title: Selective removal of phenolic lignin derivatives enables sugars recovery from wood prehydrolysis liquor with remarkable yield.
abstract: 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.
authors.affiliation: Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China. Electronic address: wzj@qlu.edu.cn.
authors.forename: Zhaojiang
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China.
authors.forename: Jungang
authors.initials: J
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China.
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Wang
authors.affiliation: Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China.
authors.forename: Yingjuan
authors.initials: Y
authors.lastname: Fu
authors.affiliation: Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China.
authors.forename: Zongquan
authors.initials: Z
authors.lastname: Li
authors.affiliation: Huatai Group Corp. Ltd., Dongying, Shandong 257335, China.
authors.forename: Fengshan
authors.initials: F
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Paper Science & Technology, Qilu University of Technology, Jinan 250353, China; Laboratory of Organic Chemistry, Taishan University, Taian 271021, China; Huatai Group Corp. Ltd., Dongying, Shandong 257335, China. Electronic address: qmh@qlu.edu.cn.
authors.forename: Menghua
authors.initials: M
authors.lastname: Qin
mesh_terms: D000468:Alkalies / Q000494:pharmacology; D000837:Anion Exchange Resins; D017610:Calcium Compounds / Q000494:pharmacology; D002241:Carbohydrates / Q000302:isolation & purification*; D004553:Electric Conductivity; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis / Q000187:drug effects; D007477:Ions; D008031:Lignin / Q000302:isolation & purification*; D008670:Metals / Q000494:pharmacology; D010087:Oxides / Q000494:pharmacology; D010636:Phenols / Q000302:isolation & purification*; D032107:Populus / Q000737:chemistry; D055672:Static Electricity; D013696:Temperature; D014865:Waste Disposal, Fluid; D014934:Wood / Q000737:chemistry*
chemical_list: D000468:Alkalies; D000837:Anion Exchange Resins; D017610:Calcium Compounds; D002241:Carbohydrates; D007477:Ions; D008670:Metals; D010087:Oxides; D010636:Phenols; D008031:Lignin; C016538:lime
keywords: Anion exchange resin; Biorefinery; Hydrolysis; Lime treatment; Phenolic lignin