IMMOBILISATION OF LEAD(II) IONS FROM AQUEOUS SOLUTIONS ON NATURAL COAL: COMPARISON OF CALCULATED AND MEASURED ADSORPTION ENTHALPIES

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F13%3AA14017R0" target="_blank" >RIV/61988987:17310/13:A14017R0 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

IMMOBILISATION OF LEAD(II) IONS FROM AQUEOUS SOLUTIONS ON NATURAL COAL: COMPARISON OF CALCULATED AND MEASURED ADSORPTION ENTHALPIES

Original language description

Immobilization of lead(II) ions from aqueous solutions on natural coal was investigated to compare calculated and measured adsorption enthalpies. For the purpose, adsorption isotherms were measured at temperatures 30, 60 and 80°C. Adsorption enthalpy ?Hwas evaluated from temperature dependence of the equilibrium constant of adsorption using the van´t Hoff equation. Thus, the value of ?H = 27 kJ mol-1 was obtained manifesting endothermic effect of lead(II) immobilisation on the coal. However, based on the flow and immersion calorimetric measurements, the exothermic character of lead(II) adsorption on the studied coal was proven with a value of about -7 kJ mol-1. The reason for the evident discrepancy is not clear.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

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Continuities

O - Projekt operacniho programu

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

J THERM ANAL CALORIM

ISSN

1388-6150

e-ISSN

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Volume of the periodical

112

Issue of the periodical within the volume

3

Country of publishing house

HU - HUNGARY

Number of pages

5

Pages from-to

1559-1563

UT code for WoS article

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EID of the result in the Scopus database

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