高温NaOH预处理对秸秆高固体厌氧消化的影响  

Effects of hot NaOH on straw pre-treatment in high-solid anaerobic digestion

作　　者：王小韦[1] 李秀金[1] 刘新春[2] 刘研萍[1] 

机构地区：[1]北京化工大学环境科学与工程系,北京100029 [2]中国科学院研究生院资源与环境学院,北京100049

出　　处：《现代化工》2009年第S2期200-203,共4页Modern Chemical Industry

基　　金：国家"863"计划项目(2006AA10Z425);国家科技支撑计划(2007BAD87B12-3A)

摘　　要：研究了NaOH与高温综合预处理对秸秆高固体厌氧消化的影响。利用正交实验考察NaOH浓度、预处理温度和时间对预处理效果的影响。结果表明影响力由大到小的顺序为NaOH浓度、温度、浸泡时间。最佳预处理条件为:NaOH浓度3%,处理温度85℃,浸泡时间36 h。经过高固体厌氧产气实验,常温25℃NaOH预处理后的秸秆产气量相比未经预处理的秸秆,总产气量提高21.68%;而在85℃NaOH预处理后的秸秆产气量相比则提高30.63%。An experiment is carried out to study the influence on anaerobic digestion by hot NaOH aqueous solution.The orthogonal experimental program is made to determine the effects of NaOH concentration,temperature and pre-treatment time,as a result,NaOH concentration,temperature and pre-treatment time in turn.The optimal pre-treatment conditions are obtained as follows:3% of NaOH concentration,85℃ and 36 hours of pre-treatment.After high-solid anaerobic digestion experiments at 25℃ with NaOH and 85℃ with NaOH,compared with raw straw,the total gas production rates increase by 21.68% and 30.63%,respectively.

关 键 词：秸秆 预处理 正交实验 高固体厌氧消化 

分 类 号：TQ352.1[化学工程]