کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5757792 1412735 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Characterization of phosphorus sorption on the sediments of Yangtze River Estuary and its adjacent areas
ترجمه فارسی عنوان
تعیین جذب فسفر در رسوبات رودخانه یانگ تسه و مناطق مجاور آن
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات اقیانوس شناسی
چکیده انگلیسی
This paper studied the kinetics, isotherm and thermodynamics of phosphorus sorption onto the sediments of the Yangtze River estuary and its adjacent waters, as well as the sediments' compositions and physicochemical properties. The process could be described well by a two-compartment first order equation. The sorbed phosphorus mainly consisted of Ex-P and Fe-P, with Ex-P being the dominant. The equilibrium isotherms could be fitted well with a modified Langmuir equation. The calculations of the thermodynamic parameters indicated that the process was spontaneous and exothermic. The CEC and the fractions of clay, calcite and organic matter were correlated with the sorption parameters, while the surface proton charge of the sediments was significantly negatively correlated with them. Considering the kinetics and phosphorus forms changes during the process, the sorption in our study could be considered that the physical process plays an important role.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Marine Pollution Bulletin - Volume 114, Issue 1, 15 January 2017, Pages 277-284
نویسندگان
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