Removal of Cadmium from Aqueous Solutions using Nickel Hydroxide/Reduced Graphene Oxide Composite: Response Surface Methodology Optimization and Nonlinear Isotherm Modeling

Journal of the Turkish Chemical Society Section B Chemical Engineering, Journal Year: 2025, Volume and Issue: 8(1), P. 29 - 40

Published: Feb. 7, 2025

Removal of Cd(II) ions from aqueous solutions was investigated using a nickel hydroxide/reduced graphene oxide composite as the adsorbent material. Influential parameters batch adsorption process were optimized Box-Behnken design, which enabled systematic evaluation effects various factors. An analysis variance performed to develop quadratic regression model for predicting percentage removal. The optimal conditions achieving maximum removal efficiency identified an dosage 60 mg, pH 8.0, and mixing period 40 minutes. Isotherm conducted nonlinear regression, with sum squared errors serving error function. results indicated that Langmuir provided better fit experimental data compared Freundlich model, evidenced by higher determination coefficients (0.9684) lower values. This suggested is characterized monolayer mechanism on homogeneous surface. capacity found be 218 mg/g, indicating effectiveness in removing solution.

Language: Английский

Synthesis of an original Bi12CoO20/ZnO nanocomposites for lead adsorption

Materials Science and Engineering B, Journal Year: 2025, Volume and Issue: 319, P. 118345 - 118345

Published: April 24, 2025

Language: Английский