“…Indonesian society has not fully utilized the potential of all bivalvia, usually eating only the meat, while the shells are discarded and become waste in the environment (Mediarman et al, 2021). Bivalvia shell contains a high potential of 98% calcium carbonate, while shrimp shells consist of 75% calcium carbonate of the total weight per individual, which can be used optimally (Asmawati et al, 2018). According to Jeon and Yeom (2009), many home and fishing industries in the coastal throw away shells of various types of shellfish, being not used as raw material for their industry.…”