Made available in DSpace on 2014-12-17T15:42:01Z (GMT). No. of bitstreams: 1
LuizCDB_DISSERT.pdf: 2635764 bytes, checksum: a9af996a27546dc8a59f234cdabe7aad (MD5)
Previous issue date: 2012-12-14 / In this work were synthesized matrix-based commercial white clay in its
composition having large amounts of kaolinite and quartz, with a certain percentage of iron
oxide for use as an adsorbent for hydrogen sulfide (H2S). To characterize the effect of
initial matrix techniques were used to characterize XRD, FTIR, XRF and TG. The initial
clay mineral matrix was placed in contact with 0.1 molar solutions of the salts of Co2+,
Ni2+, Cr3+ and a solution 0.1 g / 100ml rhodamine B. During the synthesis process, the
solutions were placed in contact with the initial matrix for a period of 48 hours in order to
have ion exchange with the clay mineral. To check the amount of exchanged metals, we
used the technique of X-ray Fluorescence (XRF). After synthesis was initiated the process
of adsorption of H2S, where the arrays were placed in the reactor, then by passing a stream
of hydrogen sulfide. The matrix along with the reactor was weighed before and after to
measure the amount of gas adsorbed. Based on the gravimetric data the matrix which had
the highest performance of the adsorption matrix was exchanged with Ni2+ ions, obtaining
a result of 11.13 mg H2S / g matrix, then the matrix coated with rhodamine B which was
reached 10.13 mg H2S / g matrix / Neste trabalho foram sintetizadas matrizes a base de argila branca comercial que
possui em sua composi??o grande quantidade de caulinita e quartzo, com certo percentual
de ?xido de ferro, para uso como adsorvente de sulfeto de hidrog?nio (H2S). Para efeito de
caracteriza??o da matriz inicial foram utilizadas as t?cnicas de caracteriza??o DRX, FTIR,
FRX e TG. A matriz argilomineral inicial foi colocada em contato com solu??es 0,1 molar
dos sais de Co2+, Ni2+, Cr3+ e com uma solu??o 0,1 g/ 100ml de rodamina B. Durante o
processo de s?ntese, as solu??es foram colocadas em contato com a matriz inicial por um
per?odo de 48 horas a fim de haver troca i?nica com o argilomineral. Para verificar a
quantidade de metais trocados, foi utilizada a t?cnica de Fluoresc?ncia de Raios X (FRX).
Ap?s a s?ntese foi iniciado o processo de adsor??o de H2S, onde as matrizes foram
colocadas no reator, passando em seguida por um fluxo cont?nuo de sulfeto de hidrog?nio.
A matriz juntamente com o reator foi pesada antes e depois para aferir a quantidade de g?s
adsorvida. Com base nos dados gravim?tricos a matriz que obteve o maior desempenho de
adsor??o foi a matriz trocada com ?ons Ni2+, obtendo um resultado de 11,13 mg de H2S/ g
de matriz, seguida pela matriz recoberta com rodamina B a qual chegou-se a 10,13 mg de
H2S/ g de matriz
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/17677 |
| Date | 14 December 2012 |
| Creators | Batista, Luiz Carlos Domingos |
| Contributors | CPF:59668741404, http://lattes.cnpq.br/6868773742105583, Dantas, Deyse de Souza, CPF:02771919478, http://lattes.cnpq.br/3229830569545582, Sousa, Emanuel Alves de, CPF:00823037460, http://lattes.cnpq.br/8566005165321301, Motta, Fabiana Villela da, CPF:24779953839, http://lattes.cnpq.br/9918299069511517, Menezes, Jorge Fernando Silva de, CPF:56967950487, http://lattes.cnpq.br/7799441763950977, Farias, Robson Fernandes de |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Qu?mica, UFRN, BR, F?sico-Qu?mica; Qu?mica |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
Page generated in 0.024 seconds