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- Title
Ecofriendly Bio-Polymeric-Metal Oxide Template (CA/ZrO<sub>2</sub>) for the Effective Removal of As(III), As(V), and ROX from Contaminated Water.
- Authors
Maheswari, B. Uma; Sivakumar, V. M.; Thirumarimurugan, M.
- Abstract
The application of newly synthesized CA/ZrO2 nanocomposite as a sorbent for the effective removal of As(III), As(V), and ROX contaminants from aqueous solution has been investigated. The synthesized nanocomposite was analyzed by scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) analysis, and X-ray diffractometer (XRD) to determine its applicability for the contaminant's removal. SEM images show the particles are unevenly decorated, with an average particle size of 100 nm. BET analysis reveals that the synthesized CA/ZrO2 has a specific surface area of 208.64 m2/g. The adsorption capacity of CA/ZrO2 was evaluated in batch mode for pollutants such as As(III), As(V), and ROX based on variation in pH, metal ion concentration, and contact time, respectively. The maximum removal efficiency was found to be 89% for As(III), 95.3% for As(V), and 97% for ROX. Similarly, equilibrium data fits well with Langmuir model having maximum monolayer adsorption capacity of 180, 129, and 118 mg/g, respectively. Based on kinetic studies, pseudo-second-order model finds highest suitability with the process. Thermodynamic studies reveal the endothermic nature of adsorption process. The prepared CA/ZrO2 showed good regenerative capacity (four cycles), making it a suitable adsorbent for arsenic contaminant removal.
- Subjects
ARSENIC removal (Water purification); WATER pollution; LEAD removal (Water purification); FOURIER transform infrared spectroscopy; ADSORPTION capacity; SCANNING electron microscopy; X-ray diffraction
- Publication
Water, Air & Soil Pollution, 2023, Vol 234, Issue 3, p1
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-023-06208-9