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Manganese adsorptive removal is an important treatment process in constructed wetlands to deal with considerable amounts of tailing wastewater, many materials have been proposed for its removal. This work is aimed to examining the potential of biochars sorbent materials for removing Mn ions from manganese slag aqueous solutions by modified biochars. The biochars with different organic acid-Fe ratios were prepared; factors on Mn adsorption including mixing ratio, Fe adsorption rate, and the BET surface of the modified biochars were discussed and the sorption efficiency of Mn was investigated through column adsorption experiments. According to our study, it’s clearly that loaded organic acid biochar with greater Fe content removed higher percent of Mn from the aqueous solution.

Adsorptive Removal of Manganese from Manganese Slag Aqueous Solutions Using Biochars Loaded with Organic Acid-Fe