Suitability of static tests for acid rock drainage assessment of mine waste rock

In the present study, eight rock samples were analysed with a modified acid-base accounting (ABA) test and the corresponding net acid generation (NAG) test. In addition, the main and trace elements solubilised during the tests were determined with ICP-OES/MS. Both the modified ABA and NAG tests clas...
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Autor*in:	M.L. Räisänen [verfasserIn] P.M. Kauppila [verfasserIn] T. Myöhänen [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2010

Schlagwörter:	Static tests modified ABA single NAG test neutralization potential acid potential mine waste trace element extractability

Übergeordnetes Werk:	In: Bulletin of the Geological Society of Finland - Geological Society of Finland, 2008, 82(2010), 2, Seite 101-111
Übergeordnetes Werk:	volume:82 ; year:2010 ; number:2 ; pages:101-111

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc Journal toc

DOI / URN:	10.17741/bgsf/82.2.003

Katalog-ID:	DOAJ066041546

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callnumber-first	Q - Science
author	M.L. Räisänen
spellingShingle	M.L. Räisänen misc QE1-996.5 misc Static tests misc modified ABA misc single NAG test misc neutralization potential misc acid potential misc mine waste misc trace element extractability misc Geology Suitability of static tests for acid rock drainage assessment of mine waste rock
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topic_title	QE1-996.5 Suitability of static tests for acid rock drainage assessment of mine waste rock Static tests modified ABA single NAG test neutralization potential acid potential mine waste trace element extractability
topic	misc QE1-996.5 misc Static tests misc modified ABA misc single NAG test misc neutralization potential misc acid potential misc mine waste misc trace element extractability misc Geology
topic_unstemmed	misc QE1-996.5 misc Static tests misc modified ABA misc single NAG test misc neutralization potential misc acid potential misc mine waste misc trace element extractability misc Geology
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title	Suitability of static tests for acid rock drainage assessment of mine waste rock
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title_full	Suitability of static tests for acid rock drainage assessment of mine waste rock
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title_sort	suitability of static tests for acid rock drainage assessment of mine waste rock
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title_auth	Suitability of static tests for acid rock drainage assessment of mine waste rock
abstract	In the present study, eight rock samples were analysed with a modified acid-base accounting (ABA) test and the corresponding net acid generation (NAG) test. In addition, the main and trace elements solubilised during the tests were determined with ICP-OES/MS. Both the modified ABA and NAG tests classified the rock samples with a low sulphide-S content (0.1-0.4%) and low carbonate mineral content (<0.2%) into the category of 'potentially acid generating'. The low neutralization potentials of these rocks were partly due to additional acid produced in silicate weathering, upon the hydrolyzation of Fe and Al during the tests. In contrast to the modified ABA, the contribution of slowly reactive carbonate minerals to the neutralisation potential was seen in the NAG test and in the carbonate NP calculation, as they classified the rock samples containing these minerals into the category of 'non-acid generating'. This supports the use of the carbonate neutralizing potential (NP) and/or the NAG test in mine waste screening. In the NAG test, acid generation and neutralization reactions either raising or decreasing the pH significantly influenced the solubility of trace metals and Al. This suggests that the extract contents could be useful in assessing contaminant mobility during long-term acid generating reactions.
abstractGer	In the present study, eight rock samples were analysed with a modified acid-base accounting (ABA) test and the corresponding net acid generation (NAG) test. In addition, the main and trace elements solubilised during the tests were determined with ICP-OES/MS. Both the modified ABA and NAG tests classified the rock samples with a low sulphide-S content (0.1-0.4%) and low carbonate mineral content (<0.2%) into the category of 'potentially acid generating'. The low neutralization potentials of these rocks were partly due to additional acid produced in silicate weathering, upon the hydrolyzation of Fe and Al during the tests. In contrast to the modified ABA, the contribution of slowly reactive carbonate minerals to the neutralisation potential was seen in the NAG test and in the carbonate NP calculation, as they classified the rock samples containing these minerals into the category of 'non-acid generating'. This supports the use of the carbonate neutralizing potential (NP) and/or the NAG test in mine waste screening. In the NAG test, acid generation and neutralization reactions either raising or decreasing the pH significantly influenced the solubility of trace metals and Al. This suggests that the extract contents could be useful in assessing contaminant mobility during long-term acid generating reactions.
abstract_unstemmed	In the present study, eight rock samples were analysed with a modified acid-base accounting (ABA) test and the corresponding net acid generation (NAG) test. In addition, the main and trace elements solubilised during the tests were determined with ICP-OES/MS. Both the modified ABA and NAG tests classified the rock samples with a low sulphide-S content (0.1-0.4%) and low carbonate mineral content (<0.2%) into the category of 'potentially acid generating'. The low neutralization potentials of these rocks were partly due to additional acid produced in silicate weathering, upon the hydrolyzation of Fe and Al during the tests. In contrast to the modified ABA, the contribution of slowly reactive carbonate minerals to the neutralisation potential was seen in the NAG test and in the carbonate NP calculation, as they classified the rock samples containing these minerals into the category of 'non-acid generating'. This supports the use of the carbonate neutralizing potential (NP) and/or the NAG test in mine waste screening. In the NAG test, acid generation and neutralization reactions either raising or decreasing the pH significantly influenced the solubility of trace metals and Al. This suggests that the extract contents could be useful in assessing contaminant mobility during long-term acid generating reactions.
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title_short	Suitability of static tests for acid rock drainage assessment of mine waste rock
url	https://doi.org/10.17741/bgsf/82.2.003 https://doaj.org/article/da4df1d16e5240718cf89ef86591f78d http://www.geologinenseura.fi/bulletin/Volume82/Raisanen_2010.pdf https://doaj.org/toc/0367-5211 https://doaj.org/toc/1799-4632
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