کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5747771 1618919 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Treatment of highly toxic cardboard plant wastewater by a combination of electrocoagulation and electrooxidation processes
ترجمه فارسی عنوان
درمان با فاضلاب های گیاهی مقرون به صرفه با ترکیبی از فرایندهای الکتروکواگولاسیون و الکترو اکسیداسیون
کلمات کلیدی
فاضلاب مقوا، سمی بودن الکترو کلاژن، الکترو اکسیداسیون، الکترود الماس بر مبنای بور،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


- Cardboard wastewater was treated by electrocoagulation-electrooxidation.
- High turbidity (98.7%) and toxicity removal were achieved by electrocoagulation.
- A large amount of the organic content (> 82%) was removed by electrooxidation.
- The effects of the parameters were investigated.

The objective of this study was to investigate the removal efficiencies of the electrochemical treatment systems as an alternative for the treatment of cardboard plant wastewater (CPW). In accordance with this purpose, CPW was treated by electrocoagulation (EC) with Al electrodes and the effects of current density (CD), operating time (t), and initial pH (pHi) were investigated. The results showed that EC at optimum treatment conditions (CD: 7.5 mA/cm2, pHi: 7.0 and t: 60 min) have limited removal efficiencies for total organic carbon (TOC; 17.1%) and chemical oxygen demand (COD, 14.2%), on the contrary of turbidity (98.7%). Due to the low TOC and COD removal efficiencies, a secondary treatment was needed and the electrocoagulated effluent was subjected to electrooxidation (EO) by using a boron doped diamond (BDD) electrode for investigating the effect of CD, t, pHi and electrolyte concentration (Ce). Higher TOC (83.7%) and COD (82.9%) removal efficiencies were obtained by EO under the optimum treatment conditions (CD: 100 mA/cm2, pHi: 7.2, Ce: 5.0 g/L Na2SO4 and t: 180 min). In addition, a toxicity test was carried out to the raw and treated wastewater under the optimum operating conditions. This study demonstrated that the combination of EC and EO have a satisfactory potential for real industrial wastewater with a high organic content, suspended solids and toxicity.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 145, November 2017, Pages 184-192
نویسندگان
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