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      Biodiesel production from waste cooking oil using a heterogeneous catalyst from pyrolyzed rice husk.

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          Abstract

          A solid acid catalyst was prepared by sulfonating pyrolyzed rice husk with concentrated sulfuric acid, and the physical and chemical properties of the catalyst were characterized in detail. The catalyst was then used to simultaneously catalyze esterification and transesterification to produce biodiesel from waste cooking oil (WCO). In the presence of the as-prepared catalyst, the free fatty acid (FFA) conversion reached 98.17% after 3h, and the fatty acid methyl ester (FAME) yield reached 87.57% after 15 h. By contrast, the typical solid acid catalyst Amberlyst-15 obtained only 95.25% and 45.17% FFA conversion and FAME yield, respectively. Thus, the prepared catalyst had a high catalytic activity for simultaneous esterification and transesterification. In addition, the catalyst had excellent stability, thereby having potential use as a heterogeneous catalyst for biodiesel production from WCO with a high FFA content.

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          Author and article information

          Journal
          Bioresour. Technol.
          Bioresource technology
          Elsevier BV
          1873-2976
          0960-8524
          Feb 2014
          : 154
          Affiliations
          [1 ] Key Laboratory for Biomass Clean Energy of Anhui Province, University of Science and Technology of China, Hefei 230026, China.
          [2 ] Key Laboratory for Biomass Clean Energy of Anhui Province, University of Science and Technology of China, Hefei 230026, China. Electronic address: xfzhu@ustc.edu.cn.
          Article
          S0960-8524(13)01910-X
          10.1016/j.biortech.2013.12.070
          24405650
          3314d210-3f3d-4d51-9544-6ac2eb348fc4

          Biodiesel,Rice husk char,Solid acid catalyst,Waste cooking oil

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