银杏外种皮厌氧消化产气特性研究OA

In order to grasp the gas production rule and potential of anaerobic digestion of Ginkgo biloba sarcotesta,and to investigate its feasibility to be used as a raw material for biogas fermentation.This experiment adopted a complete mixed batch fermentation device,and studied the anaerobic digestion characteristics of Ginkgo biloba sarcotesta under the following conditions:the concentration of anaerobic activated sludge was 50%,the fermentation temperature of medium temperature was(36±1)℃.The results showed that the gas production period of Ginkgo biloba sarcotesta was 18 days,the cumulative gas output was 1 885 mL,and the cumulative methane output was 480 mL,accounting for 25.46%of the total gas output;the TS gas output rate and methane output rate of Ginkgo biloba sarcotesta were 421 mL/g and 107 mL/g,respectively,and the VS gas output rate and methane output rate were 635 mL/g and 161 mL/g,respectively.Therefore,the gas output rates of TS and VS were high,but the methane content in the produced gas was low.It was speculated that the Ginkgo biloba sarcotesta contained components inhibiting biogas fermentation,so it was not suitable for biogas fermentation alone.