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Changes in some physical and chemical properties of fibrous solids from cow manure and digested cow manure during composting
Year:
1987
Source of publication :
Biological Wastes
Authors :
Raviv, Michael
;
.
Volume :
19
Co-Authors:
Raviv, M., Department of Environmental Horticulture, Agricultural Research Organization, Newe-Ya'ar Experimental Station, PO Haifa 31999, Israel
Tarre, S., Department of Environmental Engineering, Technion-Israel Institute of Technology, Haifa, Israel
Geler, Z., Kibbutz Industries Association, Tel-Aviv, Israel
Shelef, G., Department of Environmental Engineering, Technion-Israel Institute of Technology, Haifa, Israel
Facilitators :
From page:
309
To page:
318
(
Total pages:
10
)
Abstract:
Fibrous solids mechanically separated from fresh cow manure (CMFM), thermophilically digested cow manure (TFM) and two-stage digested cow manure (TSFM) were composted for 7 weeks. During the composting period the general particle size distribution shifted from larger to smaller particles. In turn, the bulk densities and water retention characteristics increased. The C/N ratio narrowed to 30/1, 23/1 and 16/1 for CMFM, TFM and TSFM, respectively. The apparent nutrient deficiencies in CMFM and TFM, reflected in low electrical conductivity values, were also evident from the negligible ammonia levels at thermophilic temperatures and subsequent minimal nitrate concentrations at the end of the composting period. The rate of nitrification determined the rate of decrease in pH. The cation exchange capacity (CEC) for all the fibrous solids rose 30 meq per 100 g TS. A tomato plant growth experiment revealed that only TSFM behaved as the peat moss control. © 1987.
Note:
Related Files :
agricultural wastes
animal wastes
Growth media
horticulture
REFUSE DISPOSAL - Composting
Show More
Related Content
More details
DOI :
10.1016/0269-7483(87)90065-6
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29407
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:46
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Scientific Publication
Changes in some physical and chemical properties of fibrous solids from cow manure and digested cow manure during composting
19
Raviv, M., Department of Environmental Horticulture, Agricultural Research Organization, Newe-Ya'ar Experimental Station, PO Haifa 31999, Israel
Tarre, S., Department of Environmental Engineering, Technion-Israel Institute of Technology, Haifa, Israel
Geler, Z., Kibbutz Industries Association, Tel-Aviv, Israel
Shelef, G., Department of Environmental Engineering, Technion-Israel Institute of Technology, Haifa, Israel
Changes in some physical and chemical properties of fibrous solids from cow manure and digested cow manure during composting
Fibrous solids mechanically separated from fresh cow manure (CMFM), thermophilically digested cow manure (TFM) and two-stage digested cow manure (TSFM) were composted for 7 weeks. During the composting period the general particle size distribution shifted from larger to smaller particles. In turn, the bulk densities and water retention characteristics increased. The C/N ratio narrowed to 30/1, 23/1 and 16/1 for CMFM, TFM and TSFM, respectively. The apparent nutrient deficiencies in CMFM and TFM, reflected in low electrical conductivity values, were also evident from the negligible ammonia levels at thermophilic temperatures and subsequent minimal nitrate concentrations at the end of the composting period. The rate of nitrification determined the rate of decrease in pH. The cation exchange capacity (CEC) for all the fibrous solids rose 30 meq per 100 g TS. A tomato plant growth experiment revealed that only TSFM behaved as the peat moss control. © 1987.
Scientific Publication
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