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تجزیه رنگ بنفش 16 بازی توسط فرایند فعال شده با الکتریسیته از محلول های آبی و ارزیابی سمیت با استفاده از میکروارگانیسم ها: تعیین محصولات جانبی، سینتیک واکنش و بهینه سازی با استفاده از طرح باکس - بنکن

حسنی, کمال ، مرادی, مینا ، مختاری, سیداحمد ، صادقی, هادی ، درگاهی, عبداله ، وثوقی, مهدی (1399) تجزیه رنگ بنفش 16 بازی توسط فرایند فعال شده با الکتریسیته از محلول های آبی و ارزیابی سمیت با استفاده از میکروارگانیسم ها: تعیین محصولات جانبی، سینتیک واکنش و بهینه سازی با استفاده از طرح باکس - بنکن. International Journal of Chemical Reactor Engineering ــ 19 (3). ص.ص.261-275. شاپا 2194-5748

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عنوان انگليسی

Degradation of basic violet 16 dye by electro-activated persulfate process from aqueous solutions and toxicity assessment using microorganisms: Determination of by-products, reaction kinetic and optimization using Box-Behnken design

خلاصه انگلیسی

This study was performed to determine the efficiency of the electro/persulfate process to remove basic violet 16 (BV16) dye and COD from aqueous solutions. The present study was experimentally performed on a laboratory scale. The effect of pH on the process was investigated independently, and after performing the experiments, the effect of voltage (volts), the dose of persulfate (g/L), initial concentration of BV16 dye, and electrolysis time was investigated with the model presented by Box Behnken design, and optimal conditions for BV16 dye removal was obtained. Under optimal conditions, COD removal efficiency and toxicity changes during the process were calculated, and the effect of distance between electrodes and surface of electrodes on process efficiency was investigated. By-products of oxidative degradation were determined with LS-MS. The amount of electrical energy consumed by the process was investigated by voltage changes and then the kinetics of the process was investigated by a pseudo-first-order model. The results showed that the electro/persulfate process in optimal conditions including pH of 5, a voltage of 11.43 V, persulfate dose of 0.09 g/L, initial BV16 concentration of 45 mg/L, and electrolysis time of 48.5 min could provide BV16 dye removal efficiency of 95% and COD removal efficiency of 57.14%. Findings of electrical energy consumption showed that with increasing voltage, the efficiency of the process increased, but the amount of energy consumption also increased. Under optimal conditions, increasing distance between the electrodes was led to a decrease in removal efficiency, but the removal efficiency increased with the increasing surface of the electrodes. Based on the kinetic results, the electro/persulfate process followed pseudofirst-order kinetics with R2 = 0.9956. The present study showed that the electro/persulfate process as a useful technique has high efficiency in removing BV16 dye and its toxicity from aqueous solutions and can be effective and useful in removing the COD of solution.

نوع سند :مقاله
زبان سند : انگلیسی
نویسنده اول :کمال حسنی
نویسنده :مینا مرادی
نویسنده :سیداحمد مختاری
نویسنده :هادی صادقی
نویسنده مسئول :عبداله درگاهی
نویسنده مسئول :مهدی وثوقی
ضریب تاثیر و نمایه مجلات:IF: 1.152 Indexed in: ISI, Scopus
کلیدواژه ها (انگلیسی):Basic violet 16 dye; Box–Behnken; by products;electro-persulfate; kinetics; toxicity
موضوعات :WA بهداشت عمومي > WA 30 بهداشت محيط
WA بهداشت عمومي > WA 30 بهداشت محيط
بخش های دانشگاهی :دانشکده بهداشت > گروه بهداشت محیط
کد شناسایی :14178
ارائه شده توسط : دکتر سید احمد مختاری
ارائه شده در تاریخ :04 اردبهشت 1400 08:02
آخرین تغییر :04 اردبهشت 1400 08:02

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