J 2005

Total dynamics of quartz-water system at ambient conditions

FAIMON, Jiří

Basic information

Original name

Total dynamics of quartz-water system at ambient conditions

Name in Czech

Celková dynamika systému křemen-voda za normálních podmínek

Authors

FAIMON, Jiří (203 Czech Republic, guarantor)

Edition

Aquatic Geochemistry, Netherlands, Springer Netherlands, 2005, 1380-6165

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

Geochemistry

Country of publisher

Netherlands

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 0.963

RIV identification code

RIV/00216224:14310/05:00030986

Organization unit

Faculty of Science

UT WoS

000228868000002

Keywords (in Czech)

komplex; rozpouštění; dynamika; tok; růst; modelování; PHREEQC; křemen; povrch

Keywords in English

complex; dissolution; dynamics; flux; growth; modeling; PHREEQC; quartz; surface

Tags

Tags

International impact, Reviewed
Změněno: 23/9/2009 15:29, doc. Ing. Jiří Faimon, Dr.

Abstract

ORIG CZ

V originále

New data on the dissolution and growth of quartz in acid, nearly neutral and slightly alkaline solutions at ambient conditions are presented. During batch dissolutions, aqueous Si-concentrations increased nonlinearly towards limit values. During parallel growth experiments, however, the high Si-concentrations corresponding to 13-fold supersaturation with respect to quartz did not decreased. To interpret these results, two dynamic models (1) a reaction model and (2) a surface-complexation model, were derived. Both models were focused on (a) reversible dissolution/growth of bulk quartz and b) irreversible dissolution of disturbed quartz (weakly bounded Si-atoms) on new surface.

In Czech

New data on the dissolution and growth of quartz in acid, nearly neutral and slightly alkaline solutions at ambient conditions are presented. During batch dissolutions, aqueous Si-concentrations increased nonlinearly towards limit values. During parallel growth experiments, however, the high Si-concentrations corresponding to 13-fold supersaturation with respect to quartz did not decreased. To interpret these results, two dynamic models (1) a reaction model and (2) a surface-complexation model, were derived. Both models were focused on (a) reversible dissolution/growth of bulk quartz and b) irreversible dissolution of disturbed quartz (weakly bounded Si-atoms) on new surface.

Links

MSM0021622412, plan (intention)
Name: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Acronym: INCHEMBIOL)
Investor: Ministry of Education, Youth and Sports of the CR, Interactions among the chemicals, environment and biological systems and their consequences on the global, regional and local scales (INCHEMBIOL)