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| Controlling of the Content and Surface Viscosity of Stickies in Old Newspaper Pulp by Using Phospholipase |
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| DOI：10.11980/j.issn.0254-508X.2016.12.001 |
| Key Words:stickies phospholipase lipase effect comparison surface viscosity |
| Author Name | Affiliation | | 裴继诚1 | 1.天津科技大学天津市制浆造纸重点实验室,天津,300457 | | 申正会1 | 1.天津科技大学天津市制浆造纸重点实验室,天津,300457 | | 张方东1 | 1.天津科技大学天津市制浆造纸重点实验室,天津,300457 | | 卜 鑫1 | 1.天津科技大学天津市制浆造纸重点实验室,天津,300457 | | 周志敏1 | 1.天津科技大学天津市制浆造纸重点实验室,天津,300457 | | 郭宏明2 | 2.泰兴市一鸣生物制品有限公司,江苏泰兴,225433 |
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| Abstract:Phospholipase was used to control stickies in ONP pulp, its optimal processing condition was explored. Controlling effect of phospholipase on stickies content and surface viscosity was investigated and compared with that of lipase. Results showed that the optimal processing condition was temperature of 60℃, pH of 5.5, the dosage of phospholipase of 0.1% and the treatment time of 2 h. After the treatment under the condition, the removal rate of macrostickies was 70.2%, CD value, turbidity and particle size of the ONP pulp filtrate also reduced, indicating that the content of potential secondary stickies declined, and the surface viscosity of stickies declined remarkably. Controlling effects of phospholipase and lipase under respective optimal processing conditions were compared. Results showed that stickies content and surface viscosity dropped more significantly after the treatment of phospholipase, indicating that phospholipase has a better controlling effect． |
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