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| Study on Characteristics of OCC Papermaking Sludge |
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| DOI： |
| Key Words:waste paper sludge elements chemical properties pyrolysis characteristics sludge calorific value morphology |
| Fund Project:陕西省科技统筹创新工程计划课题(2011KTZB03-03-01)；教育厅科研计划项目14JK1097；国家863科技计划子项目（2011AA06A101）；陕西科技大学博士科研启动基金(BJ14-09)。 |
| Author Name | Affiliation | | 罗 清 | 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 | | 刘 琳* | 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 | | 张安龙 | 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 | | 景立明 | 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 | | 张 丹 | 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 |
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| Abstract:The characteristics of OCC papermaking sludge were analyzed, including content of organic matter, cellulose, hemicellulose, lignin, protein, and air dried basis, ash content, volatile points, fixed carbon content. At the same time, the sludge morphology, elemental composition, structure, composition, pyrolysis, sludge calorific value were studied. Results showed that the ash content, fibre content, hemicellulose and lignin content of OCC papermaking sludge were 58.84%, 12.9%, 5.39% and 3.2% respectively. The particle median diameter of wet sludge was about 35.31 μm, the calorific value was 14.31 MJ/kg. No toxic heavy metal elements were detected, and the content of metal ions was not exceeded. SEM results showed that the structure of OCC papermaking sludge was compact, combining organic fiber and mineral filler together. Infrared spectral analysis showed OCC papermaking sludge contained some inherent bonds existing in lignin, cellulose, hemiellulose, protein, such as carbonyl in alcohols and phenols, —NH in amine and imine, C—H and CC in aliphatic and carboxylic acid compound, as well as —C—C benzene. TGA results showed that, organic matter of OCC papermaking sludge decomposed in the temperture of 200~450℃; and the inorganic mineral filler decomposed in the temperture of 450~800℃, and peak thermal decomposition appeared at 351.9℃ and 655℃. |
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