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

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, ti...

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Bibliographic Details
Published in:International journal of biological macromolecules 2018-04, Vol.109, p.136-142
Main Authors: Seema, K.M., Mamba, B.B., Njuguna, J., Bakhtizin, R.Z., Mishra, A.K.
Format: Article
Language:English
Subjects:
Adsorption
Aqueous waste
Isotherm
Kinetics
Nanocomposite
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Summary: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.
ISSN:0141-8130
1879-0003
DOI:10.1016/j.ijbiomac.2017.12.046