Saiful, N.A.S. and Nor Faizah Razali 2026. Utilization of Fungal-Derived Chitosan from Flammulina Filiformis (Enoki Mushroom) and Pleurotus Ostreatus (Oyster Mushroom) as a Natural Coagulant in Wastewater Treatment. Progress in Engineering Application and Technology. 7, 1 (May 2026), 653–667.