Nanotech 2011 Vol. 3
Nanotech 2011 Vol. 3
Nanotechnology 2011: Bio Sensors, Instruments, Medical, Environment and Energy

Water Technologies Chapter 8

Optimizing the removal of Heavy Metals of an artificial wastewater by electrocoagulation using response surface methodology

Authors: A. Suárez, N. Agudelo

Affilation: Universidad Libre, Colombia

Pages: 597 - 599

Keywords: electrocoagulation, wastewater, heavy metal removal

Abstract:
The Response Surface Methodology (RSM) was employed to investigate the effects of pH and current density on the removal of cadmium, copper and zinc in a artificial wastewater with a large COD by electrocoagulation technique. Six iron electrodes were used in a 2 l reactor with agitation. A regulated AC/DC power supply was used maintained a constant voltage/current. The initial samples were prepared with a COD of 10000 mg/l, oils and grease of 2000 mg/l, and heavy metals concentration of 250 mg/l. The initial and final concentrations were measured by atomic absorption spectrometer. Removal of more than 99% was obtained during the process for 60 minutes of application time. The conditions for optimal removal were at pH of 8 and a intensity of 3A for cadmium, pH of 7.02 and Intensity of 3 A for copper and zinc.

Optimizing the removal of Heavy Metals of an artificial wastewater by electrocoagulation using response surface methodology

ISBN: 978-1-4398-7138-6
Pages: 852
Hardcopy: $199.95