Extraction of trace amounts of organic compounds from water with porous organic polymers

Dressler, M.

doi:10.1016/s0021-9673(00)90939-7

Cited by 167 publications

(26 citation statements)

References 83 publications

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“…The analytes can then be removed from the resin with an appropriate non-polar solvent. Solidphase sorbents have been used extensively to accumulate a wide variety of trace-organic compounds in water (Liska and others, 1989;Dressier, 1979). Amberlite® XAD resins, and in particular XAD-2, are efficient sorbents for concentrating trace-organic compounds at the parts per billion and parts per trillion level (Daignault and others, 1988;Van Rossum and Webb, 1978).…”

Section: Methodsmentioning

confidence: 99%

Sediment-quality assessment of Franklin D. Roosevelt Lake and the upstream reach of the Columbia River, Washington, 1992

2001

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Section: Methodsmentioning

confidence: 99%

Sediment-quality assessment of Franklin D. Roosevelt Lake and the upstream reach of the Columbia River, Washington, 1992

2001

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“…9 Breakthrough curves of T B P at different feed flow rate and concentration lated using numerical integration. MTZ lengths were calculated at 80% breakthrough (rather than 90% breakthrough) because higher values for some experimental runs were not available.…”

Section: Breakthrough Curvesmentioning

confidence: 99%

Adsorption Kinetics and Breakthrough Behaviour of Tri-n-butyl Phosphate on Amberlite XAD-4 Resin.

Pandey

Velavendan

Geetha

et al. 1998

J. Nucl. Sci. Technol.

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Adsorption behaviour of tri-n-butyl phosphate (TBP) from aqueous solution (dilute HN03) on Amberlite XAD-4 has been investigated experimentally. Factors affecting the adsorption rates and breakthrough curves have been studied in batchwise and semicontinuous fixed bed adsorber. The adsorption isotherm of TBP on Amberlite XAD-4 resin have also been determined and the Freundlich model of adsorption is used to describe adsorption equilibrium. For the case of nonlinear equilibrium a simplified method proposed by Chi Tein is used to estimate intraparticle diffusion coefficient. The intraparticle diffusion coefficient is found to be in the range of 10-8cmZ~s-'. Results of fixed bed column are used to estimate mass transfer zone (MTZ) length, length of unused bed (LUB), breakthrough capacity corresponding to fixed value of effluent concentration (5 mg/l of TBP) and degree of saturation of bed at breakthrough. The MTZ length was found to vary from 21.8 cm to 37.3cm when flow rate changed from 13.5 mllmin to 52 mllmin, whereas column utilization ranged from 65.1% for the lowest flow rate to 43.5% for the highest flow rate.

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“…Son muy numerosos los materiales que se han empleado con este fin (Clark, 1975) (Dressier, 1979) (Crisp, 1980): a) Carbón activo y materiales grafitizados: Han sido los más utilizados en los primeros trabajos de este tipo. Presentan una gran superficie específica y alta capacidad de adsorción, siendo muy adecuados para desorción con disolventes, pero no para desorción térmica porque los compuestos son retenidos muy fuertemente en su superficie y se necesitarían temperaturas muy elevadas para obtener una desorción cuantitativa (Drozd, 1979).…”

Section: Espacio De Cabeza Dinámicounclassified

Técnicas de aislamiento y concentración de volátiles de aceites vegetales

Morales¹,

Aparicio²,

Gutiérrez³

1992

Grasas y Aceites

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RESUMEN Técnicas de aislamiento y concentración de volátiles de aceites vegetalesUno de los métodos de evaluación del flavor de los alimentos consiste en la determinación de sus componentes volátiles. La primera etapa necesaria para realizar este tipo de análisis es el aislamiento y concentración de los mismos. Se ha realizado una revisión bibliográfica sobre las diferentes técnicas utilizadas para este fin en diferentes alimentos y especialmente en aceites vegetales. Los métodos utilizados son muy diversos, se ofrece una explicación de cada uno de ellos considerando las diferentes variantes existentes. Asimismo se detallan las aplicaciones realizadas en aceites vegetales durante los últimos años. PALABRAS-CLAVE: Aceite vegetal -Componentes volátiles (aislamiento) -Componentes volátiles (concentración) -Información (artículo). SUIVIMARY Techniques for the isolation and concentration of vegetable oils volátilesOne of the methods for food flavor evaluation is the analysis of volatile components. First step in this kind of analysis Is the isolation and concentration of volátiles. A review is carried out about different techniques applied in foods and especially in vegetable oils. Very different methods have been used, an explication of each one with its different cases are presented. Likewise the applications carried out in vegetable oils during last years are discussed.

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Extraction of trace amounts of organic compounds from water with porous organic polymers

Cited by 167 publications

References 83 publications

Sediment-quality assessment of Franklin D. Roosevelt Lake and the upstream reach of the Columbia River, Washington, 1992

Sediment-quality assessment of Franklin D. Roosevelt Lake and the upstream reach of the Columbia River, Washington, 1992

Adsorption Kinetics and Breakthrough Behaviour of Tri-n-butyl Phosphate on Amberlite XAD-4 Resin.

Técnicas de aislamiento y concentración de volátiles de aceites vegetales

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