Immobilization of microorganisms capable of degrading specific contaminants significantly promotes bioremediation processes. In this study, innovative and ecofriendly biosorbent-biodegrading biofilms have been developed in order to remediate oil-contaminated water. This was achieved by immobilizing hydrocarbon-degrading gammaproteobacteria and actinobacteria on biodegradable oil-adsorbing carriers, based on polylactic acid and polycaprolactone electrospun membranes. High capacities for adhesion and proliferation of bacterial cells were observed by scanning electron microscopy. The bioremediation efficiency of the systems, tested on crude oil and quantified by gas chromatography, showed that immobilization increased hydrocarbon biodegradation by up to 23 % compared with free living bacteria. The resulting biosorbent biodegrading biofilms simultaneously adsorbed 100 % of spilled oil and biodegraded more than 66 % over 10 days, with limited environmental dispersion of cells. Biofilm-mediated bioremediation, using eco-friendly supports, is a low-cost, low-impact, versatile tool for bioremediation of aquatic systems.

Catania V., Lopresti F., Cappello S., Scaffaro R., Quatrini P. (2020). Innovative, ecofriendly biosorbent-biodegrading biofilms for bioremediation of oil- contaminated water. NEW BIOTECHNOLOGY, 58, 25-31 [10.1016/j.nbt.2020.04.001].

Innovative, ecofriendly biosorbent-biodegrading biofilms for bioremediation of oil- contaminated water

Catania V.;Lopresti F.;Scaffaro R.;Quatrini P.
2020-01-01

Abstract

Immobilization of microorganisms capable of degrading specific contaminants significantly promotes bioremediation processes. In this study, innovative and ecofriendly biosorbent-biodegrading biofilms have been developed in order to remediate oil-contaminated water. This was achieved by immobilizing hydrocarbon-degrading gammaproteobacteria and actinobacteria on biodegradable oil-adsorbing carriers, based on polylactic acid and polycaprolactone electrospun membranes. High capacities for adhesion and proliferation of bacterial cells were observed by scanning electron microscopy. The bioremediation efficiency of the systems, tested on crude oil and quantified by gas chromatography, showed that immobilization increased hydrocarbon biodegradation by up to 23 % compared with free living bacteria. The resulting biosorbent biodegrading biofilms simultaneously adsorbed 100 % of spilled oil and biodegraded more than 66 % over 10 days, with limited environmental dispersion of cells. Biofilm-mediated bioremediation, using eco-friendly supports, is a low-cost, low-impact, versatile tool for bioremediation of aquatic systems.
Settore ING-IND/34 - Bioingegneria Industriale
Settore BIO/19 - Microbiologia Generale
Catania V., Lopresti F., Cappello S., Scaffaro R., Quatrini P. (2020). Innovative, ecofriendly biosorbent-biodegrading biofilms for bioremediation of oil- contaminated water. NEW BIOTECHNOLOGY, 58, 25-31 [10.1016/j.nbt.2020.04.001].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/425925
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