Adsorption of Au(III) from Aqueous Solution by Calcined Gibbsite

被引:7
|
作者
Ogata, Fumihiko [1 ]
Kawasaki, Naohito [1 ]
机构
[1] Kinki Univ, Fac Pharm, Higashiosaka, Osaka 5778502, Japan
来源
关键词
PRECIOUS-METAL IONS; SELECTIVE RECOVERY; GOLD; SILVER(I); GOLD(III); RESINS; CHITOSAN; WATER; OXIDE;
D O I
10.1021/je400888r
中图分类号
O414.1 [热力学];
学科分类号
摘要
Gibbsite (GB) was prepared in this work by calcination between (200 and 1000) degrees C (GB200 and GB1000, respectively). Properties of the GBs prepared over this range of temperatures, such as their morphologies, crystallinities, specific surface areas, the number of hydroxyl groups, pore volumes, and mean pore diameters were investigated. The amount of Au(III) adsorbed onto the GBs was also evaluated., Our findings show that the amount of Au(III) adsorbed onto the GBs is related to the specific surface area and the number of hydroxyl groups. In this study, GB400, that is, GB calcined at 400 degrees C, had the largest specific surface area and number of hydroxyl groups, as well as the largest amount of adsorbed Au(III). Furthermore, the most suitable pH for the adsorption of Au(III) onto GB400 was approximately 6.0, and the gold chloro-hydroxy species [AuCl2(OH)(2)](-) was selectively adsorbed at this temperature. The equilibrium for adsorption was reached within 24 h, and the experimental data were fit to the pseudo-second-order model. The adsorption isotherm data were better characterized by the Langmuir model than the Freundlich model. The presence of chloride ions (Cl-) affected the adsorption of Au(III) onto GB400. The increase of Delta G with temperature showed that the adsorption was endothermic and more favorable at higher temperatures. The positive Delta H values also indicated that Au(III) adsorption on GB400 was endothermic. The positive Delta S values suggest an increase in randomness at the solid solution interface during the adsorption process. GB400 could be used for at least three Au(III) adsorption/desorption cycles. Collectively, these results suggest that GB400 would be useful for the adsorption of Au(III) from aqueous solutions.
引用
收藏
页码:412 / 418
页数:7
相关论文
共 50 条
  • [21] Adsorption of phosphate ions from an aqueous solution by calcined nickel-cobalt binary hydroxide
    Ogata, Fumihiko
    Ueta, Erimi
    Toda, Megumu
    Otani, Masashi
    Kawasaki, Naohito
    WATER SCIENCE AND TECHNOLOGY, 2017, 75 (01) : 94 - 105
  • [22] Adsorption behaviour of calcined layered double hydroxides towards removal of fluoride from aqueous solution
    Lv, Liang
    JOURNAL OF WATER SUPPLY RESEARCH AND TECHNOLOGY-AQUA, 2006, 55 (06): : 413 - 418
  • [23] Adsorption of Dye from Aqueous Solution by Zn-Al Calcined Layered Double Hydroxide
    Zhang, Lifang
    Chen, Yingying
    APPLICATIONS OF ENGINEERING MATERIALS, PTS 1-4, 2011, 287-290 : 390 - 393
  • [24] Selective adsorption of Au (III) from aqueous solution by a Cu-based bisligand metal organic framework adsorbent
    Hu, Yuting
    Wang, Shixing
    Zhang, Libo
    JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 2021, 9 (05):
  • [25] Study on the adsorption of lanthanum(III) from aqueous solution by bamboo charcoal
    Chen Qing
    JOURNAL OF RARE EARTHS, 2010, 28 : 125 - 131
  • [26] The characteristics of Escherichia coli adsorption of arsenic(III) from aqueous solution
    Wu, YunHai
    Feng, ShiXun
    Li, Bin
    Mi, XianMiao
    WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY, 2010, 26 (02): : 249 - 256
  • [27] Adsorption of Cr(III) from Aqueous Solution using Borax Sludge
    Senberber, Fatma Tugce
    Yildirim, Meral
    Mermer, Nevin Karamahmut
    Derun, Emek Moroydor
    ACTA CHIMICA SLOVENICA, 2017, 64 (03) : 654 - 660
  • [28] The characteristics of Escherichia coli adsorption of arsenic(III) from aqueous solution
    YunHai Wu
    ShiXun Feng
    Bin Li
    XianMiao Mi
    World Journal of Microbiology and Biotechnology, 2010, 26 : 249 - 256
  • [29] CHROMIUM (III) ADSORPTION FROM AQUEOUS SOLUTION BY Rhizophora apiculata TANNINS
    Oo, C. W.
    Jain, K.
    INDONESIAN JOURNAL OF CHEMISTRY, 2007, 7 (02) : 180 - 184
  • [30] Highly effective and selective adsorption of Au(III) from aqueous solution by poly(ethylene sulfide) functionalized chitosan: Kinetics, isothermal adsorption and thermodynamics
    Wang, Shuai
    Wang, Hao
    Wang, Shixing
    Zhang, Libo
    Fu, Likang
    MICROPOROUS AND MESOPOROUS MATERIALS, 2022, 341