Abstract
Based on the special molecular structure of surfactant, paramagnetic material used as magnetic nucleus was coated with two layers of surfactant including an inner layer and an outer layer. Magnetic reagent can combine with activated carbon due to adsorption of hydrophilic raclical of the outer surfactant layer. So activated carbon has magnetism. The effects of magnetic reagent dosage pH and activator upon the magnetic susceptibility of activated carbon were studied. Concerning the optimal conditions. MR-20 is the best magnetic reagent. Concentration of CaCl2 is 0.02M and pH 1.8–2.4. The physical properties of magnetic activated carbon vary with the types, dosage and magnetizing condition of magnetic reagent.
Similar content being viewed by others
References
Hwang, J. Y. 1992. magnetic Reagent for Mineral Processing. For presentation at the SME Annual Meeting phoenix Arizona February. 24. 27.
Berkowite, A. E. et al. 1980. IFFF TRans. Magn. Vol. MAG-16 No. 2, 184.
S. E knalala G. W. Remiers. U. S. P. 3764540. 1973
R. E. Rasenweig U. S. P. 3917538
Elmre, W. C. 1938. Physical Review Series 11. vol. 54 P 309.
Whitehead U. S. P4554088. 1985
J. Y. Hwang U. S. P4834898. 1989
J. Y. Hwang U. S. P 4906382. 1990
Author information
Authors and Affiliations
Additional information
(Responsible Editor: Dai Fangtian)
Rights and permissions
About this article
Cite this article
Shirun, Z., Shouxin, L., Guizhen, F. et al. Preparation of magnetic activated carbon. Journal of Forestry Research 8, 250–253 (1997). https://doi.org/10.1007/BF02875016
Issue Date:
DOI: https://doi.org/10.1007/BF02875016