The Synthetic Rutile (SR) plant operations, North Capel, produce electrostatic precipitator (ESP) fume and kiln scrubber residue. Typically ESP contains about 18 per cent Ti, 13 per cent Fe, 0.5 per cent Mn, eight per cent Si, six per cent Al, 16 per cent C, 0.9 per cent Zn, 0.6 per cent Pb, 300 ppm As, 300 ppm Cr and 5 ppm Cd. These wastes are held in a storage dam together with neutralised acid effluent (AE) liquor. A project was initiated to treat the fume and produce a benign residue that could be delivered to landfill, reducing dam space storage. Plant AE, containing free acid (9 - 14 g/L), Fe (6 - 7 g/L) and Mn (1 g/L), was used to leach ESP. The degree of extraction achieved for various elements include about 20 per cent Zn, almost 50 per cent As, five per cent Al, 0.4 per cent Pb and 15 per cent Cd. Extraction was most effective at pH <2. the resultant leachate was treated with lime (ph 4 6), to remove al, as, pb, cr; the remaining filtrate still rich in zn, fe and mn is suitable for fertiliser preparation. limestone could be used as a substitute for lime. alternatively pb and as could be removed from the ae leachate by jarosite precipitation. however, lime neutralisation was more effective. the residue from ae leaching still contained pb. tclp tests of the leach residue produced pb extraction significantly higher than the 0.1 ppm stipulated by class 2 landfill guidelines. other elements (eg as, cd, cr) successfully met the limits. further leaching of the residue with edta extracted up to 65 per cent of pb content. tclp tests on treated residue showed pb leaching potential of><0.05 ppm. based on pb content the residue fell just outside the class 2 limit. lead was removed from the leach circuit as the sulphate by acidification of edta leach liquor, allowing edta to be recycled. the study showed that one waste stream can be used to treat another and help reduce plant waste.>