IARA MARIA CARNEIRO DE CAMARGO BIGNARDI
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Artigo IPEN-doc 26462 Long-term leaching of As, Cd, Mo, Pb, and Zn from coal fly ash in column test2019 - LANGE, C.N.; FLUES, M.; HIROMOTO, G.; BOSCOV, M.E.G.; CAMARGO, I.M.C.Globally, millions of tons of coal fly ash (CFA) are generated per year, and the majority of this material is usually stored in stock piles or landfills, and in a long-term, it can be an environmental hazard if rainwater infiltrates the ashes. Long-term leaching studies of Brazilian ashes are scarce. The purpose of this study was to evaluate arsenic, cadmium, molybdenum, lead, and zinc leaching behavior from a Brazilian CFA by a column experiment designed to simulate field conditions: slightly acid rain considering seasonality of precipitation and temperature for a long-term leaching period (336 days). All elements were leached from CFA, except lead. Elements leaching behavior was influenced by leaching time, leaching volume, and temperature. Higher leachability of As and Cd from CFA during warm and wet season was observed. Results indicate a potential risk to soil and groundwater, since ashes are usually stored in uncovered fields on power plants vicinity.Artigo IPEN-doc 22766 A Brazilian coal fly ash as a potential source of rare earth elements2017 - LANGE, CAMILA N.; CAMARGO, IARA M.C.; FIGUEIREDO, ANA MARIA G.M.; CASTRO, LILIANA; VASCONCELLOS, MARINA B.A.; TICIANELLI, REGINA B.Rare earth elements (REEs) have several applications and their market demands have increased. Recently, coal fly ash (CFA) has been considered as a source of these elements. The purpose of this study was to evaluate the REEs content in a CFA from a Brazilian coal power plant by instrumental neutron analysis, to classify it according to commercial purposes and to assess the weathering impact in the REEs content, since it is held in fields nearby the power plant. The results pointed no significant REEs leachability and indicated this CFA as a promising REEs source.Resumo IPEN-doc 22493 Rare earth elements content and leachability in coal fly ash from figueira coal power plant2016 - LANGE, CAMILA N.; VASCONCELLOS, MARINA B.A.; FIGUEIREDO, ANA M.G.; CAMARGO, IARA M.C. de; CASTRO, LILIANA; TICIANELLI, REGINA B.Artigo IPEN-doc 16732 Lixiviação de elementos tóxicos em solo contaminado com cinza2011 - LANGE, CAMILA N.; SILVA, JULIANA C.; CAMARGO, IARA M.C. deArtigo IPEN-doc 19909 Sandy soil contamination with coal fly ash by long term leaching test2011 - LANGE, CAMILA N.; BOSCOV, MARIA E.G.; CAMARGO, IARA M.C.Artigo IPEN-doc 19908 Avaliação da lixiviação de Mo, Cd, Zn, As e Pb de cinza de carvão oriunda da Termelétrica de Figueira, Paraná2011 - LANGE, C.N.; SILVA, J.C.; BOCCI, C.S.; CAMARGO, I.M.C. deResumo IPEN-doc 08381 Avaliacao da contaminacao biodisponivel de metais no solo sob influencia da atividade de uma termoeletrica a carvao2001 - CAMARGO, I.M.C.; HAMA, P.; COTRIM, M.E.B.; FIGUEIREDO FILHO, P.M.; FLUES, M.S.M.Artigo IPEN-doc 10598 Radionuclides concentration in coal used in brazilian power plants2005 - FLUES, M.; CAMARGO, I.M.C.; FIGUEIREDO FILHO, P.M.; SILVA, P.S.C.; MAZZILLI, B.P.Artigo IPEN-doc 11735 Radioactivity of coal and ashes from Figueira coal power plant in Brazil2006 - FLUES, M.; CAMARGO, IARA M.C.; SILVA, P.S.C.; MAZZILLI, B.P.Artigo IPEN-doc 11903 Evaluation of radionuclides concentration in Brazilian coals2007 - FLUES, M.; CAMARGO, I.M.C.; FIGUEIREDO FILHO, P.M.; SILVA, P.S.C.; MAZZILLI, B.P.