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The pollution of manganese (Mn) ion in both surface and groundwater occurs naturally or by anthropogenic sources. The high level of Mn(II) causes neurological disorder similar Parkinson's disease. This study reviews the reported manganese removal technique from aqueous solutions, including bioremediation, adsorption, filtration, chemical precipitation, and other techniques such as electrocoagulation, ion exchange, coagulation and flocculation, oxidation and filtration, membrane processes, and using oxidation chemicals presenting available choices to solve the problem of manganese pollution. The bioremediation and adsorption technique were found to be the most practical and mostly accepted in the literature. Based on findings this study, in ground waters the highest level of manganese 4.39 to 62.62 mg/L was found in Chhattisgarh, and the lowest level was 0.00 to 0.11 mg/L found in Nigeria. This review summarizes existing awareness on several perspectives of the principals and utilization of removal technique of manganese and critically reviews the difficulties to its commercial achievement and future aspects. [ABSTRACT FROM AUTHOR]

The pollution of manganese (Mn) ion in both surface and groundwater occurs naturally or by anthropogenic sources. The high level of Mn(II) causes neurological disorder similar Parkinson's disease. This study reviews the reported manganese removal technique from aqueous solutions, including bioremediation, adsorption, filtration, chemical precipitation, and other techniques such as electrocoagulation, ion exchange, coagulation and flocculation, oxidation and filtration, membrane processes, and using oxidation chemicals presenting available choices to solve the problem of manganese pollution. The bioremediation and adsorption technique were found to be the most practical and mostly accepted in the literature. Based on findings this study, in ground waters the highest level of manganese 4.39 to 62.62 mg/L was found in Chhattisgarh, and the lowest level was 0.00 to 0.11 mg/L found in Nigeria. This review summarizes existing awareness on several perspectives of the principals and utilization of removal technique of manganese and critically reviews the difficulties to its commercial achievement and future aspects. [ABSTRACT FROM AUTHOR]