کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10145196 | 1646359 | 2019 | 40 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Activation of peroxymonosulfate by sludge-derived biochar for the degradation of triclosan in water and wastewater
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
In this study, a sludge-derived biochar (SBC) was prepared, characterized and applied to activate peroxymonosulfate (PMS) for the degradation of triclosan (TCS) in water and wastewater. The results showed that SBC had porous structure with specific surface area of 157.4â¯m2â¯gâ1. The optimal conditions for TCS degradation were examined as follows: pH 7.2, biochar dosage of 1.0â¯g/L and PMS concentration of 0.8â¯mM at 25â¯Â°C. The removal efficiency of total organic carbon (TOC) reached 32.5% within 240â¯min under optimal conditions. Hydroxyl radicals, sulfate radicals and singlet oxygen contributed to TCS degradation. Dechlorination and hydroxylation were the main pathway of TCS degradation. Based on the intermediate products detected during the TCS degradation, the degradation pathway of TCS was tentatively proposed. This study demonstrated that SBC could be an effective activator of PMS for the degradation of toxic organic pollutants in water and wastewater.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 356, 15 January 2019, Pages 350-358
Journal: Chemical Engineering Journal - Volume 356, 15 January 2019, Pages 350-358
نویسندگان
Shizong Wang, Jianlong Wang,