Removal of inhibitors from pre-hydrolysis liquor of kraft-based dissolving pulp production process using adsorption and flocculation processes

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• 作者：Xin Liu^a ; Pedram Fatehi^b ; ^{pfatehi@lakeheadu.ca} ; Yonghao Ni^a ; ^{yonghao@unb.ca}
• 关键词：Biorefinery ; Lignocelluloses ; Activated carbon ; Adsorption ; Flocculation
• 刊名：Bioresource Technology
• 出版年：2012
• 出版时间：July, 2012
• 年：2012
• 卷：116
• 期：Complete
• 页码：492-496
• 全文大小：354 K

文摘

A process for removing inhibitors from pre-hydrolysis liquor (PHL) of a kraft-based dissolving pulp production process by adsorption and flocculation, and the characteristics of this process were studied. In this process, industrially produced PHL was treated with unmodified and oxidized activated carbon as an absorbent and polydiallyldimethylammonium chloride (PDADMAC) as a flocculant. The overall removal of lignin and furfural in the developed process was 83.3 % and 100 % , respectively, while that of hemicelluloses was 32.7 % . These results confirmed that the developed process can remove inhibitors from PHL prior to producing value-added products, e.g. ethanol and xylitol via fermentation.