M. Ajmal et al., Removal and recovery of heavy metals from electroplating wastewater by using Kyanite as an adsorbent, J HAZARD M, 87(1-3), 2001, pp. 127-137
Kyanite, a commercial mineral has been utilized as an adsorbent for the rem
oval of heavy metals, such as Ni(II), Zn(II), Cr(VI) and Cu(II) from electr
oplating wastewater. The effect of contact time, pH, concentration, adsorbe
nt doses, particle size of the adsorbent, salinity and hardness, both in na
tural and wastewater on the adsorption of Cu(II) have been studied in detai
l. The adsorption of metal ions seems to be an ion exchange process. The ad
sorbed metals ions from electroplating wastewater were recovered by batch a
s well as column operation using dilute HCl solution. The column operation
was found to be more effective compared to batch process. (C) 2001 Elsevier
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