摘要
随着经济的增长和科技的进步,电子垃圾成为全球增长最快的垃圾.如果能用环境友好型的方式对电子垃圾中的有用资源进行回收,不仅可以减少环境压力,而且还可以弥补资源的短缺.生物冶金是一种快速发展的技术,它可以克服传统的湿法冶金和火法冶金在金属回收中存在的问题,是一种很有前途的绿色环保的冶金方法.作为生物冶金的一种方式,利用产氰细菌从废弃印刷线路板粉末中提取金,近年来更受到人们的关注.文章对生物浸金技术,尤其是产氰生物的浸金技术作了综述,分析了其在浸金过程中的机理、过程、影响因素,以及生物浸金技术的限制,最后指出将生物法与物理、化学方法相结合,取长补短,是未来生物浸金的发展趋势.
With the continuous development of science and technology, electronic equipments renew faster and faster. If these waste equipments can be used environmentally friendly, not only can they reduce the environmental pressure, but also can make up for the shortage of resources. Biological metallurgy is a rapid development of technology, which can overcome the problems of traditional pyrometallurgy and hydrometallurgy existing in the metal recycling, and is a promising green metallurgical method. As a means of biological metallurgy,using cyanide-generating bacteria to leach gold from waste printed circuit board powder it has attracted a great attention in recent years. This paper introduces research progress of gold bio-leaching technology, especially the gold leaching technology of cyanide-generating bacteria, then analyses its mechanism, gold leaching process, influencing factors, and the limitation of gold bio-leaching technology. Finally it points out that the biological method combined with physical and chemical methods, complement each other, is the development trend of gold bioleaching.
出处
《韩山师范学院学报》
2015年第3期96-102,108,共8页
Journal of Hanshan Normal University
关键词
电子垃圾
废弃印刷线路板
金
生物浸金
产氰微生物
E-waste
waste printed circuit board
gold
gold bio-leaching
cyanide-generating bacteria
