**3. Factors influencing bioremediation**

There are various factors that needed to be optimized to ensure the success of bioremediation processes [15].

#### **3.1 Nature and concentration of contaminant**

The concentration and nature of the contaminant are among one of the limiting factors for the bioremediation process. The presence of heavy metal impurities inhibits the growth of microbes and as a result of which it tends to inhibit the bioremediation process. Similarly, increased concentration of contaminant in the particular bioremediating site effect the microbial colonies both in terms of growth and enzymatic functioning of the microbes.
