Journal
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
Volume 28, Issue 10, Pages 12803-12816Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-020-11265-2
Keywords
Photoperoxidation; Chemical additives; Pretreatment; Oil removal; Ceramic membrane
Categories
Funding
- Petroleo Brasileiro S/A (PETROBRAS)
- Universidade Federal Do Rio De Janeiro (UFRJ) [Petrobras/UFRJ: 2014/00155-7]
Ask authors/readers for more resources
The study found that photoperoxidation treatment before microfiltration can effectively increase oil removal efficiency and reduce membrane fouling, especially in oil/water emulsions with viscosifier. Additionally, higher salt concentration can promote fouling resistance and improve permeate quality.
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: H2O2 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available