کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4428170 1619282 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Non-acidic synthesis of phosphatized dolomite and its sorption behaviour towards Pb 2+2+, Zn2+2+, Cu2+2+, Cd2+2+, Ni2+2+, Sr2+2+ and Co2+2+ ions in multicomponent aqueous solution
ترجمه فارسی عنوان
سنتز غیراسیدی دولومیت فسفاتی شده و رفتار جذب آن نسبت به یون های Pb 2 + 2 +، Zn2 + 2 +، CU2 + 2 +، CD2 + 2 +، Ni2 + 2 +، SR2 + 2 + و CO2 + 2 + در محلول آبی چندجزئی
کلمات کلیدی
جذب؛ یون‌های فلزی؛ دولومیت فسفاتی شده؛ سنتز غیراسیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی


• The soft non-acidic method for preparing high performance granular phosphate sorbents was proposed.
• Up to 90%–95% of Pb2+, Zn2+, Cu2+, Cd2+, Ni2+, Sr2+ and Co2+ was removed from multicomponent aqueous solutions in dynamic mode.
• Cost-effective metal ions removal was achieved using phosphatized dolomite.
• The influence of phase, chemical composition and surface properties of sorbents on their behaviour towards bivalent metal ions was discussed.

The present work proposes the soft non-acidic method for preparing granular phosphate sorbents under standard conditions (25 °C, 101.3 kPa) using thermally activated dolomite as a cheap source of Ca and Mg, with NaH2PO4,Na2HPO4 and Na3PO4 aqueous solutions as phosphating reagents. The effect of the reagents’ properties and contact time on the phase and chemical compositions, adsorption and textural properties of the obtained sorbents was studied. The most effective sorbents were highly efficient. Up to 90%–95% of Pb2+,Zn2+,Cu2+,Cd2+,Ni2+,Sr2+ and Co2+ was removed from multicomponent aqueous solutions in dynamic mode (at initial concentrations of 5 mg L−1, linear velocity 10 m h−1). The influence of phase, chemical composition and surface properties of sorbents on their behaviour towards bivalent metal ions was also discussed.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Technology & Innovation - Volume 6, November 2016, Pages 152–164
نویسندگان
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