Surface-Engineered Polyethersulfone Membranes Using Thermo-Responsive Poly(N-Isopropyl Acrylamide) with Antibiofouling Properties for Water Treatment Applications

Ghasemi, Homa; Abu-Zahra, Nidal; Baig, Umair; Waheed, Abdul; Aljundi, Isam H.

doi:10.1007/s10924-023-03175-4

Cited by 1 publication

(1 citation statement)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among different wastewater treatment technologies, membrane-based separations have emerged as promising technologies for treating complex and challenging oily wastewater emulsions. − Membrane-based separations are highly advantageous due to several salient features, including ease of operation, scalability, small space and environmental footprint, energy efficiency, and easy cleaning protocols. One of the significant features of membranes is the ease of tuning the chemistry of their active layers, which eventually alters the physical and chemical attributes of the membranes, which are reflected by a varied performance of the membranes during O/W separation.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Tailored Membranes with Special Surface Wettability Features for Highly Efficient Crude Oil-in-Water Emulsion Separation

Baig,

Waheed,

Usman

et al. 2024

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

Treating oily wastewater streams such as produced water has a huge potential to resolve the issue of wastewater disposal and generate useful water for reuse. Among different techniques employed for oily wastewater (oil-inwater; O/W emulsion) treatment, membrane-based separation is advantageous owing to its lower energy consumption, recycling, ease of operation, and wider scope of tuning the active layer chemistry for enhanced performance. In line with the possibilities of enhancing the performance of the membranes for efficient O/ W emulsion separation, the current work is designed to yield five different variants of polyaniline (PANI) active layers with special surface wettability features (superhyrophilic and underwater superoleophobic) on a ceramic alumina support. To achieve variants of PANI on ceramic alumina supports, emulsion polymerization was carried out, and different concentrations of initiator ammonium persulfate (APS) were applied to lead to PANI-A@Aluminum Oxide membrane, PANI-B@Aluminum Oxide membrane, PANI-C@Aluminum Oxide membrane, PANI-D@Aluminum Oxide membrane, and PANI-E@Aluminum Oxide membrane corresponding to 0.15, 0.25, 0.35, 0.5, and 1.0 M concentrations of initiator. The variation in initiator concentration resulted in different PANI growth patterns; hence, the resultant membranes showed different structural, physical, and performance features. Different characterization techniques including 1 H NMR, SEM, FE-TEM, AFM, water contact angle, XRD, EDX, and ATR-FTIR confirmed a more uniform and continuous growth of PANI (PANI-B) using a 0.25 M initiator concentration. The resultant PANI-B@Aluminum Oxide membrane showed an excellent surfactant stabilized crude O/W emulsion separation reaching >99% with a permeate flux of 2154 L m −2 h −1 (LMH) at 4 bar using a 100 ppm surfactant stabilized crude oil-in-water emulsion. The fouling and cleaning cycles revealed that the membrane can be reused with a 70% recovery of the initial permeate flux.

show abstract