Leaching Of Phosphorus
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Evaluation of the Acid Baking Technique to Decrease the Phosphorus Content of the Iron Ore
Unlike the available mineral resources, the steelmaking processes have demanded raw material with lower phosphorus content to decrease the costs, energy use, and the residue generated within the steel plant. One alternative is to develop pretreatment of the iron ore concentrates producing raw materials with lower phosphorus. Depending on the mineral structur
Mat. Res.. Publicado em: 23/09/2019
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2. Stability and phosphorus leaching of tilapia feed in water
RESUMO: O presente trabalho tem como objetivo investigar a estabilidade de pellets e a lixiviação do fósforo na água proveniente de diferentes dietas formuladas para juvenis de tilápia do Nilo (Oreochromis niloticus), considerando distintas fontes de fósforo e diferentes tempos de exposição na água. Para tanto, foram elaboradas seis dietas com vari
Cienc. Rural. Publicado em: 23/05/2019
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3. Reducing the leachability of nitrate, phosphorus and heavy metals from soil using waste material
Abstract Contaminants like nitrate (NO3), phosphorus (P) and heavy metals in water are often associated with agricultural activities. Various soil and water remediation techniques have been employed to reduce the risk associated with these contaminants. A study was conducted to examine the extent of leaching of heavy metals (Cd, Ni, Pb and Cr), NO3 and P. Fo
Braz. J. Chem. Eng.. Publicado em: 2017-07
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4. Association of swine wastewater and mineral fertilization on black oat production
ABSTRACT Swine wastewater (SW) has high organic load, becoming an important source of macro and micronutrients to plants, promoting the improvement of soil quality and development in various cultures. However, when done without agronomic and environmental criteria, it can cause soil problems, nutrient leaching, water resource damage and plant toxicity. The o
Eng. Agríc.. Publicado em: 2016-10
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5. Processes for phosphorus removal from iron ore - a review
This paper aims at reviewing literature on the occurrence of phosphorus in iron ores from the mines around the world. The review extends to the phosphorus removal processes of this mineral to meet the specifications of the steel industry. Phosphorus is a contaminant that can be hard to remove, especially when one does not know its mode of occurrence in the o
Rem: Rev. Esc. Minas. Publicado em: 2015-09
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6. Establishment of recommendations and parameters for use of urban waste compost in agriculture in the State of Sao Paulo - Brazil.
The organic matter present in urban waste (45 to 60% of total dry mass), after being stabilized in the form of compost, is recommended for application in agricultural soils, since it improves its physical and chemical properties and benefits the soil biological processes. Also, the urban waste compost has been economically viable for application in agricultu
INTERNATIONAL ORBIT CONFERENCE. Publicado em: 2011
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7. DinÃmica de nutrientes em solos arenosos adubados com esterco bovino por longos perÃodos / Dynamics of nutrients in sandy soils amended with cattle manure for long periods
Additions of farmyard manure (FYM) to the soil are a widely adopted alternative to supply nutrients, particularly nitrogen and phosphorus, in areas of subsistence agriculture in the semi-arid and agreste of Paraiba State. Additions of this residue in quantities that far exceed crop uptake, for long periods, can cause accumulation of nutrients in the soil. Th
Publicado em: 2008
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8. Use of stabilized sewage sludge in revegetation of a decapitated soil / Uso de lodo de esgoto estabilizado na revegetação de um solo decapitado
One of the consequences of urban population growth was the emergence of various environmental problems in the most of urban cities in Brazil, mainly the deterioration of water resources and land degradation caused by inadequate disposal of various types of waste generated by cities. In order to evaluate the use of sewage sludge composted with waste of grass
Publicado em: 2008
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9. DIFFUSE POLUTION BY SWINE WASTEWATER APPLICATION IN SOIL CULTIVATED WITH SOYBEAN UNDER SIMULATED RAIN CONDITION / PoluiÃÃo difusa decorrente da aplicaÃÃo de Ãgua residuÃria da suinocultura em solo cultivado com soja sob condiÃÃes de chuva simulada
West of Paranà presents as outstanding economical activity the swine activity. The effluent of swine generated in the agricultural properties are known by its high pollutant potential. Usually the effluents are treated and later applied to the soil as manuring form and reuse of water. However, these applications happen without a defined rate that considers
Publicado em: 2007
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10. Impact of use and management on the organic matter fractions of latosols from the Rio das Mortes Basin. / Impacto de uso e manejo em fraÃÃes da matÃria orgÃnica de latossolos da Bacia do Rio das Mortes - MG
Rio das Mortes basin is an important area of coffee and potato production in Minas Gerais state (Brazil). In these crops, it is frequent the application of lime and phosphorus, as well as the use of practices of intensive revolving of soil, especially in potato croplands. Although these management practices are important for agricultural process, they affect
Publicado em: 2007
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11. Environmental impacts from soil burning in Miranda District, Municipality of Parambu - Cearà / Impactos ambientais causados pelas queimadas nos solos do Distrito de Miranda no MunicÃpio de Parambu - CearÃ
We evaluated the environmental impacts caused by the fires in soils of the District of Miranda in the Municipal district of Parambu, Cearà State through the analysis of the environmental physical-chemical parameters of the soils, the texture analysis, and the use of plots having collectors to store the soil transported by the rains and the determination of
Publicado em: 2006
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12. Leaching of Escherichia coli O157:H7 in Diverse Soils under Various Agricultural Management Practices
Application of animal manures to soil as crop fertilizers is an important means for recycling the nitrogen and phosphorus which the manures contain. Animal manures also contain bacteria, including many types of pathogens. Manure pathogen levels depend on the source animal, the animal's state of health, and how the manure was stored or treated before use. Rai
American Society for Microbiology.