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Synergistic Effects of Anaerobic Co-Digestion of Pretreated Corn Stover with Chicken Manure and Its Kinetics
Applied Biochemistry and Biotechnology ( IF 3 ) Pub Date : 2020-10-09 , DOI: 10.1007/s12010-020-03445-0
Qiong Yu , Shaofeng Cui , Chen Sun , Ronghou Liu , Manobendro Sarker , Zhijian Guo , Ruiyin Lai

The pretreatment effects and synergistic effects of anaerobic co-digestion of pretreated corn stover (CS) with chicken manure (CM) were studied. Results showed that the NaOH-H2O2 pretreatment effect on CS was better than urea pretreatment in terms of anaerobic digestion promotion. The highest cumulative methane yield of 332.7 mL/g VS added was obtained from the CS (NaOH-H2O2 pretreated)/CM ratio of 1:3, and the highest cumulative methane yield of 319.7 mL/g VS added was obtained from the CS (urea pretreated)/CM ratio of 1:2. Synergistic effects were found in CS (NaOH-H2O2 pretreated)/CM ratios of 2:1, 1:2, 1:3 and CS (urea pretreated)/CM ratios of 1:1, 1:2. Synergistic effect was not found at CS (unpretreated)/CM ratios of 1:2 and 1:3. Pretreatment of CS can produce synergistic effect on anaerobic co-digestion and increase cumulative methane yield by 6.54–24.65%. Among the four kinetic models, modified Gompertz model was best fitted in describing the methane production during anaerobic co-digestion (R2 = 0.9845–0.9988).



中文翻译:

预处理玉米秸秆与鸡粪厌氧共消化的协同效应及其动力学

研究了预处理的玉米秸秆(CS)与鸡粪(CM)厌氧共消化的预处理效果和协同效果。结果表明,在促进厌氧消化方面,NaOH-H 2 O 2预处理对CS的效果优于尿素预处理。从CS(NaOH-H 2 O 2预处理)/ CM比为1:3获得的最高累计甲烷产量为332.7 mL / g VS,从获得的最高累积甲烷产量为319.7 mL / gVS。 CS(尿素预处理)/ CM比为1:2。在CS(NaOH-H 2 O 2预处理)/ CM比为2:1、1:2、1:3和CS(尿素预处理)/ CM比为1:1、1:2。在CS(未经预处理)/ CM比为1:2和1:3时未发现协同作用。CS的预处理可以对厌氧消化产生协同作用,并使累计甲烷产量增加6.54–24.65%。在这四个动力学模型中,改良的Gompertz模型最适合描述厌氧共消化过程中的甲烷产量(R 2  = 0.9845–0.9988)。

更新日期:2020-10-11
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