Biotic methane oxidation within an instrumented experimental landfill cover

Jugnia, Louis‐B.; Cabral, Alexandre R.; Greer, Charles W.

doi:10.1016/j.ecoleng.2008.02.003

Cited by 74 publications

(43 citation statements)

References 44 publications

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“…Visvanathan et al (1999) found that maximum oxidation occurs at depths of 15 to 40 cm, while Börjesson and Svensson (1997) found that 50 to 60 cm is the optimum depth for maximum CH 4 oxidation. A study conducted by Jones and Nedwell (2006) stated that the maximum CH 4 oxidation occurred at depths from 10 to 30 cm, while Jugnia et al (2008) stated that 0-10 cm is the optimal depth for CH 4 oxidation activity. William and Zobell (1949) reported that O 2 concentrations between 10 to 40% produce the highest range of CH 4 oxidation rates (Table 1), with an increase or decrease in O 2 concentration outside this range decreasing the CH 4 oxidation rate.…”

Section: Oxygen Concentrationmentioning

confidence: 99%

“…A typical bio-cover system consists of a highly porous gas distribution layer above the waste, often gravel or crushed glass, followed by a compost-amended layer. The thickness of the gas distribution layer usually ranges from 10 to 30 cm (Jugnia et al, 2008;Stern et al, 2007), while the compost layer in the upper part is thicker, up to 100 cm or more, to attain high oxidation capacity. The gas distribution layer above the waste results in uniform LFG fluxes to the bio-cover layer, which permits biological activity to occur in a typical manner (Fig.…”

Section: Bio-covermentioning

confidence: 99%

“…A value of 0 to 10% of CH 4 oxidation has been recommended by the Intergovernmental Panel on Climate Change (IPCC) guidelines for national GHG inventories. However, laboratory and field studies indicates that the CH 4 oxidation capacity is between 0 and 100% (Jugnia et al, 2008). Conversely, Bogner et al (1995) stated that landfill cover soil under certain conditions can be a sink for atmospheric CH 4 .…”

Section: Introductionmentioning

confidence: 99%

“…6). Many researchers have attempted to reduce landfill CH 4 emissions to the atmosphere using bio-cover systems (Shangari and Agamuthu, 2012;Bogner et al, 2010;Abichou et al, 2009;Huber-Humer, 2009;Jugnia et al, 2008;Stern et al, 2007;Bogner et al, 2005;Huber-Humer, 2004;Hilger and Humer, 2003;Humer and Lechner, 2001;Humer and Lechner, 1999). Their results show high CH 4 oxidation capacity in diverse, mature and well-structured compost materials, in both laboratory investigations (Abichou et al, 2009;Stern et al, 2007) and field trials (Bogner et al, 2005;HuberHumer, 2004;Humer and Lechner, 2001;Humer and Lechner, 1999).…”

Section: Bio-covermentioning

confidence: 99%

See 3 more Smart Citations

Methane Oxidation in Landfill Cover Soils: A Review

Abushammala¹,

Basri²,

Irwan³

et al. 2014

Asian J. Atmos. Environ

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Migration of methane (CH 4 ) gas from landfills to the surrounding environment negatively affects both humankind and the environment. It is therefore essential to develop management techniques to reduce CH 4 emissions from landfills to minimize global warming and to reduce the human risks associated with CH 4 gas migration. Oxidation of CH 4 in landfill cover soil is the most important strategy for CH 4 emissions mitigation. CH 4 oxidation occurs naturally in landfill cover soils due to the abundance of methanotrophic bacteria. However, the activities of these bacteria are influenced by several controlling factors. This study attempts to review the important issues associated with the CH 4 oxidation process in landfill cover soils. The CH 4 oxidation process is highly sensitive to environmental factors and cover soil properties. The comparison of various biotic system techniques indicated that each technique has unique advantages and disadvantages, and the choice of the best technique for a specific application depends on economic constraints, treatment efficiency and landfill operations.

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Section: Oxygen Concentrationmentioning

confidence: 99%

Section: Bio-covermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Bio-covermentioning

confidence: 99%

See 2 more Smart Citations

Methane Oxidation in Landfill Cover Soils: A Review

Abushammala¹,

Basri²,

Irwan³

et al. 2014

Asian J. Atmos. Environ

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show abstract

“…Researchers [21][22][23][24][25][26][27][28][29] have described various methods for methane removal from landfills.…”

