| Issue |
E3S Web Conf.
Volume 655, 2025
International Conference on Chemical and Material Engineering in conjunction with the International Symposium on Applied Chemistry (ICCME-ISAC 2025)
|
|
|---|---|---|
| Article Number | 01028 | |
| Number of page(s) | 5 | |
| Section | Chemical Engineering | |
| DOI | https://doi.org/10.1051/e3sconf/202565501028 | |
| Published online | 27 October 2025 | |
Activated mangrove biochar for sustainable carbon sequestration
1 Departement of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro, Semarang 50275, Indonesia
2 SDGs Center Universitas Doponegoro, Semarang 50275, Indonesia
3 Departement of Oceanography, Faculty of Fisheries and Marine Science, Universitas Diponegoro, Semarang 50275, Indonesia
4 Center of Advanced Materials for Sustainability Universitas Diponegoro, Semarang 50275, Indonesia
5 Departement of Chemical and Materials Engineering, Faculty of Engineering, University of Auckland, Auckland 1142, New Zealand
* Corresponding author: dessy.ariyanti@che.undip.ac.id
Growing concerns over climate instability have intensified the search for sustainable approaches to mitigate atmospheric CO2 accumulation. This study examines the transformation of mangrove litter (Avicennia marina sp.) into biochar and evaluates how acid activation influences its physicochemical and adsorption characteristics. Biochar was produced through pyrolysis at 400 °C for two hours, followed by treatment with 0.1 M HCl to eliminate mineral residues. Characterization using FTIR, SEM–EDX, and BET analyses revealed that acid activation increased surface area and pore volume while reducing oxygen and metallic impurities. These improvements enhanced microporosity and exposed more active functional groups, leading to greater CO2 adsorption potential. The neutral pH and structural stability of the activated biochar indicate its suitability for application in mangrove sediments, where it may contribute to both carbon stabilization and habitat restoration. Overall, acid-activated mangrove biochar represents a promising material for long-term carbon sequestration and coastal ecosystem resilience.
Publisher note: The second author’s name was misspelled “Denny Nugroho”, it has been corrected to “Denny Nugroho Sugianto”, on November 7, 2025.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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