title: Sorption of copper(II) ion from aqueous solution by Tectona grandis l.f. (teak leaves powder).
abstract: Studies on a batch sorption system using Tectona grandis l.f. as adsorbent was investigated to remove copper(II) from aqueous solutions. The adsorption experiments were performed under various conditions such as different initial concentrations, pH, adsorbent dosage and adsorbent particle size. The data showed that 0.1 g of Tectona grandis l.f. was found to remove 71.66% of 20 mg/L copper(II) from 30 mL aqueous solution in 180 min. The experimental equilibrium data were adjusted by the adsorption isotherms from Langmuir and Freundlich models and their equilibrium parameters were determined. The best-adjusted model to the experimental equilibrium data for Tectona grandis l.f. was the Langmuir model. Using the Langmuir model equation, the monolayer sorption capacity of Tectona grandis l.f. was evaluated and found to be 95.40 mg/g. The optimum pH value was found to be 5.5. The pseudo-first-order and pseudo-second-order kinetic models were used to describe the kinetic data. The dynamic data fitted the pseudo-second-order kinetic model.
authors.affiliation: Environmental Pollution Control Engineering Laboratory, Department of Chemical Engineering, College of Engineering, Andhra University, Visakhapatnam 530003, Andhra Pradesh, India.
authors.forename: P
authors.initials: P
authors.lastname: King
authors.forename: P
authors.initials: P
authors.lastname: Srinivas
authors.forename: Y Prasanna
authors.initials: YP
authors.lastname: Kumar
authors.forename: V S R K
authors.initials: VS
authors.lastname: Prasad
mesh_terms: D000327:Adsorption; D002473:Cell Wall / Q000737:chemistry; D002482:Cellulose / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D008031:Lignin / Q000737:chemistry; D015233:Models, Statistical; D010316:Particle Size; D018515:Plant Leaves / Q000737:chemistry; D010940:Plant Proteins / Q000737:chemistry; D011208:Powders; D012996:Solutions; D013634:Tannins / Q000737:chemistry; D013816:Thermodynamics; D014197:Trees / Q000737:chemistry*; D014865:Waste Disposal, Fluid; D014867:Water; D014873:Water Pollutants / Q000032:analysis
chemical_list: D010940:Plant Proteins; D011208:Powders; D012996:Solutions; D013634:Tannins; D014873:Water Pollutants; D014867:Water; D003300:Copper; D002482:Cellulose; D008031:Lignin