Removal of contaminants

摘要

Heavy elements such as Pb, Zn, Cd, Ni, Cu and Cr constitute health hazards and are sources for environmental pollution. These elements should therefore be removed from industrial effluents. Biomass of Cladosporium cladosporioides (Fresen.) de Vries. Acc. No. 285712 is readily produced by culture in either standard fungal medium or on media composed of food-industry wastes: whey and distillery slop. The thus produced fungal biomass efficiently removes heavy elements from liquid solutions. Removal is achieved from fluids containing single heavy elements as well as from fluids containing two or more such elements. The removal of Cr can be vastly improved by Pb pretreatment of the biomass. Elements absorbed by Cladosporium cladosporioides Acc. No. 285712 are quantitatively removable providing an effluent-cleaning system which is renewable.