DocumentCode
526933
Title
Notice of Retraction
Study of CPAM/ bentonite microparticle retention system on reducing pollution load of papermaking white water
Author
Sha Li-zheng ; Zhao Hui-fang
Author_Institution
Sch. of Light Ind., Zhejiang Univ. of Sci. & Technol., Hangzhou, China
Volume
2
fYear
2010
fDate
17-18 July 2010
Firstpage
223
Lastpage
226
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
In order to investigate the effects of CPAM/bentonite microparticle retention system on reducing pollution load of papermaking white water, the dynamic drainage jar was used to simulate the wet end of low grammage fresh-keeping case board production. The turbidity and CODcr of the filtrate were measured to express the pollution load of white water. Results showed that the turbidity and CODcr of white water in CPAM/bentonite microparticle retention system were similar to that in CPAM monocomponent system when CPAM dosage was less than 0.02%, and that the CPAM/bentonite microparticle retention system had no significant retention effects unless the dosage of CPAM was larger than 0.02%. The turbidity and CODcr of white water in CPAM/bentonite microparticle retention system reached the minimum value when the dosage of CPAM and bentonite were 0.04% and 0.2%, respectively. The stir speed should be controlled below 750 rpm in the case of CPAM and bentonite were added into pulp suspension, otherwise, the formed flocs could be destroyed, which resulting in higher turbidity and CODcr of white water.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
In order to investigate the effects of CPAM/bentonite microparticle retention system on reducing pollution load of papermaking white water, the dynamic drainage jar was used to simulate the wet end of low grammage fresh-keeping case board production. The turbidity and CODcr of the filtrate were measured to express the pollution load of white water. Results showed that the turbidity and CODcr of white water in CPAM/bentonite microparticle retention system were similar to that in CPAM monocomponent system when CPAM dosage was less than 0.02%, and that the CPAM/bentonite microparticle retention system had no significant retention effects unless the dosage of CPAM was larger than 0.02%. The turbidity and CODcr of white water in CPAM/bentonite microparticle retention system reached the minimum value when the dosage of CPAM and bentonite were 0.04% and 0.2%, respectively. The stir speed should be controlled below 750 rpm in the case of CPAM and bentonite were added into pulp suspension, otherwise, the formed flocs could be destroyed, which resulting in higher turbidity and CODcr of white water.
Keywords
flocculation; industrial waste; paper industry; wastewater; water pollution control; CODcr; CPAM; bentonite microparticle retention system; chemical oxygen demand; flocs; papermaking white water; pollution reduction; pulp suspension; turbidity; water pollution; Pollution measurement; Water pollution; CODcr; CPAM; bentonite; microparticle retention system; turbidity;
fLanguage
English
Publisher
ieee
Conference_Titel
Environmental Science and Information Application Technology (ESIAT), 2010 International Conference on
Conference_Location
Wuhan
Print_ISBN
978-1-4244-7387-8
Type
conf
DOI
10.1109/ESIAT.2010.5567229
Filename
5567229
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