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International Workshop on Diffuse Pollution-Management Measures and Control Technique (IWDCT 2010 E-BOOK)

Huainan,China,10.27-10.29,2010

ISBN: 978-1-935068-38-9 Scientific Research Publishing, USA

E-Book 394pp Pub. Date: October 2010

Category: Earth & Environmental Sciences

Price: $70

Title: Sorption of Pb Metal Using Bottom Ash as a Low Cost Sorb ent
Source: International Workshop on Diffuse Pollution-Management Measures and Control Technique (IWDCT 2010 E-BOOK) (pp 29-33)
Author(s): Joan B. Gorme, Department of Civil and Environmental Engineering Kongju National University 275 Budaedong, Seobukgu, Cheonan, Chungnamdo, Korea (Republic of)
Marla C. Maniquiz, Department of Civil and Environmental Engineering Kongju National University 275 Budaedong, Seobukgu, Cheonan, Chungnamdo, Korea (Republic of)
Soon Seok Kim, Department of Civil and Environmental Engineering Kongju National University 275 Budaedong, Seobukgu, Cheonan, Chungnamdo, Korea (Republic of)
Young Gyu Son, Department of Civil and Environmental Engineering Kongju National University 275 Budaedong, Seobukgu, Cheonan, Chungnamdo, Korea (Republic of)
Lee-Hyung Kim, Department of Civil and Environmental Engineering Kongju National University 275 Budaedong, Seobukgu, Cheonan, Chungnamdo, Korea (Republic of)
Abstract: Recently, adsorption through the use of natural or recycled material is considered to be a low-cost alternative to remove heavy metals from wastewater. This study investigates the potential of coal bottom ash to be used as an adsorbent for the removal of lead (Pb) from aqueous solutions. The physical and chemical characteristics of bottom ash were determined and a series of batch leaching and adsorption experiments were performed to determine efficiency of the adsorbent material. The adsorption capacity was determined as a function of the particle size, specific surface area and contact time. The rate of extent of adsorption is dependent on the specific surface area and particle size of the adsorbent wherein the adsorption rate increased as particle size decreased. Several kinetic models (Lagergren first-order, pseudo-second order and Elovich equation) as well as isotherm models (Langmuir and Freundlich) were applied to the experimental data. The pseudosecond order was found to be the most suitable model describing the adsorption of Pb. On the analysis of equilibrium isotherms, Langmuir isotherm was found to be the best representative for Pb-sorption on bottom ash.
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