Abstract
An adsorption process is a familiar approach to the dye decontamination of polluted wastewater. Ecological and low-cost fabrication of a highly efficient adsorbent has been a typical predicament. Herein, we reported a microwave-assisted preparation of a waste-based three-dimensional fibrous material with reliable mechanical stability, efficient adsorbing characteristics, and excellent dye decontamination performance. The material was prepared by reinforcing the milled waste cardboard fibers using chitosan to establish dual-pore scaffolds composed of interconnected lamellar channels and random pores. The adsorbent demonstrated exceptional removal capacity for the dye solution which fitted well with the isotherm model of Langmuir and the thermodynamic analysis of the adsorption process verified the prominent physisorption process. The maximum removal efficiency of the obtained samples for 25 ppm dye solution was up to 99% at a maximum adsorption capacity of 53.87 mg g−1. It is also worth mentioning that m(CF/Ch-2)7 has consistent removal performance over multiple cycles of regeneration. These results featured to be a promising material for utilizing solid waste materials to address one major type of water pollution.
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