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Updated: Feb 13, 2026

Preparation of Free-Surface Hyperbolic Water Vortices
Published on: July 28, 2023
Preparation of bio-based magnetic adsorbent and application for efficient removal of Cd(II) from water
Jianjun Zhou1, Xionghui Ji2, Xiaohui Zhou1
1Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources (College of Chemistry and Chemical Engineering), Central South University, Changsha 410083, China
Abstract:
A novel magnetic bio-adsorbent (MCIA) was developed, characterized and tested for its Cd(II) removal from aqueous solution. MCIA could be easily separated from the solution after equilibrium adsorption due to its super-paramagnetic property. The functional and magnetic bio-material was an attractive adsorbent for the removal of Cd(II) from aqueous solution owing to the abundant adsorption sites, amino-group and oxygen-containing groups on the surface of Cyclosorus interruptus. The experimental results indicated that the MCIA exhibited excellent adsorption ability and the adsorption process was spontaneous and endothermic. The adsorption isotherm was consistent with the Langmuir model. The adsorption kinetic fitted the pseudo-second-order model very well. The maximum adsorption capacity of Cd(II) onto MCIA was 40.8, 49.4, 54.6 and 56.6 mg/g at 293, 303, 313 and 323 K, respectively. And the MCIA exhibited an excellent reusability and impressive regeneration. Therefore, MCIA could serve as a sustainable, efficient and low-cost magnetic adsorbent for Cd(II) removal from aqueous solution.
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