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Title

Simultaneous degradation and adsorption of cyanide using modified fly Ash and TiO2/UV

مجله پیشرفت در تحقیقات بهداشت محیط، دوره: 3، شماره: 3
Year: 1394
COI: JR_JAEHR-3-3_007
Language: EnglishView: 327
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Authors

Shima Rezaei - Research Center for Environmental Health AND School of Public Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
Hadi Rezaei - Sanandaj Health Center AND Department of Environmental Health Engineering, School of Public Health, Kurdistan University of Medical Sciences, Sanandaj, Iran
Meghdad Pirsaheb - Department of Environmental Health Engineering, School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran
Saeb Ahmadi - Department of Chemical Engineering, School of Chemical Engineering, Tarbiat Modares University, Tehran, Iran

Abstract:

Due to the present water shortage and environmental problems associated with industrial effluent, investigation of novel treatment technologies is an essential approach. Being a highly toxic chemical of asphyxiating characteristics, cyanide is seen as a major environmental pollutant in a wide range of industrial effluents. The present study aimed to address the adsorption and photocatalytic degradation of cyanide using activated fly ash and TiO2/UV. To investigate the removal efficiency of cyanide, two sets of experiments were designed. First, cyanide was absorbed by activated fly ash and degraded via a photocatalytic process, individually. Second, simultaneous adsorption and degradation was examined. The removal efficiency of cyanide by modified fly ash (MFA), TiO2/UV, and their combination (MFA-TiO2/UV) was 76.1%, 81%, and 86.6%, respectively. Optimal conditions for the combination of activated fly ash AFA-TiO2/UV were contact time of 6 hours, temperature of 100 °C, and AFA: TiO2 ratio (w/w) of 1:1. Under these conditions, a maximum removal rate of 92.4% was obtained when 1.2 g of MFA/TiO2 was used with a pH value of 3 in the presence of UV light. Based on the results of cyanide removal, it can be concluded that the combination of adsorption and photocatalytic degradation with MFA-TiO2/UV can be utilized to improve the removal of cyanide from wastewater.

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This Paper COI Code is JR_JAEHR-3-3_007. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/753821/

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Rezaei, Shima and Rezaei, Hadi and Pirsaheb, Meghdad and Ahmadi, Saeb,1394,Simultaneous degradation and adsorption of cyanide using modified fly Ash and TiO2/UV,https://civilica.com/doc/753821

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Type of center: علوم پزشکی
Paper count: 904
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