Status : Verified
| Personal Name | Capangpangan, April Anne R. |
|---|---|
| Resource Title | Surface modification of Polydopamine-Prussian Blue-Kapok Fiber for Adsorption of 60Co in Simulated Wastewater |
| Date Issued | 8 June 2026 |
| Abstract | 60Cobalt (60Co) is a radioactive isotope of cobalt that is a byproduct of nuclear fission in nuclear reactors. It settles in freshwater and terrestrial environments that could cause genetic mutation, low food production, potential plant mortality, and radiological toxicity to public health. This study investigates the removal of cobalt ions (Co²⁺ ) from aqueous solution using a polydopamine-prussian blue-modified kapok fiber (PPBKF). The PPBKF was synthesized with varying PDA concentrations (0g/l, 1g/L, 2g/L) and PB concentrations (15mM,17 mM, 20 mM) via surface modification. The PPBKF adsorbents was characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and water contact angle measurement. Results show the successful deposition of PDA and PB as well as a significant improvement in surface wettability. A removal efficiency of 90% of Co²⁺ using PPBKF was achieved at 480 min, pH 7 and 25 °C. The adsorption process is well-described by the Langmuir isotherm model (R² = 0.984) that indicates a monolayer adsorption on a homogeneous surface. Kinetic studies revealed that the adsorption followed a pseudo-second-order model with a high R² = 0.9994. Furthermore, thermodynamic parameters (ΔG°, ΔH°, ΔS°) demonstrated that the cobalt adsorption onto PPBKF is a spontaneous and exothermic process accompanied by a decrease in entropy. These findings highlight the PPBKF as a sustainable and alternative material for effectively removing Co²⁺ ions from aqueous solutions, emphasizing its potential application in environmental remediation and water treatment technologies. |
| Degree Course | Masters of Science in Environmental Engineering |
| Language | English |
| Keyword | Kapok Fiber; Polydopamine; Adsorption; Prussian Blue |
| Material Type | Thesis/Dissertation |
Preliminary Pages
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Category : F - Regular work, i.e., it has no patentable invention or creation, the author does not wish for personal publication, there is no confidential information.
Access Permission : Open Access