Dissolution of natural serpentinite in mineral and organic acids
作者： Sebastian Teir , Hannu Revitzer , Sanni Eloneva , Carl-Johan Fogelholm , Ron Zevenhoven
DOI: 10.1016/J.MINPRO.2007.04.001
关键词: Dissolution 、 Solvent 、 Chemistry 、 Magnesium 、 Leaching (metallurgy) 、 Ammonium 、 Silicon 、 Carbonation 、 Inorganic chemistry 、 Silicate minerals
摘要: Abundant resources of magnesium silicates make an interesting prospect for long-term storage CO2 by mineral carbonation. Several carbonation processes proposed in literature employ extraction silicate minerals using a liquid solvent. In this study, the dissolution natural serpentinite respective solutions acids, bases and ammonium salts has been investigated. Experiments performed at room temperature showed that H2SO4 was most efficient extracting from serpentinite, followed HCl, HNO3, HCOOH CH3COOH. determining kinetics temperatures 30, 50 70 °C 2 M H2SO4, HNO3. At all extracted each three acid tested during 1–2 h. Also large part iron extracted, while very little silicon dissolved (b4%). The rate seemed to be limited product layer diffusion particles with size distribution 74–125 μm. apparent activation energies were 68 kJ mol −1 74
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sci-hub.se 参考文章(21)
K. S. Lackner, CLIMATE CHANGE: A Guide to CO2 Sequestration Science. ,vol. 300, pp. 1677- 1678 ,(2003) , 10.1126/SCIENCE.1079033
Mohamed Fikry Ragai Fouda, Rawhya El-Sayed Amin, Mokhles Mohamed Abd-Elzaher, Extraction of Magnesia from Egyptian Serpentine Ore via Reaction with Different Acids. II. Reaction with Nitric and Acetic Acids Bulletin of the Chemical Society of Japan. ,vol. 69, pp. 1913- 1916 ,(1996) , 10.1246/BCSJ.69.1913
Yang Chen, Susan L Brantley, Dissolution of forsteritic olivine at 65°C and 2<pH<5 Chemical Geology. ,vol. 165, pp. 267- 281 ,(2000) , 10.1016/S0009-2541(99)00177-1
Ah-Hyung Alissa Park, Raja Jadhav, Liang-Shih Fan, CO2 Mineral Sequestration: Chemically Enhanced Aqueous Carbonation of Serpentine Canadian Journal of Chemical Engineering. ,vol. 81, pp. 885- 890 ,(2008) , 10.1002/CJCE.5450810373
Ah-Hyung Alissa Park, Liang-Shih Fan, CO2 mineral sequestration: physically activated dissolution of serpentine and pH swing process Chemical Engineering Science. ,vol. 59, pp. 5241- 5247 ,(2004) , 10.1016/J.CES.2004.09.008
Sebastian Teir, Sanni Eloneva, Carl-Johan Fogelholm, Ron Zevenhoven, Dissolution of steelmaking slags in acetic acid for precipitated calcium carbonate production Energy. ,vol. 32, pp. 528- 539 ,(2007) , 10.1016/J.ENERGY.2006.06.023
M. Hänchen, V. Prigiobbe, G. Storti, T.M. Seward, M. Mazzotti, Dissolution kinetics of fosteritic olivine at 90–150 °C including effects of the presence of CO2 Geochimica et Cosmochimica Acta. ,vol. 70, pp. 4403- 4416 ,(2006) , 10.1016/J.GCA.2006.06.1560
Robert W Luce, Robert W Bartlett, George A Parks, Dissolution kinetics of magnesium silicates Geochimica et Cosmochimica Acta. ,vol. 36, pp. 35- 50 ,(1972) , 10.1016/0016-7037(72)90119-6
C.I. Apostolidis, P.A. Distin, The kinetics of the sulphuric acid leaching of nickel and magnesium from reduction roasted serpentine Hydrometallurgy. ,vol. 3, pp. 181- 196 ,(1978) , 10.1016/0304-386X(78)90019-1
Alexander Pelmenschikov, Helene Strandh, Lars G. M. Pettersson, Jerzy Leszczynski, Lattice Resistance to Hydrolysis of Si−O−Si Bonds of Silicate Minerals: Ab Initio Calculations of a Single Water Attack onto the (001) and (111) β-Cristobalite Surfaces The Journal of Physical Chemistry B. ,vol. 104, pp. 5779- 5783 ,(2000) , 10.1021/JP994097R