玉米秸秆稀酸预水解液两种脱毒方法的研究

doi:10.3969/j.jssn.1000-2006.2011.06.015

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微信公众号：南京林业大学学报

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南京林业大学学报（自然科学版） ›› 2011, Vol. 35 ›› Issue (06): 71-76.doi: 10.3969/j.jssn.1000-2006.2011.06.015

玉米秸秆稀酸预水解液两种脱毒方法的研究

朱均均,勇强,徐勇,陈牧，龚泽颖，余世袁

南京林业大学化学工程学院，林木遗传与生物技术省部共建教育部重点实验室，江苏省生物质绿色燃料与化学品重点实验室，江苏南京210037

出版日期:2011-11-28 发布日期:2011-11-28
基金资助:
收稿日期：2010-05-13修回日期：2011-09-13基金项目：国家林业局林业公益性行业科研专项项目（201004001）；国家自然科学基金项目（30871992）；江苏高校科技创新团队资助项目；江苏高校优势学科建设工程资助项目〖ZK）〗作者简介：朱均均（1979—），讲师，博士。Email: njfu_zjj@yahoo.com.cn。

Detoxification of dilute acid pretreated corn stover prehydrolyzate by two methods

ZHU Junjun, YONG Qiang, XU Yong, CHEN Mu, GONG Zeying,YU Shiyuan

College of Chemical Engineering, Nanjing Forestry University, Key Laboratory of Forest Genetics & Biotechnology, Ministry of Education, Jiangsu Key Lab of Biomassbased Green Fuel & Chemicals, Nanjing 210037, China

Online:2011-11-28 Published:2011-11-28

摘要/Abstract

摘要： 以玉米秸秆稀酸预水解液为原料，研究了减压蒸发和络合萃取两种脱毒方法对乙酸等抑制物的去除情况。结果表明：玉米秸秆稀酸预水解液减压蒸发脱毒，糠醛完全被去除，而5-羟甲基糠醛则基本不能被去除；当水解液浓缩5.80倍时，其浓缩液中乙酸质量浓度和去除率分别为4.06 g/L和60.45 %。络合萃取脱毒的最佳条件：络合萃取剂的组成为30 %三烷基胺+50 %正辛醇+20 %煤油，油水相比2〖DK〗∶1，温度25 ℃，时间60 min，此时脱毒液中乙酸质量浓度和去除率分别为1.43 g/L和52.33 %，糠醛完全被去除，5-羟甲基糠醛的去除率为27.78 %。

Abstract: Two kinds of detoxification methods, vacuum evaporation and complex extraction were applied to remove inhibitors presented in the dilute acid pretreated corn stover prehydrolyzate. The results showed that furfural was completely removed, while 5hydroxymethylfurfural was not removed at all by only vacuum evaporation. When the prehydrolyzate was condensed to 5.80 times, the concentration of acetic acid in the condensed prehydrolyzate and its removal ratio were 4.06 g/L and 60.45 %, respectively. The optimal conditions of complex extraction detoxification were that 30 % trialkylamine +50 % noctanol +20 % kerosene was at the ratio of organic to aqueous phase of 2〖DK〗∶1, and 25 ℃ for 60 min. At this time, the concentration of acetic acid was 1.43 g/L, and the removal ratio of acetic acid, furfural and 5hydroxymethylfurfural were 52.33 %, 100 % and 27.78 %, respectively.

中图分类号:

TQ353.4

朱均均,勇强,徐勇,等. 玉米秸秆稀酸预水解液两种脱毒方法的研究[J]. 南京林业大学学报（自然科学版）, 2011, 35(06): 71-76.

ZHU Junjun, YONG Qiang, XU Yong, CHEN Mu, GONG Zeying,YU Shiyuan. Detoxification of dilute acid pretreated corn stover prehydrolyzate by two methods[J].Journal of Nanjing Forestry University (Natural Science Edition), 2011, 35(06): 71-76.DOI: 10.3969/j.jssn.1000-2006.2011.06.015.

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玉米秸秆稀酸预水解液两种脱毒方法的研究

Detoxification of dilute acid pretreated corn stover prehydrolyzate by two methods

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