首页|中温和高温条件下餐厨垃圾厌氧发酵产气动力学的研究

中温和高温条件下餐厨垃圾厌氧发酵产气动力学的研究

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研究以餐厨垃圾为原料,在中温(37 ℃)和高温(55 ℃)条件下开展批次试验.通过测定各项产气指标探究不同温度对餐厨垃圾厌氧发酵产气性能的影响,并采用Gompertz模型和一级动力学模型对中温和高温条件下餐厨垃圾厌氧发酵累计产甲烷量进行拟合.结果表明,高温厌氧发酵最大产甲烷潜能为398.33 mL·g-1VS,高出中温发酵32.37％,高温条件下餐厨垃圾厌氧发酵累积沼气产量和甲烷产量分别为665.89和399.41 mL·g-1VS,显著高于中温条件下的累积沼气产量及甲烷产量.餐厨垃圾高温发酵甲烷生成速率常数k为0.43558d-1,高于中温发酵动力学常数(k=0.31367d-1),餐厨垃圾高温厌氧发酵产甲烷速率高于中温发酵.综上所述,相较于中温条件,高温条件下餐厨垃圾批次厌氧发酵产气性能更优异.
Anaerobic Fermentation Kinetics of Kitchen Waste at Mesophilic and Thermophilic
The present study aimed to investigate the effects of temperature on the anaerobic digestion(AD)of kitchen waste.Batch experiments were conducted using kitchen waste as the substrate,with mesophilic(37 ℃)and thermophilic(55 ℃)conditions being tested.To measure the gas production indicators,various parameters were monitored.The Gomp-ertz and first-order kinetic models were utilized to fit the cumulative methane production during the AD of kitchen waste.The findings revealed that the maximum methane potential achieved through thermophilic AD was 398.33 mL·g-1 VS,which showed a remarkable 32.37％increase compared to mesophilic AD.Moreover,the cumulative biogas and methane production during thermophilic conditions reached 665.89 and 399.41 mL·g-1 VS,respectively,indicating a significantly higher output than that observed under mesophilic conditions.Additionally,thermophilic AD's methane production rate con-stant(k=0.43558 d-1)was greater than mesophilic AD's(k=0.31367 d-1),suggesting a faster biogas production rate in the former.In summary,the results demonstrated that thermophilic conditions exhibited superior gas production perform-ance during batch anaerobic fermentation of kitchen waste compared to mesophilic conditions.

kitchen wasteanaerobic fermentationgas production performancemethanogenic potentialkinetic constant

雷立帆、陈金阳、于欣卉、郭利利、毕少杰、王彦杰

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黑龙江八一农垦大学生命科学技术学院,黑龙江省寒区环境微生物与农业废弃物资源化利用重点实验室,黑龙江大庆 163319

黑龙江八一农垦大学生命科学技术学院,农业农村部东北平原农业绿色低碳重点实验室,黑龙江大庆 163319

餐厨垃圾 厌氧发酵 产气性能 产甲烷潜能 动力学常数

黑龙江八一农垦大学研究生创新科研项目(2021)黑龙江八一农垦大学学成、引进人才科研启动基金黑龙江八一农垦大学学成、引进人才科研启动基金大庆市指导课题

YJSCX2021-Y111XYB202022XDB2015-26zd-2021-91

2024

10.20022/j.cnki.1000-1166.2024020031

中国沼气
中国沼气学会 农业部沼气科学研究所

中国沼气

CSTPCD
影响因子：0.738
ISSN：1000-1166
年,卷(期)：2024.42(2)
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