mercury(ii) adsorption onto the magnesium oxide impregnated volcanic ash soil derived ceramic from aqueous phase
نویسندگان
چکیده
the present investigation attempted to develop the ceramic adsorbent media in order to remove the mercury from aqueous phase. two ceramics, akadama volcanic ash soil-ceramic (aceramic) and improved magnesium oxide impregnated akadama volcanic ash soil-ceramic (maceramic) were produced from raw akadama volcanic ash soil by heating process to determine the hg(ii) adsorption capacity. adsorption experiments of ceramics were performed as a function of contact time, solution ph, adsorbent dosage and adsorbate concentration following the batch mode operation. results clearly revealed the adsorption capacity (265±8.5 μg/g) of ma-ceramic is significantly higher (~12 times) than that of the a-ceramic material. the adsorption was largely ph dependent and neutral ph was associated with higher mercury adsorption capacity in both ceramics. ma-ceramic showed 94% and 86% desorption and resorption capacities, respectively.
منابع مشابه
Effect of aggregate structure on VOC gas adsorption onto volcanic ash soil.
The understanding of the gaseous adsorption process and the parameters of volatile organic compounds such as organic solvents or fuels onto soils is very important in the analysis of the transport or fate of these chemicals in soils. Batch adsorption experiments with six different treatments were conducted to determine the adsorption of isohexane, a gaseous aliphatic, onto volcanic ash soil (Ta...
متن کاملAbsorption of copper (Cu2+) and nickel (Ni2+) from aqueous solutions by volcanic ash soil
Introduction: Natural volcanic ash soil is one of minerals whose major contents are metal oxides. In this study absorption of copper (Cu2+) and nickel (Ni2+) on natural volcanic ash soil has been investigated at 27±1c as a function of PH, metal concentration, contact time and the amount of sorbet, using batch experiments. Methods: The necessary samples of natural volcanic ashes were collected...
متن کاملCs+ removal from aqueous solutions through adsorption onto Florisil® impregnated with trihexyl(tetradecyl)phosphonium chloride.
This research determined the adsorption performance of Florisil® impregnated with trihexyl(tetradecyl)phosphonium chloride (Cyphos IL-101) in the process of Cs+ removal from aqueous solutions. The obtained Florisil® impregnated with the studied ionic liquid was characterized through energy dispersive X-ray analysis and Fourier transform infrared spectroscopy in order to verify that the impregna...
متن کاملAdsorption of methyl orange from aqueous solution onto calcined Lapindo volcanic mud.
In this study, calcined Lapindo volcanic mud (LVM) was used as an adsorbent to remove an anionic dye, methyl orange (MO), from an aqueous solution by the batch adsorption technique. Various conditions were evaluated, including initial dye concentration, adsorbent dosage, contact time, solution pH, and temperature. The adsorption kinetics and equilibrium isotherms of the LVM were studied using p...
متن کاملAdsorption of anionic dyes from aqueous solution on zeolite from fly ash-iron oxide magnetic nanocomposite
Magnetic zeolite/iron oxide nanocomposite was prepared by mixing zeolite synthesized from coal fly ashes with magnetite nanoparticles in suspension and was used for the removal of Reactive Orange 16 (RO16) and Indigo Carmine (IC) from aqueous solutions. The effect of various experimental parameters such as contact time, pH, adsorbent dose and temperature were investigated. The experimental data...
متن کاملEnhanced Adsorption of Selenium Ions from Aqueous Solution Using Iron Oxide Impregnated Carbon Nanotubes
The aim of this research was to investigate the potential of raw and iron oxide impregnated carbon nanotubes (CNTs) as adsorbents for the removal of selenium (Se) ions from wastewater. The original and modified CNTs with different loadings of Fe2O3 nanoparticles were characterized using high resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), X-ray diffracto...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
international journal of environmental researchناشر: university of tehran
ISSN 1735-6865
دوره 5
شماره 3 2011
کلمات کلیدی
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023