Removal of heavy metal ions from aqueous solutions using various low-cost adsorbents

The removal of single heavy metals Co and Zn from aqueous solutions using various low-cost adsorbents (Fe 2O 3, Fe 3O 4, FeS, steel wool, Mg pellets, Cu pellets, Zn pellets, Al pellets, Fe pellets, coal, and GAC) was investigated. Experiments were performed at different solution pH values (1.5–9) an...

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Veröffentlicht in:	Journal of hazardous materials 2003-08, Vol.102 (2), p.291-302
Hauptverfasser:	Wang, Yuen-Hua, Lin, Su-Hsia, Juang, Ruey-Shin
Format:	Artikel
Sprache:	eng
Schlagworte:	Adsorption Applied sciences Breakthrough curve Chemistry Cobalt - isolation & purification Cost Control Exact sciences and technology General and physical chemistry General purification processes Heavy metals Hydrogen-Ion Concentration Low-cost adsorbents Pollution Removal Solid-liquid interface Surface physical chemistry Wastewaters Water Movements Water Pollutants - isolation & purification Water Purification - economics Water Purification - methods Water treatment and pollution Zinc - isolation & purification
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Zusammenfassung:	The removal of single heavy metals Co and Zn from aqueous solutions using various low-cost adsorbents (Fe 2O 3, Fe 3O 4, FeS, steel wool, Mg pellets, Cu pellets, Zn pellets, Al pellets, Fe pellets, coal, and GAC) was investigated. Experiments were performed at different solution pH values (1.5–9) and metal concentrations (0.67–333 mg/l). The effect of solution pH on metal adsorption using Fe 2O 3 and Fe 3O 4 was significant, but was negligibly small using steel wool, Mg pellets, Fe pellets, and Al pellets over the entire pH range. Steel wool and Mg pellets were the most excellent adsorbents; for example, the removal of Zn and Co from dilute solutions (
ISSN:	0304-3894 1873-3336
DOI:	10.1016/S0304-3894(03)00218-8