NDLI: Electrospun Chitosan-polyvinyl Alcohol Composite Nanofibers Loaded With Cerium For Efficient Removal Of Arsenic From Contaminated Water

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Electrospun Chitosan-polyvinyl Alcohol Composite Nanofibers Loaded With Cerium For Efficient Removal Of Arsenic From Contaminated Water

Content Provider	CSIR - National Physical Laboratory (NPL)
Author	Sharma, Reena Singh, Nahar Gupta, Ashish Tiwari, Sangeeta Tiwari, Sandeep Kumar Dhakate, Sanjay R.
Abstract	Contamination of water due to arsenic has been extensively reported all over the world. It has led to massive epidemics of arsenic poisoning. An urgent need is being felt to develop efficient techniques for the removal of arsenic from contaminated water. In this context, cerium (Ce) loaded chitosan (CHT)-polyvinyl alcohol (PVA) composite (Ce-CHT PVA) nanofibers were developed by electrospinning technique and have been employed for removing As(III). The Ce-CHT PVA composite nanofibers efficiently adsorb As(III) and purify water below the prescribed limit of WHO EPA. As(III) adsorption over the surface of Ce-CHT PVA has been confirmed by scanning electron microscopy and energy dispersive X-ray spectroscopy (SEM-EDAX), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD). The quantitative estimation of As(111) has been carried out by flameless atomic adsorption spectrophotometer-hydride generator (AAS-HG) system. The As(m) adsorption efficiency of Ce-CHT PVA composite nanofibers has been established as a function of pH, time, temperature and adsorbent dose. The adsorption data were best fitted to Langmuir isotherm, and the maximum adsorption capacity (gm) was found to be 18.0 mg g(-1). The interference studies of several ionic species individually as well multi-element for As removal have also reported. The measurement of the uncertainty of As(m) determination was calculated after determining the contributing factors. The data are reported with a confidence level of 95% (K = 2). The Ce-CHT PVA composite nanofibers are non toxic and can be directly used for water purification or after being embedded in the form of membrane or candles.
Related Links	http://npl.csircentral.net/1272/1/131.pdf
File Format	PDF
ISSN	20507488
Volume Number	2
Issue Number	39
Journal	Journal of Materials Chemistry A
Language	English
Publisher	Royal Society Of Chemistry
Access Restriction	Open
Subject Keyword	Chemistry Energy Fuels Materials Science
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment Materials Science Chemistry

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