Characterizing the transformation and transfer of nitrogen during the aerobic treatment of organic wastes and digestates

Zeng, Yang; Guardia, A. de; Daumoin, Mylène; Benoist, Jean-Claude

doi:10.1016/j.wasman.2012.07.006

Cited by 44 publications

(29 citation statements)

References 39 publications

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“…The C/N ratio for fresh manure was 17:1 that concurs with the values reported earlier [13,14]. A critical C:N ratio of about 15:1 is essential for efficient aerobic transformations of carbon and nitrogen, a higher C:N ratio is associated with (1) a decrease in ammonia emission, possibly due to an increase in nitrogen immobilization [14,15] and (2) an increase in odorous volatile organic acids during anaerobic digestion [16,17].…”

Section: Manure Characteristicssupporting

confidence: 83%

Aerobic and Anaerobic Transformations in Estrogens and Nutrients in Swine Manure: Environmental Consequences

Singh

2015

Agriculture

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Pig manure is an excellent fertilizer and rich source of organic carbon and nitrogen compounds such organic nitrogen (O-N) (95% of total nitrogen) that is plant-unavailable-nitrogen (PUN) and mineralized nitrogen (about 1% of total nitrogen) such as ammonium (NH4 + ) and nitrate (NO3) that are plant-available-nitrogen (PAN). In addition, manure also contains two forms of estrogens: (i) poorly estrogenic thus essentially nontoxic conjugated estrogens (cEs) such as estrone (cE1), estradiol (cE2) and estriol (cE3); and (ii) highly estrogenic and toxic free estrogens (fEs) such as fE2, fE1 and fE3. This study showed that aerobic processing reduced concentrations of total carbon (TC), O-N, PAN and NH4 + /NH3 ratio, transiently hydrolyzed cEs (cE2 > cE1 > cE3) into corresponding fEs, transiently increased estrogenic activity and potential toxicity, and rapidly degraded fEs (fE2, fE1 > fE3), thus reducing the estrogenic activity in manure. Unlike aerobic processing, anaerobic processing stabilized and increased PAN and NH4 + /NH3 ratio, thus increasing the manure's fertilizer value. However, anaerobic processing, relative to aerobic processing, poorly hydrolyzed cEs (reducing transient toxicity and increasing reserve toxicity potential) and poorly degraded fEs (increasing toxicity) in manure. Thus, aerobic and anaerobic environments have distinct effects on manures' PAN and estrogenic activity, presenting an interesting dilemma: anaerobic incubation that increases manures' PAN does not effectively degrade estrogens, while aerobic incubation that effectively degrades estrogens (after transiently increasing their estrogenic activity) also decreases PAN, thus making manure less profitable. New techniques are need to fully use manure as organic fertilizer. OPEN ACCESSAgriculture 2015, 5 698

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Section: Manure Characteristicssupporting

confidence: 83%

Aerobic and Anaerobic Transformations in Estrogens and Nutrients in Swine Manure: Environmental Consequences

Singh

2015

Agriculture

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“…Nitrogen losses ranging from 37% to 57% were reported for bio-waste collected in mixed waste and source-separated bio-waste (de Guardia et al, 2010). These losses are mainly attributed to ammonia volatilization (13-38% of input N in the case of bio-waste collected in the mixed waste as reported by Beck-Friis et al (2001), Jarvis et al (2009) andZeng et al (2012)), but can include N 2 O and N 2 . De Guardia et al (2010) observed that bio-waste collected as mixed waste is characterized by a high ability to nitrify and consequently most of the N losses were assigned to N 2 emitted after denitrification.…”

Section: Compostingmentioning

confidence: 91%

“…De Guardia et al (2010) observed that bio-waste collected as mixed waste is characterized by a high ability to nitrify and consequently most of the N losses were assigned to N 2 emitted after denitrification. In well managed windrows, losses through leaching are minimal, in the range of 0-2% of input N (Zeng et al, 2012) although losses ranging from 20% to 40% of initial N have been reported for substrates with very low C/N (Eghball, 1997).…”

Section: Compostingmentioning

confidence: 99%

Recovery of essential nutrients from municipal solid waste – Impact of waste management infrastructure and governance aspects

Zabaleta

Rodić

2015

Waste Management

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“…Moisture content was determined by drying fresh samples at 80°C until mass loss was \0.5 % in 24 h relative to the previous day [14]. The pH value was determined with a pH meter (PHS-25) by mechanically shaking the fresh sample in water at a ratio of 1:10 (w/v) for 30 min.…”

Section: Physical-chemical Parameters Analysismentioning

confidence: 99%

Comparative Study on the Performances and Bacterial Diversity from Anaerobic Digestion and Aerobic Composting in Treating Solid Organic Wastes

Liang

2016

Waste Biomass Valor

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The differences of the physical and chemical parameters in the samples from the processes of anaerobic digestion (AD), aerobic composting (AC) and the residue after anaerobic digestion for aerobic composting (RAC) were comparatively investigated in this study. At the same time the quantities and structural characteristics of bacteria were studied by PCR-DGGE. The results showed that in the three ways for treating solid organic wastes, AC process had the most intensive decomposition of organic matter, with degradation rate of 51.51 %. The significant differences in temperature, pH and ammonia nitrogen (NH 4 ? -N) content were observed in these treatments. The microbial species of Bacillus mainly existed in the process of AD while the Proteobacteria and Firmicutes primarily occurred in AC and RAC. AC has the most abundant biodiversity while the biological diversity of RAC is relatively single.

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Characterizing the transformation and transfer of nitrogen during the aerobic treatment of organic wastes and digestates

Cited by 44 publications

References 39 publications

Aerobic and Anaerobic Transformations in Estrogens and Nutrients in Swine Manure: Environmental Consequences

Aerobic and Anaerobic Transformations in Estrogens and Nutrients in Swine Manure: Environmental Consequences

Recovery of essential nutrients from municipal solid waste – Impact of waste management infrastructure and governance aspects

Comparative Study on the Performances and Bacterial Diversity from Anaerobic Digestion and Aerobic Composting in Treating Solid Organic Wastes

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