Santika, M. ., Mislina, M., Maulina, D., Harahap, J. ., Afdhal, . A., & Izzah, C. I. N. . (2026). Circular bio-activation of diaper-derived hydrogel into planting media: Determining agronomic pH stability through decentralized waste valorization. CIRCULIZER: Journal of Circular Systems, Innovation, and Technology, 1(1), 39-57. https://doi.org/10.62671/circulizer.v1i1.247