Journal of Applied and Natural Science 7 (2): 799-805 (2015)
Efficiency of aluminum and iron electrodes in removal of colour, turbidity and total suspended solid from biologically treated municipal wastewater
Arun Kumar Sharma* and A.K. Chopra
Department of Zoology and Environmental Sciences, Gurukula Kangri University, Haridwar - 249404 (Uttarakhand), INDIA
*Corresponding author. E-mail: firstname.lastname@example.org
Abstract :The present investigation was undertaken to observe the effect of different combinations of almunium and iron (Al-Al, Al-Fe, Fe-Fe and Fe-Al) electrodes on the removal of colour, turbidity (TD) and total suspended solids (TSS) of biologically treated municipal wastewater ( BTMW) using applied potential (V), operating time (OT) and initial pH. The maximum removal of colour (98.7 %) and TSS (96.89 %) was found with the use of Al-Al combination with optimum operating conditions (Voltage: 40 V; OT: 40 mins.; IED: 1.0 cm; EA: 160 cm2; initial pH: 7.5 and ST: 30 mins). It was interesting to note that TD of BTMW was completely removed at these optimal operating conditions. The economic evaluation of electrode combinations was observed to be in the order of Fe-Al (1.17 US $/m3)> Al-Fe (1.11 US $/m3)> Fe-Fe (1.08 US $/m3) >Al-Al (1.01 US $/m3) in terms of energy and electrode consumption. Thus, the BTMW can be effectively treated with the Al-Al electrode combination in comparison to other electrode combinations (Al-Fe , Fe-Fe and Fe-Al).
Keywords : Aluminium and iron electrodes, Economic evaluation Turbidity, Total suspended solids, Voltage