title: Equilibrium and kinetic studies on biosorption of Pb(II) by common edible macrofungi: a comparative study.
abstract: In this work, we studied the natural bioaccumulation and biosorption of Pb(II) in several common edible macrofungi. The macrofungi include the following species: Lentinus edodes, Pleurotus eryngii, Flammulina velutipes, Hypsizygus marmoreus, and Agrocybe cylindracea. The present analysis of Pb(II) revealed distinct capabilities of metal accumulation among individual species. Moreover, the natural concentrations of lead did not reach a health risk level when cultivated in uncontaminated soil. In the biosorption experiment by edible macrofungi, we found that the equilibrium data of living sporocarp (P. eryngii and H. marmoreus) and the homogenate of L. edodes and F. velutipes fit the Freundlich model well. Other data samples exhibited a better fit to the Langmuir model. The edible macrofungi showed a higher lead removal capacity than did other biosorbents. Furthermore, the pseudo-second-order kinetics model exhibited the best fit to the biosorption processes. The effectiveness of edible macrofungi as biosorbents for Pb(II) was confirmed.
authors.affiliation: School of Earth and Space Science, Peking University, Beijing 100871, People's Republic of China.|School of Earth and Space Science, Peking University, Beijing 100871, People's Republic of China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Jiang
authors.affiliation: School of Earth and Space Science, Peking University, Beijing 100871, People's Republic of China.|School of Earth and Space Science, Peking University, Beijing 100871, People's Republic of China.
authors.forename: Ruixia
authors.initials: R
authors.lastname: Hao
authors.affiliation: School of Earth and Space Science, Peking University, Beijing 100871, People's Republic of China.|School of Earth and Space Science, Peking University, Beijing 100871, People's Republic of China.
authors.forename: Shiqin
authors.initials: S
authors.lastname: Yang
mesh_terms: D000327:Adsorption; D000363:Agaricales / Q000378:metabolism*; D004785:Environmental Pollutants / Q000032:analysis / Q000378:metabolism*; D005506:Food Contamination; D007700:Kinetics; D007854:Lead / Q000032:analysis / Q000378:metabolism*
chemical_list: D004785:Environmental Pollutants; D007854:Lead
keywords: Pb(II) ion; biosorption; champignons macroscopiques comestibles communs; cinétique; common edible macrofungi; ion Pb(II); isotherm; isotherme; kinetics