Circular Bioeconomy Solutions: Transforming Mushroom Waste into High-Quality Fertilizer with Seashell AdditivesHuynh Thi Kim Huyen, Khuat Hong Truc Vy, Do Vinh Duong and Thanh TranBIO Web Conf., 172 (2025) 03003DOI: https://doi.org/10.1051/bioconf/202517203003