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ORIGINAL RESEARCH article
Front. Chem.
Sec. Green and Sustainable Chemistry
Volume 13 - 2025 | doi: 10.3389/fchem.2025.1546240
This article is part of the Research Topic Advances in Biochar: Production, Characterization and Environmental Applications View all articles
Advanced Oxidation Using Modified Enteromorpha Algae-Derived Biochar for Marine Sediment Dehydration
Provisionally accepted- 1 National Marine Data & Information Service, Tianjin, China
- 2 China University of Petroleum, Qingdao, Shandong Province, China
- 3 National Center of Ocean Standards and Metrology, Tianjin, China
Abstract： This study aims to enhance the dewatering performance of marine sediment using modified Enteromorpha algae-derived biochar to activate persulfate through an advanced oxidation process. Dehydration of marine dredged sediment is a challenging issue in the field of environmental remediation. Traditional dewatering methods are often inefficient due to the high water content, high Cl⁻ levels, and large volume of marine sediment. To address this, we developed an effective and environmentally friendly dewatering approach using biochar as a conditioning agent in combination with the strong oxidizing properties of persulfate. The biochar was prepared by pyrolyzing Enteromorpha algae at high temperatures and modified with FeSO4 solution to enhance its dewatering performance. The results showed that under the optimal conditions of adding 4% of modified biochar and 1% of persulfate, the specific resistance to filtration (SRF) of sediment decreased by 73.4%, the yield of net solid (YN) increased by 105%, and the dehydration amount increased by 118%. The mechanism underlying the improved dehydration performance of marine sediment was revealed through the analysis of extracellular polymeric substances (EPS), zeta Dehydration of marine dredged sediment is a challenging issue in the field of environmental remediation. In
Keywords: Enteromorpha algae-derived biochar, Persulfate, Advanced oxidation process, Dehydration, marine sediment
Received: 16 Dec 2024; Accepted: 13 Feb 2025.
Copyright: © 2025 Tan, Zhang, Du, Guo, Deng and Gu. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Lun Tan, National Marine Data & Information Service, Tianjin, China
Jian Zhang, National Marine Data & Information Service, Tianjin, China
Jiaoyang Du, China University of Petroleum, Qingdao, 266580, Shandong Province, China
Lianjie Guo, National Marine Data & Information Service, Tianjin, China
Hong Deng, National Center of Ocean Standards and Metrology, Tianjin, China
Yingying Gu, China University of Petroleum, Qingdao, 266580, Shandong Province, China
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