Impact of biodegradation of organic matters on ammonia oxidation in compost

Zeng, Yang; Guardia, A. de; Ziebal, Christine; Macedo, Flávia Junqueira De; Dabert, Patrick

doi:10.1016/j.biortech.2013.02.038

Cited by 45 publications

(15 citation statements)

References 35 publications

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“…(). Compost was used as a control and is known as a microbial rich growing media constituent (Zeng et al ., ) and the mineral growing medium is known to have no microbial activity (RW, Rock wool, Grotop expert, Grodan). The blend was a mixture of sod peat (40% v/v), Irish peat (40% v/v) and coconut fibre (20% v/v).…”

Section: Methodsmentioning

confidence: 99%

“…Organic growing medium constituents, that is, sod peat, Irish peat, coconut fibre and compost were separately tested and used as potential inoculum for nitrifying culture as described by Saison et al (2006). Compost was used as a control and is known as a microbial rich growing media constituent (Zeng et al, 2013) and the mineral growing medium is known to have no microbial activity (RW, Rock wool, Grotop expert, Grodan). The blend was a mixture of sod peat (40% v/v), Irish peat (40% v/v) and coconut fibre (20% v/v).…”

Section: Growing Medium and Constituentsmentioning

confidence: 99%

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Growing media constituents determine the microbial nitrogen conversions in organic growing media for horticulture

Grunert

Reheul

Labeke

et al. 2016

Microbial Biotechnology

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SummaryVegetables and fruits are an important part of a healthy food diet, however, the eco‐sustainability of the production of these can still be significantly improved. European farmers and consumers spend an estimated €15.5 billion per year on inorganic fertilizers and the production of N‐fertilizers results in a high carbon footprint. We investigated if fertilizer type and medium constituents determine microbial nitrogen conversions in organic growing media and can be used as a next step towards a more sustainable horticulture. We demonstrated that growing media constituents showed differences in urea hydrolysis, ammonia and nitrite oxidation and in carbon dioxide respiration rate. Interestingly, mixing of the growing media constituents resulted in a stimulation of the function of the microorganisms. The use of organic fertilizer resulted in an increase in amoA gene copy number by factor 100 compared to inorganic fertilizers. Our results support our hypothesis that the activity of the functional microbial community with respect to nitrogen turnover in an organic growing medium can be improved by selecting and mixing the appropriate growing media components with each other. These findings contribute to the understanding of the functional microbial community in growing media and its potential role towards a more responsible horticulture.

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Section: Methodsmentioning

confidence: 99%

Section: Growing Medium and Constituentsmentioning

confidence: 99%

Growing media constituents determine the microbial nitrogen conversions in organic growing media for horticulture

Grunert

Reheul

Labeke

et al. 2016

Microbial Biotechnology

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“…2c), although nitrate formation could only be detected after thermophilic stages, when organic matter had significantly decreased and temperatures were lower. Both factors are known to have a negative effect on the first step (nitritation) of ammonium oxidation (Zeng et al, 2013). At the maturation stage, significantly greater amounts of nitrate were measured in the inoculated piles.…”

Section: Evolution Of Readily Available Organic Matter Fractionsmentioning

confidence: 96%

Enhanced turnover of organic matter fractions by microbial stimulation during lignocellulosic waste composting

Jurado

Suárez‐Estrella

López

et al. 2015

Bioresource Technology

166

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“…), and second, a strong competition between heterotrophic and nitrifying micro‐organisms during the active stage of intense biodegradation of OM (Zeng et al . ).…”

Section: Introductionmentioning

confidence: 97%

“…The consequence is that nitrification cannot serve as a sink for the NH 3 produced by the mineralization of organic nitrogen (N org ) and that a large part of it is stripped by aeration during the active stage of composting (Zeng et al 2012a). The late onset of nitrification may be due to, first, a very small quantity of nitrifying micro-organisms in the composted waste and their slow growth rate (Junier et al 2010), and second, a strong competition between heterotrophic and nitrifying micro-organisms during the active stage of intense biodegradation of OM (Zeng et al 2013). Several authors searched for ammonia oxidizers in composts.…”

Section: Introductionmentioning

confidence: 99%

Impact of the addition of a nitrifying activated sludge on ammonia oxidation during composting of residual household wastes

Zeng

Dabert²,

Roux³

et al. 2014

J Appl Microbiol

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The mixing of activated sludge with RHW before composting is a common practice on composting plants. This study proved the limitation of this practice to reduce ammonia emissions during composting via bioaugmentation of ammonia-oxidizing organisms. It correlated successfully the ammonia oxidation rate with different groups of ammonia oxidizers and explains the fail of promoting ammonia oxidation during the early stages of composting. It suggests Nit. europaea/eutropha and Nit. nitrosa-like AOB were the main contributors to ammonia oxidation during composting.

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Impact of biodegradation of organic matters on ammonia oxidation in compost

Cited by 45 publications

References 35 publications

Growing media constituents determine the microbial nitrogen conversions in organic growing media for horticulture

Growing media constituents determine the microbial nitrogen conversions in organic growing media for horticulture

Enhanced turnover of organic matter fractions by microbial stimulation during lignocellulosic waste composting

Impact of the addition of a nitrifying activated sludge on ammonia oxidation during composting of residual household wastes

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