In situ anaerobic reductive dechlorination, using slow-release electron donors, is emerging as an effective and sustainable (low-cost and low-maintenance) technology to remediate aquifers contaminated by chloroethenes. In the present study, we investigated the use of poly-β-hydroxybutyrate (PHB), a fully biodegradable polymer, as a slow-release source of hydrogen and acetate for the reductive dechlorination of trichloroethene (TCE). Results of this study indicated that TCE dechlorination in PHB-amended microcosms was 2.3-times higher than in non-amended controls. This higher activity was explained by a higher H2 level in PHB-amended microcosms. As usual, acetate was the major sink (∼90%) of reducing equivalents available from PHB degradation, whereas no acetotrophic dechlorination was observed.

Use of Poly-β-hydroxy-butyrate as a slow-release electron donor for the microbial reductive dechlorination of TCE / Aulenta, Federico; Fuoco, M.; Canosa, A.; PETRANGELI PAPINI, Marco; Majone, Mauro. - In: WATER SCIENCE AND TECHNOLOGY. - ISSN 0273-1223. - STAMPA. - 57:6(2008), pp. 921-925. [10.2166/wst.2008.073]

Use of Poly-β-hydroxy-butyrate as a slow-release electron donor for the microbial reductive dechlorination of TCE

AULENTA, Federico;PETRANGELI PAPINI, Marco;MAJONE, Mauro
2008

Abstract

In situ anaerobic reductive dechlorination, using slow-release electron donors, is emerging as an effective and sustainable (low-cost and low-maintenance) technology to remediate aquifers contaminated by chloroethenes. In the present study, we investigated the use of poly-β-hydroxybutyrate (PHB), a fully biodegradable polymer, as a slow-release source of hydrogen and acetate for the reductive dechlorination of trichloroethene (TCE). Results of this study indicated that TCE dechlorination in PHB-amended microcosms was 2.3-times higher than in non-amended controls. This higher activity was explained by a higher H2 level in PHB-amended microcosms. As usual, acetate was the major sink (∼90%) of reducing equivalents available from PHB degradation, whereas no acetotrophic dechlorination was observed.
2008
01 Pubblicazione su rivista::01a Articolo in rivista
Use of Poly-β-hydroxy-butyrate as a slow-release electron donor for the microbial reductive dechlorination of TCE / Aulenta, Federico; Fuoco, M.; Canosa, A.; PETRANGELI PAPINI, Marco; Majone, Mauro. - In: WATER SCIENCE AND TECHNOLOGY. - ISSN 0273-1223. - STAMPA. - 57:6(2008), pp. 921-925. [10.2166/wst.2008.073]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/359055
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