Transforming Fish Waste into Green Gold: A Breakthrough in Sustainable Aquaculture

A team of scientists from Shenzhen University, the Institute of Hydrobiology, and Møreforsking has made a groundbreaking discovery in the world of sustainable aquaculture. Their research, published in the Marine Pollution Bulletin, unveils an innovative method to convert fish sludge into valuable nutrients for microalgae growth.

In their study, titled “Recovery of nutrients from fish sludge to enhance the growth of microalga Chlorella sorokiniana CMBB276,” the researchers explored how bacteria can transform fish sludge into liquid nutrients. This process, known as anaerobic digestion, not only significantly reduces the amount of solid waste but also releases dissolved nitrogen, particularly ammonia nitrogen, into the effluent.

What's exciting about this effluent is its potential to fuel the growth of the microalga Chlorella sorokiniana. This particular microalga is rich in protein, making it an excellent addition to fish feed. By harnessing this method, the aquaculture industry can create a sustainable cycle where waste is efficiently recycled into valuable resources.

This research not only helps in managing aquaculture waste but also promotes a more sustainable approach to fish farming. By turning fish sludge into nutrient-rich feed, this research could revolutionize the industry, contributing to both environmental conservation and the production of high-quality fish feed.