厌氧条件下纤维素降解产气的研究  

Study on anaerobic digestion of cellulosic waste and its dynamics model

作　　者：杨渤京[1] 王洪涛[1] 陆文静[1] 牟子申[1] 

机构地区：[1]清华大学环境科学与工程系,北京100084

出　　处：《中国环境科学》2008年第3期255-259,共5页China Environmental Science

基　　金："十一五"国家科技支撑计划项目(2006BAC06B05)

摘　　要：进行了生活垃圾中纤维素组分在厌氧条件下的降解特性试验,选用纯纤维素物料作为原料,采用单因素试验设计,考察了不同温度下（30～50℃）纤维素物料的降解动力学规律.结果表明,30℃为纤维素物料厌氧降解的最佳温度,最高产气和产甲烷量分别达到了620.4,357.2mL/g,产气过程分为适应期、快速增长期和稳定期3个阶段.基于物料守恒和Monod方程的动力学模型参数根据试验数据来确定,而不是来自于经验值.通过混合物料降解试验验证,试验值与模拟值吻合得较好.Digestion and biogas production of cellulose powder in landfills under anaerobic condition were investigated adopting single factor test design within a temperature range（30-50℃）. The highest cumulative biogas and CH4 yield were obtained at 30℃, were 620.4, 357.2 mL/g respectively, The bioconversion of cellulose was characterized with three phases, i.e. adaptation phase, rapid growth phase and decay phase. A dynamic model based on mass balance and the Monod model was developed for characterization of cellulose anaerobic digestion. Rather than being taken empirically, the coefficients for the models were obtained from the above experimental data. Simulated values from the models was within an acceptable range with experimental data in the verifying test.

关 键 词：纤维素物料 厌氧降解 动力学模型 MONOD方程 

分 类 号：X703.5[环境科学与工程—环境工程]