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| Analysis of the Instability Characteristics of Microstickies in Papermaking White Water Treated with Cellulase |
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| DOI：10.11980/j.issn.0254-508X.2016.09.001 |
| Key Words:cellulase microstickies instability characteristics |
| Fund Project:广东省自然科学基金(2015A020213224)；江苏省重点实验室开放基金(201303)；广西区教育厅高校科研项目(YB2014014)。 |
| Author Name | Affiliation | | 唐亚男1 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640 | | 李 擘1,2,* | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640；2.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037 | | 王志伟3 | 3.广西大学轻工与食品工程学院，广西清洁化制浆造纸与污染控制重点实验室,广西南宁,530004 | | 武书彬1 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640 | | 刘道恒1 | 1.华南理工大学制浆造纸工程国家重点实验室,广东广州,510640 |
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| Abstract:By using a method combing laser, flow cytometric technology and fluorescent tracers, which can capture the microstickies’ information in micro level, the instability characteristics of the microstickies in white water from papermaking process using mixed office waste paper (MOP) as raw material and treated with cellulase were investigated in this study. The influences of the time, temperature and shear strength of the stirring action of cellulase treatment on the instability characteristics of the microstickies were studied by measuring the its size distribution, cationic demand and turbidity value of the white water system. The results showed that the microstickies with cellulase treatment might disperse or agglomerate depending on the dosage of the cellulase. Moreover, both of the dispersion or the agglomeration of these microstickies particles happened with the increase of the temperature. However, the aggregation tendency was superior to the dispersion. Therefore, the average size of these particles increased with temperature rise. Besides, the influence of the shear strength depended on the dosage of the cellulase applied in the white water. The microstickies particles dispersed obviously with the 40 U/L enzyme dosage. When the 80 U/L dosages was applied, these particles dispersed under the weak shear action and aggregated under the strong shearing. These characteristic changes of the microstickies affected by time and temperature kept the same variation tendency with the cationic demand of the white water system, and all of these characteristic changes could display indirectly by the turbidity value. |
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