Progress of oyster shell powder resource utilization research
Based on the characteristics of oyster shell,such as high hardness,strong corrosion resistance and excellent toughness,the application status of oyster shell powder in environmental restoration,building materials,new energy development and food and feed industry was reviewed,and the application status of oyster shell powder in environmental management and improvement,environmental protection replacement of building materials,renewable energy development,nutrition maintenance and supplement of food and feed was also reviewed. It was pointed out that oyster shell powder could be used as a biofilter and soil conditioner to effectively control water pollution and promote soil restoration. It could be used as a substitute for mortar aggregate,and could be made into bio-flame retardants,etc.,to reduce the dependence of building materials on natural resources and enhance the safety and use performance of building materials;It could be used as an efficient environmental protection catalyst for the production of renewable energy such as biodiesel and biogas. It could also be used as a calcium supplement,poultry feed additive and antibacterial agent in the food and feed industry to prevent the loss of nutrients and improve their safety. Although the resource utilization of oyster shell powder showed broad market potential,its commercialization process was still restricted by processing costs,standardization and quality control technologies. Future research directions should focuse on developing more efficient oyster shell powder treatment technology,improving its performance and value in different application scenarios,and exploring its application potential in emerging fields such as new energy,biomedicine,etc.,so as to promote the sustainable development of oyster industry.
oyster shell powderresource utilizationenvironmental govemance and improvementfoodfeednutritional ingredient