Removal of Zn from aqueous solutions by low-rank coal

The ability of an immature coal (leonardite) to remove zincfrom aqueous solutions was studied as a function of pH,contact time and concentration of metal solutions.Effective removal of Zn^sup 2+^ was demonstrated at pHvalues of 5-6. Kinetic study showed that the adsorption ofZn^sup 2+^ occurs in two...

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Bibliographic Details
Published in:Water, air, and soil pollution air, and soil pollution, 2003-04, Vol.144 (1-4), p.57-65
Main Authors: SOLE, Montserrat, CASAS, Josep M, LAO, Conxita
Format: Article
Language:English
Subjects:
Adsorption
Applied sciences
Aqueous solutions
Environmental monitoring
Exact sciences and technology
Industrial wastewaters
Metal concentrations
Pollution
Wastewaters
Water treatment and pollution
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Summary:The ability of an immature coal (leonardite) to remove zincfrom aqueous solutions was studied as a function of pH,contact time and concentration of metal solutions.Effective removal of Zn^sup 2+^ was demonstrated at pHvalues of 5-6. Kinetic study showed that the adsorption ofZn^sup 2+^ occurs in two phases: a rapid phase followed by aquasi-equilibrium state attained within the first twohours. The adsorption isotherm was measured at 25 °C, using adsorptive solutions at the optimum pH value todetermine the adsorption capacity.[PUBLICATION ABSTRACT]
ISSN:0049-6979
1573-2932
DOI:10.1023/A:1022965417124