向日葵籽壳湿氧化预处理与同步糖化发酵制生物乙醇  

Preparation of bioethanol from wet oxidized sunflower seed shell by simultaneous saccharification and fermentation

作　　者：牟晓红[1] 赵成赟 

机构地区：[1]兰州石化职业技术学院石化系,甘肃兰州730060 [2]吉林大学材料科学与工程学院,吉林长春130025

出　　处：《石化技术与应用》2014年第6期399-401,共3页Petrochemical Technology & Application

基　　金：甘肃省高等学校研究生导师科研资助项目[项目编号:甘财教[2012]90号(1216-03)]

摘　　要：以食用型向日葵籽壳为原料,采用湿氧化预处理和同步糖化发酵法制备生物乙醇,并通过正交实验确定了二者最佳工艺条件。结果表明,前者最佳工艺条件为:反应温度190℃,氧气压强1.2 MPa,过筛干燥后的向日葵籽壳/混合溶液(质量体积比)1∶10,时间15 min;后者最佳工艺条件为:反应温度40℃,纤维素酶用量30 U/g,p H值4.8,酵母接种量8%。在此条件下,纤维素转化率为83.66%,光密度为0.995,含糖量为243.3 mg,生物乙醇收率为18.04%。The bioethanol was preparaed from sunflow- er seed shell by wet oxidation pretreatment and simulta- neous saccharification and fermentation （SSF）, and the best process conditions were confirmed by orthogonal tests. The results showed that the optimum process condition for wet oxidation was reaction temperature 190 ℃ , oxygen pressure 1.2 MPa, pretreated sun- flower seed shell/hydrolysis mixed solution （ratio of mass to volume） 1： 10, pretreatment time 15 min.The optimum condition for the SSF was reaction temperature 40 ℃ , cellulase amount 30 U/g, pH value 4.8, yeast inoculums 8%. Under these conditions, the cellulose conversion was 83.66% ,optical density value 0. 995, sugar content 243.3 mg, and the yield of bioethanol nearly 18.04%.

关 键 词：向日葵籽壳 湿氧化法 预处理 纤维素酶 同步糖化发酵 生物乙醇 

分 类 号：TQ223.122[化学工程—有机化工]