甘蔗渣温和碱/氧化法预处理的研究  

Study on mild alkaline/oxidative pretreatment of bagasse

作　　者：赵志刚[1] 程可可[2] 张建安[2] 

机构地区：[1]安徽工业大学化学与化工学院,安徽马鞍山243002 [2]清华大学核能与新能源技术研究院,北京100084

出　　处：《现代化工》2016年第4期85-88,共4页Modern Chemical Industry

基　　金：安徽省教育厅高校自然科学研究项目(RD15100176)

摘　　要：为改善甘蔗渣的酶解性能,用含有NaOH和H_2O_2的稀溶液对其进行温和碱/氧化法预处理。对影响预处理结果的各个因素进行了研究,对甘蔗渣预处理溶液进行回收循环利用4次后,NaOH的用量可节省34%;用扫描电镜对预处理前后的甘蔗渣进行表征,结果表明:预处理后甘蔗渣表面的物理结构遭到破坏,平滑连续的表面变的粗糙多孔,可增加甘蔗渣酶解时酶与纤维素的有效接触面积,提高其酶解性能。In order to improve the efficiency of bagasse hydrolysis,a mild alkaline / oxidative pretreatment with Na OH and H_2O_2 in solution is carried out. The factors that influence the pretreatment are studied. The recycling of the pretreatment solution is performed,which indicates that Na OH used in the experiment could be reduced by 34% after recycling the filtrate for four times. In addition,the structures of bagasse before and after pretreatment are analyzed by scanning electron microscope. The results make it clear that the structure of bagasse is destroyed after pretreatment by mild alkaline / oxidative method compared with bagasse raw material without pretreatment. Its smooth and contiguous surface is perforated. These pores may increase the enzyme-accessible surface area which increases the enzyme digestibility of the bagasse during hydrolysis.

关 键 词：甘蔗渣 碱/氧化 预处理 回收利用 

分 类 号：TQ35[化学工程]