author = "Díaz Barrientos, Encarnación"

Encontrado 96 documentos, página mostrada 1 de 10

Influence of traffic distribution on some metal contents in urban soils: "urban" and "natural" elements

Description: In contrast with soils in agricultural areas, soils in urban areas (particularly in parks and gardens) have a direct infl uence on public health not related with production of food. This is due to the fact that it can come easily in contact with humans and be transferred to them, either as suspended...
Language(s): Inglés

Liberación de metales en columnas de suelos por soluciones de alpechín

Description: 6 páginas, 9 figuras y 10 referencias.-- Trabajo presentado en el VI Simposium Nacional - II Ibérico sobre nutrición mineral de las plantas, Sevilla, del 12 al 15 de Noviembre de 1996.-- Entidades colaboradoras Junta de Andalucía, Universidad de Sevilla, Consejo Superior de Investigaciones Científic...
Language(s): Español

Modelling titration curves of mixed materials with variable and permanent surface charge: theory

Description: 3 pages, 5 references. Congreso celebrado del 7-10, septiembre, 1987, Sevilla, España. EUROCLAY'87. , The adsorption of potential-determining ions by variable charge surfaces has been extensively studied, and various mathematical models have been applied to the data. However, only two of these models h...
Language(s): Inglés

Modelling titration curves of mixed materials with variable and permanent surface charge: application

Description: 3 pages, 1 figure, 2 references. Congreso celebrado del 7-10, septiembre, 1987, Sevilla, España. EUROCLAY'87. , Two well-known materials, lepidocrocite (specilic sur-face area 115 m2g-1) and montmorillonite (internal surface are a 700 m2g-1), can be useful to test the mathematical model described in th...
Language(s): Inglés

Nature of the action of a compost from olive mill wastewater on Cu sorption by soils

Description: The reaction of two soils that have received composted OMW as manure with Cu solutions is studied. The data were fitted into a multi-reaction model which considers both reversible and irreversible adsorption sites, and an 'instantaneous' fraction. The presence of composted OMW caused a strong increa...
Language(s): Inglés

Release of metals from homogeneous soil columns by wastewater from an agricultural industry

Description: The effect of discharging olive mill wastewater (OMW) in soils on the release of metals previously retained by them is simulated by leaching homogeneous soil columns with a solution of the residue after passing solutions of Cu or Zn through the columns. The effect of other residues, previously added...
Language(s): Inglés

Retention of heavy metals by soils in the presence of a residue from the olive-oil industry

Description: The effect of the presence of alpechín, wastewater from the olive-oil industry, on the reaction of three soils with Cd, Cu and Zn is studied. Adsorption of Cu and Zn by all the soils studied, and Cd by one of the soils, is markedly decreased by the presence of high doses of alpechín, while Cd adsorp...
Language(s): Inglés

Release of metals from homogeneous soil columns by wastewater from an agricultural industry

Description: The effect of discharging olive mill wastewater (OMW) in soils on the release of metals previously retained by them is simulated by leaching homogeneous soil columns with a solution of the residue after passing solutions of Cu or Zn through the columns. The effect of other residues, previously added...
Language(s): Inglés

Retention of heavy metals by soils in the presence of a residue from the olive-oil industry

Description: The effect of the presence of alpechín, wastewater from the olive-oil industry, on the reaction of three soils with Cd, Cu and Zn is studied. Adsorption of Cu and Zn by all the soils studied, and Cd by one of the soils, is markedly decreased by the presence of high doses of alpechín, while Cd adsorp...
Language(s): Inglés

Modelling titration curves of mixed materials with variable and permanent surface charge: theory

Description: 3 pages, 5 references. Congreso celebrado del 7-10, septiembre, 1987, Sevilla, España. EUROCLAY'87. , The adsorption of potential-determining ions by variable charge surfaces has been extensively studied, and various mathematical models have been applied to the data. However, only two of these models h...
Language(s): Inglés

Encontrado 96 documentos, página mostrada 1 de 10

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