Section: Introductionmentioning

confidence: 99%

Control of Landfill Gases Emission with Particular Emphasis on Btex

Staszewska¹,

Pawłowska²

2012

Ecological Chemistry and Engineering S

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Abstract:Landfilling is the most popular way for waste disposal and has been widely applied globally. A large quantity of volatile organic compounds (VOCs) is released from landfills. Among them, BTEX (benzene, toluene ethylbenzene and xylene) is a major group of pollutants, which have now become a cause for concern worldwide because of their toxic properties. For this reason, strict regulations have come into force which induce researchers to find methods to reduce their emissions. This article contains descriptions of several aerobic metabolic pathways for the degradation of BTEX, which are provided by two enzymatic systems (dioxygenases and monooxygenases). Special attention was paid to biofiltration -a method for improving the efficiency of treatment of BTEX released from landfills.Keywords: landfilling, biogas, BTEX degradation, biofiltration, ortho-cleavage pathway, meta-cleavage pathway IntroductionEuropean Union policy pays great attention to sustainable development ie balancing economic development with quality of environment and quality of life in such a way that intra-and intergenerational justice should be assured. Most resources will be exhausted in the foreseeable future and emissions of greenhouse gases accelerate climate change. In according to Lindzen [1] climate change would not be so catastrophic. Nevertheless careful, more balanced management future development of our civilisation is of great importance [2][3][4][5][6]. Among these problems, greenhouse gas emissions have attracted most interest [1,7,8]. One major source of greenhouse gas emissions, particularly of methane, is landfill gas.Landfilling is the most widely adopted practice for municipal solid waste disposal because it is the most economical waste management strategy currently available. Approximately 75% of municipal waste is composed of biodegradable organic materials. Different types of materials decompose at different rates. Food waste is hydrolyzed at the fastest rate among all substrates. Paper, cardboard, wood, textiles are slowly degraded while [9,10]. In the landfills, gaseous products are formed which are harmful to the environment. The most burdensome of these is methane, which content ranges from 48 to 65% (vol/vol) [11]. Landfills are estimated to contribute 11÷32 Tg CH 4 /year into the atmosphere [12,13]. In situations where the CH 4 concentration is lower than 30% an economical and ecologically applicable way to remove it is via biological oxidation using methanotrophic bacteria [12,14]. A simplified scheme for the reaction by which methanotrophs oxidise CH 4 is as follows [15,16]: CH 4 + 2O 2 → CO 2 + 2H 2 O Besides methane (Table 1), landfill gas also contains other harmful substances such as non-methane organic compounds detrimental to human health and psychological comfort. According to the EPA report [17] 39% of Non-methane Organic Compounds (NMOC) produced in landfills are VOCs. In the group of VOCs emitted from landfills most common are: benzene, toluene, ethylbenzene and xylenes (o-, m-, p-xylene) (BTEX). I...

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Calcium carbonate precipitation by cave bacteria isolated from Kashmir Cave, Khyber Pakhtunkhwa, Pakistan

Jan

Zada

Rafiq

et al. 2022

Microscopy Res & Technique

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The participation of numerous physicochemical and biological functions maintains the evolution and expansion of the remarkable nature. Due to its vast applicability in several engineering disciplines, naturally occurring bio-mineralization or microbially induced calcium carbonate (MICP) precipitation is attracting more interest. Cave bacteria contribute to the precipitation of calcium carbonate (CaCO 3 ). In the present study, soil sediments were collected from Kashmir cave, KPK, Pakistan, and plated on B4 specific nutrients limited medium for bacterial isolation and the viable bacterial count was calculated. Three bacterial strains named were capable of precipitating CaCO 3 . These bacterial isolates were identified through 16S rRNA gene sequencing and strain GSN-11 was identified as Bacillus toyonensis, TFSN-14 as Paracoccus limosus and TFSN-15 as Brevundimonas diminuta. Enhanced CaCO 3 precipitation potential of these bacteria strains was observed at 25 C and pH 5. The precipitated CaCO 3 was confirmed by scanning electron microscopy, X-ray powder diffraction, and Fourier transform infra-red spectroscopy. The findings showed that the precipitates were dominated by calcite, aragonite, and nanosize vaterite. Current research suggests that precipitation of CaCO 3 by proteolytic cave bacteria is widespread in Kashmir cave and these bacterial communities can actively contribute to the formation of CaCO 3 by enhancing the pH of the microenvironment. Research Highlights• Kashmir cave inhabit potentially active bacteria in terms of biogeochemical processes.• Cave bacteria significantly precipitated CaCO 3 .• Calcite, aragonite, and nanosize vaterite were dominant in precipitates.

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Biotic methane oxidation within an instrumented experimental landfill cover

Cited by 74 publications

References 44 publications

Methane Oxidation in Landfill Cover Soils: A Review

Methane Oxidation in Landfill Cover Soils: A Review

Control of Landfill Gases Emission with Particular Emphasis on Btex

Calcium carbonate precipitation by cave bacteria isolated from Kashmir Cave, Khyber Pakhtunkhwa, Pakistan

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