TECHICAL Series MATHEMATICS • INFORMATICS • PHYSICS Series PHILOLOGY Series ECONOMIC SCIENCES Sereies EDUCATIONAL SCIENCES Series LAW AND SOCIAL SCIENCES Series
Lead Ions Removal with Cellulose Acetate/Hydroxyapatite Composite Membranes
(Îndepărtarea ionilor de plumb cu ajutorul membranelor compozite pe bază de acetat de celuloză şi hidroxiapatită)
Vol LXII • No. 3A/2010
Gabriela Ciobanu, Gabriela Carja, Dorina Ignat, Constantin Luca, Maria Harja
"Gheorghe Asachi" Technical University of Iasi, Str. Prof. dr. Doc. Dimitrie Mangeron, 73, Iasi, Romania
e-mail: gciobanu03@yahoo.co.uk

 Keywords   cellulose acetate, hydroxyapatite, composite, lead ions removal.

 Abstract
This work describes the characteristics of cellulose acetate/hydroxyapatite composite membranes. The capacity of cellulose acetate/hydroxyapatite composite membranes for removal of lead ions from aqueous solution was investigated. Cellulose acetate/hydroxyapatite composite membrane has shown an ability to retain Pb2+ ions from aqueous solutions. Cellulose acetate/hydroxyapatite composite membrane was effective in removing Pb2+ ions from solutions with 81 % Pb removed. The effective removal of Pb2+ ions from aqueous solution suggests that porous cellulose acetate/hydroxyapatite composite membranes have the potential to immobilize Pb2+ ions in lead-contaminated wastewaters.

 Rezumat
Această lucrare descrie o serie de caracteristici ale unor membrane compozite pe bază de acetat de celuloză şi hidroxiapatită. A fost investigată capacitatea acestor compozite în îndepărtare a ionilor de plumb din soluţii apoase. Compozitele de tip acetat de celuloză/hidroxiapatită demonstrează o abilitate bună în a reţine ionii Pb2+ din soluţii apoase, respectiv pot elimina un minim de 81 % Pb. Eliminarea efectivă a ionilor Pb2+ din soluţie apoasă sugerează că aceste membrane compozite au o bună capacitate de a imobiliza ionii Pb2+ din apele contaminate.



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