00000nam 2200000za 4500 9.841416 CaOODSP 20221107152101 cr ||||||||||| 170810s1971 oncd ob f000 0 eng d CaOODSP eng eng fre n-cn--- M34-20/127E-PDF M34-20/127 Gilmore, A. J. Recovery of copper and zinc from mine waste effluents with carboxylic-type ion-exchange resins [electronic resource] / A.J. Gilmore, Extraction Metallurgy Division. Ottawa : Information Canada, 1971. iii, 8 p. : charts Technical bulletin ; TB 127 Cover title. At head of title: Mines Branch program on environmental improvement. "December 1970." Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references. “The recovery of copper and zinc from synthesized mine waste effluents containing up to 7.0 g/l of total metal with the Rohm and Haas Limited carboxylic-type resins Amerlite IRC 50 and IRC 84 has been investigated. The adsorption characteristics of the resins from the Na+, NH4+ and H+ forms at feed pH values of from 3.6 to 6.0 were determined. The results of the work showed that under all conditions investigated the metals broke through very early in the adsorption cycle. An ion exchange operation run under these conditions to produce an effluent containing <0.1 ppm of metal could be expensive, due to high capital cost in equipment and resin inventory"--Abstract, p. i. Includes abstract in French. gccst Metals gccst Processing Canada. Natural Resources Canada. Canada. Mines Branch. Technical bulletin (Canada. Dept. of Energy, Mines and Resources. Mines Branch) TB 127 (CaOODSP)9.834857 PDF 1.27 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M34-20/M34-20-127-eng.pdf 300012