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Analysis of Grease Degradation and Its Impact on the Anaerobic Digestion of Kitchen Wastewater
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    Abstract:

    The fermentation performance of kitchen grease and the influence on the biogas production fr om kitchen wastewater were studied by batch experiment.The results showed that,the gas production process of kitchen grease can be fitted well with Modified Gompertz equation and the potential production of biogas was about 894 mL/g with temperature of 55 ℃.Lag periods were observed at the initial stage of grease degradation,and the lag time of each group was increased with its concentration.The optimum degradation of grease was at the concentration of 10.0 g/L.Hemiinhibitory concentration of grease was identified as 11.6 g/L.When the grease and kitchen wastewater were mixed,not only the gas production improved by 131%,but also the average methane content increased from 58.93% to 64.06%,8.7% raised compared to the single kitchen wastewater group.

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LIAO Jia-lin, ZHAO Ming-xing, HUANG Zhen-xing, RUAN Wen-quan. Analysis of Grease Degradation and Its Impact on the Anaerobic Digestion of Kitchen Wastewater[J]. Journal of Food Science and Biotechnology,2013,32(8):803-808.

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History
  • Received:November 23,2012
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  • Online: October 28,2013
  • Published: August 25,2013
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