Wastewater Treatment for Lead Removal: A Review
نویسنده
چکیده
Lead is a major cause of environmental concern for the industries like paint, pesticides, battery, mine, smelting etc. Lead can cause diseases related to kidney, liver, brain and nervous system. Various methods used for lead removal include electro-coagulation, ion exchange, membrane separation and suspended and attached growth biological techniques. In case of electro-coagulation, factors like current density, pH, initial concentration affect the lead removal. Adsorption is one of the important methods for lead removal. Parameters like pH, initial concentration, adsorbent dose and particle size affect the adsorption process. Various low cost and waste materials can be used to prepare adsorbents. The research on adsorption includes the studies on removal efficiencies, isotherms, kinetics and modelling for the batch and packed bed data. The studies and research carried out for lead removal has been summarized in the current review paper with respect to effect of various parameters, removal efficiencies, kinetics of the solute uptake, modelling approach and isotherm studies.
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