The influence of surfactants on the zeta potential of coals

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F09%3AA0900S0R" target="_blank" >RIV/61988987:17310/09:A0900S0R - 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

The influence of surfactants on the zeta potential of coals

Original language description

The surface of three different kinds of coal was modified by three surfactants (cationic, anionic, and non-ionic). Changes on coal surface were examined by the zeta potential technique. The influence of the dispersion of pH, concentration of surfactants,and contact time were investigated. The most significant change in zeta potential resulting from adding surfactants was observed in activated coal (hydrophobic surface, largest BET surface area). Adding the cationic surfactant led to an increase of thezeta potential, contrary to measuring done in water. The anionic surfactant decreased the value of the zeta potential; however, this change was not too remarkable. The results proved that even a very low concentration of the cationic surfactant (0.01 mmol/L) causes a remarkable change of the zeta potential. On the other hand, a similar effect was observed until the concentration of the anionic surfactant reached about 10 mmol/L.

Czech name

Vliv tenzidů na zeta potenciál uhlí

Czech description

Pomocí tří různých typů tenzidů byl modifikován povrch uhlí. Změny na povrchu uhelných částic byly sledovány pomocí měření zeta potenciálu. Sledován byl vliv pH, koncentrace tenzidů a kontaktní doba. Největší změny byly zaznamenány u aktivního uhlí. Přídavek kationaktivního tenzidu vedl ke zvýšení hodnoty zeta potenciálu, anioaktivní tenzid způsobil jeho pokles a přítomnost neionogenního tenzidu neměla na zeta potenciál uhlí výrazný vliv.

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

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2009

Confidentiality

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

Name of the periodical

ENERG SOURCE PART A

ISSN

1556-7036

e-ISSN

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Volume of the periodical

31

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

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UT code for WoS article

000261188900007

EID of the result in the Scopus database

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