Anammox: An option for ammonium removal in bioreactor landfills

Valencia, Roberto; Zon, W. van der; Woelders, Hans; Lubberding, Henk J.; Gijzen, Huub J.

doi:10.1016/j.wasman.2011.06.012

Cited by 28 publications

(8 citation statements)

References 45 publications

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“…Anammox was negated in the landfill bioreactor reported previously because the molar concentration of ammonia and nitrite was not equal in the recirculated leachate (Price et al;. However, anammox activity was detected by "accidental" air inlet in landfill leachate recirculated bioreactor fed with a high concentration of ammonia influent (Valencia et al 2011). To our knowledge, few other researches focused on anammox pathway for nitrogen removal in landfill leachate bioreactor.…”

Section: Discussionmentioning

confidence: 80%

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Nitrogen removal through different pathways in an aged refuse bioreactor treating mature landfill leachate

Xie

et al. 2012

Appl Microbiol Biotechnol

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In this study, an aged refuse bioreactor was constructed to remove nitrogen in a mature landfill leachate. The nitrogen removal efficiency and the microbial community composition in the bioreactor were investigated. The results showed that the aged refuse bioreactor removed more than 90 % of total nitrogen in the leachate under the nitrogen loading rate (NLR) of 0.74 g/kg (vs) day, and the total nitrogen removal rate decreased to 62.2 % when NLR increased up to 2.03 g/kg (vs) day. Quantitative polymerase chain reaction results showed that the average cell number of ammoniaoxidizing bacteria in the bioreactor was 1.58×10 8 cells/g, which accounted for 0.41 % of total bacteria. The number of anammox bacteria in the reactor was 1.09×10 8 cells/g, which accounted for 0.27 % of total bacteria. Isotopic 15 N tracing experiments showed that nearly 10 % of nitrogen was removed by anammox. High-throughout 454 pyrosequencing revealed that the predominant bacteria in the bioreactor were Proteobacteria, Chloroflexi, Actinobacteria, Bacteroidetes, and Gemmatimonadetes, including various nitrifiers and denitrifiers with diverse heterotrophic and autotrophic metabolic pathways, supporting that nitrogen was removed through different pathways in this aged refuse bioreactor.

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Section: Discussionmentioning

confidence: 80%

“…(Joss et al 2009;Kartal et al 2010). The anammox activity in recirculated bioreactor was confirmed as "accidental" running (Valencia et al 2011). However, the microbial community structure and its contribution to nitrogen removal as well as other denitrogen pathways were not studied in a landfill bioreactor so far.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen removal through different pathways in an aged refuse bioreactor treating mature landfill leachate

Xie

et al. 2012

Appl Microbiol Biotechnol

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“…Performances of these reaction networks are evaluated quantitatively with statistical criteria obtained by applying Bayesian inference with the DREAM algorithm [44,18]. We illustrate our generic approach by finding an optimal mechanistic model for describing a data set measured on a series of landfill lysimeters, 75 previously published by Valencia et al [36,37,35,38,39], by evaluating four possible reaction networks. Our aim is to find a description which we can apply to full-scale anaerobic landfills.…”

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confidence: 99%

A toolbox to find the best mechanistic model to predict the behavior of environmental systems

Turnhout

Kleerebezem

Heimovaara

2016

Environmental Modelling & Software

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Reliable prediction of the long-term behavior of environmental systems such as Municipal Solid Waste (MSW) landfills is challenging. While many driving forces influence this behavior, characterization of them is limited by measurement techniques. Therefore, a model structure for reliable prediction needs to optimally combine all measured information with suitable mechanistic information from literature. How to get such an optimal model structure? This study presents a toolbox to find and build the model structure that describes an environmental system as close as possible. The toolbox combines environmental frameworks to include all suitable mechanistic information; it fully couples kinetic and equilibrium reactions and contains multiple resources to obtain biogeochemical parameters. Several possible optimal model structures are quickly built and evaluated with objective statistical performance criteria obtained via Bayesian inference. By applying the novel methodology, we select the best model structure for anaerobic digestion of MSW in full scale landfills. Response to Reviewers: There were no comments from the reviewers.

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“…4. Ammonia (NH 3 -N) which is a product of the degradation of protein, usually accumulates in anaerobic environments due to the lack of biological nitrification-denitrification operation (Valencia et al, 2011). Hence, the concentration of NH 3 -N in both the simulated landfill bioreactor and the sand channel accrued continuously throughout the experiment.…”

Section: Resultsmentioning

confidence: 99%

Performance of Sand Channel as Pre-Treatment for Anaerobic Landfill Bioreactor Leachate and Biogas Generation

Olisa¹,

Sapari²,

Malakahmad³

et al. 2015

J. of Environmental Science and Technology

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The performance of a laboratory scale landfill bioreactor with two compartments (simulated landfill reactor and a sand channel) was investigated in this study. Solid waste components similar to the typical Malaysian waste were collected from the cafeterias in University Teknologi PETRONAS (UTP), Perak, Malaysia and used to generate leachate in the simulated landfill bioreactor. Leachate produced were slowly and systematically introduced into the bottom sand channel where methanogenesis rapidly occurred thereby resulting in a better stabilized system than the simulated landfill reactor. After 20 months of anaerobic incubation of both reactors, it was observed that the Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD 5 ) concentrations were lower in the sand channel while the pH values were higher than the simulated landfill reactor. Reduction in COD and BOD 5 in the sand channel were 88 and 90%, respectively. The pH of the simulated landfill reactor remained acidic at 6.2 while the pH of the sand channel was 7.9. Ammonia-nitrogen (NH 3 -N) concentration was also observed to be lower in the sand channel at 1435 mg LG 1 as against 1509 mg LG 1 in the simulated landfill bioreactor. The constituent methane gas percentage in the simulated landfill reactor and sand channel were 25 and 58%, respectively. The obtained result clearly indicates that the attachment of a sand channel to landfills can be applied for the degradation and reduction of organic pollutants in leachate while methane gas recovered is enhanced.

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Anammox: An option for ammonium removal in bioreactor landfills

Cited by 28 publications

References 45 publications

Nitrogen removal through different pathways in an aged refuse bioreactor treating mature landfill leachate

Nitrogen removal through different pathways in an aged refuse bioreactor treating mature landfill leachate

A toolbox to find the best mechanistic model to predict the behavior of environmental systems

Performance of Sand Channel as Pre-Treatment for Anaerobic Landfill Bioreactor Leachate and Biogas Generation

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