Journal
BIORESOURCE TECHNOLOGY
Volume 192, Issue -, Pages 304-311Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2015.05.083
Keywords
Hexachlorocyclohexane; Polyhydroxyalkanoates; Cheese whey; Mixed microbial cultures; Decontamination efficiency
Funding
- European Community [FP7-265669-EcoBioCAP]
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This work aimed to study the fate and effect of beta-hexachlorocyclohexane (beta-HCH) during several steps of PHA production and purification, by using an artificially contaminated cheese whey (CW) as the feedstock. Most of beta-HCH (around 90%) was adsorbed on CW solids and it was removed after the acidogenic fermentation step, when residual CW solids are separated along with anaerobic biomass from the liquid-phase. Purification steps also contributed strongly to the removal of residual beta-HCH; overall, the PHA production process removed about 99.9% of initial beta-HCH content. Moreover, it has been shown that beta-HCH has neither detrimental effect on acidogenic fermentation nor on PHA accumulation, that were performed by using unacclimated mixed microbial cultures. (C) 2015 Elsevier Ltd. All rights reserved.
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