کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4763058 | 1422955 | 2017 | 41 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation on decolorization of biologically pretreated cellulosic ethanol wastewater by electrochemical method
ترجمه فارسی عنوان
بررسی میزان رنگ زدایی فاضلاب اتانول سلولزی اولیه پس از زایمان با استفاده از روش الکتروشیمیایی
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کلمات کلیدی
فاضلاب سلولزی اتانول، پساب زیستی درمان شده، رنگ زدایی، اکسیداسیون الکتروشیمیایی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
The biologically pretreated cellulosic ethanol wastewater poses a serious environmental concern because of its refractory and color compounds. The decolorization of electrochemical oxidation using Sb doped Ti/SnO2 electrode for advanced treatment of cellulosic ethanol wastewater under different current density (5-30 mA·cmâ2), initial pH (3-8.9) and supporting electrolyte (0-0.25 M NaCl) was investigated in this study. Complete decolorization, 8.5% chemical oxygen demand (COD) and 69.1% dissolved organic carbon removal efficiencies were achieved under the optimal conditions (20 mA·cmâ2, pH 5 and supporting electrolyte of 0.1 M NaCl) after 150 min. The energy consumption required to meet National Discharge Standard (GB 27631-2011) is 93.8 kWh kg CODâ1. Further investigation revealed that hydroxyl radicals played a primary role in the degradation of organic contaminants, while active chlorine formed from chloride oxidation played a less important role. Direct anodic oxidation and indirect reaction via peroxodisulfate generated from sulfate oxidation could be negligible. The formation of chlorination by-products appeared to be low since the final total Trihalomethanes concentration detected was 263 µg Lâ1, with the detection of chloroform as the main Trihalomethanes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 323, 1 September 2017, Pages 455-464
Journal: Chemical Engineering Journal - Volume 323, 1 September 2017, Pages 455-464
نویسندگان
Lili Shan, Junfeng Liu, John J. Ambuchi, Yanling Yu, Linlin Huang, Yujie Feng,