ADSORPTION OF LEAD IONS (PB2+) FROM AQUEOUS SOLUTION WITH TETRA-ETHYL ORTHOSILICATE MODIFIED SILICA-IRON OXIDE (SI-FE3O4) MAGNETIC NANO-ADSORBENT.

OLABIMTAN, O. H and Okibe, O. P and Adegboyo, O. O. and Aboki, M. A and Abubakar, Z. and Abdulkarim, Y. M and Ashade, N. O and Yahaya, Y. (2020) ADSORPTION OF LEAD IONS (PB2+) FROM AQUEOUS SOLUTION WITH TETRA-ETHYL ORTHOSILICATE MODIFIED SILICA-IRON OXIDE (SI-FE3O4) MAGNETIC NANO-ADSORBENT. IJCIRAS |, 2 (9). pp. 26-34. ISSN 2581-5334

Text IJCIRAS1520.pdf Download (553kB)

Abstract

Lead as one of the toxic and dangerous heavy metals will always require an approach that is cost-effective, simple and environmentally benign to eliminate it from potable water sources especially. Tetra-ethyl orthosilicate was employed as a stabilizing and modifying agent on iron oxide magnetic nano-adsorbent from ferric and ferrous chlorides as precursors. Fourier transform infrared (FT-IR) and Transmission electron microscopy (TEM) was adopted in the characterization of this silica-coated magnetic iron oxide nano-adsorbent (Si-Fe3O4 Nanoparticles). FTIR clearly ascertained the relevant absorption peaks and affirmation of spheroidal Si-Fe3O4 nano-adsorbent at a 20nm nanometer scale with TEM and image J particle analysis software. The actual dimension of 82.54nm or 68.56nm was deduced from the absolute average area of (5756.144 ± 1055.833) nm2; standard error of 333.884nm2 with the silica-coated magnetic nano-adsorbent (Si-Fe3O4) and (77.5 ± 9.24) nm2 and standard error of 2.922nm2 with the uncoated nanoparticles (Fe3O4) were estimated. They (Si-Fe3O4 and Fe3O4) retained polydispersity indices of 2504.800 and 67.811 respectively, characterizing the nano-adsorbent as a polydispersed, randomly oriented nanoparticles. Si-Fe3O4 as a nano-adsorbent was then employed for the adsorption of lead (Pb2+) ions from the aqueous solution of 0.06M and 20mg of lead nitrate [Pb(NO3)2] under the influence of an external magnetic field. Qualitative determination of lead with a test kit was adopted as a direct signal in detecting the presence and absence of lead ions in aqueous solution. It was logically estimated that 20mg/g adsorption capacity of 5g and 100% removal efficiency of Si-Fe3O4 nano-adsorbent were achieved with lead ion.

Item Type:	Article
Subjects:	Q Science > Q Science (General) Q Science > QD Chemistry
Divisions:	Faculty of Engineering, Science and Mathematics > School of Chemistry
Depositing User:	Mr. Bolanle Yisau I.
Date Deposited:	29 May 2021 21:05
Last Modified:	29 May 2021 21:05
URI:	http://eprints.federalpolyilaro.edu.ng/id/eprint/1511

Actions (login required)

View Item