SURFACE ENTRAPMENT OF TOXIC METALS FROM ELECTROPLATING WASTE AND THEIR POSSIBLE RECOVERY

Authors
AJMAL M SULAIMAN AM KHAN AH
Citation
M. Ajmal et al., SURFACE ENTRAPMENT OF TOXIC METALS FROM ELECTROPLATING WASTE AND THEIR POSSIBLE RECOVERY, Water, air and soil pollution, 68(3-4), 1993, pp. 485-492
Citations number
24
Categorie Soggetti
Environmental Sciences","Water Resources
Journal title
Water, air and soil pollution → ACNP
ISSN journal
00496979
Volume
68
Issue
3-4
Year of publication
1993
Pages
485 - 492
Database
ISI
SICI code
0049-6979(1993)68:3-4<485:SEOTMF>2.0.ZU;2-R
Abstract
Heavy metal ions such as Cr, Ni, Cu, Cd and Zn have been removed from the electroplating waste using Fe(III) hydroxide as adsorbent. The max imum removal of these metal ions (> 90%) occurred at pH 8 to 9. Remova l of SO42- (98%) occurred at pH 4. Anions were found to play a negativ e role in the adsorption phenomenon. Metal ion sorption has been found to decrease with increasing anionic concentrations. The methodology p roposed might provide an inexpensive and economical procedure for remo val and recovery of toxic metals from electroplating wastes.