SCI和EI收录∣中国化工学会会刊

›› 2008, Vol. 16 ›› Issue (1): 112-118.

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Activated Hard Shell of Apricot Stones: A Promising Adsorbent in Gold Recovery

Mansooreh Soleimani, Tahereh Kaghazchi   

  1. Faculty of Chemical Engineering, AmirKabir University of Technology, Tehran 15875-4413, Iran
  • 收稿日期:2006-12-21 修回日期:2007-08-23 出版日期:2008-02-28 发布日期:2008-02-28
  • 通讯作者: Tahereh Kaghazchi, E-mail: kaghazch@aut.ac.ir

Activated Hard Shell of Apricot Stones: A Promising Adsorbent in Gold Recovery

Mansooreh Soleimani, Tahereh Kaghazchi   

  1. Faculty of Chemical Engineering, AmirKabir University of Technology, Tehran 15875-4413, Iran
  • Received:2006-12-21 Revised:2007-08-23 Online:2008-02-28 Published:2008-02-28

摘要: Activated carbon has been proven to be an effective adsorbent for the recovery of a wide variety of metal ions from aqueous solutions. In this research, the activated hard shell of Iranian apricot stones was used for gold recovery from electro-plating wastewater. The effect of parameters such as dose and particle size of adsorbent, pH, agitation speed of mixing on the gold recovery was investigated. The results showed that under the optimum operating conditions more than 98% of gold ions were adsorbed onto activated carbon after just 3 h. In addition, the adsorbed gold could be eluted from this adsorbent by improved striping method. The process involves contact of gold-laden adsorbent with a strong base at ambient temperatures followed by elution with an aqueous solution containing an organic solvent. It was found that activated hard shell of apricot stones has the potential to replace imported commercial activated carbons in gold adsorption processes.

关键词: gold recovery, activated carbon, hard shell of apricot stones, adsorbent

Abstract: Activated carbon has been proven to be an effective adsorbent for the recovery of a wide variety of metal ions from aqueous solutions. In this research, the activated hard shell of Iranian apricot stones was used for gold recovery from electro-plating wastewater. The effect of parameters such as dose and particle size of adsorbent, pH, agitation speed of mixing on the gold recovery was investigated. The results showed that under the optimum operating conditions more than 98% of gold ions were adsorbed onto activated carbon after just 3 h. In addition, the adsorbed gold could be eluted from this adsorbent by improved striping method. The process involves contact of gold-laden adsorbent with a strong base at ambient temperatures followed by elution with an aqueous solution containing an organic solvent. It was found that activated hard shell of apricot stones has the potential to replace imported commercial activated carbons in gold adsorption processes.

Key words: gold recovery, activated carbon, hard shell of apricot stones, adsorbent