农业环境科学学报2011，Vol.30Issue(3)：573-578,6.
NaOH预处理花生壳厌氧发酵制取沼气的试验研究
Experiments on Anaerobic Digestion of Peanut Shell for Biogas Production Under NaOH Pretreatment
摘要
Abstract
The effect of NaOH pretreatments on characteristics of the biogas production of peanut shell was studied by experiment. In order to improve the biogas yield and potentiality, NaOH pretreatment of peanut shell without fluid water was performed at normal temperature in different mass fractions of sodium hydroxide solution, which were 2％, 4％, 6％, 8％. Simultaneously, another non-use NaOH pretreatment was performed under distilled water. After the pretreatment, a batch of experiments of peanut shell were conducted in a serf-manufactured anaerobic fermentation reactor, under the condition of 8％ mass fraction of total solid, ( 35±1 )℃, pH value 7.0～7.6. The experiment was conducted to investigate the effect of sodium hydroxide pretreatment in different mass fractions on gas production, pH values, methane content during the process of anaerobic fermentation of peanut shell. The results showed that, the total gas production of peanut shell under 4％ NaOH pretreatment was 28 083 mL, which was 48.91％ and 35.72％ higher than non-use of NaOH pretreatment and 8％ NaOH pretreatment, respectively. In addition, the methane content under 4％ NaOH pretreatment reached more than 60％, and the average methane content was higher than non-use NaOH pretreatment, 2％ and 8％NaOH pretreatments. The pH value fluctuated in initial stage, after anaerobic digestion for 13 days, it stabilized at around 7.2. The differences of TS gas yield, VS gas yield and average methane content were significant between 4％ NaOH and non-use NaOH pretreatment, 4％ and 8％ NaOH pretreatment(P＜0.05 ), respectively. By contrast, the differences were not significant between 4％ and 2％NaOH pretreatment, 4％ and 6％ NaOH pretreatment (P＞O.05), respectively. All the results indicated that 4％ NaOH pretreatment was much better.关键词
花生壳/氢氧化钠/厌氧发酵/沼气Key words
peanut shell/ sodium hydroxide/ anaerobic/ methane分类
资源环境引用本文复制引用
邵艳秋,邱凌,石勇,罗涛,邓媛方..NaOH预处理花生壳厌氧发酵制取沼气的试验研究[J].农业环境科学学报,2011,30(3):573-578,6.基金项目
国家科技支撑计划"沼气工程优化与标准化模式研究"(2007BAK31B01) （2007BAK31B01）
国家农村沼气科技支撑体系试点项目"西北地区农村沼气科技创新与示范基地工程建设"(农计函2010-120) （农计函2010-120）
西北农林科技大学推广专家支持计划项目"杨凌农村沼气与循环农业科技示范基地"(2007-4) （2007-4）
