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مشخصات کلی مقاله

عنوان مقاله:Performance enhancement and optimization of photocatalytic cyanide degradation in aqueous solution using Zn (II) and Fe (III) oxides as nanostructure supported on activated carbon

نویسنده: خانم پریسا اسکندری

تحت نظارت دکتر مهرداد فرهادیان عضو هیات علمی دانشکده مهندسی دانشگاه اصفهان

محل انتشار: Journal of Chemical Technology and Biotechnology - Impact Factor: 2.738 - Wiley

تاریخ پذیرش مقاله: 4 آوریل 2017

طرح ترجمه: ویرایش زبانی فارسی به انگلیسی 

چکیده مقاله ویرایش

BACKGROUND

Cyanide is a toxic compound used in gold mining, steel, electroplating and chemical industries. In this research, different mole ratios of Fe3+/ZnO supported on powder activated carbon (PAC) in the presence of H2O2 under UV irradiation were used to degrade cyanide contamination. The photocatalyst was characterized by XRD, XRF, FESEM, TEM and BET and response surface methodology was applied to assess the individual and interaction effects of several operating factors on cyanide degradation efficiency and to determine the optimization conditions.

RESULTS

The results indicated that the average particle size of catalyst ranged from 20 to 60 nm. pH had the largest effect on response and there was interaction between initial cyanide concentration and pH. Decreasing the initial cyanide concentration and pH, while increasing the catalyst dosage, hydrogen peroxide concentration and irradiation time improved the cyanide degradation efficiency. The experimental result of cyanide degradation efficiency under optimum conditions ([CN]− = 250 mg L−1, photocatalyst = 1.4 g L−1, irradiation time = 180 min, pH=10, mole ratio of Fe3+/ZnO=6% and [H2O2] = 300 mg L−1) was about 98%. Photocatalytic activity was maintained even after seven successive cycles.

CONCLUSION

The synthesized reusable high activity nanostructure photocatalyst can be considered an applicable and environmentally friendly catalyst for the decontamination of cyanide-polluted water. © 2017 Society of Chemical Industry

 

دریافت مقاله از سایت ژورنال

درباره نویسنده ها

دکتر مهرداد فرهادیان

  • دکتری,مهندسی فرآیند ,دانشگاه بلیز پاسکال,فرانسه
  • عضو هیأت علمی گروه مهندسی شیمی دانشگاه اصفهان

پریسا اسکندری

  • کارشناس ارشد مهندسی شیمی - دانشگاه اصفهان

درباره ژورنال

Impact Factor: 2.783

Journal of Chemical Technology and Biotechnology(JCTB) is an international, inter-disciplinary peer-reviewed journal concerned with the application of scientific discoveries and advancements in chemical and biological technology that aim towards economically and environmentally sustainable industrial processes.

 

 

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