TITLE

Model based evaluation of a contaminant plume development under aerobic and anaerobic conditions in 2D bench-scale tank experiments

AUTHOR(S)
Ballarini, E.; Beyer, C.; Bauer, R.; Griebler, C.; Bauer, S.
PUB. DATE
June 2014
SOURCE
Biodegradation;Jun2014, Vol. 25 Issue 3, p351
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The influence of transverse mixing on competitive aerobic and anaerobic biodegradation of a hydrocarbon plume was investigated using a two-dimensional, bench-scale flow-through laboratory tank experiment. In the first part of the experiment aerobic degradation of increasing toluene concentrations was carried out by the aerobic strain Pseudomonas putida F1. Successively, ethylbenzene (injected as a mixture of unlabeled and fully deuterium-labeled isotopologues) substituted toluene; nitrate was added as additional electron acceptor and the anaerobic denitrifying strain Aromatoleum aromaticum EbN1 was inoculated to study competitive degradation under aerobic / anaerobic conditions. The spatial distribution of anaerobic degradation was resolved by measurements of compound-specific stable isotope fractionation induced by the anaerobic strain as well as compound concentrations. A fully transient numerical reactive transport model was employed and calibrated using measurements of electron donors, acceptors and isotope fractionation. The aerobic phases of the experiment were successfully reproduced using a double Monod kinetic growth model and assuming an initial homogeneous distribution of P. putida F1. Investigation of the competitive degradation phase shows that the observed isotopic pattern cannot be explained by transverse mixing driven biodegradation only, but also depends on the inoculation process of the anaerobic strain. Transient concentrations of electron acceptors and donors are well reproduced by the model, showing its ability to simulate transient competitive biodegradation.
ACCESSION #
95660035

 

Related Articles

  • Ozonation of sewage sludge prior to anaerobic digestion. Weemaes, M.; Grootaerd, H.; Simoens, F.; Huysmans, A.; Verstraete, W. // Water Science & Technology;2000, Vol. 42 Issue 9, p175 

    Presents the results of an oxidative pretreatment with ozone to disintegrate the sludge cells and increase their biodegradability. Anaerobic digestion of the ozonized sludge; Anaerobic digestion of the sediment of ozonized sludge; Aerobic treatment of the supernatant; Reduction in digestor...

  • The intensification of sludge digestion by the disintegration of activated sludge and the thermal conditioning of digested sludge. Dohanyos, M.; Zabranska, J.; Jenicek, P.; Stepova, J.; Kutil, V.; Horejs, J. // Water Science & Technology;2000, Vol. 42 Issue 9, p57 

    Studies the anaerobic degradation of different disintegrated materials containing a cell lysate produced by a disintegration of excess activated sludge. Improvement in methane yield and biodegradability of the thickened activated sludge; Rapid thermal treatment; Production of a material with an...

  • Anaerobic digestion. Stranks, Jeremy // A-Z of the Environment;2008, p17 

    Information about anaerobic digestion which is referred to the breaking down of organic matter in oxygen free conditions is presented.

  • Kinetics of BTEX degradation in a packed-bed anaerobic reactor. DeNardi, Ivana Ribeiro; Zaiat, Marcelo; Foresti, Eugenio // Biodegradation;Feb2007, Vol. 18 Issue 1, p83 

    The ever-increasing diversity of industrial activity is responsible for the discharge of compounds that are toxic or difficult to degrade into the environment. Some of the compounds found in surface and ground waters, usually deriving from the contamination of oil-based products, are benzene,...

  • Anaerobic Biodegradability of Selected Biodegradable Plastics and Biobased Products. El-Mashad, Hamed M.; Zhang, Ruihong; Greene, Joseph P. // Journal of Environmental Science & Engineering: A;Jan2012, Vol. 1 Issue 1A, p108 

    This study was conducted to investigate the biodegradability of six biodegradable plastic products and two cellulose-based products that are commercially available in the United States. The six biodegradable plastics included four films, one straw and one cup. The four plastic films (namely...

  • Effect of Ultrasonic, Microwave and Combined Microwave-Ultrasonic Pretreatment of Municipal Sludge on Anaerobic Digester Performance. Yeneneh, Anteneh; Chong, Siewhui; Sen, Tushar; Ang, Ha; Kayaalp, Ahmet // Water, Air & Soil Pollution;May2013, Vol. 224 Issue 5, p1 

    Anaerobic digestion is one of the most effective means for the stabilisation of sludge. However, it has a very slow rate-limiting hydrolysis phase which is attributed to the low biodegradability of cell walls and the presence of extracellular biopolymers. This study aims at investigating the...

  • Biodegradation of xenobiotics by anaerobic bacteria. Zhang, Chunlong; Bennett, George N. // Applied Microbiology & Biotechnology;Jun2005, Vol. 67 Issue 5, p600 

    Xenobiotic biodegradation under anaerobic conditions such as in groundwater, sediment, landfill, sludge digesters and bioreactors has gained increasing attention over the last two decades. This review gives a broad overview of our current understanding of and recent advances in anaerobic...

  • Factors influencing the degradation of garbage in methanogenic bioreactors and impacts on biogas formation. Morita, Masahiko; Sasaki, Kengo // Applied Microbiology & Biotechnology;May2012, Vol. 94 Issue 3, p575 

    Anaerobic digestion of garbage is attracting much attention because of its application in waste volume reduction and the recovery of biogas for use as an energy source. In this review, various factors influencing the degradation of garbage and the production of biogas are discussed. The surface...

  • Biodegradation of olive-mill pomace mixed with organic fraction of municipal solid waste. Ağdağ, Osman // Biodegradation;Sep2011, Vol. 22 Issue 5, p931 

    This study investigated the effects of organic fraction of municipal solid waste (OFMSW) addition on the anaerobic treatment of the olive-mill pomace. Biodegradability of olive-mill pomace mixed with OFMSW was examined in anaerobic bioreactors. Only OFMSW was loaded in the first (control)...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics