to the investigation of the feasibility of the combined biohydrogen and biopolymers production from OMW (Olive oil Mill Wastewater), using a two stage system. H(2) and volatile fatty acids (VFAs) were produced via anaerobic fermentation and subsequently the acidified wastewater was used as substrate for aerobic biodegradable polymer production. Two different bioreactors, one of CSTR type and a SBR were used for the anaerobic and the aerobic process respectively. The anaerobic reactor was operated at different hydraulic retention times (HRTs) with OMW, diluted 1:4 (v/v) with tap water, as feed. The main VFAs produced were acetate, butyrate and propionate, in different ratios depending on the HRT. Valerate, isovalerate and isobutyrate were also detected in small quantities. Selective effluents of the acidogenic/hydrogen producing reactor were subsequently used as feed for the aerobic reactor. The aerobic reactor was inoculated with an enriched PHAs producing bacteria culture, and was operated in sequential cycles of nitrogen offer (growth phase) and nitrogen limitation (PHAs accumulation phase). The operational program of the SBR was determined according to the results from batch test, and its performance ...Continue Reading

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Citations

Oct 2, 2012·Indian Journal of Microbiology·Sanjay K S PatelVipin C Kalia
Jan 16, 2014·Indian Journal of Microbiology·Mamtesh SinghVipin C Kalia
Mar 28, 2013·Environmental Technology·Piyawadee SaraphiromPensri Plangklang
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Apr 16, 2015·International Journal of Molecular Sciences·Kuppam ChandrasekharDong-Woo Lee
Nov 7, 2014·Critical Reviews in Biotechnology·Alberto ScomaFabio Fava
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Oct 26, 2016·The Science of the Total Environment·Abdelilah El-AbbassiAbdellatif Hafidi
Dec 22, 2017·Critical Reviews in Biotechnology·Periyasamy SivagurunathanGopalakrishnan Kumar

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