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International Journal of Environment Science and Technology
Center for Environment and Energy Research and Studies (CEERS)
ISSN: 1735-1472 EISSN: 1735-1472
Vol. 11, No. 1, 2014, pp. 53-58
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Bioline Code: st14006
Full paper language: English
Document type: Research Article
Document available free of charge
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International Journal of Environment Science and Technology, Vol. 11, No. 1, 2014, pp. 53-58
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Initial air pressure influence on in-vessel composting for the biodegradable fraction of municipal solid waste in Morocco
Makan, A.; Assobhei, O. & Mountadar, M.
Abstract
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.
Keywords
Air pressure; Biodegradation; Bioreactor; In-vessel; Municipal solid waste; Maturity
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