From Hazardous Chrysotile and Polyamide Wastes into Sustainable Serpentine/Polyamide Nanocomposite Membrane: Fabrication, Characterization, and Environmental Application

Abstract

Sustainable serpentine/polyamide nanocomposite (SP/PAM) was fabricated using malicious mining (serpentine chrysotile, SP Ctl) and industrial (polyamide, PA6) wastes via the electro-spinning technique. Before fabrication, the fibrous nature of Ctl was demolished through intensive grinding into nano-fractions. The successful impregnation of Ctl within PA6 via the electro-spinning technique at fixed ratios of precursor raw materials in the dissolving agent (7.5/92.5% SP/PA wt/wt solid/solid) created an internal network structure within the polymer fibers by molecular self-assembly. SP/PAM showcased its prowess in tackling the remediation of diverse dyes and Fe(III) from synthetic solutions in a batch system. Based on correlation coefficient outcomes (R2 ≈ 0.999), the pseudo-second-order equation justified the sorption data in an adequate way for all contaminants. In addition, intra-particle diffusion was not the only driving factor in the sorption process. Similarly, the Langmuir equation with maximum removal capacity (qmax) 5.97, 4.33, and 5.36 mg/g for MO, MB, and Fe(Ⅲ), respectively, defined the sorption data better than Freundlich.

Efficient dye removal from industrial wastewater using sustainable activated carbon and its polyamide nanocomposite derived from agricultural and industrial wastes in column systems

“…Precipitation, coagulation, ltration, ion exchange, advanced oxidation, bioremediation, and activated sludge mechanisms represent some of the physical, chemical, and biological technologies used for dye removal from wastewater. [6][7][8][9] Comparing adsorption with other techniques, it is important to consider their specic strengths and limitations. For instance, chemical oxidation can be highly effective in removing certain organic pollutants using strong oxidizing agents.…”

“…Recently, there has been a global trend towards the valorization of unexploited materials and waste as a means to address the issue of environmental pollution. 7,22,[26][27][28][29][30][31][32] One such approach is the valorization of some agricultural wastes such as sugar beet to produce AC. 33,34 Sugar beet is one of the most important sugar-producing plants worldwide, as the root contains a lot of sucrose.…”