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Study of the first isolated fungus capable of heavy crude oil biodesulfurization / Sarah Torkamani in Industrial & engineering chemistry research, Vol. 47 N°19 (Octobre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 N°19 (Octobre 2008) . - p. 7476–7482 Titre : Study of the first isolated fungus capable of heavy crude oil biodesulfurization Type de document : texte imprimé Auteurs : Sarah Torkamani, Auteur ; Jalal Shayegan, Auteur ; Soheila Yaghmaei, Auteur Année de publication : 2008 Article en page(s) : p. 7476–7482 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Oil  industry  Desulfirization  Fungus Résumé : To meet stringent emission standards stipulated by regulatory agencies, the oil industry is required to bring down the sulfur content in fuels. Oil supplies 38% of the worldwide energy, and as the light oil is limited and meanwhile the energy demand is increasing, it is a must to use heavy crude oil and therefore desulfurize it to meet environmental standards. As it is not feasible to desulfurize all the sulfur containing compounds of heavy crude oil by the existing methods (such as hydro-desulfurization) we have focused on biodesulfurization of heavy crude oil. We have isolated the first native fungus which has been identified as Stachybotrys sp. and is able to remove sulfur and nitrogen from heavy crude oil selectively at 30 °C. This fungus (labeled as WS4 with BBRC-9052 code) is able to desulfurize 76% and 64.8% of the sulfur content of heavy crude oil of Soroush oil field and Kuhemond oil field (with the initial sulfur contents of 5 wt % and 7.6 wt %, respecticely) in 72 and 144 h, respectively. We have studied the impacts of several parameters on heavy crude oil biodesulfurization efficiency of WS4 fungus strain such as initial pH of the medium, water−oil ratio, and number of spores in the suspension used for inoculation. A comparison between the heavy crude oil biodesulfurization capability of WS4 fungus and the thermophilic BBRC-9016 bacterium, which is active at 45 °C, has been conducted. The role of medium formulation on isolating a suitable desulfurizing microorganism has been presented. This fungus strain has been isolated as a part of the heavy crude oil biodesulfurization project initiated by Petroleum Engineering Development Company (PEDEC), a subsidiary of National Iranian Oil Company. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800494p [article] Study of the first isolated fungus capable of heavy crude oil biodesulfurization [texte imprimé] / Sarah Torkamani, Auteur ; Jalal Shayegan, Auteur ; Soheila Yaghmaei, Auteur . - 2008 . - p. 7476–7482. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 N°19 (Octobre 2008) . - p. 7476–7482 Mots-clés : Oil  industry  Desulfirization  Fungus Résumé : To meet stringent emission standards stipulated by regulatory agencies, the oil industry is required to bring down the sulfur content in fuels. Oil supplies 38% of the worldwide energy, and as the light oil is limited and meanwhile the energy demand is increasing, it is a must to use heavy crude oil and therefore desulfurize it to meet environmental standards. As it is not feasible to desulfurize all the sulfur containing compounds of heavy crude oil by the existing methods (such as hydro-desulfurization) we have focused on biodesulfurization of heavy crude oil. We have isolated the first native fungus which has been identified as Stachybotrys sp. and is able to remove sulfur and nitrogen from heavy crude oil selectively at 30 °C. This fungus (labeled as WS4 with BBRC-9052 code) is able to desulfurize 76% and 64.8% of the sulfur content of heavy crude oil of Soroush oil field and Kuhemond oil field (with the initial sulfur contents of 5 wt % and 7.6 wt %, respecticely) in 72 and 144 h, respectively. We have studied the impacts of several parameters on heavy crude oil biodesulfurization efficiency of WS4 fungus strain such as initial pH of the medium, water−oil ratio, and number of spores in the suspension used for inoculation. A comparison between the heavy crude oil biodesulfurization capability of WS4 fungus and the thermophilic BBRC-9016 bacterium, which is active at 45 °C, has been conducted. The role of medium formulation on isolating a suitable desulfurizing microorganism has been presented. This fungus strain has been isolated as a part of the heavy crude oil biodesulfurization project initiated by Petroleum Engineering Development Company (PEDEC), a subsidiary of National Iranian Oil Company. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800494p