Ageing and collapse of Bentonite gels - Effects of Mg(II), Ca(II) and Ba(II) ions

Pek Ing Au; P. Pillai; Yee-Kwong Leong

doi:10.1016/j.clay.2015.05.018

Ageing and collapse of Bentonite gels - Effects of Mg(II), Ca(II) and Ba(II) ions

Pek Ing Au, P. Pillai, Yee-Kwong Leong

Research output: Contribution to journal › Article

5 Citations (Scopus)

Abstract

© 2015 Elsevier B.V. The ageing and stability behaviour of Bentonite slurries were evaluated under the influence of Mg²⁺, Ca²⁺ and Ba²⁺ ions at concentration ranging from 0.005 to 1M. Stable gels were formed at low metal ion concentration of +, K⁺ and Cs⁺ ions. Also the settling layer of divalent metal ion weakened gels did not consolidate as effectively. The stability time of these weakened gels was found to decrease with increasing hydration bond length of the divalent metal ions, i.e. Ba(II)0.02M Mg²⁺, Ca²⁺ and Ba²⁺.

Original language	English
Pages (from-to)	141-150
Journal	Applied Clay Science
Volume	114
DOIs	https://doi.org/10.1016/j.clay.2015.05.018
Publication status	Published - 2015

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title = "Ageing and collapse of Bentonite gels - Effects of Mg(II), Ca(II) and Ba(II) ions",

abstract = "{\textcopyright} 2015 Elsevier B.V. The ageing and stability behaviour of Bentonite slurries were evaluated under the influence of Mg2+, Ca2+ and Ba2+ ions at concentration ranging from 0.005 to 1M. Stable gels were formed at low metal ion concentration of +, K+ and Cs+ ions. Also the settling layer of divalent metal ion weakened gels did not consolidate as effectively. The stability time of these weakened gels was found to decrease with increasing hydration bond length of the divalent metal ions, i.e. Ba(II)0.02M Mg2+, Ca2+ and Ba2+.",

author = "Au, {Pek Ing} and P. Pillai and Yee-Kwong Leong",

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journal = "Applied Clay Science",

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T1 - Ageing and collapse of Bentonite gels - Effects of Mg(II), Ca(II) and Ba(II) ions

AU - Au, Pek Ing

AU - Pillai, P.

AU - Leong, Yee-Kwong

PY - 2015

Y1 - 2015

N2 - © 2015 Elsevier B.V. The ageing and stability behaviour of Bentonite slurries were evaluated under the influence of Mg2+, Ca2+ and Ba2+ ions at concentration ranging from 0.005 to 1M. Stable gels were formed at low metal ion concentration of +, K+ and Cs+ ions. Also the settling layer of divalent metal ion weakened gels did not consolidate as effectively. The stability time of these weakened gels was found to decrease with increasing hydration bond length of the divalent metal ions, i.e. Ba(II)0.02M Mg2+, Ca2+ and Ba2+.

AB - © 2015 Elsevier B.V. The ageing and stability behaviour of Bentonite slurries were evaluated under the influence of Mg2+, Ca2+ and Ba2+ ions at concentration ranging from 0.005 to 1M. Stable gels were formed at low metal ion concentration of +, K+ and Cs+ ions. Also the settling layer of divalent metal ion weakened gels did not consolidate as effectively. The stability time of these weakened gels was found to decrease with increasing hydration bond length of the divalent metal ions, i.e. Ba(II)0.02M Mg2+, Ca2+ and Ba2+.

U2 - 10.1016/j.clay.2015.05.018

DO - 10.1016/j.clay.2015.05.018

M3 - Article

VL - 114

SP - 141

EP - 150

JO - Applied Clay Science

JF - Applied Clay Science

SN - 0169-1317

ER -