Abstract

DUPERLE YARURO, GLADYS; YESID PENA, DARIO  and  ESCALANTE HERNANDEZ, HUMBERTO. REDUCTION OF THE BARIUM CONCENTRATION PRESENT IN LIQUID EFLUENTS BY MEAN OF NON-DISPERSIVE EXTRACTION IN HOLLOW FIBER MODULES. Dyna rev.fac.nac.minas [online]. 2008, vol.75, n.155, pp. 133-144. ISSN 0012-7353.

This work has been focused on the study of the viability of Barium removal, present in a waste liquid phase, by means of Non-Dispersive Extraction (NDE) in Hollow Fiber Modules. An organic solution based on DEPHA (Bis-2-ethylhexyl phosphate) 30% (v/v), Isopropilic Alcohol 30% (v/v) and Kerosene is used as selective extraction medium. For the extraction process was made a contactor with five hollow microporous propilenic fibers. A solution contained 100 ppm of BaCl₂.H₂O, level concentration very equal as generated on the petroleum industrial wastes, is used as liquid phase. A efficiency of 95,25% is obtained when the NDE take place at pH = 9, and them 9 hours of process.

Keywords : Barium; Heavy Metals; Non-Dispersive Extraction; DEPHA; Microporous Hollow Fiber.