Alkali binding by magnesium silicate hydrates

Bernard, Ellina; Lothenbach, Barbara; Pochard, Isabelle; Cau-Dit-Coumes, Céline (2019). Alkali binding by magnesium silicate hydrates. Journal of the American Ceramic Society, 102(10), pp. 6322-6336. American Ceramic Society 10.1111/jace.16494

[img] Text
Bernard_et_al-2019-Journal_of_the_American_Ceramic_Society.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (1MB) | Request a copy

The binding of Na+, K+, and Li+ by magnesium silicate hydrate (M–S–H) was investigated in batch sorption experiments. Sorption isotherms and cation exchange measurements indicated the binding of alkalis in cation exchange sites compensating the negative surface charge of M–S–H. Higher pH values led to further deprotonation of the silanol groups and a higher alkali uptake by M–S–H. No significant incorporation of alkalis in the main silica or magnesium oxide sheets was observed. However, the silica sheets were less polymerized in the presence of higher alkali hydroxide concentrations.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geological Sciences
08 Faculty of Science > Institute of Geological Sciences > Rock-Water Interaction

UniBE Contributor:

Bernard, Ellina Françoise Michelle

Subjects:

500 Science > 550 Earth sciences & geology
600 Technology > 690 Building & construction

ISSN:

0002-7820

Publisher:

American Ceramic Society

Language:

English

Submitter:

Ellina Françoise Michelle Bernard

Date Deposited:

03 Dec 2019 10:45

Last Modified:

03 Dec 2019 10:45

Publisher DOI:

10.1111/jace.16494

BORIS DOI:

10.7892/boris.135737

URI:

https://boris.unibe.ch/id/eprint/135737

Actions (login required)

Edit item Edit item
Provide Feedback