Change of microbial community composition in anaerobic digesters during the degradation of nonylphenol diethoxylate

Date

2018-11-01

Author

Murdoch, Fadime Kara
Murdoch, Robert W.
Gültekin, Güzin Candan
Sanin, Faika Dilek

Metadata

Show full item record

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

Item Usage Stats

117
views

0
downloads

Nonylphenol polyethoxylate (NPnEO) surfactants, ubiquitous contaminants in sewage processing facilities, continue to receive attention due to their recalcitrance and diverse toxicity concerns. How the addition of nonyiphenol diethoxylate (NP2EO) and its biodegradation products affect microbial community structure in anaerobic semi-continuous digesters was investigated by molecular techniques. Fluorescence in situ hybridization (FISH) and quantitative PCR (qPCR) were used in parallel to monitor total Bacteria, four classes of Proteobacteria, total Archaea, and two genera of acetoclastic methanogens (Methanosarcina and Methanosaeta). Beta- and Gammaproteobacteria were the dominant phyla and the relative abundances of both groups were roughly doubled following NP2EO addition. While Methanosaeta was dominant over Methanosarcina throughout, NP2EO addition and accumulation of NP nearly doubled the relative abundance of Methanosarcina. While digester performance was not affected, this study revealed that relative abundances of the key players in anaerobic digestion were altered by the addition of NP2EO.

Subject Keywords

Waste Management and Disposal, Microbiology, Biomaterials

URI

https://hdl.handle.net/11511/47787

Journal

INTERNATIONAL BIODETERIORATION & BIODEGRADATION

DOI

https://doi.org/10.1016/j.ibiod.2018.09.002

Collections

Department of Food Engineering, Article

Suggestions

OpenMETU
Core

Effect of vadose zone on the steady-state leakage rates from landfill barrier systems ÇELİK, BİRTEN; Rowe, R. K.; Ünlü, Kahraman (Elsevier BV, 2009-01-01) Leakage rates are evaluated for a landfill barrier system having a compacted clay liner (CCL) underlain by a vadose zone of variable thickness. A numerical unsaturated flow model SEEP/W is used to Simulate the moisture flow regime and steady-state leakage rates for the cases of unsaturated zones with different soil types and thicknesses. The results of the simulations demonstrate that harmonic mean hydraulic conductivity of coarse textured vadose zones is 3-4 orders of magnitude less than saturated hydrauli...
A Laboratory Column Investigation for the Treatment of Cr(VI) with Zero-Valent Iron Uyusur, Burcu; Ünlü, Kahraman (Mary Ann Liebert Inc, 2009-02-01) Permeable reactive barrier (PRB) technology is commonly placed in the list of options for groundwater remediation at hazardous waste sites, where Cr(VI) treatment in groundwater has been a concern more than any other inorganic contaminants. The objective of this study was to investigate the effectiveness and longevity of Cr(VI) removal with zero-valent iron based PRBs. The main focus was on two parameters affecting the performance of Cr(VI) removal with PRBs: (1) amount of reactive media and (2) groundwater...
Anaerobic mesophilic digestion of waste activated sludge in the presence of 2,3 ',4,4 ',5-pentachlorobiphenyl Kaya, Devrim; İmamoğlu, İpek; Sanin, Faika Dilek (Elsevier BV, 2013-09-01) The aim of this study was to investigate the anaerobic digestion of waste activated sludge in the presence of a model PCB congener, 2,3',4,4',5-pentachlorobiphenyl (PCB-118), and transformer oil (TO), and thereby PCB dechlorination under mesophilic digestion conditions. Two PCB-118 concentrations (1 and 20 mg/L) and one TO concentration (1.52 g/L) were studied. Beside the PCB concentrations, pH, ORP, TS, VS, VSS, TSS, tCOD, and sCOD were monitored throughout the reactor operations (159-day). Methane product...
Use of rubber and bentonite added fly ash as a liner material Çokça, Erdal (Elsevier BV, 2004-01-01) In many countries regulations require all hazardous waste disposal facilities to be lined with suitable impermeable barriers to protect against contamination. In this study, a series of laboratory tests on rubber and bentonite added fly ash were conducted. The aim of the tests was to evaluate the feasibility of utilizing fly ash, rubber and bentonite as a low hydraulic conductivity liner material. Type C fly ash was obtained from Soma thermal power plant in Turkey; rubber in pulverized form was waste from t...
Evaluation of the hazardous waste landfill cap system design and clay layer thickness criteria of the Turkish Regulation on the Control of Hazardous Waste (RCHW) using the Hydrological Evaluation of Landfill Performance (HELP) model Piskin, F. Yalcin; Demirer, Göksel Niyazi (Inderscience Publishers, 2007-01-01) The hazardous waste landfill design criteria of the Turkish Regulation on the Control of Hazardous Waste (RCHW) was evaluated in this study. In the first part of the study, Hydrologic Evaluation of Landfill Performance (HELP) model was used to determine the significance of different components of the hazardous waste landfill cap system as required by the Turkish RCHW. In the second part of the study, the top and bottom clay layer thickness requirement of the Turkish RCHW was evaluated by running the HELP mo...

Citation Formats

F. K. Murdoch, R. W. Murdoch, G. C. Gültekin, and F. D. Sanin, “Change of microbial community composition in anaerobic digesters during the degradation of nonylphenol diethoxylate,” INTERNATIONAL BIODETERIORATION & BIODEGRADATION, pp. 1–8, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47787.