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실관막 모듈에서 Lix84에 의한 중금속 투과추출 제거
최대웅(Dai Woong Choi),신군섭(Kun Sub Shin) 한국환경보건학회 1999 한국환경보건학회지 Vol.25 No.1
Hollow fiber module contactor can be designed to provide a very high surface area per unit volume, which makes them very effective in comparison to conventional extraction equipment. Since the phases are separated by the membranes, the loading, flooding, and channeling constraints of conventional equipment are avoided. The optimum conditions for the change of H^+ concentration in heavy metal(Cu(II), Ni(II), Pb(II), Zn(II), Cd(II)) solution, the change of flow rate inside-outside hollow fiber membrane and the removal of heavy metal by the sort of extractant(Lix84-n-heptane, TOA-n-heptane, D2EHPA-n-heptane) were examined through perstraction of aqueous phase heavy metal from the hollow fiber module by organic extractant. Lix84 showed the best efficiency to Cu(II) extraction among a few kind of used extractant
최대웅 東義大學校 産業技術開發硏究所 1997 産業技術硏究誌 Vol.11 No.-
This study examines NI?? Liq-Liq Extraction by the microporous hollow fiber membrane, using D2EHPA as the metal extractant. After doing the experiments on the variation of H' concentration, flow rate and D2EHPA concentration which have important effects on Liq-Liq Extraction, it is known that the mass transfer increases as the flow rate and D2EHPA concentration increase when H' concentration is 10?? mol/d㎥ and for the Ni(II)-D2EHPA system, when H concentration is 10?? mol/d㎥ , kw is 12.64x10?? cm/sec.