摘要 : There is no study and data about aerial mycelium biosorbents for heavy metal removal. In previous investigations, Aspergillus niger biosorbents were made of vegetative mycelium, called mycelium pellets, which were obtained from th... 展开 There is no study and data about aerial mycelium biosorbents for heavy metal removal. In previous investigations, Aspergillus niger biosorbents were made of vegetative mycelium, called mycelium pellets, which were obtained from the fermentation of a liquid medium, and usually needed lots of procedures to produce. This work therefore was novel that the mycelium of Aspergillus niger were scraped directly from the surface of solid medium (cultivated 7 d) as a kind of biosorbent, called aerial mycelium. In biosorption experiments, aerial mycelium exhibited a short biosorption equilibrium time of 30 min, high copper biosorption capacity (100 mg/g) and high removal efficiency at a pH range of 4.0-6.0. The main Cu2+ biosorption mechanism were electrostatic attraction and Cu2+ ion exchange with K+, Na+, Mg2+ and Ca2+, together with chelation with functional groups such as -COOH, -NH2, -PO43-, and -OH. The biosorption data obtained were well described by the pseudo-second-order kinetic model and the Freundlich isotherm model. In addition, because aerial mycelium can grow on many kinds of moist agro-industrial waste materials, it could be becoming a potential biosorbent in large-scale industrial wastewater treatment. 收起