Pre and post-adsorption properties of modified banana fibre as sustainable bio-material for environmental and futuristic industrial applications

Abstract

The conversion of waste into value added products is the way of agro-waste management. Herein, banana pseudo stem fibre was modified by partial bleaching to sustain its strength and aesthetic properties. The obtained fibres employed for the removal of Reactive Red 195 from an aqueous solution followed by its sustainable application for futuristic spinnable yarn and composite material for industrial applications. The raw banana fibre (RBF), modified banana fibre (MBF) and banana fibre remaining after dye adsorption (BFADA) were all characterised to determine their morphology, structural functionality, tensile strength, and microbial load. The modified banana fibre adsorbs 23.57 mg g−1 of Reactive Red 195 dye at pH 2 in 60 min. It was able to remove 61% of residual Reactive Red 195 dye from the water remaining after cotton dyeing. The fibre after adsorption demonstrated remarkable durability against both dry and wet rubbing. Additionally, it showcased exceptional efficacy in combating both gram-positive and gram-negative microbial burdens. The BFADA sample is reused in the form of composite material for futuristic industrial applications by characterizing its property in terms of strength. The current approach proposes MBF as a low-cost bio material for the removal of dyes from textile effluent and its reuse in the other value added products with improved textile and fractural strength.