DETER/vf!N,1 T!ON OF 1FIF.. CF:VEL OF CHR01HTU1Vf IN THJ:: DJSCTTARGED  • EFFLUENT OF BAHJR DAR TANNERY U!:>'ING lNDUCTJVJ::LY COUPLED  Pl.AS;\4A OP'n.CAL J.::WTSS!ON Sf'ECTHOSCOPYAND UV-VTSTBLE  •  •  BAHTR DAR UN1VERSTTY COLLEGE OF scrrxce  CfffiM1STRY J>EPAR1'l\1ENT  SPECTROI'HOTO?vfETRY

FIKIRTE, zewude

DETER/vf!N,1 T!ON OF 1FIF.. CF:VEL OF CHR01HTU1Vf IN THJ:: DJSCTTARGED • EFFLUENT OF BAHJR DAR TANNERY U!:>'ING lNDUCTJVJ::LY COUPLED Pl.AS;\4A OP'n.CAL J.::WTSS!ON Sf'ECTHOSCOPYAND UV-VTSTBLE • • BAHTR DAR UN1VERSTTY COLLEGE OF scrrxce CfffiM1STRY J>EPAR1'l\1ENT SPECTROI'HOTO?vfETRY

FIKIRTE, zewude

URI: http://hdl.handle.net/123456789/8765

Date: 2018-06-20

Abstract:

he level ofchromimn species (toto! chromium. C/'(111; and Cr(Vl)) i11 the disch<1rge(l effluent of' Bahir Dar 'l annery wue determined using two analytical methods. Tota! chromium concentration in the sampfc.. IJ.<ing ind1tc>live!1' coupled plasma optical emtssion spectroscopy (lCP-OES). the Cr(VI) level using UV-Vi8ih.le spectrophotometry and !hi• level of' Cr(/11) hy subtracting the TJV-Vis result from the /Cl'-OFS. 11w 10/a/ chromium concentration varies significamly in 1h1~ ,J'fr;.1enl before (S1j (81.4.J.0. ZO ppm) and after (.'>;j (1. 96-0.04 ppm! • .. ,_ I 1. 11\TRODUCTION Water is an essential for Imman survival and inreatment. the si,.dy sho .... cd the level oftotal chromium to he higher than the permissible level that could discharge to river waler (2 ppm} by Ethiopia. On tile other hand, die concemrauon •1' chromi11m(flj was 0.18·/J.U.04 and 0.084+0.0/ ppm before and after treatment showing that the c1}!ud11 discharges the carcinogenic chromium species in a level not above 1/Je recommended level by diffcrem coumries guideline» including Ethiopia .

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