ABSTRACT

The receptors present at/around a contaminated site,

toxicity of the contaminants to the receptors, principal

responsible parties, regulatory bodies, and the concerned

public are factored in defining the target cleanup levels at

any site.[5]

The rate and the extent of bioremediation at a specific

site depend on 1) the presence of microbial population

capable of degrading the contaminants at the site and 2)

the compatibility of physical-chemical and biological con-

ditions at the site for transformation of the contaminants into

non-toxic innocuous compounds. The physical-chemical

conditions include moisture content, pH, temperature,

concentrations of nutrients, carbon source, electron donor

(energy source), electron acceptor, and availability of

contaminants to the microorganisms. Biological conditions

include toxicity of available contaminants to the micro-

organisms and presence of synergistic, competing, and

preying organisms.