Thiadiazole Derivative Impregnated on Cross-Linked Hydrogel for Water Retention and Adsorption of Nickel Ions for Sustainable Environment

Abstract

In this study, free radical copolymerization was used to prepare a hydrogel of poly (acrylic acid-co-2-amine -5-(3,5-dinitrophenyl)-1,3,4-thiadiazol) (poly-AA-ANT). The poly-AA-ANT hydrogel was characterizedusing Fourier transform infrared spectroscopy FTIR, Thermogravimetric analysis (TGA), and scanningelectron microscopy (SEM), X-ry diffraction. The swelling of poly-AA-ANT was performed by using twosolvents (water and methanol) each alone and found that the swelling ability in methanol was higher than forwater. The removal of Ni2+ was conducted by immersing the poly-AA-ANT in a solution of Ni2+ and after aperiol of time the residual we measured by atomic absorption spectrophotometer. The percentage of removalwas 93.8%. The poly-AA-ANT hydrogel had a high swelling ratio of 546%. penetration rate of the poly-AA-ANT hydrogel coupled with the high swelling rate exposed to the internal adsorption sites. The high-waterholding capacity of Poly-AA-ANT improved the moisture holding limit of soil for irrigation up to 24 days.systems as a result, Poly-AA-ANT has become an important addition to irrigation systems.