خيارات البحث
النتائج 1 - 10 من 32
Soil protection and intensive animal husbandry in the Netherlands.
1994
Haan F.A.M. de | Zee S.E.A.T.M. van der
Static pile passive aeration composting of waste slurries
1993
Zhan, W. | Fernandes, L. (Department of Civil Engineering, University of ottawa (Canada))
Arsenic dynamics in paddy soil under traditional manuring practices in Bangladesh
2021
Hossain, Mahmud | Mestrot, Adrien | Norton, Gareth J. | Deacon, Claire | Islam, M Rafiqul | Meharg, Andrew A.
Fertilization with organic matter (farm yard manure and/or rice straw) is thought to enhance arsenic (As) mobilization into soil porewaters, with subsequent As assimilation by rice roots leading to enhanced translocation to the grain. Here, interlinked experiments (field manuring and soil batch culture) were conducted to find the effect of organic matter at a field application rate practiced in Bangladesh (5 t/ha) on As mobilization in soil for paddies impacted by As contaminated groundwater irrigation, a widespread phenomenon in Bangladesh where the experiments were conducted. Total As concentration in a paddy soil (Sonargaon) ranged from 21.9 to 8.1 mg/kg down the soil profile and strongly correlated with TOC content. Arsenic, Fe, Mn, and DOC release into soil solution, and As speciation, are intimately linked to OM amendment, soil depth and temporal variation. Organic matter amendments lead to increased mobilization of As into both soil porewaters and standing surface waters. The As speciation in the porewater was dominated by inorganic As (Asᵢ) (arsenite and arsenate), with traces amounts of methylated species (DMAⱽ and MMAⱽ) only being found with OM amendment. It was noted in field trials that OM fertilization greatly enhanced As mobility to surface waters, which may have major implications for the fate of As in paddy agronomic ecosystems.
اظهر المزيد [+] اقل [-]Effects of the recirculation on the anaerobic digestion of cow manure in a biofilm reactor
1992
Sanchez Hernandez, E.P. (National Center for Scientific Research, La Habana (Cuba). Environmental Pollution Dept.) | Weiland, P. | Travieso Cordoba, L.
Treatment of animal wastes and uses of treated residues
1992
Hobson, P.N. (Aberdeen Univ. (United Kingdom). Dept. of Molecular and Cell Biology)
[Measuring nitrate formation and nitrate transport in organically fertilized soil using the Time Domain Reflectometry (TDR)]
1995
Moeldrup, P. | Nissen, H.H. | Jensen, C.S. | Therkildsen, I.L. | Henriksen, K. (Aalborg Univ. (Denmark). Lab. for Miljoeteknik)
Chemical and spectroscopic analysis of organic matter transformations during composting of pig manure
1999
Hsu JennHung | Lo ShangLien (Graduate Institute of Environmental Engineering, National Taiwan University, 71 Chou-Shan Road, Taipei (Taiwan))
Composting of spent pig litter in turned and forced-aerated piles
1998
Tiquia, S.M. | Tam, N.F.Y. (Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong (China))
Effects of bacterial inoculum and moisture adjustment on composting of pig manure
1997
Tiquia, S.M. | Tam, N.F.Y. | Hodgkiss, I.J. (Department of Biology and Chemistry, City University of Hong Kong, Tat Chee Avenue, Kowloon (Hong Kong))
Anaerobic digestion of a mixture of cheese whey, poultry waste and cattle dung: a study of the use of adsorbents to improve digester performance
1994
Desai, M. | Madamwar, D. (Post-Graduate Department of Biosciences, Sardar Patel University, Vallabh Vidyanagar-388 120, Gujarat (India))
