Comparison of several ethanol productions using xylanase, inorganic salts, surfactant

2nd International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Wu, Yan^1 ; Lu, Jie^1 ; Yang, Rui-Feng^1 ; Song, Wen-Jing^1 ; Li, Hai-Ming^1,2 ; Wang, Hai-Song^1 ; Zhou, Jing-Hui^1

Dalian Polytechnic University, Dalian, China^1

State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, China^2

关键词: Ethanol concentrations;    Ethanol production;    Inorganic salts;    Lignocellulosic material;    Liquid hot water;    Magnesium ions;    Pre-Treatment;    Simultaneous saccharification and fermentation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/59/1/012054/pdf
DOI  :  10.1088/1755-1315/59/1/012054

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Liquid hot water (LHW) pretreatment is an effective and environmentally friendly method to produce bioethanol with lignocellulosic materials. Corn stover was pretreated with liquid hot water (LHW) and then subjected to semi-simultaneous saccharification and fermentation (S-SSF) to obtain high ethanol concentration and yield. The present study aimed to confirm the effect of several additives on the fermentation digestibility of unwashed WIS of corn stover pretreated with LHW. So we also investigated the process, such as enzyme addition, inorganic salts, surfactant and different loading Triton. Results show that high ethanol concentration is necessary to add xylanase in the stage of saccharification. The ethanol concentration increased mainly with magnesium ion on fermentation. Comparing with Tween 80, Span 80 and Polyethylene glycol, Triton is the best surfactant. In contrast to using xylanase and Triton respectively, optimization can make up the lack of stamina and improve effect of single inorganic salts.