چكيده لاتين :
The removal of chromate ions in trace concentration fromtannery wastewatereffluent
using Ionexchange techniquewascarried out byvaryingparameterssuch as Chromate concentration
and contact time. A maximum of99% removal efficiency in the batch Ion exchange process was
achievedoveran equilibriumcontacttime of20min. The equilibriumuptakeof chromate wasconstant
at average9.8mglL forinitial chromateconcentrationof! Omg/L irrespective ofthe high concentration
of chloride and sulphate ions in the wastewater. This inferred that the interference of these co-ions
have no significant effect on the chromate uptake by the ions exchange resins used in this study.
While, in the column experiments high effectiveness in the removal of chromate ions in trace
concentration was observed.A removal efficiencyof98% of chromate removal was achieved even
in the presence ofhigh concentration of competing Ions. Obviously, this has shown the selectively
of the resin towards the chromate uptake. The ion-exchange technique was found to be appealing
forthe removaloftrace concentrationofchromatewhen in the backgroundthere is high concentration
of chloride and sulphate co-ions present in the tannery wastewater.
