Biochar-based slow/controlled-release fertilizer for sustainable agriculture: Recent advances, challenges and future prospects - D.H.H. Sim; I.A.W. Tan; L.L.P. Lim; F.K.S. Yeo; S. Phornvillay; M. Abat; Su Shiung Lam; B.H. Hameed (Journal of Environmental Chemical Engineering, 2025)