Enhanced crude oil depletion by constructed bacterial consortium comprising bioemulsifier producer and petroleum hydrocarbon degraders.

Hydrocarbons / metabolism Petroleum / metabolism Rhodococcus / metabolism Salinity Sodium Chloride / pharmacology
Bioemulsifier Constructed bacterial consortium Crude oil depletion Rhodococcus erythropolis alkB gene

Journal

Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523

Informations de publication

Date de publication:
Jun 2019
Historique:
received: 17 12 2018
revised: 25 01 2019
accepted: 28 01 2019
pubmed: 20 3 2019
medline: 17 9 2019
entrez: 20 3 2019
Statut: ppublish

Résumé

The aim of this work was to study the production of bioemulsifier by Rhodococcus erythropolis OSDS1, and the improvement of crude oil depletion efficiency using a consortium of petroleum hydrocarbon degraders and OSDS1. The results showed that R. erythropolis OSDS1 produced highly stable bioemulsifier under various salinity (0-35 g/L NaCl) and pH (5.0-9.0) conditions; more than 90% of the initial emulsification activity was retained after 168 h. Emulsification capacity of the bioemulsifier on different petroleum hydrocarbons was diesel > mineral oil/crude oil > gasoline. A mixed bacterial consortium combining OSDS1 and four other petroleum hydrocarbon degraders was constructed. GC-MS results revealed that the constructed consortium achieved 85.26% depletion efficiency of crude oil in 15 days, which was significantly higher than that of individual strains. During the process, alkane hydroxylase gene (alkB) was successfully amplified from the consortium, confirming presence of crude oil degrading enzymes.

Identifiants

DOI: 10.1016/j.biortech.2019.01.131 PMID: 30889537
pubmed: 30889537
pii: S0960-8524(19)30164-6
doi: 10.1016/j.biortech.2019.01.131
pii:
doi:

Substances chimiques

Hydrocarbons 0
Petroleum 0
Sodium Chloride 451W47IQ8X

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

456-463

Informations de copyright

Copyright © 2019. Published by Elsevier Ltd.

Auteurs

Mingqian Xia (M)

School of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, China; Lawrence Berkeley National Laboratory, Berkeley, CA, United States; Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720-3102, United States.

Dafang Fu (D)

School of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, China. Electronic address: fdf@seu.edu.cn.

Romy Chakraborty (R)

Lawrence Berkeley National Laboratory, Berkeley, CA, United States.

Rajendra Prasad Singh (RP)

School of Civil Engineering, Southeast University, Nanjing, Jiangsu 210096, China.

Norman Terry (N)

Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720-3102, United States.

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Classifications MeSH

questionsmedicales.fr › Composés chimiques organiques › Hydrocarbures › Enhanced crude oil depletion by constructed...
questionsmedicales.fr › Environnement et santé publique › Environnement › Ressources de production d'énergie › Combustibles fossiles › Pétrole › Enhanced crude oil depletion by constructed...
questionsmedicales.fr › Bactéries › Bactéries à Gram positif › Nocardiaceae › Rhodococcus › Enhanced crude oil depletion by constructed...
questionsmedicales.fr › Phénomènes chimiques › Concentration osmolaire › Salinité › Enhanced crude oil depletion by constructed...
questionsmedicales.fr › Produits chimiques inorganiques › Composés du sodium › Chlorure de sodium › Enhanced crude oil depletion by constructed...