Simple, Rapid, and Environmentally Friendly Method for Selectively Recovering Tantalum by Guanidine-Assisted Precipitation,ACS Sustainable Chemistry & Engineering

当前位置： X-MOL 学术 › ACS Sustain. Chem. Eng. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Simple, Rapid, and Environmentally Friendly Method for Selectively Recovering Tantalum by Guanidine-Assisted Precipitation
ACS Sustainable Chemistry & Engineering ( IF 7.1 ) Pub Date : 2018-07-19 00:00:00 , DOI: 10.1021/acssuschemeng.8b02440
Takashi Ogi ₁ , Hayato Horiuchi ₁ , Takahiko Makino ₂ , Aditya Farhan Arif ₁ , Kikuo Okuyama ₁

Affiliation

Demand for tantalum (Ta) is dramatically increasing and Ta recovery from waste products is essential to attempt to avoid social conflicts caused by escalating Ta mining. Here, we developed a rapid and facile guanidine-assisted precipitation method for recovering Ta from an aqueous solution containing Ta, tungsten (W), and silicon (Si). The guanidine showed high selectivity for removal of Ta over W or Si, and the highest 99.96% of the Ta was recovered as a precipitate in 3 min. The calcined precipitate was very pure crystalline Ta₂O₅. The method performed well at room temperature without requiring pH adjustment. The proposed method can be regarded as environmentally benign because it minimizes energy consumption, produces little liquid waste, and enables sustainable supply of useful resources.

中文翻译：

简单，快速，环境友好的胍辅助沉淀法选择性回收钽的方法

钽（Ta）的需求急剧增加，从废物中回收钽对于避免因钽矿开采升级而引起的社会冲突至关重要。在这里，我们开发了一种快速简便的胍辅助沉淀法，用于从含有Ta，钨（W）和硅（Si）的水溶液中回收Ta。胍显示出对W或Si去除Ta的选择性高，并且在3分钟内以沉淀形式回收了最高99.96％的Ta。煅烧的沉淀物是非常纯的晶体Ta ₂ O _5。。该方法在室温下表现良好，无需调节pH。所提出的方法可以被认为是对环境无害的，因为它可以最大程度地减少能源消耗，几乎不产生液体浪费，并且可以可持续地提供有用的资源。

更新日期：2018-07-19

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11