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2019 XANTHATED COAL AS A LEAD CATION EXCHANGER Tche Quim by Roberto Fernandez is a document available to read on EtoBox.
High concentrations of heavy metals in industrial effluents has led to contamination of natural water bodies. To remove these heavy metals, we prepared a cation exchanger from coal (OC) modified by treatment with CS2 and NaOH, to obtain xanthated coal (XC). Lead removal was best at pH 5 with adsorption of 74% and 98% for OC and XC. The adsorption reached equilibrium at 120 min (pseudo-second order kinetics). Isotherms showed OC best suited to Langmuir isotherm but, once xanthated, to Freundlich.
- Author
- Roberto Fernandez
- Language
- EN