6533b85cfe1ef96bd12bc09a
RESEARCH PRODUCT
Innovative, ecofriendly biosorbent-biodegrading biofilms for bioremediation of oil- contaminated water.
Paola QuatriniSimone CappelloScaffaro RobertoValentina CataniaFrancesco Loprestisubject
0106 biological sciencesChromatography GasMicroorganismBioengineeringOil-adsorbing electrospun membranesSettore BIO/19 - Microbiologia Generale01 natural sciencesActinobacteria03 medical and health scienceschemistry.chemical_compoundAdsorptionBioremediation010608 biotechnologyHydrocarbonoclastic bacteria (HCB)Petroleum PollutionMolecular BiologyEnvironmental Restoration and Remediation030304 developmental biology0303 health sciencesbiologyWater PollutionBiofilmSettore ING-IND/34 - Bioingegneria IndustrialeGeneral MedicineBiodegradationContaminationbiology.organism_classificationActinobacteriaBiodegradation EnvironmentalPetroleumchemistryEnvironmental chemistryBiofilmsPolycaprolactoneBiodegrading biofilmsAdsorptionBioremediationGammaproteobacteriaBiotechnologydescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-05-22 | New biotechnology |