کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4411966 1307616 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surfactant properties and tetrachloroethene (PCE) solubilisation ability of humic acid-like substances extracted from maize plant and from organic wastes: A comparative study
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Surfactant properties and tetrachloroethene (PCE) solubilisation ability of humic acid-like substances extracted from maize plant and from organic wastes: A comparative study
چکیده انگلیسی
Maize-HA-like substance solubilised PCE at the rate of 0.05 g of PCE for each gram of maize-HA-like substance, which was 3.6-9.6 times lower than the data obtained in our earlier work using HA extracted from organic wastes, but was higher than that obtained with commercial HA from leonardite. Taking into consideration the two-site model of solubilisation of PCE in surfactant (i.e., solute partitioning into the micellar hydrophobic core and dissolution and/or binding into the hydrophilic non-ionic shell) and macromolecular composition of HA-like substance, the non-ionic hydrophile-alkyl lipophile balance was expected to control PCE solubilisation as the good multiple linear regression indicated: log Kdom = −1.37 + 0.062 alkyl-C +0.055 O-alkyl-C (R2 = 0.93, P < 0.05, n = 6), where log Kdom represents the micelle-water partitioning of PCE (mL g−1) and alkyl-C and O-alkyl-C represent the content of these two kinds of C detected by CP MAS 13C NMR (as % of the total C).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 78, Issue 8, February 2010, Pages 1017-1022
نویسندگان
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