Dissolution study of tremolite and anthophyllite: pH effect on the reaction kinetics

Rozalén, Marisa; Ramos, M. Elena; Gervilla, Fernando; Kerestedjian, Thomas; Fiore, Saverio; Huertas, F. Javier

doi:10.1016/j.apgeochem.2014.06.009

Cited by 13 publications

(9 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There is agreement also with Rozalen et al . 24 (logR = −11 at pH = 4). The same applies to tremolite 24 : logR = −13 at pH = 4.…”

Section: Discussionmentioning

confidence: 99%

“… 24 (logR = −11 at pH = 4). The same applies to tremolite 24 : logR = −13 at pH = 4. Concerning chrysotile, dissolution rates (Table 1 ) are in the range 1.7–2.3 × 10 −10 mol·m −2 s −1 , in agreement with Hume and Rimstidt 25 (4.38–6.27 × 10 −10 mol·m −2 s −1 for chrysotile dissolution rates at pH = 4).…”

Section: Discussionmentioning

confidence: 99%

“…Regarding in vitro acellular dissolution studies, earlier works 23 , 24 demonstrated that chrysotile dissolves faster than anthophyllite and tremolite asbestos, along the entire pH scale (R = dissolution rate, R chr > R ant >> R trm ).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

In vitro acellular dissolution of mineral fibres: A comparative study

Gualtieri

Pollastri

Gandolfi

et al. 2018

Sci Rep

View full text Add to dashboard Cite

The study of the mechanisms by which mineral fibres promote adverse effects in both animals and humans is a hot topic of multidisciplinary research with many aspects that still need to be elucidated. Besides length and diameter, a key parameter that determines the toxicity/pathogenicity of a fibre is biopersistence, one component of which is biodurability. In this paper, biodurability of mineral fibres of social and economic importance (chrysotile, amphibole asbestos and fibrous erionite) has been determined for the first time in a systematic comparative way from in vitro acellular dissolution experiments. Dissolution was possible using the Gamble solution as simulated lung fluid (pH = 4 and at body temperature) so to reproduce the macrophage phagolysosome environment. The investigated mineral fibres display very different dissolution rates. For a 0.25 μm thick fibre, the calculated dissolution time of chrysotile is in the range 94–177 days, very short if compared to that of amphibole fibres (49–245 years), and fibrous erionite (181 years). Diffraction and SEM data on the dissolution products evidence that chrysotile rapidly undergoes amorphization with the formation of a nanophasic silica-rich fibrous metastable pseudomorph as first dissolution step whereas amphibole asbestos and fibrous erionite show minor signs of dissolution even after 9–12 months.

show abstract

“…There is agreement also with Rozalen et al . 24 (logR = −11 at pH = 4). The same applies to tremolite 24 : logR = −13 at pH = 4.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

In vitro acellular dissolution of mineral fibres: A comparative study

Gualtieri

Pollastri

Gandolfi

et al. 2018

Sci Rep

View full text Add to dashboard Cite

show abstract

“… In this study, the relative reactivity of the average mineral class content of 30% was used a In soil, at pH 5 b Phlogopite added to the intermediate-weathering class based on Schweda and Kalinowski ( 1994 ) c Anthophyllite added to the intermediate-weathering class based on Chen and Brantley ( 1998 ) and Rozalen et al ( 2014 ) …”

Section: Methodsmentioning

confidence: 99%

“…c Anthophyllite added to the intermediate-weathering class based on Chen and Brantley ( 1998 ) and Rozalen et al ( 2014 )…”

Section: Methodsmentioning

confidence: 99%

Comparison of static and mineralogical ARD prediction methods in the Nordic environment

Karlsson

Räisänen

Lehtonen

et al. 2018

Environ Monit Assess

View full text Add to dashboard Cite

Acid rock drainage (ARD) is a major problem related to the management of mining wastes, especially concerning deposits containing sulphide minerals. Commonly used tests for ARD prediction include acid–base accounting (ABA) tests and the net acid generation (NAG) test. Since drainage quality largely depends on the ratio and quality of acid-producing and neutralising minerals, mineralogical calculations could also be used for ARD prediction. In this study, several Finnish waste rock sites were investigated and the performance of different static ARD test methods was evaluated and compared. At the target mine sites, pyrrhotite was the main mineral contributing to acid production (AP). Silicate minerals were the main contributors to the neutralisation potential (NP) at 60% of the investigated mine sites. Since silicate minerals appear to have a significant role in ARD generation at Finnish mine waste sites, the behaviour of these minerals should be more thoroughly investigated, especially in relation to the acid produced by pyrrhotite oxidation. In general, the NP of silicate minerals appears to be underestimated by laboratory measurements. For example, in the NAG test, the slower-reacting NP-contributing minerals might require a longer time to react than is specified in the currently used method. The results suggest that ARD prediction based on SEM mineralogical calculations is at least as accurate as the commonly used static laboratory methods.

show abstract

Amphibolite dissolution mechanism under chlorine-rich conditions during freeze-thaw cycles

Huang

Gao

et al. 2023

Applied Geochemistry

View full text Add to dashboard Cite

Dissolution study of tremolite and anthophyllite: pH effect on the reaction kinetics

Cited by 13 publications

References 27 publications

In vitro acellular dissolution of mineral fibres: A comparative study

In vitro acellular dissolution of mineral fibres: A comparative study

Comparison of static and mineralogical ARD prediction methods in the Nordic environment

Amphibolite dissolution mechanism under chlorine-rich conditions during freeze-thaw cycles

Contact Info

Product

Resources

About