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本文选取广西来宾市丰富资源石灰石为原材料,制备出多孔碳酸钙并应用于磷酸根的吸附性能研究,以探究其在实际应用中的效果。通过实验研究,可以得出其较佳的吸附条件:吸附温度40℃,多孔碳酸钙添加量0.5 g,磷酸根质量浓度为200 mg/L的磷酸钾溶液50 mL,吸附时间2 h。在这个条件下,得出吸附率约85.63%,吸附量约17.05 mg/g。通过对吸附等温模型和动力学模型进行深入分析,结果表明,多孔碳酸钙对磷酸根的吸附行为呈现出典型的双分子层特征,其吸附动力学模式与准二级动力学模型高度一致。进一步的红外光谱数据分析表明,该吸附过程主要是基于物理吸附。
Abstract:In this paper, porous calcium carbonate is prepared from limestone, which is rich in resources in Laibin City, Guangxi Province, and applied to the study of phosphate adsorption performance to explore its practical application effect.After researching the use of porous calcium carbonate particles in phosphateradical adsorption, the following ideal adsorption conditions are found, the optimal adsorption temperature is 40 ℃,and the amount of porous calcium carbonate is 0.5 g, potassium phosphate solution with a mass concentration of 200 mg/L phosphate ions is 50 mL,and the optimal adsorption time is 2 h.Under these conditions, the adsorption rate is about 85.63%.The adsorption capacity is approximately 17.05 mg/g.The adsorption of phosphate radical by porous calcium carbonate is demonstrated to belong to bilayer adsorption and the adsorption kinetics follow quasi-second-order kinetics by examining the adsorption isothermal model and kinetic model.According to infrared spectrum research, physical adsorption accounts for the majority of phosphate radical adsorption by porous calcium carbonate.
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基本信息:
DOI:10.14173/j.cnki.hnhg.2026.10.012
中图分类号:TQ132.32;TQ424
引用信息:
[1]韦裔菊,吴琴,陈燕萌.多孔碳酸钙对磷酸根吸附性能的研究[J].河南化工,2026,43(10):14-19.DOI:10.14173/j.cnki.hnhg.2026.10.012.
基金信息:
广西无机材料绿色制备与应用重点实验室运行补助项目(21-220-09)
2026-10-13
2026-10-13