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1,4-Dioxane degradation characteristics of Rhodococcus aetherivorans JCM 14343.
Inoue, Daisuke; Tsunoda, Tsubasa; Yamamoto, Norifumi; Ike, Michihiko; Sei, Kazunari.
Afiliação
  • Inoue D; Division of Sustainable Energy and Environmental Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan. d.inoue@see.eng.osaka-u.ac.jp.
  • Tsunoda T; Environment and Medical Sciences Course, Graduate School of Medical Sciences, Kitasato University, 1-15-1 Kitasato, Sagamihara-Minami, Kanagawa, 252-0373, Japan.
  • Yamamoto N; Division of Sustainable Energy and Environmental Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
  • Ike M; Technology Center, Taisei Corporation, 344-1 Nase-cho, Totsuka-ku, Yokohama, Kanagawa, 245-0051, Japan.
  • Sei K; Division of Sustainable Energy and Environmental Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
Biodegradation ; 29(3): 301-310, 2018 06.
Article em En | MEDLINE | ID: mdl-29696449
ABSTRACT
Rhodococcus aetherivorans JCM 14343 can degrade 1,4-dioxane as a sole carbon and energy source. This study aimed to characterize this 1,4-dioxane degradation ability further, and assess the potential use of the strain for 1,4-dioxane removal in industrial wastewater. Strain JCM 14343 was able to degrade 1,4-dioxane inducibly, and its 1,4-dioxane degradation was also induced by tetrahydrofuran and 1,4-butanediol. The demonstration that 1,4-butanediol not only induced but also enhanced 1,4-dioxane degradation was a novel finding of this study. Although strain JCM 14343 appeared not to be an effective 1,4-dioxane degrader considering the maximum specific 1,4-dioxane degradation rate (0.0073 mg-dioxane/mg-protein/h), half saturation concentration (59.2 mg/L), and cell yield (0.031 mg-protein/mg-1,4-dioxane), the strain could degrade over 1100 mg/L of 1,4-dioxane and maintain its degradation activity at a wide range of temperature (5-40 °C) and pH (4-9) conditions. This suggests the usefulness of strain JCM 14343 in 1,4-dioxane treatment under acidic and cold conditions. In addition, 1,4-dioxane degradation experiments in the presence of ethylene glycol (EG) or other cyclic ethers revealed that 1,4-dioxane degradation by strain JCM 14343 was inhibited in the presence of other cyclic ethers, but not by EG, suggesting certain applicability of strain JCM 14343 for industrial wastewater treatment.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Rhodococcus / Dioxanos Idioma: En Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Rhodococcus / Dioxanos Idioma: En Ano de publicação: 2018 Tipo de documento: Article