The influence of surfactants on the adsorption of heavy metal ions by clays

Beveridge, A.; Pickering, W.F.

doi:10.1016/0043-1354(83)90102-1

Cited by 49 publications

(11 citation statements)

References 17 publications

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“…in the IHP of the Stern layer of EDL as Al 3+ form depending on the solution pH (Ersoy and Ç elik, 2002). In addition, the adverse effect of metal ions on the adsorption of different organic cations onto different adsorbents has been reported (Beveridge and Pickering, 1983;Brownawell et al, 1990). On the other hand, the adsorption was found to be independent of solution pH in the range 4À10.…”

Section: Region 3 (C Eq > C 2 )mentioning

confidence: 99%

Effect of Hydrocarbon Chain Length on Adsorption of Cationic Surfactants onto Clinoptilolite

Ersoy

Çelik

2003

Clays and clay miner.

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The adsorption behavior of quaternary ammonium cationic surfactants with different hydrocarbon chain lengths, i.e. HDTMA (hexadecyltrimethylammonium), TDTMA (tetradecyltrimethylammonium) and DDTMA (dodecyltrimethylammonium), onto clinoptilolite has been investigated. The adsorption isotherms of these surfactants are correlated with the z potential curves of clinoptilolite. Accordingly, the applicability of the hemimicelle hypothesis to the adsorption of cationic surfactants at the clinoptilolite/water interface considering in the electrical double layer (EDL) of clinoptilolite is discussed. Even though the adsorption occurs in the EDL of clinoptilolite, the adsorption of HDTMA, TDTMA and DDTMA onto clinoptilolite is not conveniently described by the hemimicelle hypothesis. The absence of all expected marked increase in the z potential curves at the hemimicelle concentration is ascribed to the large external cation exchange capacity (ECEC) of clinoptilolite. The hydrocarbon chain length of surfactant molecules is found to have a significant effect on the ion exchange as well as hydrophobic interaction mechanisms. The effectiveness of both ion exchange and hydrophobic interactions increases with increasing chain length, and so the greatest surfactant adsorption onto clinoptilolite was obtained by HDTMA.

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Section: Region 3 (C Eq > C 2 )mentioning

confidence: 99%

Effect of Hydrocarbon Chain Length on Adsorption of Cationic Surfactants onto Clinoptilolite

Ersoy

Çelik

2003

Clays and clay miner.

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“…Cationic surfactants can also act to reduce the association of metals by competition for some but not all negatively charged surfaces. Beveridge and Pickering (1983) examined a range of surfactants and their effects on sorbed metals. Using anionic surfactants, there appeared to be an increase in association of metal with surfaces by, possibly, sorption of the metal-surfactant combination formed or precipitation of the complexes.…”

Section: Biosurfactants and Metal Solubilizationmentioning

confidence: 99%

Microbial surfactants and their use in field studies of soil remediation

2002

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“…A study of the influence of surfactants on metal-ion adsorption by clays (Beveridge and Pickering, 1983) illustrated some of the complexities of the interaction between organic binding and surface adsorption of metals. The effect of the surfactants was found to be dependent on the charge of the surfactant, as well as on the type of clay.…”

Section: Effect Of Organic Complexation On Adsorption Of Metalsmentioning

confidence: 99%