Adsorption of lead ion from aqueous solution unto cellulose nanocrystal from cassava peel

Autor:	Akan B. Williams, A. I. Inegbenebor, Chioma Vivian Abiaziem, C. T. Onwordi, Cyril O. Ehi-Eromosele, Leslie F. Petrik
Rok vydání:	2019
Předmět:	History Aqueous solution Langmuir adsorption model Computer Science Applications Education symbols.namesake chemistry.chemical_compound Adsorption chemistry Nanocrystal Chemical engineering Monolayer symbols Acid hydrolysis Freundlich equation Cellulose
Zdroj:	Journal of Physics: Conference Series. 1299:012122
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/1299/1/012122
Popis:	Acid hydrolysis was used for the synthesis of cellulose nanocrystal (CNC) from cassava peel (CP). The process was carried out at 450C for 45 min using 64% concentrated sulphuric acid, Pb2+ was removed from aqueous solution using the synthesized CNC adsorbent. Cassava peel cellulose nanocrystal (CPCNC) was characterised using FT-IR and X-Ray diffraction techniques. The different operational factors were examined to enhance the conditions for optimum adsorption of Pb2+. The equilibrium adsorption figures fitted well into both the Freundlich and Langmuir isotherm models, indicating that adsorption was due to the formation of a monolayer adsorption unto a homogenous surface and showed a good relationship between the Pb2+ and the CPCNC. The separation factor, RL, which is a dimensionless constant ranged between 0.02 and 0.248 and indicated that the adsorption was feasible and favourable. The optimum adsorption capacity was 6.4 mg Pb2+/g CNC at 25°C and pH 6. This study revealed that this novel nanomaterial has an unlimited prospect for effective removal of lead ion from aqueous solution.
Databáze:	OpenAIRE
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