Ozonation of Aqueous Reactive Black 5 Catalyzed by Modified PyC

doi:10.11908/j.issn.0253-374x.2015.11.018

Home > Archive>Volume 43, Issue 11, 2015 >1728-1734. DOI:10.11908/j.issn.0253-374x.2015.11.018

Ozonation of Aqueous Reactive Black 5 Catalyzed by Modified PyC
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                        10.11908/j.issn.0253-374x.2015.11.018
                    
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                        HE HongpingHE Hongping
State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
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WU DeliWU Deli
State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
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MA LumingMA Luming
State Key Laboratory of Pollution Control and Resources Reuse, Tongji University, Shanghai 200092, China
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LV YapingLV Yaping
Praxair (China) Investment Co. Ltd., Shanghai 201204, China
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Abstract:

Pyrite Cinder（PyC）supported Ce by optimized incipient wetness impregnation was prepared to enhance the catalytic activity of PyC in ozonation. TOC removal efficiency of O3/Ce PyC was kept at about 80 % in the pH range of 3 to 10 in the degradation of aqueous Reactive Black 5（RB5）which was quiet different from the case of traditional ozonation. The kinetic analysis showed that the TOC removal rate constant of O3/Ce PyC was 7.22 times higher than that of O3 alone in the degradation of RB5. Moreover, the fact that more than 75 % of TOC removal efficiency while the catalyst was reused for the third time indicated stable catalytic activity of Ce PyC. Surface hydroxyl groups were the key to catalytic activity of PyC while supported Ce enhanced its catalytic activity for its effectiveness in decomposing O3 into HO·. Ce PyC showed its potential application value in wastewater treatment considering the low cost.

Key words:PyC; Ce PyC; catalytic ozonation; dyeing wastewater

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HE Hongping, WU Deli, MA Luming, LV Yaping. Ozonation of Aqueous Reactive Black 5 Catalyzed by Modified PyC[J].同济大学学报(自然科学版),2015,43(11):1728~1734

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Received:October 23,2014
Revised:July 31,2015
Adopted:March 18,2015
Online: November 16,2015
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