Removal of lead (II) from aqeouos waste using (CD-PCL-TiO2) bio-nanocomposites.

Seema, K.M.; Mamba, B.B.; Njuguna, J.; Bakhtizin, R.Z.; Mishra, A.K.

doi:10.1016/j.ijbiomac.2017.12.046

Removal of lead (II) from aqeouos waste using (CD-PCL-TiO2) bio-nanocomposites.

Seema, K.M.; Mamba, B.B.; Njuguna, J.; Bakhtizin, R.Z.; Mishra, A.K.

Authors

K.M. Seema

B.B. Mamba

Professor James Njuguna j.njuguna@rgu.ac.uk
NSC Director of Research and Innovation

R.Z. Bakhtizin

A.K. Mishra

Abstract

Lead (Pb) pollution is our water system is a major concern, as this metal is toxic even at low concentration. This study aim to fabricate a bio-nanocomposite (cyclodextrin-polycaprolactone titanium dioxide) that will be used as an adsorbent for the removal of lead in aqueous waste. In this study, titanium dioxide was synthesized via sol-gel technique then incorporated in a polymer blend (CD-PCL) via solution blending method. The resulting bio-nanocomposites were characterized using Scanning Electron Microscopy (SEM), transmission electron microscope (TEM) and Brunauer Emmett and Teller (BET). The effect of how factors such as pH, concentration and adsorbent dose affect the removal efficiency of the bio-nanocomposites were studies. Maximum adsorption of lead obtained was 98% at pH 9.7, 10 ppm with 0.005 g dosage. Kinetic studies and adsorption isotherms were also investigated. The adsorption data fit Langmuir isotherm. Pb (II) obeyed pseudo-second order kinetics.

Citation

SEEMA, K.M., MAMBA, B.B., NJUGUNA, J., BAKHTIZIN, R.Z. and MISHRA, A.K. 2018. Removal of lead (II) from aqeouos waste using (CD-PCL-TiO2) bio-nanocomposites. International journal of biological macromolecules [online], 109, pages 136-142. Available from: https://doi.org/10.1016/j.ijbiomac.2017.12.046

Journal Article Type	Article
Acceptance Date	Dec 6, 2017
Online Publication Date	Dec 9, 2017
Publication Date	Apr 1, 2018
Deposit Date	Jan 8, 2018
Publicly Available Date	Dec 10, 2018
Journal	International journal of biological macromolecules
Print ISSN	0141-8130
Electronic ISSN	1879-0003
Publisher	Elsevier
Peer Reviewed	Peer Reviewed
Volume	109
Pages	136-142
DOI	https://doi.org/10.1016/j.ijbiomac.2017.12.046
Keywords	Nanocomposite; Adsorption; Aqueous waste; Isotherm; Kinetics
Public URL	http://hdl.handle.net/10059/2646
Contract Date	Jan 8, 2018