Study of thermal behavior and heavy metal sorption on green coconut fibers (Cocos nucifera) through P=S functionalization

• Grant number: 06/06293-6
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: March 01, 2007
• End date: December 31, 2007
• Field of knowledge: Physical Sciences and Mathematics - Chemistry
• Principal Investigator: Breno Pannia Esposito
• Grantee: Dayane Almeida de Sousa
• Host Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

Lignocellulosic residues are easily obtained and cheap materials, which make them interesting starting materials for the production of sorption systems for heavy metals. From an environmental perspective this strategy has two benefits: reuse of a residue (with aggregated value) and the production of a product apt to be used in the remediation of water. In this project, coconut (Cocos nucifera) fibers functionalized with the agents tiophosphoryl chloride Cl3P=S, dimethyltiophosphate (CH3O)2ClP=S and diethyltiophosphate (CH3CH2O)2ClP=S, as well as their products with the Cr3+, Cr6+, Cd2+, Hg2+ and Pb2+ ions will be studied by spectroscopic and thermal methods.