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[Degradation of azo dye acid orange 7(AO7) by heat, ZVI and heat/ZVI activated persulfate].
Huan Jing Ke Xue. 2011 Oct; 32(10):2949-55.HJ

Abstract

Effects of temperatures, PS concentrations and ZVI dosages on AO7 decomposition were investigated in sole heat and ZVI activating systems. The degradation results of two systems were compared for selecting a better activating way for AO7 degradation and finally the two activating ways were combined for getting the optimal AO7 degradation efficiency. The degradation of AO7 by Heat/PS systems followed pseudo first-order kinetics. The reaction rates increased with increasing reaction temperatures (elevated from room temperature to 90 degrees C) and also increased when initial PS concentrations varied from 1 to 12 mmol x L(-1). For ZVI activating systems (ZVI/PS systems), the degradation rate of AO7 was the highest when ZVI dose was 0.2 g, and it reached to 95.6% within 90 min. Comparing ZVI/PS systems with Heat/PS systems, the results showed that the ZVI activation was a more effective way to activate PS than the heat activation for AO7 degradation. AO7 degradation processes by ZVI/heat/PS systems were two-stage pseudo first-order kinetic processes, and the combining of two activating ways significantly increased the reaction rates. By the addition of ZVI to the Heat/PS system, the apparent activation energy E(a) of AO7 degradation reduced from the original 130.26 kJ x mol(-1) to 27.70 kJ x mol(-1).

Authors+Show Affiliations

College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China. 1010439791@qq.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

chi

PubMed ID

22279907

Citation

Zhang, Cheng, et al. "[Degradation of Azo Dye Acid Orange 7(AO7) By Heat, ZVI and heat/ZVI Activated Persulfate]." Huan Jing Ke Xue= Huanjing Kexue, vol. 32, no. 10, 2011, pp. 2949-55.
Zhang C, Wan JQ, Ma YW, et al. [Degradation of azo dye acid orange 7(AO7) by heat, ZVI and heat/ZVI activated persulfate]. Huan Jing Ke Xue. 2011;32(10):2949-55.
Zhang, C., Wan, J. Q., Ma, Y. W., Wang, Y., & Huang, M. Z. (2011). [Degradation of azo dye acid orange 7(AO7) by heat, ZVI and heat/ZVI activated persulfate]. Huan Jing Ke Xue= Huanjing Kexue, 32(10), 2949-55.
Zhang C, et al. [Degradation of Azo Dye Acid Orange 7(AO7) By Heat, ZVI and heat/ZVI Activated Persulfate]. Huan Jing Ke Xue. 2011;32(10):2949-55. PubMed PMID: 22279907.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Degradation of azo dye acid orange 7(AO7) by heat, ZVI and heat/ZVI activated persulfate]. AU - Zhang,Cheng, AU - Wan,Jin-Quan, AU - Ma,Yong-Wen, AU - Wang,Yan, AU - Huang,Ming-Zhi, PY - 2012/1/28/entrez PY - 2012/1/28/pubmed PY - 2013/3/15/medline SP - 2949 EP - 55 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 32 IS - 10 N2 - Effects of temperatures, PS concentrations and ZVI dosages on AO7 decomposition were investigated in sole heat and ZVI activating systems. The degradation results of two systems were compared for selecting a better activating way for AO7 degradation and finally the two activating ways were combined for getting the optimal AO7 degradation efficiency. The degradation of AO7 by Heat/PS systems followed pseudo first-order kinetics. The reaction rates increased with increasing reaction temperatures (elevated from room temperature to 90 degrees C) and also increased when initial PS concentrations varied from 1 to 12 mmol x L(-1). For ZVI activating systems (ZVI/PS systems), the degradation rate of AO7 was the highest when ZVI dose was 0.2 g, and it reached to 95.6% within 90 min. Comparing ZVI/PS systems with Heat/PS systems, the results showed that the ZVI activation was a more effective way to activate PS than the heat activation for AO7 degradation. AO7 degradation processes by ZVI/heat/PS systems were two-stage pseudo first-order kinetic processes, and the combining of two activating ways significantly increased the reaction rates. By the addition of ZVI to the Heat/PS system, the apparent activation energy E(a) of AO7 degradation reduced from the original 130.26 kJ x mol(-1) to 27.70 kJ x mol(-1). SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/22279907/[Degradation_of_azo_dye_acid_orange_7_AO7__by_heat_ZVI_and_heat/ZVI_activated_persulfate]_ L2 - https://medlineplus.gov/iron.html DB - PRIME DP - Unbound Medicine ER -