Zia, Q, Tabassum, M, Lu, Z et al. (6 more authors) (2020) Porous poly(L–lactic acid)/chitosan nanofibres for copper ion adsorption. Carbohydrate Polymers, 227. 115343. ISSN 0144-8617
Abstract
Porous poly(L-lactic acid) (PLLA) nanofibrous membrane with the high surface area was developed by electrospinning and post acetone treatment and used as a substrate for deposition of chitosan. Chitosan was coated onto porous nanofibrous membrane via direct immersion coating method. The porous PLLA/chitosan structure provided chitosan a high surface framework to fully and effectively adsorb heavy metal ions from water and showed higher and faster ion adsorption. The composite membrane was used to eliminate copper ions from aqueous solutions. Chitosan acts as an adsorbent due to the presence of aminic and hydroxide groups which are operating sites for the capture of copper ions. The maximum adsorption capacity of copper ions reached 111.66 ± 3.22 mg/g at pH (7), interaction time (10 min) and temperature (25 °C). The adsorption kinetics of copper ions was established and was well agreed with the second-order model and Langmuir isotherm. Finally, the thermodynamic parameters were studied.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2019 Elsevier Ltd. This is an author produced version of a paper published in Carbohydrate Polymers. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Chitosan; Porous PLLA nanofibres; Adsorption; Langmuir model |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Arts, Humanities and Cultures (Leeds) > School of Design (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 21 Mar 2021 16:34 |
Last Modified: | 25 Jun 2023 22:36 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.carbpol.2019.115343 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:172154 |