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Journal of Advances in Environmental Health Research، جلد ۳، شماره ۳، صفحات ۱۹۶-۰
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Simultaneous degradation and adsorption of cyanide using modified fly ASH and TiO2/UV
چکیده انگلیسی مقاله 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 TiO 2 /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), TiO 2 /UV, and their combination (MFA-TiO 2 /UV) was 76.1%, 81%, and 86.6%, respectively. Optimal conditions for the combination of activated fly ash AFA-TiO 2 /UV were contact time of 6 hours, temperature of 100 °C, and AFA: TiO 2 ratio (w/w) of 1:1. Under these conditions, a maximum removal rate of 92.4% was obtained when 1.2 g of MFA/TiO 2 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-TiO 2 /UV can be utilized to improve the removal of cyanide from wastewater.
کلیدواژه‌های انگلیسی مقاله Adsorption,MFA-TiO2/UV,Cyanide,Photocatalytic Degradation
نویسندگان مقاله شیما رضایی | shima rezaei
research center for environmental health and school of public health, kurdistan university of medical sciences, sanandaj, iran


هادی رضایی | hadi rezaei
sanandaj health center and department of environmental health engineering, school of public health, kurdistan university of medical sciences, sanandaj, iran


مقداد پیرصاحب | meghdad pirsaheb
department of environmental health engineering, school of health, kermanshah university of medical sciences, kermanshah, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمانشاه (Kermanshah university of medical sciences)

صایب احمدی | saeb ahmadi
department of chemical engineering, school of chemical engineering, tarbiat modares university, tehran, iran

سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

هوشیار حسینی | hooshyar hossini
department of environmental health engineering, school of health, kermanshah university of medical sciences, kermanshah, iran

سازمان اصلی تایید شده: دانشگاه علوم پزشکی کرمانشاه (Kermanshah university of medical sciences)

نشانی اینترنتی http://jaehr.muk.ac.ir/index.php/jaehr/article/view/249
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زبان مقاله منتشر شده en
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نوع مقاله منتشر شده Original Article(s)
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