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桉木自催化水解液表征及高效脱色工艺的研究     被引量:1

Comprehensive characterization and efficient decoloriztion process for auto-hydrolysate of Eucalyptus prior to pulping

文献类型:期刊文献

中文题名:桉木自催化水解液表征及高效脱色工艺的研究

英文题名:Comprehensive characterization and efficient decoloriztion process for auto-hydrolysate of Eucalyptus prior to pulping

作者:丛高鹏[1,2,3,4,5] 施英乔[1,2,3,4,5] 沈葵忠[1,2,3,4,5] 韩善明[1,2,3,4,5] 李四辉[1,2,3,4,5] 房桂干[1,2,3,4,5]

第一作者:丛高鹏

机构:[1]中国林业科学研究院林产化学工业研究所;[2]生物质化学利用国家工程实验室;[3]国家林业局林产化学工程重点开放性实验室;[4]江苏省生物质能源与材料重点实验室;[5]中国林业科学研究院林业新技术研究所

年份:2013

卷号:34

期号:19

起止页码:207-213

中文期刊名:食品工业科技

外文期刊名:Science and Technology of Food Industry

收录:CSTPCD;;北大核心:【北大核心2011】;CSCD:【CSCD2013_2014】;

基金:林业公益性行业专项(201204801)

语种:中文

中文关键词:自催化水解糖液;低聚木糖;脱色;活性炭;聚丙烯酸钠

外文关键词:auto- hydrolysate ; xylootigosaccharide; decoloration ; activated carbon ; PAAS

分类号:TS201.1

摘要:桉木生物质精炼自催化水解糖液富含大量木糖及低聚木糖成分。为实现糖液精炼及高附加值利用,新型高效脱色实验表明,粉末活性炭与聚丙烯酸钠形成沉降性能很好的絮体,脱色效率高且糖保留效果较好。静态脱色优选粉末活性炭AC7,1000r/min磁力搅拌10min后,聚丙烯酸钠10-20mg/kg絮凝,脱色率最高可达95%以上,糠醛去除率接近100%,可溶性木质素去除率达76.5%。利用IC、SEM、FT—IR、GC-MS、ICP-AES等分析手段对该水解液及色素吸附沉淀物进行了综合分析,表明水解色素类物质以木质素及其水解芳香族产物为主,脱色后糖液金属含量较低。
The auto-hydrolysate of eucalyptus prior to pulping proved that the hydrolysate was of biomass resources, rich in xylose and xylooligosaccharide.ln order to get high value-added product and meet with the engineering operability,experimental results showed that the selected powder activated carbon(AC?)adsorption (with 100r/min magnetic stirring for 10min) combined with PAANa ( 10- 20mg/kg) flocculation could reach high decoloriztion ratio( above 95% )with good sugar retention.Besides, the furfural and lignin removal ratio reached almost 100% and ?6.5% separately.Combined with IC, SEM, FT-IR, GC-MS and ICP-AES analysis of the hydrolysate and pigment in sediment, it proved that lignin and its degradation products greatly contributed to coloring,the heavy mental in hydrolysate after decoloriztion at low level.

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