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Green Effectively Enhanced Extraction to Produce Yttrium(III) in Slug Flow Microreactor
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2020-03-26 , DOI: 10.1002/cjoc.201900453 Yuan He 1, 2, 3 , Shenghui Guo 1, 2, 3 , Kaihua Chen 1, 2, 3 , Shiwei Li 1, 2, 3 , Shaohua Yin 1, 2, 3
Chinese Journal of Chemistry ( IF 5.5 ) Pub Date : 2020-03-26 , DOI: 10.1002/cjoc.201900453 Yuan He 1, 2, 3 , Shenghui Guo 1, 2, 3 , Kaihua Chen 1, 2, 3 , Shiwei Li 1, 2, 3 , Shaohua Yin 1, 2, 3
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Process reinforcement research was carried out in Y‐junction slug flow microreactors under variable conditions, using EHEHPA (2‐ethylhexyl phosphonic acid mono‐2‐ethylhexyl) to extract yttrium(III) from hydrochloric acid solution. The influence of pH and flow rate on the extraction‐reaction efficiency, slug size, mass transfer performance was assessed. The experimental results showed that maximum extraction‐reaction efficiency of 91.85% can be achieved in the smallest microreactor (residence time is 11.25 s), which was significantly higher than traditional extraction requiring more than 10 min. The slug length tended to decrease with the increase of pH and flow rate. Volumetric mass transfer coefficients for the slug flow microreactors were found to be in the range of 1.39×10−1—1.642 s−1 that is several orders of magnitude higher as compared to traditional extractors, which testified the beneficial effects of Y‐junction slug flow microreactor. Significant mass transfer reinforcement has prompted the use of microreactor as a suitable alternative to traditional extractors, which can advantageously improve the economic and environmental development of mineral processing.
中文翻译：
绿色高效增强萃取，在塞流微反应器中产生钇（III）
在可变条件下的Y型结塞流微反应器中进行了工艺强化研究，使用EHEHPA（2-乙基己基膦酸单-2-乙基己基）从盐酸溶液中萃取钇（III）。评估了pH和流速对萃取反应效率，团块尺寸，传质性能的影响。实验结果表明，在最小的微反应器中（停留时间为11.25 s），可以达到91.85％的最大萃取反应效率，这大大高于传统萃取需要10分钟以上的时间。随着pH和流速的增加，段塞长度倾向于减小。发现团状流微反应器的体积传质系数为1.39×10 -1 -1.642 s -1与传统萃取器相比，它高出几个数量级，这证明了Y型结塞流微反应器的有益作用。大量传质的强化促使微反应器作为传统提取器的合适替代品，可以有利地改善矿物加工的经济和环境发展。
更新日期：2020-04-22
中文翻译：
绿色高效增强萃取，在塞流微反应器中产生钇（III）
在可变条件下的Y型结塞流微反应器中进行了工艺强化研究，使用EHEHPA（2-乙基己基膦酸单-2-乙基己基）从盐酸溶液中萃取钇（III）。评估了pH和流速对萃取反应效率，团块尺寸，传质性能的影响。实验结果表明，在最小的微反应器中（停留时间为11.25 s），可以达到91.85％的最大萃取反应效率，这大大高于传统萃取需要10分钟以上的时间。随着pH和流速的增加，段塞长度倾向于减小。发现团状流微反应器的体积传质系数为1.39×10 -1 -1.642 s -1与传统萃取器相比，它高出几个数量级，这证明了Y型结塞流微反应器的有益作用。大量传质的强化促使微反应器作为传统提取器的合适替代品，可以有利地改善矿物加工的经济和环境发展。
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