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Separation and Purification of Cellulose from Corncob Hydrolysis Residues
  
DOI：10.11980/j.issn.0254-508X.2016.06.008
Key Words:corncob hydrolysis residues  cellulose  lignin  separation  purification
Fund Project: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。
Author NameAffiliation
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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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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