Mechanism and kinetics model of hydrolysis in anaerobic digestion of kitchen wastes

被引：1

作者：

吴云 ^{[1
]}

张代钧 ^{[1
]}

杨钢 ^{[2
]}

机构：

[1] College of Resource and Environmental Science,Chongqing University

[2] Department of Geography,Chongqing Educational College

来源：

Journal of Central South University | 2009年 / 16卷 / S1期

关键词：

kitchen waste; anaerobic digestion; hydrolysis; kinetic model; diffusion resistance;

D O I：

暂无

中图分类号：

X705 [固体废物的处理与利用];

学科分类号：

083002 ;

摘要：

The profile of hydrolysates during the anaerobic digestion of kitchen wastes was investigated. The experimental results show that the hysteresis of hydrolytic rate is mainly controlled by the diffusion effect. The hydrolytic mechanism of kitchen wastes is elaborated by taking the diffusion effect into consideration. A segment model of the hydrolysis for kitchen waste is formulated including the coefficient of diffusion resistance in the model. The coefficients of diffusion resistance for different particle sizes are 1.42,2.12 and 2.78 respectively based on the experimental data,in which the coefficients of diffusion resistance conform an exponential function. So,the partitioning kinetic model could be integrated as a unified experience model. The model is verified with experimental data,which shows that the model could predict the concentration of organic substances during the anaerobic digestion of kitchen wastes.

引用

页码：338 / 344

页数：7