FATIMA MARIA SEQUEIRA DE CARVALHO
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Livro IPEN-doc 28984 O IPEN e a economia do hidrogênio2022 - LINARDI, MARCELO; LUGAO, ADEMAR B.; OLIVEIRA NETO, ALMIR; NETTO, ANA P.F.A.; FREITAS, ANDERSON Z. de; YAMAGATA, CHIEKO; ANDRADE, DELVONEI A. de; ZEZELL, DENISE M.; LAZAR, DOLORES R.R.; CUNHA, EDGAR F. da; FONSECA, EDVALDO R.P. da; MUCCILLO, ELIANA N. dos S.; SANTIAGO, ELISABETE I.; SEO, EMILIA S.M.; SPINACE, ESTEVAM V.; FONSECA, FABIO C.; CARVALHO, FATIMA M.S. de; MOREIRA, FERNANDO; COSTA, ISOLDA; IGAMI, MERY P.Z.; NEGRO, MIGUEL L.M.; ARTAXO, PAULO; MUCCILLO, REGINALDO; CASTANHO, SONIA R.H. de M.; USSUI, VALTER; BERGAMASCHI, VANDERLEI S.; YOSHITO, WALTER K.; CALVO, WILSON A.P.Resumo IPEN-doc 22273 Modelagem e interação da produção de hidrogênio pelo processo de reforma a vapor do bioetanol2008 - PENACHIO, PAULO V.L.; CASSIANO, DOUGLAS A.; CARVALHO, FATIMA M.S. deResumo IPEN-doc 05335 Preparação e caracterização de microesferas de zircônia - estudo do comportamento cromatográfico e catalítico2004 - FERNANDES, DEBORA B.; CARVALHO, FATIMA M.S. deCapítulo IPEN-doc 22010 Status report on thechnical progress for LEU-based sup(99)Mo production at IPEN-CNEN/SP, Brazil - Modified Cintichem process2015 - OSSO JUNIOR, J.A.; DIAS, C.R.B.R.; TEODORO, R.; CATANOSO, M.F.; BRAMBILLA, T.P.; POZZO, L.; SQUAIR, P.; FUKUMORI, N.; CARVALHO, F.M.S.; ZINI, J.; CAMILO, R.L.; FORBICINI, C.; YAMAMURA, M.; ARAUJO, I.C.; FREITAS, A.A.; CARVALHO, E.U.; DURAZZO, M.; SILVA, A.M.; PIRES, M.A.; MARUMO, J.T.; DELLAMANO, J.C.; MENGATTI, J.; PERROTTA, J.A.Capítulo IPEN-doc 16640 Materiais avançados para energia2010 - BRESSIANI, JOSE C.; FONSECA, FABIO C.; SERRA, EDUARDO T.; FRAJNDLICH, ELITA U.; SPINACE, ESTEVAM V.; CARVALHO, FATIMA M.S. de; BRAGA, FRANCISCO J.C.; RIELLA, HUMBERTO G.; RAMANATHAN, LALGUDI V.; LEAL NETO, RICARDO M.; BERGAMASCHI, VANDERLEI S.Resumo IPEN-doc 16236 Obtencao de gas de sintese pela gaseificacao de biomassa2010 - SILVA, KLEBER M. da; CASSIANO, DOUGLAS A.; CARVALHO, FATIMA M.S. deResumo IPEN-doc 16185 Estudo do potencial da casca de castanha de caju para a obtencao de hidrogenio2010 - TAVARES, BEATRIZ G.; LINARDI, MARCELO; CARVALHO, FATIMA M.S. deResumo IPEN-doc 12608 Recovery of thorium and rare earth elements from sludge with the aid of anionic exchanger2006 - ABRAO, ALCIDIO; FERREIRA, JOAO C.; SALVADOR, VERA L.R.; ZINI, JOSIANE; CARVALHO, FATIMA M.S. deAbstract During operation of a solvent extraction pilot plant for preparation of pure thorium nitrate, a thorium concentrate produced industrially from monazite processing in São Paulo containing the REE as main impurities and some minor elements like iron, titanium, lead, sodium and silica was dissolved with hot nitric acid following by digestion and addition of flocculants was filtered for the separation of some insoluble fraction. Thorium was extracted with TBP-diluent in a pulsed column. Small amount of this thorium nitrate was used for nuclear research and the gross production was supplied to some companies that manufacture thorium gas light mantle in Brazil. The raffinate still containing some thorium and the totality of REE was treated with sodium hydroxide and the hydroxides as sludge are stocked. Nowadays there is a stockpile of circa 25 ton of the mentioned material. In this work it is reported a process for separation of thorium from rare earth elements (REE) and their recovery from this accumulated sludge. It is dissolved with hot nitric acid, filtered to separate any insoluble and an excess of acid is added. The prepared solution is fed into a strong anion ion exchanger previously treated with 1mol L-1 HNO3. Thorium nitrate as an anionic complex is retained while REE and other impurities are passed to the effluent. This effluent is treated to obtain a rare earth concentrate for future work of individual separation of the elements. The resin could retain only very small amounts of cerium and lanthanum, but both are excluded when the column is saturated with thorium. Thorium nitrate is eluted with diluted nitric acid. The process is operationally simple and was developed and successfully performed keeping in mind a future installation for the recovery of thorium and rare earths from the above mentioned sludge.Resumo IPEN-doc 06363 Resumo IPEN-doc 13571 Preparation of Pb membrane on porous stainless steel support modified with Zr for hydrogen purification2008 - SANTOS, J.L. dos; ZINI, J; CARVALHO, F.M.S.