%0 Journal Article
%T Experimental Investigation of the Straw Pre-treatment to Enhance Its High Solid Anaerobic Digestion<br>秸秆高固体厌氧消化预处理实验研究
%A JIANG Jian-guo
%A ZHAO Zhen-zhen
%A DU Xue-juan
%A SUI Ji-chao
%A WU Shi-yao
%A <br>蒋建国
%A 赵振振
%A 杜雪娟
%A 隋继超
%A 吴时要
%J 环境科学
%D 2007
%I 
%X The straw contains a high content of lignin,which cannot be well utilized by anaerobic bacteria in high solid anaerobic digestion process.This paper presents the experimental investigation of the straw pre-treatment,which aims to destroy the complex structure of the lignin to enhance its high solid anaerobic digestion.The straw is pre-treated in different solutions including NaOH,ammonia,H_2SO_4,and carbamide.The pre-treating effects are expressed by COD concentration dissolved in the solutions and the 14-day biogas generation in the enhanced aerogenic experiment.Different affecting factors,such as the concentration of the chemical solution,the species of the straw,the pre-treatment reaction time,the reaction temperature and the size of the straw,are investigated.The results show that NaOH solution is the most effective pre-treatment chemical among the four different solutions.The experimental results still indicate that the accumulative biogas production can be(1?500) mL(10 g straw) in 14 days after pre-treatment in 4(mg/L) NaOH solution and the dissolved COD in the solution reaches(39?000)(mg/L) after 24 hours.In addition,the experiment shows that the lignin content in the straw is reduced from 28% to 19% after pre-treatment in 1.5%(in weight) NaOH solution,and it can improve the straw treatment efficiency using high solid anaerobic digestion process.
%K straw
%K high solid anaerobic digestion
%K bio-energy
%K lignin
%K enhanced aerogenic experiment<br>秸秆
%K 高固体厌氧消化
%K 生物质能
%K 木质素
%K 加速产气实验
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=9965927DA1DA3A8CF93F9D78A793508B&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=E158A972A605785F&sid=AE1A1B758F4F84BC&eid=38DB5AF4AD8FDCCA&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=23