期刊
BIORESOURCE TECHNOLOGY
卷 174, 期 -, 页码 198-203出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2014.10.025
关键词
Biorefinery; Hydrolysis; Phenolic lignin; Lime treatment; Anion exchange resin
资金
- National Natural Science Foundation of China [31300492, 31370581]
- Department of Science and Technology of Shandong Province [2013BSB01278]
- Yellow River Mouth Scholar Program [DYRC20120105]
The specific elimination of lignin derivatives from wood hydrolysate without sugar loss has great practical significance to biorefinery and bioenergy. In the present study, a process consisting of calcium hydroxide and anion exchange resin treatments was developed for the purpose of selective removal of lignin from wood prehydrolysis liquor (PHL). Particular emphasis was made on the ionization of phenolic lignin, and the subsequent binding to metallic salts. It was observed that phenolic hydroxyl groups (PhOH) in lignin played an important role in lignin removal. The results showed that up to 95.2% lignin was removed from PHL with 78.8% sugar recovery. This suggested that the proposed process is highly specific to lignin, and therefore can be envisaged as a great contribution to wood-sugar production or bioenergy conversion. (C) 2014 Elsevier Ltd. All rights reserved.
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