Dataset for: Nanohydrometallurgical Extraction and Electrowinning of Copper and Cobalt by Polydopamine-DTPA-Functionalized Superparamagnetic Nanoparticles

This dataset contains the experimental data supporting the findings reported in the manuscript "Nanohydrometallurgical Extraction and Electrowinning of Copper and Cobalt by Polydopamine-DTPA-Functionalized Superparamagnetic Nanoparticles". The data were obtained from batch adsorption experiments using MagNPs@PDA@DTPA nanoparticles as adsorbents for Cu²⁺ and Co²⁺ ions in aqueous solution. Data description: The dataset is organized into four main categories: Adsorption isotherms: Equilibrium adsorption capacity (qe, mg g⁻¹) as a function of equilibrium concentration (Ce, mmol L⁻¹) for Cu²⁺ and Co²⁺ on MagNPs@PDA and MagNPs@PDA@DTPA. Data were obtained at pH ≈ 6 with 24 h contact time, using initial metal concentrations ranging from 10 to 500 mmol L⁻¹. All measurements were performed in triplicate. Competitive adsorption selectivity: Binary adsorption data for Cu²⁺ and Co²⁺ at equimolar initial concentrations (125 mmol L⁻¹ each), showing preferential uptake of Cu²⁺ (76.35%) over Co²⁺ (23.65%). Data include triplicate measurements with standard deviations. pH-controlled desorption: Desorption efficiency of Cu²⁺ and Co²⁺ from metal-loaded MagNPs@PDA@DTPA at pH values ranging from 2 to 9, demonstrating selective elution behavior. Regeneration cycling: Adsorption capacity of MagNPs@PDA@DTPA over four consecutive adsorption-desorption cycles for both Cu²⁺ and Co²⁺, including capacity retention percentages for each cycle.