首页|磁性铁锰氧化物的制备及其对磷吸附性能的研究

磁性铁锰氧化物的制备及其对磷吸附性能的研究

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通过化学沉淀法制备了磁性铁锰氧化物,并将其应用于模拟废水中磷的吸附,通过调控溶液pH值、反应温度、反应时间、离子强度、腐殖酸等参数,探究磁性铁锰氧化物对磷的吸附作用.吸附动力学和吸附等温线结果表明,准二级动力学模型和Freundlich等温线模型能较好地描述磷在磁性铁锰氧化物表面的吸附过程,磁性铁锰氧化物对磷的吸附主要以化学吸附为主,且为多层吸附.pH值对吸附实验结果的影响表明,弱酸性条件更有利于磁性铁锰氧化物对磷的吸附.离子强度实验结果表明,磁性铁锰氧化物对磷的吸附机理以内表面络合为主.FTIR分析结果表明,磁性铁锰氧化物表面富有含氧官能团,为磷的吸附提供丰富的活性位点.
Preparation of Magnetic Iron Manganese Oxide and Its Phosphorus Adsorption Performance
Magnetic iron manganese oxide was prepared by chemical precipitation method and applied to simulate the adsorption of phos-phorus in wastewater.Its adsorption effect on phosphorus was investigated by adjusting the pH value of the solution,reaction tempera-ture,reaction time,ion strength,humic acid and other parameters.The results of adsorption kinetics and adsorption isotherms indicate that the pseudo-second-order model and Freundlich isotherm model can better describe the adsorption process of phosphorus on the sur-face of magnetic iron manganese oxides,suggesting that the adsorption of phosphorus by magnetic iron manganese oxides is mainly chem-ical adsorption and multi-layer adsorption.The influence of pH value on the adsorption experiment results indicate that weak acidic con-ditions are more conducive to the adsorption of phosphorus on magnetic iron manganese oxides.The results of ion strength experiments in-dicate that the adsorption mechanism of phosphorus on magnetic iron manganese oxides is mainly surface complexation.The FTIR analy-sis results indicate that the surface of magnetic iron manganese oxide is rich in oxygen-containing functional groups,providing abundant active sites for phosphorus adsorption.

magnetic iron manganese oxidephosphorusadsorption mechanismoxygen containing functional groups

李梦雪、谢明兴、朱兰保、王晶、马莉、潘争伟

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蚌埠学院环境科学实验中心,安徽蚌埠 233000

磁性铁锰氧化物 磷 吸附机理 含氧官能团

蚌埠学院自然科学研究重点项目蚌埠学院产学研项目安徽省大学生创新创业训练计划项目安徽省高校自然科学研究重点项目安徽省高校自然科学研究重点项目

2023ZR04zd2023340306001064S2023113051102023AH0529432023AH052942

2024

长春师范大学学报
长春师范学院

长春师范大学学报

CHSSCD
影响因子：0.312
ISSN：1008-178X
年,卷(期)：2024.43(6)
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