Bisphenol A Removal Using Visible Light Driven Cu2O/PVDF Photocatalytic Dual Layer Hollow Fiber Membrane

Bisphenol A (BPA) is amongst the endocrine disrupting compounds (EDCs) that cause illness to humans and in this work was removed using copper (I) oxide (Cu2O) visible light photocatalyst which has a narrow bandgap of 2.2 eV. This was done by embedding Cu2O into polyvinylidene fluoride (PVDF) membran...

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Published in:Membranes (Basel) 2022-02, Vol.12 (2), p.208
Main Authors: Mohamed Noor, Siti Hawa, Othman, Mohd Hafiz Dzarfan, Khongnakorn, Watsa, Sinsamphanh, Oulavanh, Abdullah, Huda, Puteh, Mohd Hafiz, Kurniawan, Tonni Agustiono, Zakria, Hazirah Syahirah, El-badawy, Tijjani, Ismail, Ahmad Fauzi, Rahman, Mukhlis A., Jaafar, Juhana
Format: Article
Language:English
Subjects:
Bisphenol A
Breakdowns
Coextrusion
Copper
Copper oxides
Embedding
Endocrine disruptors
Ethanol
Extrusion
Flow rates
Fluorides
Hollow fiber membranes
Irradiation
Leaching
Light
Light irradiation
Membranes
Mineral water
Particle size
Photocatalysis
photocatalytic activity
Polyethylene glycol
Polymers
Polyvinylidene fluorides
Porosity
Radiation
visible light photocatalytic dual layer hollow fiber membrane
Water analysis
Water sampling
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Summary:Bisphenol A (BPA) is amongst the endocrine disrupting compounds (EDCs) that cause illness to humans and in this work was removed using copper (I) oxide (Cu2O) visible light photocatalyst which has a narrow bandgap of 2.2 eV. This was done by embedding Cu2O into polyvinylidene fluoride (PVDF) membranes to generate a Cu2O/PVDF dual layer hollow fiber (DLHF) membrane using a co-extrusion technique. The initial ratio of 0.25 Cu2O/PVDF was used to study variation of the outer dope extrusion flowrate for 3 mL/min, 6 mL/min and 9 mL/min. Subsequently, the best flowrate was used to vary Cu2O/PVDF for 0.25, 0.50 and 0.75 with fixed outer dope extrusion flowrate. Under visible light irradiation, 10 mg/L of BPA was used to assess the membranes performance. The results show that the outer and inner layers of the membrane have finger-like structures, whereas the intermediate section of the membrane has a sponge-like structure. With high porosity up to 63.13%, the membrane is hydrophilic and exhibited high flux up to 13,891 L/m2h. The optimum photocatalytic membrane configuration is 0.50 Cu2O/PVDF DLHF membrane with 6 mL/min outer dope flowrate, which was able to remove 75% of 10 ppm BPA under visible light irradiation without copper leaching into the water sample.
ISSN:2077-0375
2077-0375
DOI:10.3390/membranes12020208