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Ozone: Science & Engineering
The Journal of the International Ozone Association
Volume 40, 2018 - Issue 2
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Original Articles

Treatment of Leather Dyeing Wastewater with Associated Process of Coagulation-Flocculation/Adsorption/Ozonation

Bianca MellaLaboratory for Leather and Environmental Studies (LACOURO), Chemical Engineering Department, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS90040-040, BrazilCorrespondence[email protected]
View further author information
,
Brunna Samuel de Carvalho BarcellosLaboratory for Leather and Environmental Studies (LACOURO), Chemical Engineering Department, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS90040-040, BrazilView further author information
,
Dimitrius Extralazon da Silva CostaLaboratory for Leather and Environmental Studies (LACOURO), Chemical Engineering Department, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS90040-040, BrazilView further author information
&
Mariliz GutterresLaboratory for Leather and Environmental Studies (LACOURO), Chemical Engineering Department, Federal University of Rio Grande do Sul (UFRGS), Porto Alegre, RS90040-040, BrazilView further author information
Pages 133-140 | Received 30 Jan 2017, Accepted 20 Jun 2017, Published online: 27 Jul 2017
 
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ABSTRACT

This study is based on the investigation of performance of associated wastewater treatments of coagulation-flocculation/adsorption (CF-ADS) and coagulation-flocculation/ozonation (CF-OZ) for the removal of pollutants from tannery wastewater. The chemical dosage was optimized and the use of waste from the tannery process was tested as a low-cost alternative adsorbent for wastewater treatment plants. For the CF-ADS the removal of TOC, COD, Na+ and color were 50.04%, 53.13%, 17.05% and 61.13%, respectively, and for the CF-OZ the removal were 46.50%, 56.25%, 11.10% and 85.34%. Also, BOD/COD and COD/TOC ratios were studied to verify the oxidation efficiency of the wastewater.

Acknowledgments

We are grateful to Tannery Fridolino Ritter Ltda for the samples of cattle hair waste.

Funding

We would like to express thanks for the scholarships provided by Brazilian Federal Agency for the Scholarship (CAPES) and to Financier of Studies and Projects (FINEP) – public call MCTI/FINEP CT-HIDRO 01/2013.

Additional information

Funding

We would like to express thanks for the scholarships provided by Brazilian Federal Agency for the Scholarship (CAPES) and to Financier of Studies and Projects (FINEP) – public call MCTI/FINEP CT-HIDRO 01/2013.

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