کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
576589 | 1453081 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Electrochemical treatment of reverse osmosis concentrate on boron-doped electrodes in undivided and divided cell configurations
ترجمه فارسی عنوان
درمان الکتروشیمیایی اسمز معکوس کنسانتره بر روی الکترودهای دوتایی بوئر در تنظیمات جدا شده سلول و تقسیم شده
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
چکیده انگلیسی
An undivided electrolytic cell may offer lower electrochlorination through reduction of chlorine/hypochlorite at the cathode. This study investigated the performance of electrooxidation of reverse osmosis concentrate using boron-doped diamond electrodes in membrane-divided and undivided cells. In both cell configurations, similar extents of chemical oxygen demand and dissolved organic carbon removal were obtained. Continuous formation of chlorinated organic compounds was observed regardless of the membrane presence. However, halogenation of the organic matter did not result in a corresponding increase in toxicity (Vibrio fischeri bioassay performed on extracted samples), with toxicity decreasing slightly until 10 Ah Lâ1, and generally remaining near the initial baseline-toxicity equivalent concentration (TEQ) of the raw concentrate (i.e., â¼2 mg Lâ1). The exception was a high range toxicity measure in the undivided cell (i.e., TEQ = 11 mg Lâ1 at 2.4 Ah Lâ1), which rapidly decreased to 4 mg Lâ1. The discrepancy between the halogenated organic matter and toxicity patterns may be a consequence of volatile and/or polar halogenated by-products formed in oxidation by OH electrogenerated at the anode. The undivided cell exhibited lower energy compared to the divided cell, 0.25 kWh gCODâ1 and 0.34 kWh gCODâ1, respectively, yet it did not demonstrate any improvement regarding by-products formation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 279, 30 August 2014, Pages 111-116
Journal: Journal of Hazardous Materials - Volume 279, 30 August 2014, Pages 111-116
نویسندگان
Arseto Y. Bagastyo, Damien J. Batstone, Ina Kristiana, Beate I. Escher, Cynthia Joll, Jelena Radjenovic,