Fabrication of reusable 3D hierarchically porous air filtration based on multifunctional nanoclay-embedded cellulose electrospun nanofiber.

A special nano-filter made of cellulose acetate (CA) was developed, including a 3D hierarchically porous structure. The nano-filter utilized nano-clay (hydrophilic bentonite (NC)), comprising 0.5-1.5 % of its weight. The objective of this study was to evaluate the adsorption properties of four carcinogenic polyaromatic hydrocarbons (benz[α] anthracene (BαA), chrysene (CHR), benzo[β]fluoranthene (BβF), and benzo[α] pyrene (BαP)) during the rice smoking process. The evaluation of the nano-filter encompassed an analysis of its mechanical attributes, surface qualities, morphology, and adsorption efficacy. The experimental results demonstrated that adding NC to the nano-filter composition of CA led to substantial improvements in tensile strength, elongation at break, and maximum load stress values compared to the control group. The nano-filter displayed a uniform and homogeneously distributed arrangement of nanoparticles. The GC-MS analysis demonstrated that the enhanced nano-filter, comprising nano-clay particles, successfully absorbed the polycyclic aromatic hydrocarbons (PAHs) over a 21-day rice smoking period. The performance, removal efficiency and porosity during repetitive filtering and cleaning cycles in the rice samples at different smoking times were approved reusability of CA-NC filter. It is recommended to explore the application of hybrid CA nano-filter s, namely those containing NC, as a cutting-edge filtration technique for smoked food products.