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Study on Surface Modification of Paper Sludge and Its Mechanism
  
DOI：10.11980/j.issn.0254-508X.2014.01.004
Key Words:paper sludge  surface modification  stearic acid  activation index
Fund Project:陕西省重点实验室科研项目（12JS021）；陕西科技大学研究生创新基金。
Author NameAffiliation
张　茹1 1.陕西科技大学轻工与能源学院，陕西省造纸技术及特种纸品开发重点实验室，陕西西安，710021 
韩　卿1 1.陕西科技大学轻工与能源学院，陕西省造纸技术及特种纸品开发重点实验室，陕西西安，710021 
钱威威1 1.陕西科技大学轻工与能源学院，陕西省造纸技术及特种纸品开发重点实验室，陕西西安，710021 
李　斯1 1.陕西科技大学轻工与能源学院，陕西省造纸技术及特种纸品开发重点实验室，陕西西安，710021 
侯彤梅2 2.宁海县宁兴纸业有限公司，浙江宁波，315614 
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Abstract:Nine kinds of modification reagent were used to perform surface modification of paper sludge. Stearic acid which had an excellent modification effect on paper sludge was screened out by analyzing the activation index of modified products. The optimum modification parameters were decided by orthogonal and single factor experiments. The mechanism of stearic acid modifying paper sludge was studied by FT-IR. The results showed that: when stearic acid dosage (to oven dry weight of the sludge) was 4.0%, the sludge suspension concentration was 8.0%, reaction temperature was 60~70℃ and reaction time was 20 min, the activation index of modified sludge reached to 99%; stearic acid acted on the surface of paper sludge in both physical adsorption and chemical combination.
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