PMID- 14527468
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20040622
LR  - 20190917
IS  - 0021-9797 (Print)
IS  - 0021-9797 (Linking)
VI  - 266
IP  - 2
DP  - 2003 Oct 15
TI  - Feasibility of surfactant-free supported emulsion liquid membrane extraction.
PG  - 430-7
AB  - Supported emulsion liquid membrane (SELM) is an effective means of conducting 
      liquid-liquid extraction. SELM extraction is particularly attractive for 
      separation tasks in the microgravity environment where density difference between 
      the solvent and the internal phase of the emulsion is inconsequential and a 
      stable dispersion can be maintained without surfactant. In this research, 
      dispersed two-phase flow in SELM extraction is modeled using the Lagrangian 
      method. The results show that the SELM extraction process in the microgravity 
      environment can be simulated on earth by matching the density of the solvent and 
      the stripping phase. The feasibility of surfactant-free SELM (SFSELM) extraction 
      is assessed by studying the coalescence behavior of the internal phase in the 
      absence of the surfactant. Although the contacting area between the solvent and 
      the internal phase in SFSELM extraction is significantly less than the area 
      provided by regular emulsion due to drop coalescence, it is comparable to the 
      area provided by a typical hollow-fiber membrane. Thus, the stripping process is 
      highly unlikely to become the rate-limiting step in SFSELM extraction. SFSELM 
      remains an effective way of achieving simultaneous extraction and stripping and 
      is able to eliminate the equilibrium limitation in the typical solvent extraction 
      processes. The SFSELM design is similar to the supported liquid membrane design 
      in some aspects.
FAU - Hu, Shih-Yao B
AU  - Hu SY
AD  - Department of Chemical and Biochemical Engineering, The University of Iowa, 4122 
      Seamans Center, Iowa City, IA 52242-1527, USA.
FAU - Li, Jin
AU  - Li J
FAU - Wiencek, John M
AU  - Wiencek JM
LA  - eng
PT  - Journal Article
PL  - United States
TA  - J Colloid Interface Sci
JT  - Journal of colloid and interface science
JID - 0043125
EDAT- 2003/10/07 05:00
MHDA- 2003/10/07 05:01
CRDT- 2003/10/07 05:00
PHST- 2003/10/07 05:00 [pubmed]
PHST- 2003/10/07 05:01 [medline]
PHST- 2003/10/07 05:00 [entrez]
AID - S0021979703004806 [pii]
AID - 10.1016/s0021-9797(03)00480-6 [doi]
PST - ppublish
SO  - J Colloid Interface Sci. 2003 Oct 15;266(2):430-7. doi: 
      10.1016/s0021-9797(03)00480-6.