کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
585247 | 1453188 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Molecular size distribution of dissolved organic matter in water of the Pearl River and trihalomethane formation characteristics with chlorine and chlorine dioxide treatments
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کلمات کلیدی
RACTrihalomethanesTHMFPAOCDBPsSUVA254kDaGACTHMsDOCTOCDrinking water - آب آشامیدنیReverse Osmosis - اسمز معکوسUltrafiltration - اولترافیلتراسیونSpecific ultraviolet absorbance - جذب خاص اشعه ماوراء بنفشChlorine dioxide - دیاکسید کلر، کلرین دی اکسایدDisinfection by-products - ضدعفونی کننده های جانبیDOM - قضاوتDissolved organic matter - ماده آلی حل شدهDissolved organic matter (DOM) - ماده آلی حل شده (DOM)Disinfection by-products (DBPs) - مواد ضدعفونی کننده (DBP)trihalomethane formation potential - پتانسیل تشکیل trihalomethaneDissolved organic carbon - کربن آلی حل شدهAssimilable organic carbon - کربن آلی قابل جذبTotal organic carbon - کل کربن آلیChlorine - کلرینkilo-dalton - کیلو دالتون
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
River water sample was collected from Guangzhou section of the Pearl River to investigate soluble organic fractions and formation of trihalomethane (THMs) after chlorine and chlorine dioxide treatments. The water sample was passed through Amicon® YC-05, YM-1, YM-3, YM-10, YM-30, YM-100 and ZM-500 series membranes after a pre-treatment. The molecular weight distribution and the specific ultra-violet absorbance (SUVA254) of each fraction obtained from membrane were analyzed, and these fractions were further disinfected with chlorine and chlorine dioxide. The results showed that reverse osmosis (RO) fraction contained mainly dissolved organic matter (DOM) from the water sample, suggesting that the water has been highly contaminated by anthropogenic activities. Meanwhile, the THMs concentration and SUVA254 increased gradually as the molecular weight of the obtained fractions reduced, indicating that the low molecular weight DOM was the major THMs precursor in the disinfection process with chlorine and chlorine dioxide. The results suggest that THMs in source water of Pearl River could be effectively reduced when pollution of human activity is greatly controlled. Between the two disinfection processes tested, chlorine dioxide produced less THMs than chlorine in this study.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 134, Issues 1â3, 30 June 2006, Pages 60-66
Journal: Journal of Hazardous Materials - Volume 134, Issues 1â3, 30 June 2006, Pages 60-66
نویسندگان
Zhen-Ye Zhao, Ji-Dong Gu, Xiao-Jun Fan, Hai-Bo Li,