Development of a heavy metal sorption system through the P=S functionalization of coconut (Cocos nucifera) fibers

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2010

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Abstract

Lignocellulosic residues are interesting materials for the production of heavy metal adsorbents for aquatic systems. Whole fibers taken from coconut (Cocos nucifera) husks were functionalized with the thiophosphoryl (P=S) group by means of the direct reaction with Cl3P=S, (CH3O)2ClP=S or (CH3CH2O)2ClP=S in order to obtain an adsorptive system for ‘soft’ metal ions, particularly Cd2+. These functionalized fibers (FFs) were characterized by means of elemental analysis, infrared spectroscopy, thermal analysis and acid–base titration. Adsorption isotherms for Cd2+ fitted the Langmuir model, with binding capacities of 0.2–5 mmol g 1 of FF at 25 C.

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Cocos nucifera, Cadmium, Sulfur, Phosphorus, Remediation

Citation

Bioresource Technology 101 (2010) 138–143

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http://hdl.handle.net/123456789/592

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Coconut