Effects of initial C/N ratio on organic matter degradation of composting of rose oil processing solid wastes

2018 ◽  
Vol 16 (9) ◽  
pp. 5131-5140 ◽  
Author(s):  
K. Ekinci ◽  
İ. Tosun ◽  
B. Bıtrak ◽  
B. S. Kumbul ◽  
F. Şevik ◽  
...  
2012 ◽  
Vol 9 (5) ◽  
pp. 1915-1933 ◽  
Author(s):  
J. M. Mogollón ◽  
A. W. Dale ◽  
H. Fossing ◽  
P. Regnier

Abstract. Arkona Basin (southwestern Baltic Sea) is a seasonally-hypoxic basin characterized by the presence of free methane gas in its youngest organic-rich muddy stratum. Through the use of reactive transport models, this study tracks the development of the methane geochemistry in Arkona Basin as this muddy sediment became deposited during the last 8 kyr. Four cores are modeled each pertaining to a unique geochemical scenario according to their respective contemporary geochemical profiles. Ultimately the thickness of the muddy sediment and the flux of particulate organic carbon are crucial in determining the advent of both methanogenesis and free methane gas, the timescales over which methanogenesis takes over as a dominant reaction pathway for organic matter degradation, and the timescales required for free methane gas to form.


2018 ◽  
Vol 247 ◽  
pp. 138-146 ◽  
Author(s):  
Mukesh Kumar Awasthi ◽  
Quan Wang ◽  
Hongyu Chen ◽  
Sanjeev Kumar Awasthi ◽  
Meijing Wang ◽  
...  

1970 ◽  
Vol 9 ◽  
pp. 99-104 ◽  
Author(s):  
Shankar Raj Pant ◽  
Kayo Devi Yami

Rapid growth of population in Kathmandu valley has increased solid wastes generation tremendously. One of the best ways of managing the organic wastes is to recycle domestic wastes at the site of its origin by vermicomposting into valuable organic fertilizers. A laboratory experiment was carried out at for proper management of solid wastes of Kathmandu valley, generated from Ayurveda industry, sugar mill (bagasse), wood mill, kitchen, and vegetable and fruit markets. The experiment dealt with the decomposition of solid wastes through the action of red worm (Eisenia foetida). The vermicomposting of mixtures were carried out for 12 weeks. Observations showed that vermicompost obtained from Ayurveda industry wastes was found to be rich in N, P, K and organic matter, and vermicompost from sugarcane bagasse was found best for rapid multiplication of Eisenia foetida. Fish scales and sawdust were identified as worst substrate for this worm. Key words: vermi compost; organic solid wastes; Eisenia foetida DOI: 10.3126/njst.v9i0.3172 Nepal Journal of Science and Technology 9 (2008) 99-104


Author(s):  
Nabil Kechaou ◽  
E Ammar

The Municipal Solid Waste of Agareb (Sfax –Tunisia), characterized by high organic fraction and moisture contents is the most worrying pollution source that must be managed by innovative treatment and recycling technologies. Bio-drying, as a waste to energy conversion technology, aims at reducing moisture content of this organic matter. This concept,  similar to composting, is accomplished by using the heat generated from the microbial degradation of the waste matrix, while forced aeration is used. The purpose of this work was to reduce the moisture content of the waste, by maximizing drying and minimizing organic matter biodegradation, in order to produce a solid recovered fuel with high calorific value.Keywords: Municipal solid wastes; organic matter; biodrying; composting; energy recovery.


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