Evaluation of produced water treatment using advanced oxidation processes and sodium ferrate(VI)

Abstract—Oil and gas exploration is an essential activity for modern society, although the supply of its global demand has caused enough damage to the environment, mainly due to produced water generation, which is an effluent associated with the oil and gas produced during oil extraction. It is the...

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Principais autores: Chiavone Filho, Osvaldo, Mendonça, Erica T. R., Araujo, Caroline Maria Bezerra de, Motta Sobrinho, Maurício A. da
Formato: article
Idioma:English
Publicado em: International Journal of Chemical, Materials and Biomolecular Science
Assuntos:
Advanced oxidation process
Ferrate(VI) ion
Oils and greases removal
Produced water treatment
Endereço do item:https://repositorio.ufrn.br/handle/123456789/44973
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spelling ri-123456789-449732021-11-22T20:00:24Z Evaluation of produced water treatment using advanced oxidation processes and sodium ferrate(VI) Chiavone Filho, Osvaldo Mendonça, Erica T. R. Araujo, Caroline Maria Bezerra de Motta Sobrinho, Maurício A. da Advanced oxidation process Ferrate(VI) ion Oils and greases removal Produced water treatment Abstract—Oil and gas exploration is an essential activity for modern society, although the supply of its global demand has caused enough damage to the environment, mainly due to produced water generation, which is an effluent associated with the oil and gas produced during oil extraction. It is the aim of this study to evaluate the treatment of produced water, in order to reduce its oils and greases content (OG), by using flotation as a pre-treatment, combined with oxidation for the remaining organic load degradation. Thus, there has been tested Advanced Oxidation Process (AOP) using both Fenton and photo-Fenton reactions, as well as a chemical oxidation treatment using sodium ferrate(VI), Na2[FeO4], as a strong oxidant. All the studies were carried out using real samples of produced water from petroleum industry. The oxidation process using ferrate(VI) ion was studied based on factorial experimental designs. The factorial design was used in order to study how the variables pH, temperature and concentration of Na2[FeO4] influences the O&G levels. For the treatment using ferrate(VI) ion, the results showed that the best operating point is obtained when the temperature is 28 °C, pH 3, and a 2000 mg.L-1 solution of Na2[FeO4] is used. This experiment has achieved a final O&G level of 4.7 mg.L-1, which means 94% percentage removal efficiency of oils and greases. Comparing Fenton and photo-Fenton processes, it was observed that the Fenton reaction did not provide good reduction of O&G (around 20% only). On the other hand, a degradation of approximately 80.5% of oil and grease was obtained after a period of seven hours of treatment using photo-Fenton process, which indicates that the best process combination has occurred between the flotation and the photo-Fenton reaction using solar radiation, with an overall removal efficiency of O&G of approximately 89% 2021-11-22T20:00:23Z 2021-11-22T20:00:23Z 2017-01-27 article MENDONÇA, E.T.R.; ARAUJO, C.M.B.; CHIAVONE-FILHO, OSVALDO; Motta, Mauricio da. Evaluation of Produced Water Treatment Using Advanced Oxidation Processes and Sodium Ferrate(VI). WORLD ACADEMY OF SCIENCES (PRINT), v. 11, p. 107-112, 2017. Disponível em: https://zenodo.org/record/1340010#.YJmCAbVKhPY. Acesso em: 28 jun. 2021. https://doi.org/10.5281/zenodo.1340010 2415-6620 https://repositorio.ufrn.br/handle/123456789/44973 10.5281/zenodo.1340010 en Attribution 3.0 Brazil http://creativecommons.org/licenses/by/3.0/br/ application/pdf International Journal of Chemical, Materials and Biomolecular Science
institution Repositório Institucional
collection RI - UFRN
language English
topic Advanced oxidation process
Ferrate(VI) ion
Oils and greases removal
Produced water treatment
spellingShingle Advanced oxidation process
Ferrate(VI) ion
Oils and greases removal
Produced water treatment
Chiavone Filho, Osvaldo
Mendonça, Erica T. R.
Araujo, Caroline Maria Bezerra de
Motta Sobrinho, Maurício A. da
Evaluation of produced water treatment using advanced oxidation processes and sodium ferrate(VI)
description Abstract—Oil and gas exploration is an essential activity for modern society, although the supply of its global demand has caused enough damage to the environment, mainly due to produced water generation, which is an effluent associated with the oil and gas produced during oil extraction. It is the aim of this study to evaluate the treatment of produced water, in order to reduce its oils and greases content (OG), by using flotation as a pre-treatment, combined with oxidation for the remaining organic load degradation. Thus, there has been tested Advanced Oxidation Process (AOP) using both Fenton and photo-Fenton reactions, as well as a chemical oxidation treatment using sodium ferrate(VI), Na2[FeO4], as a strong oxidant. All the studies were carried out using real samples of produced water from petroleum industry. The oxidation process using ferrate(VI) ion was studied based on factorial experimental designs. The factorial design was used in order to study how the variables pH, temperature and concentration of Na2[FeO4] influences the O&G levels. For the treatment using ferrate(VI) ion, the results showed that the best operating point is obtained when the temperature is 28 °C, pH 3, and a 2000 mg.L-1 solution of Na2[FeO4] is used. This experiment has achieved a final O&G level of 4.7 mg.L-1, which means 94% percentage removal efficiency of oils and greases. Comparing Fenton and photo-Fenton processes, it was observed that the Fenton reaction did not provide good reduction of O&G (around 20% only). On the other hand, a degradation of approximately 80.5% of oil and grease was obtained after a period of seven hours of treatment using photo-Fenton process, which indicates that the best process combination has occurred between the flotation and the photo-Fenton reaction using solar radiation, with an overall removal efficiency of O&G of approximately 89%
format article
author Chiavone Filho, Osvaldo
Mendonça, Erica T. R.
Araujo, Caroline Maria Bezerra de
Motta Sobrinho, Maurício A. da
author_facet Chiavone Filho, Osvaldo
Mendonça, Erica T. R.
Araujo, Caroline Maria Bezerra de
Motta Sobrinho, Maurício A. da
author_sort Chiavone Filho, Osvaldo
title Evaluation of produced water treatment using advanced oxidation processes and sodium ferrate(VI)
title_short Evaluation of produced water treatment using advanced oxidation processes and sodium ferrate(VI)
title_full Evaluation of produced water treatment using advanced oxidation processes and sodium ferrate(VI)
title_fullStr Evaluation of produced water treatment using advanced oxidation processes and sodium ferrate(VI)
title_full_unstemmed Evaluation of produced water treatment using advanced oxidation processes and sodium ferrate(VI)
title_sort evaluation of produced water treatment using advanced oxidation processes and sodium ferrate(vi)
publisher International Journal of Chemical, Materials and Biomolecular Science
publishDate 2021
url https://repositorio.ufrn.br/handle/123456789/44973
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AT araujocarolinemariabezerrade evaluationofproducedwatertreatmentusingadvancedoxidationprocessesandsodiumferratevi
AT mottasobrinhomauricioada evaluationofproducedwatertreatmentusingadvancedoxidationprocessesandsodiumferratevi
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