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Previous issue date: 2015-01-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / O presente trabalho prop?s o estudo do tratamento de um efluente sint?tico
contaminado com BTX por eletro-oxida??o em batelada com o ?nodo de Ti/PbO2, e a
adsor??o de BTX utilizando perlita expandida como material adsorvente, tendo como objetivo
avaliar as melhores condi??es operacionais em ambas as metodologias a fim de realizar um
tratamento sequencial (adsor??o e eletro-oxida??o) e obter uma maior efici?ncia na remo??o
dos compostos. As condi??es operacionais avaliadas foram: temperatura, densidade de
corrente aplicada e quantidade de material adsorvente, atrav?s de an?lises de UV-vis e
Demanda Qu?mica de Oxig?nio (DQO). De acordo com os resultados experimentais obtidos,
o tratamento eletro-oxidativo se mostrou eficiente na degrada??o dos compostos BTX
(Benzeno, Tolueno e Xilenos) no efluente sint?tico em raz?o das propriedades
eletrocatal?ticas do ?nodo de Ti/PbO2. A densidade de corrente aplicada e a temperatura
promoveram o aumento da efici?ncia da remo??o de DQO, chegando a obter percentuais
superiores a 70%. No processo de adsor??o, o aumento da temperatura n?o se mostrou um
fator determinante para a remo??o da mat?ria org?nica, enquanto que o aumento na
quantidade de material adsorvente levou a um acr?scimo no percentual de remo??o, obtendo
66,30% utilizando 2g de adsorvente. As condi??es operacionais selecionadas de ambos os
tratamentos realizados separadamente levaram em considera??o a efici?ncia de remo??o da
mat?ria org?nica, e o baixo consumo energ?tico e custos operacionais, logo, o tratamento
sequencial se mostrou satisfat?rio atingindo 87,26% de remo??o de DQO utilizando a
adsor??o como um pr?-tratamento. A quantifica??o do BTX atrav?s das an?lises de
cromatografia gasosa ao t?rmino dos tratamentos tamb?m confirmou a efici?ncia da remo??o
dos compostos org?nicos, outorgando proeminentes vantagens ao tratamento sequencial. / This paper proposed the study of the treatment of a synthetic wastewater contaminated
with BTX by electro-oxidation batch with the anode of Ti/PbO2, and the adsorption of BTX
using expanded perlite as adsorbent material, and to evaluate the best operating conditions
both methods in order to perform a sequential treatment (adsorption and electro-oxidation)
and achieve greater efficiency in the removal of the compounds. The operating conditions
were measured: temperature, current density and applied amount of the adsorbent material, by
UV-VIS analysis and Demand Chemical oxygen demand (COD). According to the
experimental results, the electro-oxidative treatment was efficient in the degradation of the
compounds BTX (benzene, toluene and xylenes) in synthetic sewage due to the
electrochemical properties of the anode of Ti/PbO2. The applied current density and
temperature promoted increased efficiency of COD removal, reaching obtain percentages
greater than 70%. In the adsorption process, the temperature increase was not a factor in the
removal of organic matter, while the increase in the amount of adsorbent material led to an
increase in the percentage removal, obtaining 66.30% using 2 g of adsorbent. The selected
operating conditions of both treatments performed separately take into account the removal
efficiency of organic matter, and the low energy consumption and operating costs, so the
sequential treatment were satisfactory reaching 87.26% of COD removal using adsorption as a
pretreatment. Quantification of BTX through the analysis of gas chromatography at the end of
the treatments also confirmed the removal efficiency of organic compounds, giving
outstanding advantages to sequential treatment.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/20180 |
| Date | 26 January 2015 |
| Creators | Almeida, Camila Carvalho de |
| Contributors | 01139059980, http://lattes.cnpq.br/2485073932883264, Ara?jo, Danyelle Medeiros de, 00974778427, http://lattes.cnpq.br/5376210566183962, Moura, Dayanne Chianca de, 04719087469, http://lattes.cnpq.br/5569739045933136, Pergher, Sibele Berenice Castella, 50942611004, http://lattes.cnpq.br/5249001430287414, Huitle, Carlos Alberto Martinez |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM CI?NCIA E ENGENHARIA DE PETR?LEO, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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