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玉米芯水解残渣中纤维素和木素的分离纯化
Separation and Purification of Cellulose from Corncob Hydrolysis Residues
  
DOI：10.11980/j.issn.0254-508X.2016.06.008
关键词:  玉米芯水解残渣  纤维素  木素  分离  纯化
Key Words:corncob hydrolysis residues  cellulose  lignin  separation  purification
基金项目:本课题得到国家自然科学基金(31270626,31270627,31370580,31470602)、山东省重大科技专项(2014ZZCX09101,2015ZDZX-09002)、泰山学者工程专项经费的资助。
作者单位
于　翔 齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南，250353 
杨桂花* 齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南，250353 
陈嘉川 齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南，250353 
王　超 齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南，250353 
蒋启蒙 齐鲁工业大学制浆造纸科学与技术教育部重点实验室,山东济南，250353 
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摘要:以玉米芯水解残渣为原料,采用碱性H2O2和NaClO2两段法处理,以纤维素含量与木素脱除率为指标,对纤维素和木素的分离纯化工艺进行了实验探讨。结果表明，碱性H2O2处理段较适宜的条件为：混合液中NaOH用量3%, H2O2用量0.8%和反应温度80℃；NaClO2处理段较适宜的条件为：NaClO2浓度12 g/L，处理温度70℃；经过以上两段处理,玉米芯水解残渣中纤维素含量为84.73%,木素脱除率高达91.11%,分离纯化效果最佳。
Abstract:In order to upgrade the utilization value of corncob hydrolysis residue(CHR) and separate and purify cellulose and lignin from CHR, CHR was treated by two stages treatment of alkali H2O2 and NaClO2, using the cellulose content and the removal rate of lignin as evaluation index to optimize the treatment process. The results showed that the optimal conditions were H2O2 dosage of 0.8%, NaOH dosage of 3%, reaction temperature of 80℃, and NaClO2 concentration of 12 g/L, temperature of 70℃ for the two stages treatment. Under this conditions, the content of cellulose was 84.73% and the removal rate of lignin was 91.11%, it reached the best separation and purification efficiency.
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