Effect of immobilized biosorbents on the heavy metals (Cu2+) biosorption with variations of temperature and initial concentration of waste

4th International Seminar on Sustainable Urban Development

地球科学;经济学

Siwi, W.P.^1 ; Rinanti, A.^1 ; Silalahi, M.D.S.^1 ; Hadisoebroto, R.^1 ; Fachrul, M.F.^1

Environmental Engineering Department, Faculty of Landscape Architecture and Environmental Technology, Universitas Trisakti, Jakarta, Indonesia^1

关键词: Adsorption process;    Biomass concentrations;    Biosorbents;    Copper concentration;    Immobilized microalgae;    Initial concentration;    Langmuir isotherm;    Temperature variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/106/1/012113/pdf
DOI  :  10.1088/1755-1315/106/1/012113

来源: IOP

【 摘 要 】

The aims of research is to studying the efficiency of copper removal by combining immobilized microalgae with optimizations of temperature and initial Copper concentration. The research was conducted in batch culture with temperature variations of 25°C, 30°C, and 35°C, as well as initial Cu2+concentrations (mg/l) of 3, 5, 10, 15 and 20 using monoculture of S. cerevisiae, Chlorella sp., and mixed culture of them both as immobilized biosorbents. The optimum adsorption of 83.4% obtained in temperature of 30°C with an initial waste concentration of 17.62 mg/l, initial biomass concentration of 200 mg, pH of 4, and 120 minutes detention time by the immobilized mixed culture biosorbent. The cell morphology examined using Scanning Electron Microscope (SEM) has proved that the biosorbent surface was damaged after being in contact with copper (waste), implying that heavy metals (molecules) attach to different functional cell surfaces and change the biosorbent surface. The adsorption process of this research follows Langmuir Isotherm with the R2value close to 1. The immobilized mixed culture biosorbent is capable of optimally removing copper at temperature of 30°C and initial Cu2+concentration of 17.62 mg/l.