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Wenlei Li,Huixin Jin,Hongyan Xie,Duolun Wang,Ershuai Lei 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.120 No.-
Extensive research is being carried out to efficiently utilize electrolytic manganese residue (EMR) andconvert it into useful materials. In this paper, phase pure zeolite A (ZA) and zeolite X (ZX) were synthesizedby EMR for the first time. The EMR-based zeolites were characterized by XRD, TG, SEM and BET, andtheir zero point charges were tested. Then, the adsorption capacities of ZA and ZX on Mn ions were studied. On the adsorbent concentration = 3.0 g/L and C0 = 439 mg/L, the adsorption capacities of ZA and ZX onMn ion were 119.5 and 96.7 mg/g, respectively. In addition, the adsorption kinetics and isotherms of theadsorption process were discussed, and the adsorption mechanism was clarified by means of XRD, FTIR,SEM, and XPS. The appearance of Mn-O functional groups indicated that Mn ions did enter the bindingsites of zeolites. Moreover, ZA and ZX were successfully regenerated in this work. Furthermore, the influenceof coexisting cations was explored, and the maximum adsorption capacities of ZA and ZX were comparedwith other adsorbents, which proved the excellent adsorption of Mn ions by ZA and ZX. Inconclusion, the synthesized ZA and ZX were low-cost adsorption materials with high adsorption capacity.
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