Suneerat RuangsomboonAmnat ChidthaisongBoosya BunnagDuangrat InthornNarumon W. HarveyKing Mongkuts University of Technology ThonburiMahidol University2018-08-202018-08-202006-07-01Kasetsart Journal - Natural Science. Vol.40, No.3 (2006), 784-794007551922-s2.0-33847211469https://repository.li.mahidol.ac.th/handle/20.500.14594/22885Pb2+ removal ability of the living-freshwater cyanobacterium C. marchica was studied in batch experiments. The result showed that adsorption of Pb2+ by C. marchica reached equilibrium within 60 min. The amount of Pb2+ adsorbed (qeq) increased when cyanobacterial age increased. At lower biomass concentration cyanobacterium showed higher q eq than that at high biomass concentration. Elevated temperature increased Pb2+ adsorbed by C. marchica. The Langmuir adsorption isotherm fitted the results better than the Freundlich isotherm and, thus, was more suitable to describe Pb2+ adsorption by C. marchica. C. marchica had Pb2+ binding capacity (qmax) of 74.04 mg g -1, and indicators of adsorption capacity (Kf) of 18.01. Pb2+ removal under light and dark conditions was not significantly different.Mahidol UniversityAgricultural and Biological SciencesArticleSCOPUS