کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1481992 1510501 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Adsorption of lead ions in aqueous solution using silica–alumina nanoparticles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Adsorption of lead ions in aqueous solution using silica–alumina nanoparticles
چکیده انگلیسی

The adsorption of lead ions in aqueous solution on the surface of silica–alumina nanoparticles is reported. The removal of lead ions from simulated industrial wastewater was performed using silica–alumina particles synthesized by the sol–gel method with a molar ratio of 1:1. Small amounts of lead ions were added to the sol until the critical flocculation concentration was reached and the particles flocculated forming aggregates which sediment down, being removed from the sol. The flocculation kinetics was followed using Dynamic Light Scattering that measures the particle size as a function of time. The amount of lead ions adsorbed by the nanoparticles was determined using Atomic Absorption Spectroscopy. The lead concentration was reduced from 140 ppm to below 10 ppb; this final concentration fulfills the corresponding legislation requirements.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 356, Issues 6–8, 1 March 2010, Pages 383–387
نویسندگان
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