Removal of copper and cadmium from the aqueous solutions by activated carbon derived from Ceiba pentandra hulls
Resource
Journal of Hazardous Materials B129(2006), 123–129
Journal
Journal of Hazardous Materials B129(2006), 123–129
Pages
-
Date Issued
2006
Date
2006
Author(s)
Rao, Madhava M.
Ramesh, A.
Rao, G. Purna Chandra
Seshaiah, K.
DOI
246246/2006111501233190
Abstract
Activated carbon prepared from Ceiba pentandra hulls, an agricultural solid waste by-product, for the removal of copper and cadmium from
aqueous solutions has been studied. Parameters such as equilibrium time, effect of pH and adsorbent dose on removal were studied. The adsorbent
exhibited good sorption potential for copper and cadmium at pH 6.0. C O and S O functional groups present on the carbon surface were the
adsorption sites to remove metal ions from solution. The experimental data was analysed by both Freundlich and Langmuir isotherm models. The
maximum adsorption capacity of copper and cadmium was calculated from Langmuir isotherm and found to be 20.8 and 19.5 mg/g, respectively.
The sorption kinetics of the copper and cadmium have been analysed by Lagergren pseudo-first-order and pseudo-second-order kinetic models.
The desorption studies were carried out using dilute hydrochloric acid solution and the effect of HCl concentration on desorption was also studied.
Maximum desorption of 90% for copper and 88% for cadmium occurred with 0.2M HCl.
Subjects
Cadmium
Copper
Adsorption
Activated carbon
Ceiba pentandra hulls
SDGs
Other Subjects
Activated carbon; Adsorbents; Adsorption isotherms; Byproducts; Cadmium; Hydrochloric acid; pH effects; Reaction kinetics; Removal; Solid wastes; Solutions; Sorption; Adsorbent dose; Adsorption sites; Ceiba pentandra hulls; Equilibrium time; Copper; activated carbon; adsorbent; cadmium; copper; hydrochloric acid; Activated carbon; Adsorbents; Adsorption isotherms; Byproducts; Cadmium; Copper; Hydrochloric acid; pH effects; Reaction kinetics; Removal; Solid wastes; Solutions; Sorption; aqueous solution; adsorption; agricultural waste; aqueous solution; article; experimentation; instrumentation; mathematical computing; metal industry; model; pH; pollution; solid waste; Adsorption; Agriculture; Cadmium; Carbon; Ceiba; Copper; Seeds; Waste Products; Water Pollutants, Chemical; Water Purification; Ceiba pentandra
Publisher
Taipei:National Taiwan University Dept Chem Engn
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
1449.pdf
Size
23.19 KB
Format
Adobe PDF
Checksum
(MD5):d2afe0e9798e423e28e6bf3df3e95fe0