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      Bioremediation of Petroleum Hydrocarbons Using Acinetobacter sp. SCYY-5 Isolated from Contaminated Oil Sludge: Strategy and Effectiveness Study

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          Abstract

          Biodegradation has been considered as an ideal technique for total petroleum hydrocarbon (TPH) contamination, but its efficiency is limited by its application in the field. Herein, an original TPH-degrading strain, SCYY-5, was isolated from contaminated oil sludge and identified as Acinetobacter sp. by 16S rDNA sequence analysis. The biological function of the isolate was investigated by heavy metal tolerance, carbon, and nitrogen source and degradation tests. To enhance its biodegradation efficiency, the response surface methodology (RSM) based on a function model was adopted to investigate and optimize the strategy of microbial and environmental variables for TPH removal. Furthermore, the performance of the system increased to 79.94% with the further addition of extra nutrients, suggesting that the RSM and added nutrients increased the activity of bacteria to meet the needs of the co-metabolism matrix during growth or degradation. These results verified that it is feasible to adopt the optimal strategy of combining bioremediation with RSM to improve the biodegradation efficiency, for contaminated oil sludge.

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          Response surface methodology (RSM) as a tool for optimization in analytical chemistry.

          Marcos Almeida Bezerra, Ricardo Santelli, Eliane Oliveira … (2008)
          A review about the application of response surface methodology (RSM) in the optimization of analytical methods is presented. The theoretical principles of RSM and steps for its application are described to introduce readers to this multivariate statistical technique. Symmetrical experimental designs (three-level factorial, Box-Behnken, central composite, and Doehlert designs) are compared in terms of characteristics and efficiency. Furthermore, recent references of their uses in analytical chemistry are presented. Multiple response optimization applying desirability functions in RSM and the use of artificial neural networks for modeling are also discussed.
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            Rhizoremediation: a beneficial plant-microbe interaction.

            Ellen L. Lagendijk, Guido V Bloemberg, Marlies J. Lugtenberg … (2003)
            Worldwide, contamination of soil and ground water is a severe problem. The negative effects of pollutants on the environment and on human health are diverse and depend on the nature of the pollution. The search for alternative methods for excavation and incineration to clean polluted sites resulted in the application of bioremediation techniques. In this review, we describe some generally accepted bioremediation tools and subsequently focus on the combination of two approaches, phytoremediation and bioaugmentation, resulting in rhizoremediation. During rhizoremediation, exudates derived from the plant can help to stimulate the survival and action of bacteria, which subsequently results in a more efficient degradation of pollutants. The root system of plants can help to spread bacteria through soil and help to penetrate otherwise impermeable soil layers. The inoculation of pollutant-degrading bacteria on plant seed can be an important additive to improve the efficiency of phytoremediation or bioaugmentation.
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              Crude petroleum-oil biodegradation efficiency of Bacillus subtilis and Pseudomonas aeruginosa strains isolated from a petroleum-oil contaminated soil from North-East India.

              Pranab Mukherjee, Jugal Kishore Das (2007)
              The efficiency of Bacillus subtilis DM-04 and Pseudomonas aeruginosa M and NM strains isolated from a petroleum contaminated soil sample from North-East India was compared for the biodegradation of crude petroleum-oil hydrocarbons in soil and shake flask study. These bacterial strains could utilize crude petroleum-oil hydrocarbons as sole source of carbon and energy. Bioaugmentation of TPH contaminated microcosm with P. aeruginosa M and NM consortia and B. subtilis strain showed a significant reduction of TPH levels in treated soil as compared to control soil at the end of experiment (120 d). P. aeruginosa strains were more efficient than B. subtilis strain in reducing the TPH content from the medium. The plate count technique indicated expressive growth and biosurfactant production by exogenously seeded bacteria in crude petroleum-oil rich soil. The results showed that B. subtilis DM-04 and P. aeruginosa M and NM strains could be effective for in situ bioremediation.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Int J Environ Res Public Health
                Journal ID (iso-abbrev): Int J Environ Res Public Health
                Journal ID (publisher-id): ijerph
                Title: International Journal of Environmental Research and Public Health
                Publisher: MDPI
                ISSN (Print): 1661-7827
                ISSN (Electronic): 1660-4601
                Publication date (Electronic): 19 January 2021
                Publication date (Print): January 2021
                Volume: 18
                Issue: 2
                Electronic Location Identifier: 819
                Affiliations
                [1 ]School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai 201620, China; m040118137@ 123456sues.edu.cn (Y.C.); raopinhua@ 123456sues.edu.cn (P.R.); liliyan@ 123456sues.edu.cn (L.Y.); 15868218094@ 123456126.com (L.H.); M040119306@ 123456sues.edu.cn (X.Z.)
                [2 ]College of Civil Engineering, Kashgar University, Kashgar 844006, China
                [3 ]State Key Laboratory of Petroleum Pollution Control, Beijing 102206, China
                [4 ]Anji Guoqian Environmental Technology Co., Ltd., Huzhou 313000, China
                [5 ]Department of Environmental Engineering, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam 57922, Korea; ssp@ 123456scnu.ac.kr
                [6 ]Division of Biotechnology, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 570-752, Korea; Ryumh@ 123456jbnu.ac.kr
                Author notes
                [* ]Correspondence: wangrunkai@ 123456sues.edu.cn (R.W.); wu-baichun@ 123456cnpc.com.cn (B.W.); Tel.: +86-021-67791217 (R.W.); +86-010-80169539 (B.W.)
                Author information
                https://orcid.org/0000-0001-5000-7639
                Article
                Publisher ID: ijerph-18-00819
                DOI: 10.3390/ijerph18020819
                PMC ID: 7835959
                PubMed ID: 33477988
                SO-VID: 06866600-20a4-4ba3-b616-99b544644a0f
                Copyright © © 2021 by the authors.
                License:

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                Date received : 30 November 2020
                Date accepted : 13 January 2021
                Categories
                Subject: Article

                ScienceOpen disciplines: Public health
                Keywords: biodegradation,bioremediation,tph,acinetobacter sp.,16s rdna,response surface methodology (rsm)
                Data availability:
                ScienceOpen disciplines: Public health
                Keywords: biodegradation, bioremediation, tph, acinetobacter sp., 16s rdna, response surface methodology (rsm)

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