Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/148825
Title: Taguchi optimization design of diameter-controlled synthesis of multi walled carbon nanotubes for the adsorption of Pb(II) and Ni(II) from chemical industry wastewater
Authors: Egbosiuba, Titus Chinedu
Abdulkareem, Ambali Saka
Tijani, Jimoh Oladejo
Ani, Jacinta Ijeoma
Krikstolaityte, Vida
Srinivasan, Madhavi
Veksha, Andrei
Lisak, Grzegorz
Keywords: Engineering::Materials
Engineering::Chemical engineering
Issue Date: 2021
Source: Egbosiuba, T. C., Abdulkareem, A. S., Tijani, J. O., Ani, J. I., Krikstolaityte, V., Srinivasan, M., Veksha, A. & Lisak, G. (2021). Taguchi optimization design of diameter-controlled synthesis of multi walled carbon nanotubes for the adsorption of Pb(II) and Ni(II) from chemical industry wastewater. Chemosphere, 266, 128937-. https://dx.doi.org/10.1016/j.chemosphere.2020.128937
Project: SCARCE USS-IF-2018-4 
Journal: Chemosphere 
Abstract: Herein, Taguchi L9 orthogonal array was used for the first time to optimize synthesis of diameter-controlled multi walled carbon nanotubes (MWCNTs). The nanoadsorbents, MWCNTs5-15 nm and MWCNTs16-25 nm were applied for Pb(II) and Ni(II) ion removal from paint, battery and electroplating wastewater. The results indicated successful synthesis of MWCNTs with diameter distribution ranges of 5-15 nm and 16-25 nm. The synthetized smaller diameter MWCNTs5-15 nm revealed higher Brunauer-Emett-Teller (BET) surface area of 1306 ± 5 m2/g compared to larger diameter MWCNTs16-25 nmwith the surface area of 1245 ± 4 m2/g. They demonstrated excellent adsorption of Pb(II) and Ni(II) ions within the permissible concentration proposed by WHO at pH, contact time, adsorbent dosage and temperature of 5, 60 min, 30 mg/L and 50 °C, respectively. Particularly, MWCNTs5-15 nm possessed high adsorption capacity of 215.38 ± 0.03 mg/g for Pb(II) and 230.78 ± 0.01 mg/g for Ni(II). Again, the maximum adsorption capacity of 201.35 ± 0.02 and 206.40 ± 0.02 mg/g was achieved for Pb(II) and Ni(II) using MWCNTs16-25 nm. All in all, the adsorption capacity of the nanoadsorbents at the investigated diameter range showed higher efficiency compared to other materials for heavy metals elimination from chemical industrial wastewater.
URI: https://hdl.handle.net/10356/148825
ISSN: 0045-6535
DOI: 10.1016/j.chemosphere.2020.128937
Rights: © 2020 Elsevier Ltd. All rights reserved. This paper was published in Chemosphere and is made available with permission of Elsevier Ltd.
Fulltext Permission: embargo_20230331
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles

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