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首页> 外文期刊>Biofuels >Evaluation of the anaerobic digestion of kitchen waste by thermal pretreatment in a batch leach bed reactor with down flow and the kinetics of methane yields
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Evaluation of the anaerobic digestion of kitchen waste by thermal pretreatment in a batch leach bed reactor with down flow and the kinetics of methane yields

机译：间歇式浸出床反应器中的热预处理对厨余废水厌氧消化的评估以及甲烷产率的动力学

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The aim of this study was to evaluate the effects of autoclave and microwave irradiation (MW) pretreatments on the solubilization, biogas and methane yields of kitchen waste (KW). Autoclave (for 30 min @ 120 degrees C, 1 bar) and MW (for 400 s @ 80 degrees C, 700 W) pretreatments were used to enhance anaerobic digestion of KW. The anaerobic digestion of KW in autoclave and MW pretreatments were compared with a control in a batch leach bed reactor with down flow (LBR DF). During autoclave and MW pretreatments, the biogas yields were respectively 25.41 and 41.43% higher than the control test and for methane were respectively 22.73 and 38.91% higher than the control test. The highest solubilization efficiency was obtained after MW pretreatment (89.21%), followed by after autoclave pretreatment (85.73%), and the lowest value was obtained with control (61.37%). Mathematical models fitted experimental data with R-2 0.9798. The present study shows that autoclave and MW pretreatments can be used to improve biogas and methane yields and solubilization efficiency. Schnute and modified Gompertz models gave a good fit of the first stage of fermentation as well as the asymptotic phase.
机译：这项研究的目的是评估高压灭菌器和微波辐射（MW）预处理对厨余（KW）的溶解度，沼气和甲烷产率的影响。高压釜（在120摄氏度，1巴下持续30分钟）和兆瓦（在80摄氏度，700瓦下持续400 s）预处理用于增强KW的厌氧消化。将高压釜和MW预处理中KW的厌氧消化与具有顺流（LBR DF）的分批浸出床反应器中的对照进行了比较。在高压釜和MW预处理期间，沼气产率分别比对照试验高25.41％和41.43％，甲烷的产率分别比对照试验高22.73和38.91％。 MW预处理后增溶效率最高（89.21％），高压釜预处理后增溶效率最高（85.73％），而对照液则最低（61.37％）。数学模型拟合了R-2> 0.9798的实验数据。本研究表明，高压釜和兆瓦级预处理可用于提高沼气和甲烷的产率以及溶解效率。 Schnute模型和改良的Gompertz模型非常适合发酵的第一阶段以及渐近阶段。

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