Bio-cleaned lignin-based carbon fiber and its application in adsorptive water treatment

Chen, J and Ghosh, T and Ayranci, C and Tang, T (2022) Bio-cleaned lignin-based carbon fiber and its application in adsorptive water treatment. In: Journal of Applied Polymer Science, 139 (18).

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Abstract

Although an agricultural byproduct, lignin can be a felicitous choice serving as a carbon fiber precursor upon bio-cleaning with Pseudomonas fluorescence. In this study, carbon fiber produced from electrospun bio-cleaned lignin (Bio-KLB) was demonstrated to be a novel efficient adsorbent for methylene blue in wastewater treatment. Bio-cleaning effectively changed lignin from un-electrospinnable to easily-electrospinnable by removing impurities. Bio-KLB carbon fiber mats showed average fiber diameter of 278.95 ± 49.89 nm, and randomly dispersed fiber mats showed average elastic modulus of 1532.87 ± 439.63 MPa and tensile strength of 16.72 ± 5.21 MPa. Adsorption of methylene blue on Bio-KLB carbon fibers was analyzed at pH = 9, where optimal adsorption and decent reusability were observed. Kinetic adsorption was fitted well with pseudo-first-order model while adsorption isotherms were fitted to both Langmuir and Freundlich models. The highest adsorption capacity was 548.65 mg/g based on Langmuir model. The results provide clear evidence that electrospun bio-cleaned lignin-based carbon fibers can be a strong alternative material for dye treatment.

Item Type:	Journal Article
Publication:	Journal of Applied Polymer Science
Publisher:	John Wiley and Sons Inc
Additional Information:	The copyright for this article belongs to John Wiley and Sons Inc.
Keywords:	Adsorption; Aromatic compounds; Cleaning; Lignin; Reusability; Tensile strength; Wastewater treatment, A-carbon; Adsorption, bio-cleaning, carbon fiber, electrospinning, lignin; Agricultural by-products; Carbon fiber precursors; Electrospuns; Fiber applications; Fibermat; ITS applications; Langmuir models; Methylene Blue, Carbon fibers
Department/Centre:	Division of Mechanical Sciences > Centre for Earth Sciences
Date Deposited:	05 Jan 2022 06:37
Last Modified:	24 Jun 2022 05:11
URI:	https://eprints.iisc.ac.in/id/eprint/70899

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