Synthesis of green polymer conductive hybridadsorbents for recycling of textile wastewater: batch and column studies

Industrial wastewater emitted from textile industry is the chief cause of water pollution comprising a huge amount of dyes. The purpose of the present researchis optimization of adsorptive removal of pink-XFG dye in batch and column mode using novel green polymeric conductive hybrid materials. Successful synthesis of materials and thermal stability was confirmed via FTIR, SEM, and TGA–DSC. The maximum adsorption capacity for ES (19.6 mg/g), ES-ZnO-PTh (27.7 mg/g), ES-ZnO-PAN (35.4 mg/g), and ES-ZnO-PPY (39.8 mg/g) was attained in batch mode and a highest adsorption potential for ES-ZnO-PPY (15.5 mg/g) was obtained in column mode under optimum conditions. Desorption and recycling study showed successful reusability of the material up to five cycles. The sorption mechanism was explored via equilibrium and kinetic modeling showing better fitness of Langmuir sorption isotherm and pseudo-second-order kinetics. Thermodynamic modeling pointed out exothermic nature of the sorption process. Hence, the consequences put forwarded the green hybrid materials to be cheap, more efficient, and stable adsorbents to obtain highest dye removal. Graphical Abstract