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.

Fate of β-hexachlorocyclohexane in the mixed microbial cultures (MMCs) three-stage polyhydroxyalkanoates (PHA) production process from cheese whey

VALENTINO, FRANCESCO
;
MAJONE, Mauro
2015-01-01

Abstract

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.
File in questo prodotto:
File Dimensione Formato  
Valentino_Fate-of-beta-hexachlorocyclohexane_2015.pdf

non disponibili

Dimensione 678.96 kB
Formato Adobe PDF
678.96 kB Adobe PDF   Visualizza/Apri

I documenti in ARCA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10278/3736870
Citazioni
  • ???jsp.display-item.citation.pmc??? 4
  • Scopus 34
  • ???jsp.display-item.citation.isi??? 29
social impact