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Study on Feasibility of the Biodegradability Increase of PolyvinylAlcohol Wastewater by TiO2 Photocatalysis(PDF)


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Study on Feasibility of the Biodegradability Increase of PolyvinylAlcohol Wastewater by TiO2 Photocatalysis
Zhang Yong1Qin Yang2Cheng Panpan1Ma Chenhuang1Zhang Xianqiu1
(1.School of Environment,Nanjing Normal University,Nanjing 210023,China)(2.CNPC Northeast Refining and Chemical Engineering Co.Ltd Jilin Design Institute,Jilin 132011,China)
polyvinyl alcoholphotocatalysiswastewaterbiodegradability
The feasibility of the biodegradability increase of polyvinyl alcohol(PVA)wastewater by TiO2 photocatalysis is studied in this article. The study shows that the optimum adding amount of the catalyst is related to the illumination time,such as amount of 1.38g/L to illumination time of 2 hours correspondence. The optimal range of pH value which has a great effect on removal efficiency is from 5 to 7. The conjugated bond is produced in PVA simulated wastewater during the light catalyzed reaction,and the B/C ratio increases correspondingly,which can reach 0.46 after 2 hours. The biodegradability has met the demands of biological treatment,which shows that reasonable photocatalytic time should be controlled within 2 hours during the integrated process of photocatalysis biological treatment.


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Last Update: 2017-06-30