Relation between the adsorption from solutions and the adsorption of pure gaseous components on the same adsorbent. Verification of the derived relations in nonpolar systems containing cyclohexane

An analysis has been performed of the continuous precipitation reactor - rotary vacuum filter system (operating at the selected negative pressure drop) on the basis of the unit output. Filtration area necessary for separation of the product from the precipitation reactor is a function of the mean residence time of suspension in the reactor, concentration of the precipitating solutions, porosity of the filtration cake and the filtration negative pressure drop. Application of the derived relations is demonstrated on the continuous precipitation of Mg(OH)2.

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Supersaturation of solutions in crystallisers with the well stirred suspension

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19801920 ◽

1980 ◽

Vol 45 (7) ◽

pp. 1920-1927 ◽

Cited By ~ 4

Author(s):

Jaroslav Nývlt

Keyword(s):

High Accuracy ◽

Nucleation And Growth ◽

Kinetic Constants ◽

Derived Relations ◽

Metastable Region ◽

The Given

Relations were derived comparing the steady supersaturation in the continuous MSMPR and/or bath crystallisers with the stirred suspension having the maximum supersaturation corresponding to the boundary of metastable region at the given conditions. The derived relations include only the quantities used for the system constant BN from the corresponding crystallisation experiments. By use of supersaturation in the crystalliser obtained by the described method it is possible to evaluate the kinetic constants of nucleation and growth. However, it is not possible to expect a high accuracy of the data so obtained.

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Energy of the polymer-surface interaction and its effect on the level of adsorption from solutions of polymers and their blends

Polymer Science U S S R ◽

10.1016/0032-3950(90)90250-a ◽

1990 ◽

Vol 32 (11) ◽

pp. 2171-2175

Author(s):

O.T. Gritsenko ◽

A.Ye. Nesterov ◽

T.S. Khramova

Keyword(s):

Polymer Surface ◽

Surface Interaction ◽

Adsorption From Solutions

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RELATING DERIVED RELATIONS AS A MODEL OF ANALOGICAL REASONING: REACTION TIMES AND EVENT-RELATED POTENTIALS

Journal of the Experimental Analysis of Behavior ◽

10.1901/jeab.2005.79-04 ◽

2005 ◽

Vol 84 (3) ◽

pp. 435-451 ◽

Cited By ~ 26

Author(s):

Dermot Barnes-Holmes ◽

Donal Regan ◽

Yvonne Barnes-Holmes ◽

Sean Commins ◽

Derek Walsh ◽

...

Keyword(s):

Analogical Reasoning ◽

Reaction Times ◽

Event Related Potentials ◽

Derived Relations ◽

Related Potentials

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Adsorption of selected pharmaceuticals on activated carbons from water

E3S Web of Conferences ◽

10.1051/e3sconf/20184400089 ◽

2018 ◽

Vol 44 ◽

pp. 00089 ◽

Cited By ~ 2

Author(s):

Joanna Lach ◽

Anna Szymonik ◽

Agnieszka Ociepa-Kubicka

Keyword(s):

Salicylic Acid ◽

Activated Carbon ◽

Surface Water ◽

Correlation Coefficient ◽

Activated Carbons ◽

Kinetics Equation ◽

Adsorption Efficiency ◽

Adsorption From Solutions ◽

Freundlich Equation ◽

Treated Sewage

The possibility of using activated carbon for the removal of salicylic acid andiibuprofen sodium has been explored. These compounds are observed in crude and treated sewage and in surface water. The effect of pH on the adsorption efficiency was assessed. Tests were carried out from solutions with pH ranging from 2 to 10 (salicylic acid) and from 6 to 10 (iibuprofen sodium). It was found that the higher pH, the lower the adsorption of the compounds tested. Salicylic acid was most efficiently adsorbed from a solution with pH = 2, in which it occurred mainly in an undissociated form. The achieved efficiency of salicylic acid adsorption from solutions with pH=2 was 91%, while from those with pH=10, it was 55% (Co=4 mmol/L). The efficiency of removing ibuprofen sodium from the pH=6 solution was 64%, while from the pH = 10 solution, 60%.The adsorption of both salicylic acid and ibuprofen sodium follows the kinetics equation of the pseudo-2nd order. For the description of the adsorption isotherms, the Freundlich, Langmuir, Temkin and Dubibin-Radushkevich models were employed. The both compounds are described with the highest correlation coefficient in the case of the Freundlich equation.

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