OZONATION AND SOL-GEL METHOD TO OBTAIN Cu/CuO NANOPARTICLES FROM CYANIDATION WASTEWATER

被引：0

作者：

Soria Aguilar, Maria de Jesus ^{[1
]}

Puente Siller, Damaris Margarita ^{[1
]}

Carrillo Pedroza, Francisco Raul ^{[1
]}

Garcia Cerda, Luis Alfonso ^{[2
]}

Velazquez Salazar, Jesus ^{[3
]}

机构：

[1] Univ Autonoma Coahuila, Fac Met, Monclova 25710, Coahuila, Mexico

[2] Ctr Invest Quim Aplicada, Saltillo 25253, Coahuila, Mexico

[3] Univ Texas San Antonio, Dept Phys & Astron, San Antonio, TX 78249 USA

来源：

REVISTA INTERNACIONAL DE CONTAMINACION AMBIENTAL | 2015年 / 31卷 / 03期

关键词：

cyanide; gold mining effluents; nanoparticles; copper; CATALYSTS;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The extraction process of gold and silver by cyanidation generates large amounts of effluent which also contain contaminants such as cyanide and significant metal values such as copper. This paper presents the results of the removal and recovery of copper from ozonation treatment of a residual aqueous cyanide. The residual solution was treated by ozonation-precipitation to obtain a precipitate of copper. From this, copper nanocomposites obtained by Pechini modified sol-gel method were obtained. The compounds obtained were characterized by XRD, showing a dependence of the type of compounds formed over time of ozonation and heat treatment of the gel. The particle size was measured by SEM and calculated by the Scherrer equation, being between 50 and 120 nm.

引用

页码：265 / 270

页数：6

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