Co-treatment of hazardous compounds in anaerobic sewage sludge digesters

Download

index.pdf

Date

2008

Author

Özkan Yücel, Umay Gökçe

Metadata

Show full item record

Item Usage Stats

246
views

148
downloads

Xenobiotic compounds, which are exclusively man made, are produced in large quantities every year and released to the environment. Besides, anaerobic sludge digestion offers advantage in co-treatment of hazardous substances produced by the industry. The performance of the digesters can be monitored by modeling efforts. In this study, Anaerobic Digestion Model No.1 (ADM1) was calibrated, and validated for full-scale digester, lab-scale digester, and lab-scale digester seeded with totally different anaerobic biomass than that of full-scale digester. The model xenobiotic compound, a mono azo dye RO107, was co-treated with sewage sludge in an anaerobic digester. High removal efficiencies as 98% was found for azo dye at standard operating conditions of anaerobic digesters. The digester performance was not effected from azo dye or its reduction products. The dye reduction mechanism was modeled by biochemical mechanism due to unspecific enzymes and by chemical mechanism due to sulfide reduction. Some of the dye metabolites were suggested to be degraded by aerobic biotreatment. The anaerobic reduction metabolites of RO107 were identified as 2-(4-aminophenylsulfonyl) ethanol and 2,5-diamino-4-formamidobenzenesulfonic acid, and sulfanilic acid.

Subject Keywords

Environmental engineering.

URI

http://etd.lib.metu.edu.tr/upload/3/12609952/index.pdf
https://hdl.handle.net/11511/17998

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Investigation of PCB pollution: method validation and case studies from Ankara Akduman, Nazan; İmamoğlu, İpek; Department of Environmental Engineering (2009) Polychlorinated biphenyls (PCBs) are persistent organic pollutants which were not produced in Turkey, however both national and international studies illustrate a measurable amount of PCB pollution in receiving environments, aquatic fauna and people. In this study, various information sources such as the national and international scientific literature, official records and reports are investigated to obtain information regarding PCB pollution in Turkey. Furthermore, various PCB pollution analysis technique...
Anaerobic Digestability and Biogas Production Capacity of Pistachio Processing Wastewater in UASB Reactors Gur, E.; Demirer, Göksel Niyazi (American Society of Civil Engineers (ASCE), 2019-08-01) High volumes of wastewater with considerable levels of organic and phenolic compounds and solid material are produced during pistachio processing. There is not a commonly adopted treatment technology for the wastes produced during pistachio processing. The objective of this study is to evaluate the anaerobic digestability and biogas production capacity of pistachio processing wastewater in upflow anaerobic sludge blanket (UASB) reactors for the first time in the literature. The results indicated that pistac...
Modeling the water quality in Ulubat Lake Yenilmez, Firdes; Aksoy, Ayşegül; Department of Environmental Engineering (2007) Lakes can be used for recreational purposes, agricultural irrigation, domestic water supply or industrial use. However, these functions of the lakes can be impaired due to excess nutrient loadings from industrial facilities, agricultural activities, and discharge of wastewaters from sewage systems. Uluabat Lake is one of the important lakes in Turkey faced with water quality problems due to excess nutrient loading from point and non-point sources. In this study, Water Quality Analysis Simulation Program (WA...
Performance of ozone and peroxone on the removal of endocrine disrupting chemicals (EDCs) coupled with cost analysis Ölmez Hancı, Tuğba; Dogruel, S.; Emek, A. D. Allar; Yilmazer, C. Eropak; Cinar, S.; Kiraz, O.; Citil, E.; Orhon, A. Koc; Siltu, E.; Gucver, S. M.; Ozgun, O. Karahan; Tanık, Ayşe Gül; Yetiş, Ülkü (IWA Publishing, 2020-08-01) Micropollutants such as endocrine disruptors are one of the most important groups of chemicals polluting water resources. Conventional treatment systems may not be effective for the removal of endocrine disrupting chemicals (EDCs), and the fate of these chemicals should be carefully monitored in the effluent of wastewater treatment plants (WWTPs). Additional treatment methods such as advanced oxidation processes can be used for the removal of endocrine disruptors. This study presents the existence of endocr...
Identification of waste management strategies and waste generation factors for thermal power plant sector wastes in Turkey Demir, Cansu; Yetiş, Ülkü; Ünlü, Kahraman (SAGE Publications, 2019-03-01) Thermal power plants are of great environmental importance in terms of the huge amounts of wastes that they produce. Although there are process-wise differences among these energy production systems, they all depend on the logic of burning out a fuel and obtaining thermal energy to rotate the turbines. Depending on the process modification and the type of fuel burned, the wastes produced in each step of the overall process may change. In this study, the most expected process and non-process wastes stemming ...

Citation Formats

U. G. Özkan Yücel, “Co-treatment of hazardous compounds in anaerobic sewage sludge digesters,” Ph.D. - Doctoral Program, Middle East Technical University, 2008.