Journal of Shanghai University(Natural Science Edition) ›› 2021, Vol. 27 ›› Issue (4): 666-676.doi: 10.12066/j.issn.1007-2861.2184

• Research Articles • Previous Articles     Next Articles

Preparation of manganese oxide nanoparticles synthesised using a low-oxygen pressure method and its phosphorus absorption performance

XU Jun, YANG Peiyuan, JIAO Zheng, WANG Linjun, WANG Hongbin()   

  1. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
  • Received:2019-10-19 Online:2021-08-20 Published:2021-07-22
  • Contact: WANG Hongbin E-mail:whb@shu.edu.cn

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

CLC Number: