Among various available technologies for water pollution control 'biosorption' process is considered better as compared to other methods because of convenience, easy operation, simplicity of design, and it has been shown to be an economically feasible alternative method for removing trace metals from wastewater and water supplies. Further this process can remove/minimize different types of pollutants and thus it has wider applicability in water pollution control. Cost is an important parameter for choosing the adsorbent materials. In general, adsorbent can be assumed to be low cost if it...