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NaOH处理对互花米草深度气化利用的影响
引用本文:陈广银,郑正,常志州,叶小梅.NaOH处理对互花米草深度气化利用的影响[J].环境科学,2011,32(8):2485-2491.
作者姓名:陈广银  郑正  常志州  叶小梅
作者单位:1. 江苏省农业科学院农业资源与环境研究所江苏省农业废弃物资源化工程技术研究中心,南京210014 南京大学环境学院,污染控制与资源化研究国家重点实验室,南京210093
2. 复旦大学环境科学与工程系,上海,200433
3. 江苏省农业科学院农业资源与环境研究所江苏省农业废弃物资源化工程技术研究中心,南京,210014
基金项目:国家水体污染控制与治理科技重大专项(2008ZX07101-004); 农业部行业计划项目(200903011-01)
摘    要:在实验室条件下,考察了NaOH固相处理用于互花米草中温干式发酵以及一次发酵后沼渣二次发酵的预处理方式的可行性,从产气特性、物质转化等角度进行了系统的分析.结果表明,NaOH处理对互花米草中温干式发酵产气未表现出促进作用,干物质(TS)产气量为358.94 mL/g,仅为CK的92.42%,但甲烷平均含量提高了1.84%...

关 键 词:NaOH处理  互花米草  深度气化  厌氧消化  沼气
收稿时间:2010/9/23 0:00:00
修稿时间:2010/11/29 0:00:00

Effect of NaOH-Treatment on Advanced Anaerobic Biogasification of Spartina alterniflora
CHEN Guang-yin,ZHENG Zheng,CHANG Zhi-zhou and YE Xiao-mei.Effect of NaOH-Treatment on Advanced Anaerobic Biogasification of Spartina alterniflora[J].Chinese Journal of Environmental Science,2011,32(8):2485-2491.
Authors:CHEN Guang-yin  ZHENG Zheng  CHANG Zhi-zhou and YE Xiao-mei
Institution:Jiangsu Agricultural Waste Treatment and Recycle Engineering Research Center, Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China. chengy522@gmail.com
Abstract:In order to improve the biotransformation rate of Sparnina alterniflora, effect of NaOH-treatment on anaerobic dry-mesophilic digestion of Spartina alterniflora and feasibility of NaOH-treatment as a pretreatment of biogas residues of Spartina alterniflora for advanced anaerobic biogasification were conducted under lab-scale conditions. The results indicated that there was less improvement to biogas yield with NaOH-treatment and the cumulative biogas yield of Spartina alterniflora was 358.94 mL/g TS which was 92.42% to that of control (CK). However, the average methane content was improved slightly with 1.84% improvement. After solid-state pretreatment with 5% NaOH solution for 48 h, the biogas residue of Spartina alterniflora was used for advanced biogasification. This experiment was conducted under 35 degrees C +/- 1 degrees C with initial total solid loading of 8%. The cumulative biogas yield was 209.73 mL/g TS with 70.78% of average methane content, but the biotransformation rate was only 23.29% which was much lower than that of Spartina alterniflora. The fermentation type was propionic acid type fermentation. After two-phase fermentation treatment, cellulose content was decreased significantly while lignin and hemicellulose content were increased. The crystalinity of cellulose of biogas residue decreased after two-phase anaerobic fermentation which was consistent to result of FTIR. The comprehensive analysis of experiment indicated that biogas residue of Spartina alterniflora was still a good material for biogas production and NaOH-treatment was a good pretreatment for biogas production.
Keywords:NaOH-treatment  Spartina alterniflora  advanced anaerobic biogasification  anaerobic digestion  biogas
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