کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4416214 1307772 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sorption and reduction of tetrachloroethylene with zero valent iron and amphiphilic molecules
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Sorption and reduction of tetrachloroethylene with zero valent iron and amphiphilic molecules
چکیده انگلیسی

Effects of surfactants and natural organic matter (NOM) on the sorption and reduction of tetrachloroethylene (PCE) with zero valent iron (ZVI) were examined in this study. PCE reduction by ZVI depended on the ionic type of the surfactants. The removal of PCE and production of TCE with non-ionic Triton X-100 and cationic hexadecyltrimethyl-ammonium (HDTMA) at one-half and two times the critical micelle concentration (CMC) were 1.2–1.8 times higher than without surfactants because of the enhanced PCE partitioning and surface concentration by the sorbed surfactants. When anionic sodium dodecyl benzene sulfonate (SDDBS) at one-half and two times CMC and NOM at 20 mg l−1 and 50 mg l−1 concentrations were used, the removal of PCE doubled and TCE production decreased. In the presence of SDDBS, TCE production by ZVI was lower than with HDTMA and Triton X-100 while PCE removal was higher than with the other surfactants.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 64, Issue 6, August 2006, Pages 1047–1052
نویسندگان
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