• Xiao Xiao Sichuan Institute of Product Quality Supervision, Inspection and Testing, Chengdu 610100, China
  • Jiabei Zhou School of Chemical Engineering, Sichuan University, Chengdu 610064, China
  • Dali Zhou School of Materials Science and Engineering, Sichuan University, Chengdu 610064, China
  • Liang Li Sichuan Institute of Product Quality Supervision, Inspection and Testing, Chengdu 610100, China
  • Yingjiang Wu Sichuan Institute of Product Quality Supervision, Inspection and Testing, Chengdu 610100, China
  • Xiang Zhou Sichuan Institute of Product Quality Supervision, Inspection and Testing, Chengdu 610100, China
  • Lang Du Sichuan Institute of Product Quality Supervision, Inspection and Testing, Chengdu 610100, China
  • Honggen Chen Sichuan Institute of Product Quality Supervision, Inspection and Testing, Chengdu 610100, China
Keywords: magnetic alginate/hydroxyapatite composite, Cd(II), water-dispersible adsorbent, magnetic separation


Heavy-metal pollution (such as Cd(II)) is regarded as a serious environmental problem, posing a great threat to human beings. In this research, a novel water-dispersible magnetic alginate/hydroxyapatite composite with high-efficiency Cd(II) adsorption performance was successfully synthesized by a facile wet-chemical method. The magnetic separation experiment and magnetic property analysis indicate that a magnetic alginate/hydroxyapatite composite can be effectively separated under a magnetic field. The zeta-potential result and dispersity experiment indicate that the lowest zeta-potential is –39.4 mV at pH = 5, and the obtained sample dispersed well in a Cd(II) solution after 120 min. The maximum adsorption capacity of a sample on Cd(II) is 135.3 mg g–1 at pH = 5, and the adsorption of Cd(II) reached equilibrium in 10 min. The adsorption data could be fitted well using the Langmuir model, and the adsorption kinetic follows a pseudo-second-order kinetic model.


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How to Cite
Xiao X, Zhou J, Zhou D, Li L, Wu Y, Zhou X, Du L, Chen H. NOVEL MAGNETIC ALGINATE/HYDROXYAPATITE COMPOSITE WITH HIGH-EFFICIENCY CADMIUM-ADSORPTION PERFORMANCE. MatTech [Internet]. 2024Feb.6 [cited 2024Apr.24];58(1):61–68. Available from: