The primary goal of this study is to develop a composite material from the anthill and chicken eggshell and to use it as a catalyst for the synthesis of biodiesel from virgin and waste vegetable oils.The anthill-eggsh...The primary goal of this study is to develop a composite material from the anthill and chicken eggshell and to use it as a catalyst for the synthesis of biodiesel from virgin and waste vegetable oils.The anthill-eggshell composite(AEC)catalyst was prepared using an incipient wetness impregnation method.Central composite design(CCD)was applied to investigate the effects of catalyst preparation parameters(calcination temperature,calcination time,and anthill proportion in the AEC)on the yields of biodiesel from the two oils.Based on the CCD,two quadratic models were developed to correlate the AEC preparation parameters to the two responses.Analysis of variance(ANOVA)was performed to verify the reliability of the models and also,identify the factor that mostly affects the experimental design responses.Optimization results showed that the predicted values of biodiesel yield from the models for the two oils agreed reasonably well with the experimental values.The optimum conditions for the preparation of AEC catalyst for the transesterification process were calcination temperature of 1000℃,calcination time of 4 h,and anthill proportion of 20% to achieve 97.13%yield of biodiesel from virgin vegetable oil.At the same optimum parameters,the yield of biodiesel from waste vegetable oil was found to be 70.92%.展开更多
文摘The primary goal of this study is to develop a composite material from the anthill and chicken eggshell and to use it as a catalyst for the synthesis of biodiesel from virgin and waste vegetable oils.The anthill-eggshell composite(AEC)catalyst was prepared using an incipient wetness impregnation method.Central composite design(CCD)was applied to investigate the effects of catalyst preparation parameters(calcination temperature,calcination time,and anthill proportion in the AEC)on the yields of biodiesel from the two oils.Based on the CCD,two quadratic models were developed to correlate the AEC preparation parameters to the two responses.Analysis of variance(ANOVA)was performed to verify the reliability of the models and also,identify the factor that mostly affects the experimental design responses.Optimization results showed that the predicted values of biodiesel yield from the models for the two oils agreed reasonably well with the experimental values.The optimum conditions for the preparation of AEC catalyst for the transesterification process were calcination temperature of 1000℃,calcination time of 4 h,and anthill proportion of 20% to achieve 97.13%yield of biodiesel from virgin vegetable oil.At the same optimum parameters,the yield of biodiesel from waste vegetable oil was found to be 70.92%.
