A green biocide enhancer for the treatment of sulfate-reducing bacteria (SRB) biofilms on carbon steel surfaces using glutaraldehyde |
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| Authors: | Jie Wen Kaili Zhao Tingyue Gu Issam I Raad |
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| Institution: | 1. Department of Chemical and Biomolecular Engineering, Ohio University, Athens, OH 45701, USA;2. Department of Infectious Diseases, Infection Control, and Employee Health, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77230, USA;1. Key Laboratory of Water and Sediment Sciences of Ministry of Education, State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China;2. Civil Engineering Department, North China Institute of Aerospace Engineering, No. 133, Aimin East Road, Langfang 065000, China;1. Environmental and Conservation Sciences Program, North Dakota State University, Fargo, ND 58108, USA;2. International Postgraduate Programs in Environmental Management, Graduate School Chulalongkorn University, Bangkok 10330, Thailand;3. Department of Environmental Engineering, Khon Kaen University, Khon Kaen 40002, Thailand;4. Center for Photochemical Sciences and Department of Chemistry, Bowling Green State University, Bowling Green, OH, 43403, USA;5. Department of Civil and Environmental Engineering and Construction, University of Nevada, Las Vegas, NV 89154, USA;1. Department of Chemical and Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University, Athens, OH 45701, USA;2. College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, 100 Ping Le Yuan, Chaoyang District, Beijing 100124, China;3. Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China;1. Department of Chemical and Biomolecular Engineering, Institute for Corrosion and Multiphase Technology, Ohio University, Athens, OH 45701, USA;2. Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, 117576, Singapore;3. School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China |
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| Abstract: | Generally speaking, a much higher concentration of biocide is needed to treat biofilms compared to the dosage used to for planktonic bacteria. With increasing restrictions of environmental regulations and safety concerns on large-scale biocide uses such as oil field applications, it is highly desirable to make more effective use of biocides. In this paper a green biocide enhancer ethylenediaminedisuccinate (EDDS) that is a biodegradable chelator, was found to enhance the efficacy of glutaraldehyde in its treatment of sulfate-reducing bacteria (SRB) biofilms. Experiments were carried out in 100 ml anaerobic vials with carbon steel coupons. The ATCC 14563 strain of Desulfovibrio desulfuricans was used. Biofilms on coupon surfaces were visualized using scanning electron microscopy (SEM). Experimental results showed that EDDS reduced the glutaraldehyde dosages considerably in the inhibition of SRB biofilm establishment and the treatment of established biofilms on carbon steel coupon surfaces. |
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