Features of Adsorption Process of Hemicelluloses Extracts from Hardwood onto Cellulosic Fibers-Part 1.Effects of Adsorption Factors and Optimization
The adsorption of dissolved hemicelluloses derived from US southern mix hardwood to cellulosic fiber is an efficient way for hemicelluloses utilization.Reservation of more hemicelluloses on cellulose fibers leads to higher pulp yield,better bearability and improved pulp strengths.The primary aim of the current work was to investigate the hemiceiluloses adsorption process through treating Kraft pulp in the extract liquor.The main effects of the process factors and their interactive effects were discussed via statistical analysis.The optimization of the adsorption process was also studied.In the process of hemicelluloses adsorption,three main factors:fiber consistency,extracts to fiber ratio and temperature,showed significant effects on the adsorption.Higher ratio of extracts to fiber and higher temperature contributed to enhance hemicelluloses adsorption yield.The quadratic function that characterizes the relationship between fiber consistency and adsorption yield was determined.Overall,high concentration of extract liquor is necessary to achieve high hemicelluloses adsorption yield.There exists a strong and profound interaction between temperature and fiber consistency,therefore optimal control of both the temperature and the fiber consistency in the adsorption would improve the adsorption efficiency.Since fiber consistency is easier to control,it serves as a key parameter for increase in adsorption yield.
Adsorption Hemicelluloses extraction Experimental design Kraft pulping
WEIPING BAN ADRIAAN VAN HEININGEN
Chemical and Biological Engineering Department,The University of Maine,Orono,ME 04469,USA;Dalian Pol Chemical and Biological Engineering Department,The University of Maine,Orono,ME 04469,USA
国际会议
第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)
天津
英文
119-125
2008-05-14（万方平台首次上网日期，不代表论文的发表时间）