MODELING OF DYE REDUCTION BY SLUDGE DIGESTION: COMBINED EFFECT OF BIOCHEMICAL AND CHEMICAL REDUCTION

Date

2017-07-01

Author

Ozkan-Yucel, Umay Gokce
Gökçay, Celal Ferdi

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

281
views

0
downloads

The kinetics of azo dye reduction based on combined effect of biochemical reduction by anaerobic mixed culture and chemical reduction with hydrogen sulfide was investigated. Hydrogen sulfide was produced by sulphate reducing bacteria existing in the anaerobic mixed culture. The effect of initial anaerobic biomass, initial substrate, and initial dye (Reactive Orange 107) concentrations on reduction kinetics were studied with batch assays. The municipal waste sludge was used as electron donating substrate for biochemical reduction. The microbial biomass and substrate concentration did not affect the dye reduction rates significantly. The reduction kinetics was suggested as combination of biochemical reduction by Monod kinetics and chemical reduction by first order decay kinetics. The proposed kinetic model was validated by batch experiments for initial dye concentrations of 100, 200, 400, 800, 1600 and 3200 mg/L. The model was verified by continuous reactor study at initial dye concentration of 200 mg/L.

Subject Keywords

Environmental Engineering, Pollution, Management, Monitoring, Policy and Law

URI

https://hdl.handle.net/11511/56421

Journal

ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL

DOI

https://doi.org/10.30638/eemj.2017.167

Collections

Department of Environmental Engineering, Article

Suggestions

OpenMETU
Core

Merits of ozonation and catalytic ozonation pre-treatment in the algal treatment of pulp and paper mill effluents Balcioglu, I. Akmehmet; Tarlan, E.; Kivilcimdan, C.; Sacan, M. Tuerker (Elsevier BV, 2007-12-01) Since the performance of algal treatment for pulp mill effluent decreases with increasing color intensity and AOX content, which mainly originate from the chlorine bleaching of Kraft pulp, the separated CEH bleaching effluent was pre-treated by both the conventional and the heterogeneous catalytic ozonation processes. An increase in the BOD5/COD, ratio from 0.11 to 0.28 and 87% color abatement in terms of Pt-Co were achieved by catalytic ozonation, which had the best treatment performance. Biodegradability ...
Assessment of diffusive and convective mechanisms during carbon dioxide sequestration into deep saline aquifers Özgür, Emre; Gümrah, Fevzi; Department of Petroleum and Natural Gas Engineering (2006) The analytical and numerical modeling of CO2 sequestration in deep saline aquifers having different properties was studied with diffusion and convection mechanisms. The complete dissolution of CO2 in the aquifer by diffusion took thousands, even millions of years. In diffusion dominated system, an aquifer with 100 m thickness saturated with CO2 after 10,000,000 years. It was much earlier in convective dominant system. In diffusion process, the dissolution of CO2 in aquifer increased with porosity increase; ...
Application of two receptor models for the investigation of sites contaminated with polychlorinated biphenyls : positive matrix factorization and chemical mass balance Demircioğlu, Filiz; İmamoğlu, İpek; Department of Environmental Engineering (2010) This study examines the application of two receptor models, namely Positive Matrix Factorization (PMF) and Chemical Mass Balance (CMB), on the investigation of sites contaminated with PCBs. Both models are typically used for apportionment of pollution sources in atmospheric pollution studies, however have gained popularity in the last decade on the investigation of PCBs in soil/sediments. The aim of the study is four-fold; (i) to identify the status of PCB pollution in Lake Eymir area via sampling and analy...
Modeling anaerobic dechlorination of polychlorinated biphenyls Demirtepe, Hale; İmamoğlu, İpek; Department of Environmental Engineering (2012) This study aims to investigate the fate of polychlorinated biphenyls (PCBs) in sediments via using an anaerobic dechlorination model (ADM). PCBs are ubiquitous environmental pollutants, accumulated mostly in aquatic sediments. Significant attention was placed on the anaerobic dechlorination of PCBs since this process leads to the conversion of highly-chlorinated biphenyls to lower chlorinated ones, resulting in less toxic and more biodegradable congeners. An ADM was developed previously for the identificati...
Evaluation of PCB dechlorination pathways in anaerobic sediment microcosms using an anaerobic dechlorination model Demirtepe, Hale; Kjellerup, Birthe; Sowers, Kevin R.; İmamoğlu, İpek (Elsevier BV, 2015-10-15) A detailed quantitative analysis of anaerobic dechlorination (AD) pathways of polychlorinated biphenyls (PCBs) in sediment microcosms was performed by applying an anaerobic dechlorination model (ADM). The purpose of ADM is to systematically analyze changes in a contaminant profile that result from microbial reductive dechlorination according to empirically determined dechlorination pathways. In contrast to prior studies that utilized modeling tools to predict dechlorination pathways, ADM also provides quant...

Citation Formats

U. G. Ozkan-Yucel and C. F. Gökçay, “MODELING OF DYE REDUCTION BY SLUDGE DIGESTION: COMBINED EFFECT OF BIOCHEMICAL AND CHEMICAL REDUCTION,” ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL, pp. 1543–1550, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/56421.