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

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

Authors

K.M. Seema

B.B. Mamba

James Njuguna

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.

Journal Article Type Article
Publication Date Apr 1, 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
Institution 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
DOI https://doi.org/10.1016/j.ijbiomac.2017.12.046
Keywords Nanocomposite; Adsorption; Aqueous waste; Isotherm; Kinetics

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