用石榴皮自溴化盐溶液中回收金研究

传统的氰化钾湿法浸金存在毒性大、污染难控制等安全隐患,开发无氰化浸金新方法具有广阔的发展前景。溴化盐溶液介质对金的浸出具有显著的优势,但是如何从其中回收金离子,仍然是一个挑战。本研究采用石榴皮来做吸附剂材料,考察了从配制的模拟溴化盐介质溶液中吸附金离子的规律,系统研究了pH、时间、温度、溴离子浓度等因素对吸附金离子效率的影响规律,可为溴化盐介质溶液中回收金工艺设计提供有益的参考。

Recovery of Gold from Bromide Solution by Pomegranate Peel

Chemical extraction of gold by traditional cyanide leaching process was toxic and dangerous, and therefore the development of non-cyanide leaching process was quite important in industry. Bromide salt had been studied to leach and recover gold for many years, while how to enrich the trace concentration of gold from bromide solution was a big challenge. In present study, pomegranate peel was proposed as biosorbent to extract gold from solution, and main parameters like pH value, contact time, temperature, bromide concentration on extraction of gold were investigated. The results is beneficial to improvement gold extraction from bromide solution system.