Methylene Blue (MB) is selected as a model compound for evaluating the potential of prawn waste to remove dye from wastewaters. MB is a thiazine (cati.
onic) dye, which is most commonly used for coloring paper, temporary hair colorant, dyeing cottons, wools and so on. Although MB is not considered to be a toxic dye, it can reveal harmful effects on living things. After inhalation, symptoms such as difficulties in breathing, vomiting, diarrhea and nausea can occur in humans [17]. Due to increase of shellfish consumption in the past decade, the derived shell from the aquaculture farming and commercial market has become one of the most significant wastes in Nagapattinam, Tamil Nadu. Most were locally dumped into public waters and lands without proper treatment, causing a serious odor problem as a result of the remaining attached to the shell.