About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
Nanotechnology for Energy, Environment, Healthcare and Industry
|
| Presentation Title |
Synthesis, Physicochemical Characterization and Adsorptive Performance of Coir-Hydrated Silica Nanoparticles (CHSNPs) for Crude Oil Remediation |
| Author(s) |
Joshua Osaretin Onaifo, Esther Uwidia Ikhuoria, Godfrey Osatohanmwen Otabor, Hillary Ifijen , Philip Edogun |
| On-Site Speaker (Planned) |
Joshua Osaretin Onaifo |
| Abstract Scope |
Crude oil contamination in soil is a major environmental challenge in oil-producing communities. This study reports the green synthesis of coir-hydrated silica nanoparticles (CHSNPs) for the remediation of petroleum hydrocarbon-contaminated soil. The CHSNPs were analyzed using FT-IR, X-ray diffraction and GC-MS. FT-IR and XRD results confirmed abundant silanol and oxygenated groups, and a semi-polycrystalline structure with heterogeneous active sites. GC-MS analysis showed that the nanoparticles contain Si-O-Si linkages and aromatic moities, contributing to adsorption through hydrophobic and van der Waals interaction for C16 - C26 hydrocarbons. Adsorption data fitted well to Langmuir, Freundlich and Temkin isotherms, indicating favourable adsorption. Kinetic studies revealed that adsorption follows basically pseudo-second-order kinetics, indicating strong adsorbent and surface interaction, with minor intraparticle diffusion effect. The adsorption process was spontaneous, exothermic, and the CHSNPs maintained high efficiency after multiple regeneration cycles. Therefore, CHSNPs are cost effective and sustainable green nanocomposite for hydrocarbon remediation. |