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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
13/10/2021 |
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Data da última atualização: |
13/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TORKAMAN, P.; VEIGA, M. M.; LIMA, L. R. P. de ANDRADE; OLIVEIRA, L. A. de; MOTTA, J. da S.; JESUS, J. L. de; LAVKULICH, L. M. |
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Afiliação: |
P. TORKAMAN, University of British Columbia; M. M. VEIGA, University of British Columbia; L. R. P. DE ANDRADE LIMA, UFBA; LUCIANA ALVES DE OLIVEIRA, CNPMF; JOSELITO DA SILVA MOTTA, CNPMF; JACIENE LOPES DE JESUS, CNPMF; L. M. LAVKULICH, University of British Columbia. |
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Título: |
Leaching gold with cassava: an option to eliminate mercury use in artisanal gold mining. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of Cleaner Production, v. 311, 2021. |
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ISSN: |
0959-6526 |
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Idioma: |
Português |
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Conteúdo: |
ABSTRACT Mercury pollution from artisanal gold mining causes severe environmental and health problems, especially to operators and people living around the processing facilities. Over 2000 tonnes/a of mercury is released to the environment by the artisanal miners which is the largest man-made source of mercury pollution. Here we present a novel method using a local plant, cassava, common in many artisanal mining areas in Latin America, Africa, and Asia, to dissolve gold from ores. In our experiments, we used a liquid by-product of cassava flour manufacturing, ?manipueira? to leach gold from the gold ore. It contains hydrogen cyanide, generating from the hydrolysis of cyanogenic glycosides in the cassava plant. The results were very promising to replace the use of mercury, as approximately 50% of the gold content was extracted from the ore in 24 h. |
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Thesagro: |
Mandioca. |
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Thesaurus Nal: |
Cassava. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01515naa a2200229 a 4500
001 2135261
005 2021-10-13
008 2021 bl uuuu u00u1 u #d
022 $a0959-6526
100 1 $aTORKAMAN, P.
245 $aLeaching gold with cassava$ban option to eliminate mercury use in artisanal gold mining.$h[electronic resource]
260 $c2021
520 $aABSTRACT Mercury pollution from artisanal gold mining causes severe environmental and health problems, especially to operators and people living around the processing facilities. Over 2000 tonnes/a of mercury is released to the environment by the artisanal miners which is the largest man-made source of mercury pollution. Here we present a novel method using a local plant, cassava, common in many artisanal mining areas in Latin America, Africa, and Asia, to dissolve gold from ores. In our experiments, we used a liquid by-product of cassava flour manufacturing, ?manipueira? to leach gold from the gold ore. It contains hydrogen cyanide, generating from the hydrolysis of cyanogenic glycosides in the cassava plant. The results were very promising to replace the use of mercury, as approximately 50% of the gold content was extracted from the ore in 24 h.
650 $aCassava
650 $aMandioca
700 1 $aVEIGA, M. M.
700 1 $aLIMA, L. R. P. de ANDRADE
700 1 $aOLIVEIRA, L. A. de
700 1 $aMOTTA, J. da S.
700 1 $aJESUS, J. L. de
700 1 $aLAVKULICH, L. M.
773 $tJournal of Cleaner Production$gv. 311, 2021.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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