Design and synthesis of a new coordination polymer of zinc (II): Crystal structure and evaluation for its adsorption studies in removing perilous organic dye pollutants in aqueous medium

Treated Kaolin Clay Incorporated with Nickel Nanoparticles for Enhanced Removal of Crystal Violet and Methyl Orange from Textile Wastewater

“…A pH, point of zero charge (pH PZC ) analysis was performed to evaluate the surface charge of the adsorbent (TKC-Ni 0 NPs) concerning dye adsorption. Adsorption is primarily a surface-related process, and thus, the pH of the solution can impact the surface charge of both the adsorbent and the adsorbate . The determination of the pH PZC for TKC-Ni 0 NPs involved measuring zeta potential values across a pH range of 2 to 8.…”

“…The impact of the initial dye concentration on the adsorption capacity of both CV and MO dyes was evident. Higher initial dye concentrations resulted in increased adsorption capacities, as more dye molecules were present near each unit mass of adsorbent, facilitating a faster adsorption rate . Conversely, lower initial dye concentrations led to fewer dye molecules surrounding each unit mass of adsorbent, resulting in the adsorption of a smaller number of dye molecules .…”

“…Additionally, the effect of coexisting ions such as Na + , Mg 2+ , Cl − , SO 4 2− , and CO 3 2− was determined at an initial concentration of CV and MO solution (100 mg/L), contact time (60 min), adsorbent dosage (25 mg/L), temperature (50 °C), and pH (CV (6) and MO(4)). Above all, the experiments were repeated three times and the average values were reported.…”

“…For instance, it is estimated that 1 ton of textile products consumes approximately 21–377 m 3 of water and around 10–15% of dye is lost in the effluent during the dyeing process . Industries like paper, paints, textiles, and tanneries are major consumers of dyes and discharge large volumes of wastewater into the environment . Among these widely used synthetic dyes, crystal violet, also known as gentian violet, is used extensively as an antiseptic in medical facilities, while methyl orange is used as a coloring agent and indicator in different industries.…”

“…5 Industries like paper, paints, textiles, and tanneries are major consumers of dyes and discharge large volumes of wastewater into the environment. 6 Among these widely used synthetic dyes, crystal violet, also known as gentian violet, is used extensively as an antiseptic in medical facilities, while methyl orange is used as a coloring agent and indicator in different industries. In humans, contact with elevated levels or prolonged interaction with lower concentrations of crystal violet can result in eye discomfort, allergic responses, and skin irritation.…”