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Ozone: Science & Engineering
The Journal of the International Ozone Association
Volume 37, 2015 - Issue 6
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Original Articles

Ozone-Induced Biodegradability Enhancement and Color Reduction of a Complex Pharmaceutical Effluent

Suvidha GuptaEnvironmental Biotechnology Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur440020, Maharashtra, IndiaView further author information
,
T. SaratchandraEnvironmental Biotechnology Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur440020, Maharashtra, IndiaView further author information
,
Sameena MalikEnvironmental Biotechnology Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur440020, Maharashtra, IndiaView further author information
,
Abhinav SharmaEnvironmental Biotechnology Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur440020, Maharashtra, IndiaView further author information
,
Satish LokhandeAnalytical Instrumentation Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur440020, Maharashtra, IndiaView further author information
,
Vishal WaindeskarOzone Research & Applications (I) Pvt. Ltd., Nagpur440010, IndiaView further author information
&
Sandeep MudliarEnvironmental Biotechnology Division, CSIR-National Environmental Engineering Research Institute, Nehru Marg, Nagpur440020, Maharashtra, India;Plant Cell Biotechnology Division, CSIR-Central Food Technological Research Institute, Mysore570020, Karnataka, IndiaCorrespondence[email protected]
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Pages 538-545 | Received 03 Dec 2014, Accepted 15 Jun 2015, Published online: 16 Sep 2015
 
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Abstract

The treatment of a complex pharmaceutical effluent using a combination of ozonation and biological treatment is reported with the use of ozonation as a pre- and posttreatment. Pretreatment facilitated biodegradability index (BI = BOD/COD) enhancement of up to 0.44 along with COD and color reduction of up to 42% and 33%, respectively. Subsequent anaerobic biodegradation of effluent indicated negligible biogas generation; however, aerobic biodegradation of pretreated effluent resulted in COD reduction (73%) and color reduction (62%), which was also indicated by the biokinetic parameters. Further, ozonation as a posttreatment led to higher overall COD (87%) and color (93%) removal.

Additional information

Funding

Financial support (BT/PR-12511/BCE/08/03/2009) from the Department of Biotechnology (DBT), Government of India is duly acknowledged.

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