Gold Removal and Recovery using Mesoporous Silica Adsorbents
作者： K.F. Lam , G. McKay , K.L. Yeung
DOI:
关键词:
摘要: Two gold-selective adsorbents were prepared from MCM-41 by grafting amino and thiol groups. The mesoporous silica possess higher adsorption capacity for gold compared to activated carbons. OMSNH2 adsorbent was able selectively remove adsorb solutions containing copper. Pure recovered a simple acid wash the regenerated could be reused. OMS-SH also gold, but always with small quantity of copper (ca 1-5 at. %). In addition, metals irreversibly adsorbed on can not easily recovered.
techconnect.org参考文章(12)
T Tatsumi, K.A. Koyano, Y. Tanaka, S. Nakata, Stabilization of M41S Materials by Trimethylsilylation Studies in Surface Science and Catalysis. ,vol. 117, pp. 143- 150 ,(1998) , 10.1016/S0167-2991(98)80988-9
Mitsutaka Okumura, Susumu Tsubota, Masakazu Iwamoto, Masatake Haruta, Chemical Vapor Deposition of Gold Nanoparticles on MCM-41 and Their Catalytic Activities for the Low-temperature Oxidation of CO and of H2 Chemistry Letters. ,vol. 1998, pp. 315- 316 ,(1998) , 10.1246/CL.1998.315
J. C. Vartuli, K. D. Schmitt, C. T. Kresge, W. J. Roth, M. E. Leonowicz, S. B. McCullen, S. D. Hellring, J. S. Beck, J. L. Schlenker, Effect of Surfactant/Silica Molar Ratios on the Formation of Mesoporous Molecular Sieves: Inorganic Mimicry of Surfactant Liquid-Crystal Phases and Mechanistic Implications Chemistry of Materials. ,vol. 6, pp. 2317- 2326 ,(1994) , 10.1021/CM00048A018
Ka Yee Ho, Gordon McKay, King Lun Yeung, Selective Adsorbents from Ordered Mesoporous Silica Langmuir. ,vol. 19, pp. 3019- 3024 ,(2003) , 10.1021/LA0267084
K. A. Koyano, T. Tatsumi, Y. Tanaka, S. Nakata, Stabilization of Mesoporous Molecular-Sieves by Trimethylsilylation Journal of Physical Chemistry B. ,vol. 101, pp. 9436- 9440 ,(1997) , 10.1021/JP9724941
Ravichandra S. Mulukutla, Yasuhiro Iwasawa, Kiyotaka Asakura, Seitaro Namba, Nanosized rhodium oxide particles in the MCM-41 mesoporous molecular sieve Chemical Communications. pp. 1425- 1426 ,(1998) , 10.1039/A802259C
Dennis W. Darnall, Benjamin. Greene, Michael T. Henzl, J. Michael. Hosea, Robert A. McPherson, Joseph. Sneddon, M. Dale. Alexander, Selective recovery of gold and other metal ions from an algal biomass. Environmental Science & Technology. ,vol. 20, pp. 206- 208 ,(1986) , 10.1021/ES00144A018
W Nakbanpote, P Thiravetyan, C Kalambaheti, Comparison of gold adsorption by Chlorella vulgaris, rice husk and activated carbon Minerals Engineering. ,vol. 15, pp. 549- 552 ,(2002) , 10.1016/S0892-6875(02)00064-X
Ryong Ryoo, Shinae Jun, Improvement of Hydrothermal Stability of MCM-41 Using Salt Effects during the Crystallization Process The Journal of Physical Chemistry B. ,vol. 101, pp. 317- 320 ,(1997) , 10.1021/JP962500D
Sibudjing Kawi, Supercritical fluid extraction of surfactant template from MCM-41 Chemical Communications. pp. 1407- 1408 ,(1998) , 10.1039/A802907E