Optimization and characterization of biosurfactant produced by indigenous Brevibacillus borstelensis isolated from a low permeability reservoir for application in MEOR

Hao Dong; Anying Zheng; Yanlong He; Xiaotong Wang; Yang Li; Yongan Gu; Ibrahim M Banat; Shanshan Sun; Yuehui She; Fan Zhang

doi:10.1039/d1ra07663a

Optimization and characterization of biosurfactant produced by indigenous Brevibacillus borstelensis isolated from a low permeability reservoir for application in MEOR

Hao Dong, Anying Zheng, Yanlong He, Xiaotong Wang, Yang Li, Yongan Gu, Ibrahim M Banat, Shanshan Sun, Yuehui She, Fan Zhang

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Abstract

Biosurfactants are expected to be a key factor for microbial enhanced oil recovery (MEOR). In this study, we described the novel biosurfactant-producing strain Brevibacillus borstelensis YZ-2 isolated from a low permeability oil reservoir. We purified and characterized the biosurfactants produced by this YZ-2 strain via thin-layer chromatography and MALDI-TOF-MS, revealing them to be fengycins. We additionally used a Box–Behnken design approach to optimize fermentation conditions in order to maximize the biosurfactants production. Core flooding experiments showed that biosurfactants produced by YZ-2 can significantly enhance crude oil recovery. Micro-model tests showed that emulsification and IFT reduction was the main EOR mechanism of the YZ biosurfactant in the oil wet model. In summary, these findings highlight the potential of Brevibacillus borstelensis YZ-2 and its metabolites for MEOR.

Original language	English
Pages (from-to)	2036-2047
Number of pages	12
Journal	RSC Advances
Volume	12
Issue number	4
Early online date	12 Jan 2022
DOIs	https://doi.org/10.1039/d1ra07663a
Publication status	Published (in print/issue) - 12 Jan 2022

Bibliographical note

Funding Information:
This investigation was nancially supported by the National Natural Science Foundation of China (51634008, 51804041), Scientic Research Program Funded by Shaanxi Provincial Education Department (Program No. 20JS119).

Publisher Copyright:
© The Royal Society of Chemistry.

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10.1039/d1ra07663a

Optimization and characterization of biosurfactants..... 2022Final published version, 2.39 MBLicence: CC BY-NC

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title = "Optimization and characterization of biosurfactant produced by indigenous Brevibacillus borstelensis isolated from a low permeability reservoir for application in MEOR",

abstract = "Biosurfactants are expected to be a key factor for microbial enhanced oil recovery (MEOR). In this study, we described the novel biosurfactant-producing strain Brevibacillus borstelensis YZ-2 isolated from a low permeability oil reservoir. We purified and characterized the biosurfactants produced by this YZ-2 strain via thin-layer chromatography and MALDI-TOF-MS, revealing them to be fengycins. We additionally used a Box–Behnken design approach to optimize fermentation conditions in order to maximize the biosurfactants production. Core flooding experiments showed that biosurfactants produced by YZ-2 can significantly enhance crude oil recovery. Micro-model tests showed that emulsification and IFT reduction was the main EOR mechanism of the YZ biosurfactant in the oil wet model. In summary, these findings highlight the potential of Brevibacillus borstelensis YZ-2 and its metabolites for MEOR.",

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AU - Dong, Hao

AU - Zheng, Anying

AU - He, Yanlong

AU - Wang, Xiaotong

AU - Li, Yang

AU - Gu, Yongan

AU - Banat, Ibrahim M

AU - Sun, Shanshan

AU - She, Yuehui

AU - Zhang, Fan

N1 - Funding Information: This investigation was nancially supported by the National Natural Science Foundation of China (51634008, 51804041), Scientic Research Program Funded by Shaanxi Provincial Education Department (Program No. 20JS119). Publisher Copyright: © The Royal Society of Chemistry.

PY - 2022/1/12

Y1 - 2022/1/12

N2 - Biosurfactants are expected to be a key factor for microbial enhanced oil recovery (MEOR). In this study, we described the novel biosurfactant-producing strain Brevibacillus borstelensis YZ-2 isolated from a low permeability oil reservoir. We purified and characterized the biosurfactants produced by this YZ-2 strain via thin-layer chromatography and MALDI-TOF-MS, revealing them to be fengycins. We additionally used a Box–Behnken design approach to optimize fermentation conditions in order to maximize the biosurfactants production. Core flooding experiments showed that biosurfactants produced by YZ-2 can significantly enhance crude oil recovery. Micro-model tests showed that emulsification and IFT reduction was the main EOR mechanism of the YZ biosurfactant in the oil wet model. In summary, these findings highlight the potential of Brevibacillus borstelensis YZ-2 and its metabolites for MEOR.

AB - Biosurfactants are expected to be a key factor for microbial enhanced oil recovery (MEOR). In this study, we described the novel biosurfactant-producing strain Brevibacillus borstelensis YZ-2 isolated from a low permeability oil reservoir. We purified and characterized the biosurfactants produced by this YZ-2 strain via thin-layer chromatography and MALDI-TOF-MS, revealing them to be fengycins. We additionally used a Box–Behnken design approach to optimize fermentation conditions in order to maximize the biosurfactants production. Core flooding experiments showed that biosurfactants produced by YZ-2 can significantly enhance crude oil recovery. Micro-model tests showed that emulsification and IFT reduction was the main EOR mechanism of the YZ biosurfactant in the oil wet model. In summary, these findings highlight the potential of Brevibacillus borstelensis YZ-2 and its metabolites for MEOR.

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Optimization and characterization of biosurfactant produced by indigenous Brevibacillus borstelensis isolated from a low permeability reservoir for application in MEOR

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