Indicateurs de stabilisation de la matière organique au cours du compostage et indicateurs de stabilité des composts : analyse critique et perspectives d’usage

Trémier, Anne; Guardia, A. de; Mallard, Pascal

doi:10.1051/tsm/200710105

Cited by 4 publications

(6 citation statements)

References 42 publications

(32 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Indeed, a linear relationship between the lignin content and biodegradability was also found in aerobic conditions [75]. Table 7 presents characteristics of different fresh organic wastes intended to be composted [64,76,77]. These chemical characteristics vary widely according to the nature of the wastes illustrating that acceptable initial conditions for composting materials are quite large.…”

Section: Biodegradable Potentialmentioning

confidence: 99%

“…These tests are usually performed on mixtures of compost and soil or sometimes on compost alone and consist in studying the development of plants or mushrooms on the organic media. No threshold value exists to define stability of organic substrate by growth trials [64].…”

Section: Phyto-toxicitymentioning

confidence: 99%

“…Igoni et al [71] suggested a C/N equal to 30 to optimize anaerobic biodegradation as they mentioned that bacteria in digestion process use up carbon 30-35 times faster than the rate at which they convert nitrogen. C/N value of 30 has also been reported as the most favourable situation for a rapid composting [27,64]. Nevertheless, C/N ratios lower than this ''ideal'' value have been often reported for compostable raw wastes [63].…”

Section: Biodegradable Potentialmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of Solid Digestates: Part 1, Review of Existing Indicators to Assess Solid Digestates Agricultural Use

Teglia

Trémier

Martel

2010

Waste Biomass Valor

Self Cite

137

View full text Add to dashboard Cite

Anaerobic digestion of organic wastes is clearly encouraged by current regulations in Europe. In complement to the energy supply it represents, this biological treatment process also allows the recycling of organic matter and nutrients contained in biodegradable wastes. Indeed the digestion residue can be further promoted as soil improver or fertilizer. The sustainability of anaerobic digestion plants partly depends on the management of these digestion residues. Digestates present particular characteristics that can reduce their direct agricultural valorization and minimize by the way the benefit of such a biological treatment. Thus the first part of this two part paper aims at reviewing and discussing a wide range of biochemical, biological and physical indicators used to assess the agronomic quality of organic products and the feasibility of an aerobic treatment by composting. The definition of agronomic quality is very complex and no single parameter can be picked out to assess the quality of solid digestates coming from different sources. A relevant choice of these parameters will lead to state on digestates agricultural use, whether they can be directly used on soil after digestion or if they need a composting post-treatment before utilization. The second part of this two part paper will choose indicators to characterize several digestates in order to assess their future agricultural use.

show abstract

Section: Biodegradable Potentialmentioning

confidence: 99%

Section: Phyto-toxicitymentioning

confidence: 99%

Section: Biodegradable Potentialmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of Solid Digestates: Part 1, Review of Existing Indicators to Assess Solid Digestates Agricultural Use

Teglia

Trémier

Martel

2010

Waste Biomass Valor

Self Cite

137

View full text Add to dashboard Cite

show abstract

“…A C/N equal to 30 has been suggested adequate to optimize anaerobic biodegradation as bacteria in digestion process use up carbon 30-35 times faster than the rate of nitrogen conversion [55]. An optimal C/N value of 30 has also been reported as the most favourable situation for a rapid composting [26,56]. All the digestates presented C/N lower than the biological optimum for bacteria (see Table 2).…”

Section: Residual Biodegradabilitymentioning

confidence: 99%

Characterization of Solid Digestates: Part 2, Assessment of the Quality and Suitability for Composting of Six Digested Products

Teglia

Trémier

Martel

2011

Waste Biomass Valor

Self Cite

102

View full text Add to dashboard Cite

The aim of this research was to characterize six organic solid digestates in order to discuss their potential direct agricultural utilisation or their further valorization through an aerobic post-treatment. The studied digestates came from four different sources: waste water treatment sludge, food-processing wastes, agricultural solid wastes and source-selected organic fraction of municipal solid wastes. Physico-chemical, biochemical and biological characteristics showed that a direct use of digestates and application on land as soil amendment or fertilizer is not recommended according to current standards. A posttreatment appeared thus to be necessary in order to obtain commercial amendments or fertilizers. A composting posttreatment of these digestates would assure their full biological stabilization as these organic residues still contain residual biodegradability and present sometimes phytotoxic risks. The prediction of operational parameters showed that the composting post-treatment of these digestates will probably lead to a limited rise in temperature, require moderate aeration supply and last less than a typical composting treatment of organic wastes.

show abstract

“…Experimentally, the content of NTK nitrogen in dry matter generally tends to increase during fermentation and shows a relative stability in maturation. This increase is probably due in large part to the loss of dry mass [14]. We can infer a continuous breakdown of the three types of compost.…”

Section: Evolution Of Total Organic Carbon (Toc) and Nutrients Of Commentioning

confidence: 82%

Evaluation of the Maturity of the Compost Produced at the Compost Production Site of the NGO ENPRO in Lomé (Togo) Using the UV-Visible Spectroscopy

Tamakloe¹,

Koledzi²,

Megnassan³

et al. 2020

SJC

View full text Add to dashboard Cite

Composting is a method of recovery of household solid waste. But to be useful to agriculture the compost resulting from this process must be mature. The objective of this study is to evaluate the maturity of three types of composts produced on the garbage composting unit of the NGO ENPRO in Lomé. Three types of compost (garbage, fruit waste, animal litter) were made in windrows for at least 3 months. The maturity of the composts was determined according to the basic chemical analysis, by UV-Visible spectroscopy. UV-visible spectroscopy performed on the three types of compost at the end of the 3rd and 4th months of composting shows a decrease in the E4/E6 ratio (465 nm/665 nm), Q2/Q6 (280 nm/664 nm) and Q4/Q6 (472 nm/664 nm) for two types of composts characteristic of increasing humification of organic matter. The data from the various elementary analyzes and particularly from UV-Visible spectroscopy show that composts N°1 and N°2 can be considered ripe after 3 months of composting. But the values of the various elementary analyzes clearly show that compost N° 3 is not yet ripe. UV-Visible spectroscopy is a relatively effective method for evaluating the maturity of compost.

show abstract

Indicateurs de stabilisation de la matière organique au cours du compostage et indicateurs de stabilité des composts : analyse critique et perspectives d’usage

Cited by 4 publications

References 42 publications

Characterization of Solid Digestates: Part 1, Review of Existing Indicators to Assess Solid Digestates Agricultural Use

Characterization of Solid Digestates: Part 1, Review of Existing Indicators to Assess Solid Digestates Agricultural Use

Characterization of Solid Digestates: Part 2, Assessment of the Quality and Suitability for Composting of Six Digested Products

Evaluation of the Maturity of the Compost Produced at the Compost Production Site of the NGO ENPRO in Lomé (Togo) Using the UV-Visible Spectroscopy

Contact Info

Product

Resources

About