改进玉米秸秆化学预处理提高后续生物酶解糖化效率的研究  

Improving alkaline pretreatment of corn stover to enhance enzymatic saccharification

作　　者：李强[1] 王海松[2] 高扬[1,3] 刘超[2] 牟新东[2] 秦梦华[1] 

机构地区：[1]山东轻工业学院制浆造纸科学与技术教育部重点实验室,济南250353 [2]中国科学院青岛生物能源与过程研究所,山东青岛266101 [3]华泰集团有限公司,山东东营257335

出　　处：《中华纸业》2012年第10期51-55,共5页China Pulp & Paper Industry

基　　金：山东省科技攻关计划(2008GG20002038);青岛市关键技术重大攻关计划项目(09-1-4-1-nsh)

摘　　要：采用NaOH、NaOH+AQ、NaOH+Na2SO3、H2SO4+Na2SO3、NaOH+Na2S以及H2SO4预处理玉米秸秆,通过改变最高温度和药品用量考察了不同处理方式对酶解效率及总糖得率的影响。结果表明:在相同处理条件下,采用NaOH+Na2SO3预处理有利于提高后续的酶解效率及总糖得率。在140℃及10%用碱量时,碱性亚硫酸钠法的处理效果最佳,聚葡萄糖和聚木糖的酶解效率分别达到84.7%和81.1%。基于初始原料的总糖得率约为0.44g/g初始秸秆,相比同样条件的单一NaOH预处理提高了13.5%。lln this study, corn stover was pretreated with processes of NaOH, NaOH＋AQ, NaOH＋Na2SO3, H2SO4＋Na2SO3, NaOH＋Na2S and H2SO4, the enzymolysis efficiency and total sugar yields were discussed through changing the temperature and chemical dosage in different pretreatment processes. The results show that at the same temperature and chemical dosage, a higher enzymolysis efficiency and total sugar yield are achieved in the NaOH＋Na,SO3 pretreatment. With 140℃ and 10% alkali charge, the enzymolysis efficiency ofglucan and xylan are 84.7% and 81.1% respectively, and total yield of monosaccharide （glucose and xylose） can be reached to 44% based on original biomass, which increased by 13.5% compared with the sodium hydroxide pretreatment.

关 键 词：玉米秸秆 化学预处理 生物酶解 总糖得率 

分 类 号：TS713[轻工技术与工程—制浆造纸工程] TS74