Facile synthesis of highly macroporous Gum Arabic hydrophilic cryogel for dyes adsorption

Porous materials are promising candidates for the removal of organic pollutants from di®erent water bodies. Among porous materials, cryogels are more attractive candidates due to their macro-porosity and rapid adsorption. This work evaluated the fabrication and adsorption capability of macro-porous Gum Arabic-based Cryogel. The fabricated Gum Arabic cryogel was modified and protonated to the protonated modified Gum Arabic Cryogel to compare its adsorption capacities for three di®erent dyes. The successful fabrication of cryogel was confirmed by Fourier Transform Infrared spectroscopy, Di®erential Scanning Calorimetry, Thermal gravimetric analysis and Scanning Electron Microscopy. The protonated modified Gum Arabic Cryogel showed enhanced adsorption capability towards subjected dyes by following second-order rate kinetics. These cryogels can be employed as an e±cient adsorbent to remove toxic contaminants from wastewater e®luents.