کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4757283 | 1361632 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Applicability of electrochemical oxidation using diamond anodes to the treatment of a sulfonylurea herbicide
ترجمه فارسی عنوان
کاربرد اکسیداسیون الکتروشیمیایی با استفاده از آندز الماس برای درمان یک علف کش سولفونیل اوره
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
چکیده انگلیسی
In this work, the electrolysis of chlorsulfuron (ClSF, a sulfonylurea herbicide) with conductive-diamond anodes is studied. The influences of the nature of the supporting electrolyte (0.05 mol dmâ3 NaCl and Na2SO4), the applied current density (30 and 100 mA cmâ2) and the initial herbicide concentration (20,50 ad 100 mg dmâ3) have been evaluated. Total mineralization of the herbicide was attained regardless of the supporting electrolyte medium used, although electrolyte clearly influenced on the efficiency and rate of the oxidation process. Likewise, the process was found to be more efficient at low current densities. Results point out the importance of mediated electrochemical processes in the removal of ClSF. This influence was confirmed by additional tests in which the electrolysis was combined with UV light or ultrasound irradiation: the use of UV irradiation results in a less efficient process, while US improves importantly the rate of the mineralization as compared to the single electrolytic process. The strong oxidation conditions of electrolysis leads to the formation of reaction intermediates (2-amino-4-methoxy-6-methyl-1,3,5-Triazine, 2-chlorobenzenesulfonamida and oxalic acid) in agreement with the mechanisms proposed in the literature for other AOPs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 280, Part 1, 1 February 2017, Pages 192-198
Journal: Catalysis Today - Volume 280, Part 1, 1 February 2017, Pages 192-198
نویسندگان
F. Souza, S. Quijorna, M.R.V. Lanza, C. Sáez, P. Cañizares, M.A. Rodrigo,