Estimation of Anaerobic Debromination Rate Constants of PBDE Pathways Using an Anaerobic Dehalogenation Model

Date

2017-04-01

Author

KARAKAS, Filiz
İmamoğlu, İpek

Metadata

Show full item record

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

Item Usage Stats

239
views

0
downloads

This study aims to estimate anaerobic debromination rate constants (k(m)) of PBDE pathways using previously reported laboratory soil data. k(m) values of pathways are estimated by modifying a previously developed model as Anaerobic Dehalogenation Model. Debromination activities published in the literature in terms of bromine substitutions as well as specific microorganisms and their combinations are used for identification of pathways. The range of estimated k(m) values is between 0.0003 and 0.0241 d(-1). The median and maximum of k(m) values are found to be comparable to the few available biologically confirmed rate constants published in the literature. The estimated k(m) values can be used as input to numerical fate and transport models for a better and more detailed investigation of the fate of individual PBDEs in contaminated sediments. Various remediation scenarios such as monitored natural attenuation or bioremediation with bioaugmentation can be handled in a more quantitative manner with the help of k(m) estimated in this study.

Subject Keywords

Bioremediation, Anaerobic dehalogenation model, Polybrominated diphenyl ethers, Anaerobic debromination rate constant

URI

https://hdl.handle.net/11511/38407

Journal

BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY

DOI

https://doi.org/10.1007/s00128-016-2026-x

Collections

Department of Environmental Engineering, Article

Suggestions

OpenMETU
Core

Estimation of rate constants of PCB dechlorination reactions using an anaerobic dehalogenation model KARAKAS, Filiz; İmamoğlu, İpek (Elsevier BV, 2017-02-15) This study aims to estimate anaerobic dechlorination rate constants (k(m)) of reactions of individual PCB congeners using data from four laboratory microcosms set up using sediment from Baltimore Harbor. Pathway km values are estimated by modifying a previously developed model as Anaerobic Dehalogenation Model (ADM) which can be applied to any halogenated hydrophobic organic (HOC). Improvements such as handling multiple dechlorination activities (DAs) and co-elution of congeners, incorporating constraints, ...
Analysis and calculation of the magnetization, magnetic susceptibility and the specific heat close to phase transitions in heterometallics Dugan, E. Kilit; Yurtseven, Hasan Hamit (Elsevier BV, 2019-10-01) The temperature dependence of the magnetization for DMFeNi and DMFeCu is calculated by the molecular field theory and it is also analyzed as functions of temperature and the magnetic field by the power-law formulae close to the phase transitions in these compounds by using the observed data from the literature. From the analysis, values of the critical exponents beta (temperature-induced order parameter at H = 100 Oe) and delta (field-induced order parameter at T = 2 K) are deduced. Also, using the observed...
Comparison of different yield criteria in various deep drawn cups Cogun, Ferah; Darendeliler, Haluk (Springer Science and Business Media LLC, 2017-03-01) The aim of the study is to evaluate the performance of three recent yield criteria namely; BBC2008-8p, Yld2003-8p, Hu2003 through the simulation of the hemispherical, cylindrical and square cup drawing processes by comparing the results with the ones obtained by using the von Mises criterion for the isotropic, kinematic and combined hardening and the Hill'48 criterion. For this purpose, two different sheet materials, SS304 stainless steel and DKP6112 steel, and various punch travels were used in the simulat...
Calculation of the specific heat from the Raman frequency shifts close to the tricritical and second order phase transitions in NH4Cl Kaya, D.; Yurtseven, Hasan Hamit (Elsevier BV, 2007-05-01) This study gives our calculation for the specific heat using our Raman frequency shifts of the v(5) (174 cm(-1)) mode close to the tricritical (P = 1.6 kbar) and second order (P = 2.8 kbar) phase transitions in NH4Cl. For this calculation we use as the values of the critical exponent for the specific heat, a = 0.11 (T < T-c and T > T-c) for the tricritical (T-c = 257.17 K), and a = 0.18 (T < T-c), a = 0.64 (T > T-c) for the second order (T-c = 268 K) phase transitions, which we deduce from our analysis of t...
Estimation of state transition matrix in the Kalman filter based inverse ECG solution with the help of training sets Ters EKG probleminin Kalman filtre ile çözümünde durum geçiş matrisinin eǧitici kümeler yardimi ile kestirimi Aydin, Ümit; Serinağaoğlu Doğrusöz, Yeşim (2009-10-27) At this study the main motivation is to solve inverse problem of ECG with Kalman filter. In order to obtain feasible solutions determination of the state transition matrix (STM) correctly is vital. In literature the STM is usually found by using the test data itself which is not a realistic scenario. The major goal of this study is to determine STM without using test data. For that purpose a two stage method is suggested. At the first step the probability density function (pdf) is calculated using training ...

Citation Formats

F. KARAKAS and İ. İmamoğlu, “Estimation of Anaerobic Debromination Rate Constants of PBDE Pathways Using an Anaerobic Dehalogenation Model,” BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, pp. 582–587, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38407.