Microbial Metabolism in Waste Degradation

The following terms and concepts apply to the metabolic processes by which microorganisms biodegrade hazardous waste substances  

Fungi are particularly noted for their ability to attack long-chain and complex hydrocarbons and are more successful than bacteria in the initial attack on PCB compounds. The potential of the white rot fungus, P. chrysosporium, to degrade biodegradation-resistant compounds, especially organo-chloride species, was previously noted. 

Phototrophic microorganisms, algae, photosynthetic bacteria, and cyanobacteria that perform photosynthesis have lipid bodies that accumulate lipophilic compounds. There is some evidence to suggest that these organisms can induce photochemical degradation of the stored compounds. 

Biologically, the greatest concern with wastes has to do with their toxic effects on animals, plants, and microbes. Virtually all hazardous waste substances are poisonous to a degree, some extremely so. Toxicides vary markedly with the physical and chemical nature of the waste the matrix in which it is contained the type and condition of the species exposed and the manner, degree, and time of exposure. 

---