Influence of initial moisture content on the composting of poultry manure with wheat straw

Petrić, Ivan; Šestan, Almir; Šestan, Indira

doi:10.1016/j.biosystemseng.2009.06.007

Cited by 61 publications

(23 citation statements)

References 31 publications

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“…3 Change of temperature during composting process for different experiments (Petrica et al 2009). The aeration method used in this study is non-continuous, and the system is closed what might be interesting in moisture waste control.…”

Section: Time In Daysmentioning

confidence: 99%

Initial air pressure influence on in-vessel composting for the biodegradable fraction of municipal solid waste in Morocco

Makan

Assobhei

Mountadar

2013

Int. J. Environ. Sci. Technol.

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This study aimed to determine the initial air pressure influence on the in-vessel composting for the biodegradable fraction of municipal solid waste in Morocco. For this purpose, representative composting mixture was prepared in which C/N ratio was 26 and moisture content was 70 %. The in-vessel bioreactor was designed and used specially to evaluate the initial air pressure effect on composting process in this study. Thus, daily changes of internal air pressure and temperature were monitored, and physicochemical properties of different composts obtained were also analyzed and compared. Experimental results showed a significant increase in internal pressure corresponding to the initial air pressure of 0.6 bar and a slight increase for the other initial air pressures. The initial air pressure which equal to 0.6 bar allowed maximum value of temperature and final composting product with good physicochemical properties as well as higher organic matter degradation and higher gas production. Composts obtained from experiments under 0.4 and 0.8 bar showed good maturity levels and may also be used for agricultural applications.

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Section: Time In Daysmentioning

confidence: 99%

Initial air pressure influence on in-vessel composting for the biodegradable fraction of municipal solid waste in Morocco

Makan

Assobhei

Mountadar

2013

Int. J. Environ. Sci. Technol.

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“…The moisture content tended to decrease due to the combination of high temperature levels and aeration during the thermophylic phase and was controlled by applying water (humidifying) the compost mass. The initial moisture content 63.5 % of the wet weight was reduced in all pile-layers to reach an average moisture content of 40±5% of the wet weight, remaining above the minimum moisture content of 40% suggested by [31] for optimal composting conditions.…”

Section: Moisture Content (Mc)mentioning

confidence: 80%

Aerobic Municipal Solid Waste Compost Quality According to Different Layers of Composting Bioreactor

AL-Saedi

Ibrahim

2019

JAARU

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Composting is one of the methods of solid waste management (SWM) where the organic component of solid waste stream is biologically decomposed under controlled conditions. A bioreactor tank was designed to contain 59.2 kg of mixed organic municipal solid waste, the organic matter was degraded under aerobic condition for 30 days. The tank was 45 cm in diameter, 130 cm total height and a 0.2 cm wall thickness. Three circular openings with screwed cover having diameter of 12 cm were leveled at (20, 40 and 80) cm respectively to withdraw samples. Temperature, moisture and pH were measured for three layers as process guideline indicators. Maximum temperature ranged between (34.79 to 46.91) ºC. Initial pH value was 6.53, ended within a range of (7.4 to 7.44). Chemical analysis for the composts in the three levels proved that the final C/N ratio ranged between (13.8 to16.1), TOC ended within a range of (17.33% to 25.24 %), final nitrification index (N-NH4/N-NO3) ranged between (0.22 to0.31), final of P% ranged between (0.89% to 1.23%), final of K% ranged between (1.69% to 1.81%) and results of germination index (GI %) ranged between (76.54%, to 88.35%) for three layers respectively. At the close of the experiment results proved that aerobic in-vessel composting could reduce the large amounts of wastes by 40% as a total mass. A satisfactory degree of decomposition was apparent in all levels, and the material was characterized by a pleasant earthy odor, and the obtained compost can be classified as mature compost. In conclusion, the three different layers do not have much effect on the quality indices of the final product.

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“…This indicated that the change of temperature was closely related to the change of carbon dioxide mass, suggesting that carbon dioxide mass might be used as another indicator for measuring the composting process besides temperature (Petric et al . ). This did not occur with ammonia.…”

Section: Resultsmentioning

confidence: 97%

In‐vessel composting under air pressure of organic fraction of municipal solid waste in Azemmour, Morocco

Makan

Assobhei

Mountadar

2013

Water & Environment J

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This study aims to evaluate the performance of laboratory-scale in-vessel composting bioreactor for the Organic Fraction of Municipal Solid Waste treatment in Azemmour, Morocco. The bioreactor was specially designed and used for this study, and it was operated semicontinuously under 0.6 bar pressure. The evaluations studied included the operational indices, the compost maturity indices and the quality of the final compost. Obtained results showed that organic fraction of municipal solid waste could be composted successfully in 12 days. Moreover, high CO2 generations involve high temperature and high internal air pressure change, revealing vigorous microbial activity. The final compost was satisfactory for its agricultural application.

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Influence of initial moisture content on the composting of poultry manure with wheat straw

Cited by 61 publications

References 31 publications

Initial air pressure influence on in-vessel composting for the biodegradable fraction of municipal solid waste in Morocco

Initial air pressure influence on in-vessel composting for the biodegradable fraction of municipal solid waste in Morocco

Aerobic Municipal Solid Waste Compost Quality According to Different Layers of Composting Bioreactor

In‐vessel composting under air pressure of organic fraction of municipal solid waste in Azemmour, Morocco

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