Improving antifouling property of alumina microfiltration membranes by using atomic layer deposition technique for produced water treatment


Mahmodi G., Ronte A., Dangwal S., Wagle P., Echeverria E., Sengupta B., ...More

DESALINATION, vol.523, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 523
  • Publication Date: 2022
  • Doi Number: 10.1016/j.desal.2021.115400
  • Journal Name: DESALINATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, PASCAL, Aerospace Database, Aqualine, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Chemical Abstracts Core, Communication Abstracts, Environment Index, Food Science & Technology Abstracts, INSPEC, Metadex, Pollution Abstracts, Public Affairs Index, Veterinary Science Database, Civil Engineering Abstracts
  • Keywords: Produced water, Membrane filtration, Atomic layer deposition, Hydrophilicity, SURFACE MODIFICATION, ULTRAFILTRATION MEMBRANES, NANOFILTRATION MEMBRANES, HYDROPHILIC MODIFICATION, WASTE, OIL, ADSORPTION, REMOVAL, PERFORMANCE, PERVAPORATION
  • Istanbul Technical University Affiliated: Yes

Abstract

Drinking water supply sustainability is one of the biggest challenge of the century, necessitating efficient and economical technologies for water purification. ZnO atomic layer deposition (ALD) modified membranes were developed for treating produced water from wells in Oklahoma, as a model of produced water, having very high salt and oil content. ZnO ALD membranes increased hydrophilicity with an oil contact angle increasing from 165 degrees for an alpha-alumina support to 171 degrees for a ZnO ALD membrane (120 cycles), which induced a dramatic rise in the pure water flux from 148 to 192 L m(-2) h(-1). ZnO ALD on the membranes enhanced Total Organic Carbon (TOC) rejection from 96% to 99% and decreased Total Dissolved Solids (TDS) content from 53,205 ppm to 10 ppm. It was found that the average roughness (S-a) was 509 nm for the pristine alpha-alumina support and was reduced to 332 nm for the ZnO ALD membrane (120 cycles). Additionally, the anti-fouling property of membranes with flux recovery ratio increased from 93% to 99%. Overall, the ZnO ALD membrane showed great potential to purify produced water.