Fe(ii) and Mn(ii) removal by Ca(ii)–manganite (γ-MnOOH)-modified red mud granules in water |
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| Authors: | Yingying Su Qi Zhu Jian Li Dongdong Wang Zipeng Xing Lei Fang |
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| Affiliation: | School of Chemistry and Materials Science, Key Laboratory of Chemical Engineering Process & Technology for High-efficiency Conversion, Heilongjiang University, China.; School of Food Engineering, Harbin University, Harbin 150080 China |
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| Abstract: | In this study, a material (DLRMG) was synthesized by modifying Ca2+ and manganite (γ-MnOOH) on red mud granules (RMG), which were the main raw materials derived from industrial alumina. Moreover, a series of experiments were conducted on the adsorption of Fe2+ and Mn2+ in underground water. The prepared samples were analyzed by X-ray diffraction (XRD), thermogravimetric analysis-differential thermal analysis (TG-DTA), zeta potential analysis, BET and scanning electron microscopy (SEM); the concentration of the effluent was found to be of acceptable standard after the treatment. DLRMG continued to treat fluoride wastewater even after the saturated adsorption of Fe2+ and Mn2+, and the results clearly showed that the treatment was effective. Overall, the problems of red mud stockpile and pollution in China would be effectively controlled by DLRMG.The use of the waste of aluminum industry to prepare effective polluted materials for the treatment of underground water. |
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