Influence of aeration rate on nitrogen dynamics during composting

Guardia, A. de; Petiot, C.; Rogeau, Didier; Druilhe, Céline

doi:10.1016/j.wasman.2007.02.007

Cited by 105 publications

(45 citation statements)

References 35 publications

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“…Aeration rate and turning frequency have been shown to influence nitrogen dynamics through both volatilization and leaching (de Guardia et al, 2008;Parkinson et al, 2004); as was likely the case in this study. However, Fukumoto et al (2003) found that gas emission rates were also related to the size, scale and temperature of compost piles.…”

Section: Nitrogen Dynamicssupporting

confidence: 58%

Effect of turning frequency and season on composting materials from swine high-rise facilities

et al. 2015

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a b s t r a c tComposting swine slurries has several advantages, liquid slurries are converted to solids at lower moisture, the total volume and weight of material is reduced and the stabilized product is more easily transported off-site. Despite this, swine waste is generally stored, treated and applied in its liquid form. High-rise finishing facilities (HRFF) permit liquid slurries to be converted to solids which are partially decomposed underneath the HRFF and then finished in compost windrows. The purpose of this study was to evaluate the effect of turning frequency and ambient weather conditions on biological, physical and chemical properties of composted slurry-woodchip mixtures from HRFF. Compost trials were conducted in either fall (FT) or spring (ST) and piles were turned once or three times per week or upon compost temperature reaching 65°C. Physical, chemical and microbiological characteristics were measured over the course of 112 (FT) or 143 (ST) days of composting. Total carbon, total nitrogen (N) and inorganic N decreased in all piles. Ammonium decreased while nitrate increased in all piles (including unturned), but total N losses were greatest in piles turned more frequently during the ST. Microbial populations of nitrifiers were dominated by ammonia-oxidizing archaea (3.0 Â 10 3 -4.2 Â 10 6 cells g À1 compost) but ammonia oxidizing bacteria (below detection to 6.0 Â 10 5 cells g À1 compost) varied in response to turning and compost temperature; denitrifiers were present in high concentrations throughout the process. Swine HRFF materials composted well in windrows regardless of turning frequency and despite significant differences in starting materials and low initial C/N. Volume reduction, low moisture and low readily degradable organic matter suggest that the finished compost would have lower transportation costs and should provide value as a soil conditioner. Published by Elsevier Ltd.

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Section: Nitrogen Dynamicssupporting

confidence: 58%

Effect of turning frequency and season on composting materials from swine high-rise facilities

et al. 2015

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“…During sludge composting, nitrogen loss is mainly caused by microbial activity involved in decomposition of nitrogenous material, nitrification, and denitrification (Bernal et al 1996;Roig et al 2001). The high ammonia emissions from sewage sludge composting due to the decomposition of nitrogenous material (proteins and amino acids) frequently occur at the thermophilic stage, and the characteristic low initial C/N ratio of the sludge exacerbates this (De Guardia et al 2008;Liang et al 2006). The emissions of NH 3, which is one of the principal malodorous compounds produced in sludge composting, can also cause nitrogen loss and acidification (Shen et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Influence of natural zeolite and nitrification inhibitor on organics degradation and nitrogen transformation during sludge composting

Zhang

Sui

et al. 2015

Environ Sci Pollut Res

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Sludge composting is one of the most widely used treatments for sewage sludge resource utilization. Natural zeolite and nitrification inhibitor (NI) are widely used during composting and land application for nitrogen conservation, respectively. Three composting reactors (A-the control, B-natural zeolite addition, and C-3,4-dimethylpyrazole phosphate (DMPP) addition) were established to investigate the influence of NI and natural zeolite addition on organics degradation and nitrogen transformation during sludge composting conducted at the lab scale. The results showed that, in comparison with the control, natural zeolite addition accelerated organics degradation and the maturity of sludge compost was higher, while the DMPP addition slowed down the degradation of organic matters. Meanwhile, the nitrogen transformation functional genes including those responses for nitrification (amoA and nxrA) and denitrification (narG, nirS, nirK, and nosZ) were quantified through quantitative PCR (qPCR) to investigate the effects of natural zeolites and DMPP addition on nitrogen transformation. Although no significant difference in the abundance of nitrogen transformation functional genes was observed between treatments, addition of both natural zeolite and DMPP increases the final total nitrogen content by 48.6 % and 23.1 %, respectively. The ability of natural zeolite for nitrogen conservation was due to the absorption of NH 3 by compost, and nitrogen conservation by DMPP was achieved by the source reduction of denitrification. Besides, it was assumed that the addition of natural zeolite and DMPP may affect the activity of these genes instead of the abundance.

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“…Petric and Selimbašić [18] studied the effects of airflow rates on the substrate temperature and organic matter conversion. Guardia et al [19,20] studied influence of different aeration rates (0.03-0.28 L/min kg DM) on composting kinetics and nitrogen dynamics. Gao et al [21] investigated composting of chicken manure and sawdust at aeration rates of 0.3, 0.5, and 0.7 L/min kg organic matter.…”

Section: Introductionmentioning

confidence: 99%

Determination of the Effect of Aeration Rate on Composting of Vegetable–Fruit Wastes

Arslan

Ünlü

Topal

2011

CLEAN Soil Air Water

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In this study, it was aimed to determine the effect of various aeration rates on composting to supply the optimum aeration rate for a successful and economic composting. For this aim, vegetable-fruit wastes (VFW) were composted at various aeration rates (0.37, 0.49, 0.62, 0.74, 0.86, and 0.99 L/min kg VS) and moisture, temperature, pH, electrical conductivity, C/N, and cellulose were investigated. Moistures of the reactor that had the highest aeration were generally lower than those of the others. Reactor that had the lowest aeration reached thermophilic phase earlier than the others and stayed more days. This situation was opposite for the reactor that had the highest aeration. pH variations with aeration rates were not significant. Although electrical conductivity did not differ significantly with aeration rates, at the beginning of the thermophilic phase it generally increased with the increase in aeration. The highest C/N reduction was observed in the reactor that had an aeration of 0.62 L/min kg VS. The final cellulose contents were close to each other. It could be said that aeration rates used were efficient on composting of VFW. Taking the C/N into account which is the parameter of the indicator of the stabilization in composting, it could be said that the optimum aeration rate for forced aerobic composting of VFW was 0.62 L/min kg VS.

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Influence of aeration rate on nitrogen dynamics during composting

Cited by 105 publications

References 35 publications

Effect of turning frequency and season on composting materials from swine high-rise facilities

Effect of turning frequency and season on composting materials from swine high-rise facilities

Influence of natural zeolite and nitrification inhibitor on organics degradation and nitrogen transformation during sludge composting

Determination of the Effect of Aeration Rate on Composting of Vegetable–Fruit Wastes

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