Fouling mitigation in produced water treatment by conjugation of advanced oxidation process and microfiltration

This work explored the use of ozonation and photoperoxidation before the microfiltration process to reduce fouling. Produced water was synthesized with salt, viscosifier, and surfactant. The additives influence on membrane fouling was evaluated. Photoperoxidation process led to an overall better per...

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Bibliographic Details
Published in:	Environmental science and pollution research international Vol. 28; no. 10; pp. 12803 - 12816
Main Authors:	Ferreira, Anna Danielli da Fonseca, Coelho, Déborah Regina Bispo, dos Santos, Rafael Victor Gomes, Nascimento, Kleby Soares, Presciliano, Fabricio de Andrade, da Silva, Felipe Pereira, Campos, Juacyara Carbonelli, da Fonseca, Fabiana Valéria, Borges, Cristiano Piacsek, Weschenfelder, Silvio Edegar
Format:	Journal Article
Language:	English
Published:	Berlin/Heidelberg Springer Berlin Heidelberg 01-03-2021 Springer Nature B.V
Subjects:	Additives Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution Chemical oxygen demand Conjugation Cross flow Earth and Environmental Science Ecotoxicology Efficiency Emulsions Environment Environmental Chemistry Environmental Health Environmental science Filtration Fouling Free radicals Hydrogen Peroxide Hydroxyl radicals Membrane processes Membrane separation Membranes Membranes, Artificial Microfiltration Oil Oil recovery Oil removal Oxidation Oxidation process Oxidation-Reduction Ozonation Pollutants Radiation Research Article Salts Surfactants Ultraviolet radiation Waste Water Technology Water Water Management Water Pollution Control Water Purification Water quality Water treatment Chemical additives Ceramic membrane Pretreatment Photoperoxidation Oil removal
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Summary:	This work explored the use of ozonation and photoperoxidation before the microfiltration process to reduce fouling. Produced water was synthesized with salt, viscosifier, and surfactant. The additives influence on membrane fouling was evaluated. Photoperoxidation process led to an overall better performance than ozonation in terms of oil removal and fouling reduction. The maximum oil removal efficiency was 86%, obtained for emulsions with salt after 2 h of treatment (COD: H 2 O 2 ratio 1:1, UV dose of 965 J/m 2 ). The inclusion of chemical additives impaired the oxidative power of hydroxyl radicals leading to a moderate oil removal; however, they were still able to reduce membrane fouling, mainly in oil/water emulsions with viscosifier. Higher salt concentration promoted fouling resistance and also benefited the permeate quality. Cross-flow microfiltration process integrated with photoperoxidation was able to improve the permeate flux from 84 to 182 L/m 2 .h after 3 h of exposure to UV radiation, resulting in a permeate with less than 10 mg/L of oil content. Graphical abstract
ISSN:	0944-1344 1614-7499
DOI:	10.1007/s11356-020-11265-2