纳米氧化锰的低氧压法制备及其对磷的吸附性能

doi:10.12066/j.issn.1007-2861.2184

摘要/Abstract

摘要：

设计了一种基于工业连轧生产线的低氧压法, 通过控制含锰冷轧板的气氛露点制备了纳米氧化锰磷吸附剂, 并研究了吸附剂的吸附性能. 结果表明: 纳米氧化锰磷吸附剂具有很好的热稳定性, 最佳吸附时间为24 h, 最佳投加量为3.6 g/L, 且在强酸环境下有着非常优秀的吸附性能; 试验所得数据与准二级动力学模型和Langmuir等温吸附模型拟合良好, 在温度为30 ${^\circ}$C, pH值为1.5的环境下其最大吸附能力约为8.3 mg/g.

关键词: 低氧压法, 吸附剂, 动力学拟合, 等温吸附拟合

Abstract:

A low-oxygen pressure method was proposed based on an industrial continuous rolling production line. Using this method, a manganese oxide nanoparticle phosphorus adsorbent was prepared by controlling the dew point of manganese-containing cold-rolled sheets. The adsorption performance of the adsorbent was assessed. Results showed that the adsorbent exhibited good thermal stability. Its optimal adsorption time was 24 h, and the best adsorbent dosage was 3.6 g/L. A test was also conducted. It was proved that the adsorbent had excellent performance in strongly acidic environments. The data obtained from the test were fitted to the quasi-second-order kinetic and Langmuir isotherm adsorption models. The maximum adsorption capacity was found to be 8.3 mg/g at a temperature of 30 $^{\circ}$C and pH value of 1.5.

Key words: low-oxygen pressure method, adsorbent, kinetic fitting, isothermal adsorption fitting

中图分类号:

X524

胥俊, 杨培元, 焦正, 王林军, 汪宏斌. 纳米氧化锰的低氧压法制备及其对磷的吸附性能[J]. 上海大学学报(自然科学版), 2021, 27(4): 666-676.

XU Jun, YANG Peiyuan, JIAO Zheng, WANG Linjun, WANG Hongbin. Preparation of manganese oxide nanoparticles synthesised using a low-oxygen pressure method and its phosphorus absorption performance[J]. Journal of Shanghai University（Natural Science Edition）, 2021, 27(4): 666-676.

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