title: Removal of Pb(II), Cd(II) and Co(II) from aqueous solution using Garcinia mangostana L. fruit shell.
abstract: This study examines the possibility of using mangosteen shell to remove low concentrations of lead, zinc and cobalt (less than 100 mg/l) from aqueous solution. It was found that the biosorption capacities were significantly affected by solution pH, contact time and initial metal ions concentration. Un-extracted and extracted dyes of mangosteen shell were investigated. Moreover higher pH up to 5 favoring higher metal ion removal. Kinetic and isotherm experiments were carried out at the optimal pH: at pH 5.0 for lead and zinc, and at pH 4.0 for cobalt. The metal removal rates were rapid, with 90% of the total adsorption taking place within 60 min. Mangosteen shell showed the highest potential for the removal of toxic metals in aqueous solution.
authors.affiliation: Faculty of Mathematics and Natural Sciences, Andalas University, Padang, Indonesia. rzein@fmipa.unand.ac.id
authors.forename: R
authors.initials: R
authors.lastname: Zein
authors.forename: R
authors.initials: R
authors.lastname: Suhaili
authors.forename: F
authors.initials: F
authors.lastname: Earnestly
authors.lastname: Indrawati
authors.forename: E
authors.initials: E
authors.lastname: Munaf
mesh_terms: D000327:Adsorption; D002104:Cadmium / Q000302:isolation & purification; D003035:Cobalt / Q000302:isolation & purification; D029762:Garcinia mangostana / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007854:Lead / Q000302:isolation & purification; D019216:Metals, Heavy / Q000302:isolation & purification*; D012996:Solutions; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*; D018508:Water Purification / Q000379:methods
chemical_list: D019216:Metals, Heavy; D012996:Solutions; D014874:Water Pollutants, Chemical; D002104:Cadmium; D007854:Lead; D003035:Cobalt