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Green Effectively Enhanced Extraction to Produce Yttrium( III ) in Slug Flow Microreactor
Author(s) -
He Yuan,
Guo Shenghui,
Chen Kaihua,
Li Shiwei,
Yin Shaohua
Publication year - 2020
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201900453
Subject(s) - microreactor , slug flow , chemistry , extraction (chemistry) , hydrochloric acid , mass transfer , yttrium , volumetric flow rate , chromatography , flow (mathematics) , analytical chemistry (journal) , chemical engineering , inorganic chemistry , catalysis , thermodynamics , mechanics , organic chemistry , two phase flow , oxide , physics , engineering
Summary of main observation and conclusion 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.