Biosorption of Cu2+, Cd2+, Pb2+, and Zn2+ using dried marine green macroalga Caulerpa lentillifera.
The sorption of Cu2+, Cd2+, Pb2+, and Zn2+ by a dried green macroalga Caulerpa lentillifera was investigated. The removal efficiency increased with pH. The analysis with FT-IR indicated that possible functional groups involved in metal sorption by this alga were O-H bending, N-H bending, N-H stretching, C-N stretching, C-O, SO stretching, and S-O stretching. The sorption of all metal ions rapidly reached equilibrium within 20min. The sorption kinetics of these metals were governed by external mass transfer and intraparticle diffusion processes. The sorption isotherm followed the Langmuir isotherm where the maximum sorption capacities was Pb2+>Cu2+>Cd2+>Zn2+.
Pavasant
Prasert
P
Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand. prasert.p@chula.ac.th
Apiratikul
Ronbanchob
R
Sungkhum
Vimonrat
V
Suthiparinyanont
Prateep
P
Wattanachira
Suraphong
S
Marhaba
Taha F
TF
D000327:Adsorption; D002413:Cations, Divalent; D046068:Caulerpa; D006863:Hydrogen-Ion Concentration; D019216:Metals, Heavy / Q000493:pharmacokinetics*; D010316:Particle Size; D013696:Temperature
D002413:Cations, Divalent; D019216:Metals, Heavy