Chromium based compounds have extensive use in many industries like chrome tanning and electrochemical industries. Chromate ions (especially hexavalent; Cr⁺⁶) are toxic pollutants, as they are carcinogenic in nature and its removal from industrial waste water is important. Different methods have been employed for the removal of highly toxic chromium from effluents. Chemical process, electrochemical process and ion exchange process are various techniques for this removal. These methods work under two categories; some of them reduce hexavalent chromium to trivalent and then separates it and some remove hexavalent chromium as insoluble chromates or dichromate.

Present work is being undertaken to produce regeneration data for parameters like flow rate, concentration of the solution passed through resin bed and temperature using an anionic exchanger (Purolite A-400) after chromate removal. Atomic absorption spectrometer was used for the measurement of chromium concentration in resin.