Photocatalytic gold recovery from spent cyanide plating bath solutions
Photocatalytic gold recovery from spent cyanide plating bath solutions
复制标题
从废氰化物镀液中光催化回收金
DOI：
10.1007/bf03215258
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
J. Marugán
中科院分区：
文献类型：
--
作者：
R. Grieken;J. Aguado;M. López;J. Marugán
提出了一种光催化处理电镀废液中高稳定性金氰化物的新方法。该方法允许通过光催化还原回收金，同时增加用于去除处理的氰化物的可用性。金回收需要非氧化性气氛和羟基自由基清除剂的存在。采用TiO 2/SiO2混合光催化剂可提高金的回收率。
A new procedure is presented for the photocatalytic treatment of the highly stable gold-cyanide complexes remaining in spent plating bath solutions. The process allows the recovery of gold by photocatalytic reduction, increasing simultaneously the availability of cyanide for removal treatment. Gold recovery requires a non-oxidant atmosphere and the presence of hydroxyl radical scavengers. The use of mixed TiO2/SiO2photocatalysts leads to an improvement in the gold recovery rate.