Cadmium removal from industrial effluents by cementation with zinc powder Online publication date: Sat, 13-Dec-2014
by Solange Sousa; Jorge Rodrigues De Carvalho; Maria Joana Neiva Correia
International Journal of Environment and Waste Management (IJEWM), Vol. 9, No. 3/4, 2012
Abstract: This work presents the study of the cementation with zinc of a cadmium containing effluent, as an alternative process to chemical precipitation. The effluent, which was produced in the regeneration cycle of the ion-exchange columns of a metal plating waste-water treatment plant, contains: [Cd(II)] = 3500 mg/L; [Cr(III)] = 1230 mg/L; [Cu(II)] = 4575 mg/L; [Fe(II)] = 985 mg/L; [Zn(II)] = 325 mg/L and a pH. To minimise the consumption of zinc it is convenient to carry out the cementation at pH ≥ 4 to obtain an effluent containing 1.5 mg/L of cadmium, 0.1 mg/L of chromium, 0.1 mg/L of copper, 0.3 mg/L of iron and 3850 mg/L of zinc.
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Environment and Waste Management (IJEWM):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email subs@inderscience.com