Participation of Electrochemical Steps in Treating Tannery Wastewater
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Participation of Electrochemical Steps in Treating Tannery Wastewater
|
|
| Creator |
Basha, C.A.
Soloman, P.A. Velan, M. Balasubramanian, N. Kareem, L.R. |
|
| Subject |
Pollution Control
|
|
| Description |
The performance of conventional biological treatment of tannery wastewater can be improved by the application
of electrochemical treatment to selected streams. In this study, soak liquor, tanning effluent, and post-tanning
effluent were electrochemically treated in batch recirculation mode. The experiments were designed, modeled,
and optimized using response surface methodology. Considerable removal of chemical oxygen demand (COD,
94.8%) was achieved by treating the soak liquor in a batch recirculation cell under conditions of a circulation
flow of 142.8 L h-1, a current density of 5.8 A dm-2, and a time of 7.05 h. Salt remaining in the treated soak
liquor was partly utilized in improving the ionic conductivity of the post-tanning effluent for electrochemical
treatment. In a separate treatment, the biodegradability index of the post-tanning effluent was improved from
0.3 to 0.67 under conditions of a circulation flow of 112.5 L h-1, a current density of 2.4 A dm-2, and a time
of 2.15 h. Considerable reduction in the requirement of reactor volume or residence time of the existing
aerated biological treatment system of the total wastewater stream can be achieved by applying such an
electrochemical pretreatment.
C. Ahmed Basha,*,† P. A. Soloman,‡ M. Velan,‡ N. Balasubramanian,‡ and L. Roohil Kareem
|
|
| Publisher |
American Chemical Society
|
|
| Date |
2009
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://cecri.csircentral.net/368/1/060-Partic-2009.pdf
Basha, C.A. and Soloman, P.A. and Velan, M. and Balasubramanian, N. and Kareem, L.R. (2009) Participation of Electrochemical Steps in Treating Tannery Wastewater. Industrial and Engineering Chemistry Research, 48 (22). pp. 9786-9796. ISSN 0888-5885 |
|
| Relation |
http://cecri.csircentral.net/368/
|
|