Activated mangrove biochar for sustainable carbon sequestrationDessy Ariyanti, Denny Nugroho Sugianto, Aprilina Purbasari, Nadya Ummi Azizah, Arif Rizqi Nurwidiyanto and Wei GaoE3S Web Conf., 655 (2025) 01028DOI: https://doi.org/10.1051/e3sconf/202565501028