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A cross-comparison of biosurfactants as marine oil spill dispersants: Governing factors, synergetic effects and fates.
Cai, Qinhong; Zhu, Zhiwen; Chen, Bing; Lee, Kenneth; Nedwed, Timothy J; Greer, Charles; Zhang, Baiyu.
Afiliación
  • Cai Q; The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, NL, Canada; Department of Natural Resource Sciences, McGill University, Macdonald-Stewart Building, McGill, 21111 Lakeshore Road,
  • Zhu Z; The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, NL, Canada.
  • Chen B; The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, NL, Canada.
  • Lee K; Ecosystem Science, Fisheries and Oceans Canada, Ottawa, ON, Canada.
  • Nedwed TJ; Exxon Upstream Research Company, 22777 Springwood Village Parkway, Spring, TX, USA.
  • Greer C; Department of Natural Resource Sciences, McGill University, Macdonald-Stewart Building, McGill, 21111 Lakeshore Road, Sainte-Anne-de-Bellevue, QC, Canada; Biotechnology Research Institute, National Research Council, Montreal, QC, Canada.
  • Zhang B; The Northern Region Persistent Organic Pollution Control (NRPOP) Laboratory, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's, NL, Canada. Electronic address: bzhang@mun.ca.
J Hazard Mater ; 416: 126122, 2021 08 15.
Article en En | MEDLINE | ID: mdl-34492916
Biosurfactant-based dispersants (BBDs) may be more effective, cost-efficient and environmentally friendly than dispersants currently used for oil spill response. An improved understanding of BBD performance is needed to advance their development and commercial use. In this study, the ability of four BBDs, i.e. sufactins, trehalose lipids, rhamnolipids and exmulsins, alone and as various combinations to disperse Arabian light crude oil and weathered Alaska North Slope crude oil was compared to a widely used commercial oil dispersant (Corexit 9500A). Surfactin and trehalose lipids, which have balanced surface activity/emulsification ability, showed dispersion efficacy comparable to Corexit 9500A. Rhamnolipids (primarily a surface-active agent) and exmulsins (primarily an emulsifier) when used alone had significantly lower efficacy. However, blends of these surfactants had excellent dispersion performance because of synergistic effects. Balanced surface activity and emulsification ability may be key to formulate effective BBDs. Of the BBDs evaluated, surfactins with an effective dispersant-to-oil ratio as low as 1:62.3 and trehalose lipids with high oil affinity, biodegradation rate, and low toxicity characteristics show the most promise for commercial development.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Petróleo / Contaminación por Petróleo Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2021 Tipo del documento: Article Pais de publicación: Países Bajos
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Petróleo / Contaminación por Petróleo Idioma: En Revista: J Hazard Mater Asunto de la revista: SAUDE AMBIENTAL Año: 2021 Tipo del documento: Article Pais de publicación: Países Bajos