Recovery of Gold from Solution by a Manganese Oxide based Adsorbent.
Recovery of Gold from Solution by a Manganese Oxide based Adsorbent.
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通过基于氧化锰的吸附剂从溶液中回收金。
DOI：
10.5188/jsmerj.9.54
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
H. Koyanaka
中科院分区：
文献类型：
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作者：
H. Koyanaka
通过在390°C下加热MnCO 3和Ag 2CO 3（或Ag粉末）的混合物4.5小时来制备氧化锰型Au吸附剂。目前，关于从各种Au溶液中分离或回收Au的论文有很多。本文主要采用活性炭、螯合树脂和藻类作为吸附剂分离回收Au。然而，据作者调查，氧化锰型Au吸附剂的论文至今尚未发表。作者一直在研究锰氧化物型锂吸附剂，并将其应用于锰氧化物型Au吸附剂的制备。Au吸附剂的组成分析为Mn 03.4 Ag 0.15。X-射线衍射图在2θ A值为30.8、36.7和65.36处有弱峰，该吸附剂经酸处理活化后，对1 mg/lAu的人工地热水中的Au-Cl络离子有选择性吸附。从吸附剂洗脱的前10 ml中Au的富集率比初始浓度（1 mg/l Au）增加375倍。另外的洗脱得到每单位重量吸附剂吸附4.52mg/g Au的结果。吸附剂对Ca、Mg离子也有吸附作用。该吸附剂对Ca、Mg离子与目标离子的吸附性能与氧化锰型Li吸附剂相似。因此，认为该性质是锰氧化物型吸附剂中的共同性质。
A manganese oxide type Au adsorbent was prepared by heating a mixture of MnCO3and Ag2CO3 (or Ag powder) at 390°C for 4.5 hours. At present, there are many papers on separating or recovering Au from various Au solutions. In these papers, activated carbon, chelate resin and algae were principally used as the adsorbent for separating or recovering Au. However, as far as the author has investigated, papers on manganese oxide type Au adsorbents have not been published to date. The author has been studying a manganese oxide type Li adsorbent, and the knowledge was applied in preparing a manganese oxide type Au adsorbent. The composition of the Au adsorbent was analyzed as Mn03.4 Ag0.15. The x-ray diffraction pattern showed weak intensity peaks at 30.8, 36.7 and 65.36 as 2θAvalues.This adsorbent was activated by acid treatment, and adsorbed the Au-Cl complex ion selectively from an artificial geothermal water (1mg/lAu). The enrichment ratio of Au in the first 10ml eluted from the adsorbent saw a 375 fold increase over the initial concentration (1mg/lAu). Additional elution yielded a result of 4.52mg/g Au adsorbed per unit weight of the adsorbent. The adsorbent also adsorbed Ca and Mg ions. The property of the adsorbent to adsorb Ca and Mg ions with the objective ion, is similar to the properties of manganese oxide type Li adsorbent. Thus, it is considered that this property is a common property among manganese oxide type adsorbents.