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Publikační činnost

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Typ záznamu * :	článek v odborném periodiku (J)
Domácí pracoviště * :	Katedra chemie (31500)
Název * :	The influence of surfactants on the zeta potential of coals
Citace :	Maršálek, R. The influence of surfactants on the zeta potential of coals. ENERG SOURCE PART A. 2009, roč. 31, s. 66-75. ISSN 1556-7036.

Podnázev :
Rok * :	2009
Obor * :	Fyzikální chemie a teoretická chemie
Kód ISSN * :	1556-7036
Oficiální název periodika * :	ENERG SOURCE PART A
Stát vydavatele periodika * :	Spojené státy americké
Svazek periodika * :	Neuveden
Číslo periodika v rámci svazku * :	1
Číslo článku :
Ročník :	31
Počet stran článku * :	10
Strana od * :	66
Strana do * :	75
Kód UT WoS :	000261188900007
EID :
Poddruh recenzovaného článku :	Článek v impaktovaném časopise (Jimp)

Klíčová slova anglicky * :	zeta potential, surfactants, coal
Popis v původním jazyce * :	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 the zeta 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.
Popis v anglickém jazyce * :	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 the zeta 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.

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R01:	RIV/61988987:17310/09:A0900S0R

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