The High Adsorption of Celery Biomass to Pb2+ in Water and a Preliminary Investigation on the Mechanisms
ZHANG Tao
LI Saijun
ZHU Xiaoxiao
LYU Jinhong
LI Jianfa
Abstract：The high adsorption capacity of celery biomass to Pb2+ and related mechanisms were investigated for the purpose of finding cost-efficient biosorbents to remove heavy metal contaminants in water.The results indicated that,the celery biomass can adsorb Pb2+ with a capacity up to 100 mg/g,which is much higher than most biomass materials reported previously.The adsorption of celery biomass to Pb2+ was a spontaneous and endothermic process with entropy increase,according to the thermodynamic analysis of adsorption equilibrium data.The adsorption mechanisms of celery biomass to Pb2+ was discussed by combining elemental analysis,infrared spectra,scanning electronic microscope and energy-dispersing spectra,and X-ray diffraction.All these exhibited that the high adsorption of celery biomass is related to its strong reaction capacity like surface complexation and ion exchange.
Keywords：biomassheavy metaladsorptionlead
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 60-64 )