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.

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