Potential of using oyster shells in seafood processing wastewater treatment

Abstract

    In Vietnam, the aquaculture and seafood processing industry plays a vital role in economic growth and exports but also generates large amounts of solid waste and wastewater, putting pressure on coastal environments. Oysters and other mollusks are increasingly farmed, producing substantial shell waste each year. While part of this is reused in animal feed or as artificial reefs, most oyster shells are directly discarded, causing pollution and resource waste. In the context of a shift toward sustainable and environmentally friendly consumption, recycling oyster shells is highly practical, helping to reduce pollution while adding economic value. With calcium carbonate (CaCO₃) as their main component, oyster shells hold strong potential for application in seafood processing wastewater treatment. This contributes to mitigating coastal environmental pollution while also promoting a sustainable pathway for the fisheries industry.