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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.19 [2012] >
IJCT Vol.19(1) [January 2012] >
| Title: | Removal of sub-micron size and dilute turbidity from service water by application of an electrochemical carbon filter |
| Authors: | Venkateswaran, G
Kumbhar, A G
Gokhale, B K
Balaji, V
Sarangi, N K
Sinha, A K
Gupta, M D P
Jawale, S B |
| Keywords: | Carbon Felt
Electrochemical Carbon Filter
Graphite Felt Filter
Turbidity |
| Issue Date: | Jan-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | A semi industrial scale graphite felt electrochemical
filter (ECF) assembly has been used to remove iron and silica turbidity from
domestic service water of Kalpakkam. Two test runs are performed. In the first
run 17.21 m3
of water is processed and 2.15 × 104 NTU-liter turbidity is removed
[inlet turbidity 1.67 NTU (nephelometric turbidity units), outlet turbidity 0.42
NTU, and efficiency 75%]. In the second run 6.67 m3 of water
is processed and 3.87 × 103 NTU-liter turbidity is removed (inlet
turbidity 0.85 NTU, outlet turbidity 0.27 NTU, and efficiency 68%). In this
process non-reactive silica removal efficiency of 50% is observed. Nearly
complete removal of E.coli is also
shown by ECF. It is observed that 600-1200 l/h flow rate and 5.0-8.0 V applied
potential with 1 ampere current are the optimized parameters for ECF operation.
Teflon is identified as non swelling material in water for the carbon felt
electrode isolation spacers and support plates. As ECF is exclusively used for
submicron filtration, a macro filter prior to it is must. The ECF has the
advantages of treating turbidity irrespective of the sign and magnitude of
charge on the turbidity particles as the applied potential can be maneuvered
accordingly. |
| Page(s): | 37-47 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.19(1) [January 2012]
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