... A COMPARITIVE STUDY OF LOW- COST BIOMATERIALS FOR THE REMOVAL OF CHROMIUM (VI/ III) FROM AQUEOUS SOLUTIONS SYAM KUMAR PRABHAKARAN (B.Tech (Hons.), NUS) A THESIS SUBMITTED FOR THE DEGREE OF MASTER ... studied for Sargassum, Ulva, used tea and coffee dusts The adsorption capacity of Ulva was lower compared to that of Sargassum The removal of hexavalent chromium by seaweeds was observed as a process ... storage of the algal sample 3.2.2 Ulva The green colored marine algae Ulva fasciata sp., used in the present study, was collected from the coastal belt of Thiruvananthapuram, Kerala, India The...