Surface modification of recycled fabric materials with conductive polyaniline and its role in organic matter adsorption

Dumping of spent fabric material has created extra solid wastes for the landfill. Noting this, the present work converted spent fabric material into a new adsorbent for humic acid (HA) removal. Here, a facial sheet mask was used as the model fabric material. The spent facial sheet mask was thoroughl...

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Bibliographic Details
Published in:	International journal of environmental science and technology (Tehran) Vol. 19; no. 9; pp. 8945 - 8956
Main Authors:	Goh, J. M. S., Wang, F., Yeap, S. P.
Format:	Journal Article
Language:	English
Published:	Berlin/Heidelberg Springer Berlin Heidelberg 01-09-2022
Subjects:	Aquatic Pollution Earth and Environmental Science Ecotoxicology Environment Environmental Chemistry Environmental Science and Engineering Original Paper Soil Science & Conservation Waste Water Technology Water Management Water Pollution Control Flexible conductor Adsorption Dip-coating Fabric Humic acid
Online Access:	Get full text
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Summary:	Dumping of spent fabric material has created extra solid wastes for the landfill. Noting this, the present work converted spent fabric material into a new adsorbent for humic acid (HA) removal. Here, a facial sheet mask was used as the model fabric material. The spent facial sheet mask was thoroughly cleaned and modified with polyaniline (PANI) via a facile dip-coating method. Satisfactory of the modification was verified by Fourier transform infrared spectroscopy and scanning electron microscopy analyses. Experimental results showed that the PANI-coated mask outperformed the blank mask in HA removal due to the presence of amine and imine groups in the PANI. Hence, increasing the PANI loading from 1 to 10 g/L significantly improved the HA adsorption from 51.9 ± 0.4 to 83.1 ± 0.21%. Furthermore, the PANI-coated mask showed a pH-dependency in HA removal, with the highest removal achieved at pH 2 (80.5 ± 0.05%) where both adsorption and self-precipitation of HA occur simultaneously. The efficiency dropped to 51.9 ± 0.4% at pH 4 where adsorption plays the dominant role. Model fitting indicated that the adsorption followed the pseudo-second-order model and is explainable by three-stage intraparticle diffusion model. While PANI itself is electrically conductive, the PANI-coated mask is also potential to be used as an electrical conductor.
ISSN:	1735-1472 1735-2630
DOI:	10.1007/s13762-021-03757-6