REMOVAL OF ALUMINIUM BY PADINA AS BIOADSORBANT
Bioadsorption is an effective low cost tool for cleaning polluted environment. In the present study various concentrations of Aluminium chloride (2mM, 4mM, 6mM, 8mM and 10mM) were used to treat seedlings of Vigna radiata (L.) Wilczek. After ten days of treatment, the morphometric characters such as root length, shoot length, leaf area, fresh weight and dry weight were found decreased than in the control. Biochemical characters such as chlorophyll, carotenoids, soluble sugar and protein content also decreased with the increase in the concentration of Aluminium chloride. In contrary, the free amino acid, proline levels increased. Likewise the activity of enzymes such as catalase and peroxidase was found increased with increasing concentration of Aluminium chloride. The fore said findings were confirmed by AAS study. Application of seaweed (Padina commersonni) treated Aluminium chloride solution in different amounts (2gm/L, 4gm/L and 6gm/L) has bought about relief from stress caused by Aluminium chloride. The ill-effects of metal stress because of the accumulation of metal in plant was decreased with the application of seaweed proving that the seaweeds are good, low cost bioadsorbants of Aluminium chloride.