Monolayer Coverage–Sorbate Area Relationship for Mixtures of Sorbents

Helmy, A. K.; Bussetti, S. G. de; Ferreiro, E. A.

doi:10.1006/jcis.1999.6456

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…As we reported before (Helmy et al ., 1999b), the magnitude of z in a mixture of sorbents depends on the z values of the individual components and the proportions of the components in the mixture. Sorbents can have z values equal to, less than, or greater than unity.…”

Section: Resultssupporting

confidence: 84%

Determination of surface area of soil by adsorption methods

Ferreiro

Bussetti

Helmy

2002

European J Soil Science

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Summary How significant are estimates of surface areas of soils obtained by adsorption methods? To answer this we tested the applicability of an equation that relates monolayer coverage (N) of an adsorbent with the area (A) of adsorbate, NAz = k, for six soil samples using six adsorbates of different sizes. The data obtained confirm the validity of the equation with the z parameter ranging between 1.25 and 1.41. Hence each soil sample showed preferences towards small‐sized adsorbates for which the product NA (calculated surface area) is inversely related to the size of adsorbate. We also demonstrated that the equation has roots in the Langmuir adsorption equation.

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Section: Resultssupporting

confidence: 84%

Determination of surface area of soil by adsorption methods

Ferreiro

Bussetti

Helmy

2002

European J Soil Science

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“…( 9) is almost a straight line, so the behavior of the k L constant of the Langmuir isotherm will be similar to that of a real equilibrium constant [22,23] and the same as Eq. (12). Other authors [24,25] also postulate the constant of the Langmuir equation of adsorption as a useful parameter for determining the enthalpy of adsorption.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…Success in obtaining adsorption isotherms depends on the affinity that the adsor-bates have for certain heterogeneous solid surfaces [10]. It also depends on the molecule size of the adsorbate [3,[11][12][13], the pH of the system and whether the isotherm has a simple or binary system [3,[14][15][16].…”

Section: Introductionmentioning

confidence: 99%