TY - JOUR
T1 - Liquid-Liquid Microextraction of Cu2+ from Water Using a New Circle Microchannel Device
AU - Dai, Shuang
AU - Luo, Jianhong
AU - Li, Jun
AU - Zhu, Xinhua
AU - Cao, Yan
AU - Komarneni, Sridhar
N1 - Funding Information:
The authors gratefully acknowledge financial support from the Sichuan university science and technology planning project (No. SCU2015C002) and Chinese National Natural Science Foundation (21776181).
Publisher Copyright:
© 2017 American Chemical Society.
PY - 2017/11/8
Y1 - 2017/11/8
N2 - In this work, to evaluate the new circle microchannel device for the removal of Cu2+ from water, various parameters on the mass transfer effect and extraction efficiency were investigated by employing bis(2-ethylhexyl) phosphate (D2EHPA) as an extractant and kerosene as a solvent. The mechanism of Cu2+ extraction from water by D2EHPA(R2H2) is as follows: Cu2+ + 2.1(R2H2)(o) ⇔ (CuR2·2.2RH)(o) + 2H(o)+. The contact time and microchannel diameter were found to have great effect on the volumetric mass transfer coefficient (KLa). However, the temperature, the initial pH of water solution, and the D2EHPA volume fraction of the extraction system nearly had no effect on the KLa. The results of this study revealed that the new circle microchannel may be an effective device for liquid-liquid microextraction as the extraction efficiency for Cu2+ was more than 98% by three stage extraction under optimized conditions.
AB - In this work, to evaluate the new circle microchannel device for the removal of Cu2+ from water, various parameters on the mass transfer effect and extraction efficiency were investigated by employing bis(2-ethylhexyl) phosphate (D2EHPA) as an extractant and kerosene as a solvent. The mechanism of Cu2+ extraction from water by D2EHPA(R2H2) is as follows: Cu2+ + 2.1(R2H2)(o) ⇔ (CuR2·2.2RH)(o) + 2H(o)+. The contact time and microchannel diameter were found to have great effect on the volumetric mass transfer coefficient (KLa). However, the temperature, the initial pH of water solution, and the D2EHPA volume fraction of the extraction system nearly had no effect on the KLa. The results of this study revealed that the new circle microchannel may be an effective device for liquid-liquid microextraction as the extraction efficiency for Cu2+ was more than 98% by three stage extraction under optimized conditions.
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U2 - 10.1021/acs.iecr.7b01888
DO - 10.1021/acs.iecr.7b01888
M3 - Article
AN - SCOPUS:85033576138
SN - 0888-5885
VL - 56
SP - 12717
EP - 12725
JO - Industrial and Engineering Chemistry Research
JF - Industrial and Engineering Chemistry Research
IS - 44
ER -