کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
576571 1453082 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nonionic surfactant greatly enhances the reductive debromination of polybrominated diphenyl ethers by nanoscale zero-valent iron: Mechanism and kinetics
ترجمه فارسی عنوان
سورفکتانت غیر معدنی به طور قابل ملاحظه ای باعث کاهش نفوذپذیری کاهش الیاف دیفنیل پلیبروموم شده توسط آهن نانو درجه صفر می شود: مکانیسم و ​​سینتیک
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
چکیده انگلیسی
Nanoscale zero-valent iron (nZVI) has been considered as an effective agent for reductive debromination of polybrominated diphenyl ethers (PBDEs). But the high lipophilicity of PBDEs will hinder their debromination owing to the inefficient contact of PBDEs with nZVI. In this study, different ionic forms of surfactants were investigated aiming to promote PBDE debromination, and the beneficial effects of surfactant were found to be: nonionic polyethylene glycol octylphenol ether (Triton X-100, TX) > cationic cetylpyridinium chloride (CPC) > anionic sodium dodecyl benzenesulfonate (SDDBS). Except for with SDDBS, the promotion effect for PBDE debromination was positively related to the surfactant concentrations until a critical micelle concentration (CMC). The debromination process of octa-BDE and its intermediates could be described as a consecutive reaction. The corresponding rate constants (k) for the debromination of parent octa-BDE (including nona- to hepta-BDEs), the intermediates hexa-, penta-, and tetra-BDEs are 1.24 × 10−1 h−1, 8.97 × 10−2 h−1, 6.50 × 10−2 h−1 and 2.37 × 10−3 h−1, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 278, 15 August 2014, Pages 592-596
نویسندگان
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