Physico-Mineralogical Characterization: Bentonitic Clays Recently Found in Olivedos, Paraíba, Brazil

Abstract:

Used in various branches of the industry, bentonitic clays are considered a valuable mineral, used specially in the petroleum industry for manufacturing of fluids used the drilling of petroleum wells in long depth. Recently, a deposit of this valuable mineral was discovered in the town of Olivedos-PB. There are data that prove that this is a very poor and underdeveloped town. So, this work aims at the physico-mineralogical characterization of clays recently discovered and, this way, verify if they present similar characteristics which allow them to replace the clays from Boa Vista-PB, and if they can be used by the industry, thus bringing social development for that town. The characterization was made by means of the analysis of chemical composition by X-ray fluorescence (EDX), thermogravimetric and thermal differential analyses (TG and DTA), X-ray diffraction (XRD), cation-exchange capacity (CEC) and specific area (SA). The results show that the clays recently discovered in Olivedos-PB are polycationic clays, presenting MgO, CaO and K₂O content, and that they are constituted by smectitic clay mineral, by quartz and kaolinite.

• Periodical: Materials Science Forum (Volume 820)
• Pages: 56-59
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.820.56
• Online since: June 2015
• Authors: F.K.A. Sousa*, I.A. Silva, W.S. Cavalcanti, Gelmires Araújo Neves, Heber Carlos Ferreira
• Keywords: Bentonite, Clay, Mineralogical Characterization, Paraíba

References

[1] J.S.B. Araujo, P.S.C. Farias, A.J. Sá: Mineração e industrialização da bentonita e as transformações/permanências no espaço agrário de Boa vista: um estudo de caso dos Sítios Bravo e Urubu. In: Revista de Geografia. Recife: UFPE – DCG/NAPA, v. 25, n. 3, set/dez, (2008).

[2] E.S. Ferreira, W.S. Lira, G.A. Cândido: Engenharia Ambiental Vol. 7 (3) (2010), pp.74-91.

[3] T.R. Gopinath, V.C.A. Cruz, J.A. Freire: Revista de GeologiaVol. 16 (1) (2003), pp.35-4.

[4] R.E. GRIM, N. NUVEN: Bentonites: Geology, Mineralogy, Properties and Uses. (Elsevier Scientific Publishing Company, Amsterdam, 1978).

[5] Instituto Brasileiro de Geografia e Estatística (IBGE). Levantamento da Renda dos Municípios, feito pela CPS/FGV a partir dos mesodados do Censo 2010/IBGE, (2010).

DOI: 10.33026/peg.v14i1.2068

[6] PORTAL ODM – Acompanhamento Municipal dos Objetivos de Desenvolvimento do Milênio. Perfil Municipal de Olivedos, Paraíba, 2010. Disponível em: SIAB - Sistema de Informações da Atenção Básica. Número de crianças pesadas pelo Programa Saúde Familiar em Olivedos, 2001. Disponível em: <http: /www2. datasus. gov. br/SIAB/index. php>. Acesso em 26 de Novembro de (2011).

DOI: 10.11606/d.22.2009.tde-29102009-142404

[7] I.A. Silva, J.M.R. Costa, R.R. Menezes, H.S. Ferreira, G.A. Neves, H.C. Ferreira: R. Esc. Minas, Ouro Preto Vol. 66 (4) (2013), p.485.

[8] F.R. Valenzuela Díaz, P. Souza Santos, H. Souza Santos: Química Industrial Vol. 42 (1992), pp.33-37.