Toxic heavy metal cadmium removal using chitosan and polypropylene based fiber composite

The aim of the present work was to evaluate the performance of polypropylene (PP)/sisal fiber (SF)/banana fiber (BF) and chitosan-based hybrid (chitosan(CS)/SF)/BF) composite materials for the adsorptive removal of cadmium (Cd) ions from water waste. Polypropylene is harnessed for its importance in...

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Bibliographic Details
Published in:International journal of biological macromolecules 2020-12, Vol.164, p.1809-1824
Main Authors: Alaswad, Saleh O., Lakshmi, K. Bakiya, Sudha, P.N., Gomathi, T., Arunachalam, Prabhakarn
Format: Article
Language:English
Subjects:
Adsorption
Biopolymers - chemistry
Cadmium - analysis
Cadmium - isolation & purification
Cadmium - toxicity
Cadmium removal
Chitosan
Chitosan - chemistry
Heavy Metal Poisoning
Hydrogen-Ion Concentration
Ions
Kinetics
Musa - chemistry
Nanocomposites
Polypropylenes - chemistry
Sisal and banana fiber composites
Waste Water
Water Pollutants, Chemical - analysis
Water Purification - methods
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Summary:The aim of the present work was to evaluate the performance of polypropylene (PP)/sisal fiber (SF)/banana fiber (BF) and chitosan-based hybrid (chitosan(CS)/SF)/BF) composite materials for the adsorptive removal of cadmium (Cd) ions from water waste. Polypropylene is harnessed for its importance in forming strong composite materials for various applications. Chitosan biopolymer encloses a great deal of amino and hydroxyl groups, which provide effective removal of Cd ions from wastewater. The batch adsorption studies proved that the removal of Cd ions was pH-dependent and attained optimum at pH 5.5 for both the composites. Langmuir and Freundlich models were applied for the obtained experimental values. Based on the R2 values, it was evidenced that the adsorption process was best fitted with the Freundlich isotherm than Langmuir. The sorption capacity of CS/SF/BF hybrid composite (Cmax = 419 mg/g) is higher than PP/SF/BF composite (Cmax = 304 mg/g), and allows multilayer adsorption. Kinetics studies revealed that the pseudo-second-order model was followed during the removal of Cd ion from wastewater. The overall evaluation proved that though both the adsorbents are suitable for the removal of Cd ions, the efficiency of CS-based ternary composite material is better than PP-based composite.
ISSN:0141-8130
1879-0003
DOI:10.1016/j.ijbiomac.2020.07.252