{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T15:28:41Z","timestamp":1787758121263,"version":"build-2784847793"},"reference-count":34,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T00:00:00Z","timestamp":1787702400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>To promote the value-added circular utilization of coastal driftwood, a single salt-exposed driftwood specimen was thermally converted into porous carbon materials by slow pyrolysis. Highly porous carbons are attractive for applications such as adsorption and catalyst support because accessible micro- and mesopores provide a large interfacial area. Prior to carbonization, the thermochemical characteristics of the driftwood were evaluated by proximate analysis, elemental analysis, calorific-value determination, and thermogravimetric analysis (TGA). Pyrolysis was conducted at 400, 500, 600, 700, and 800 \u00b0C with residence times of 0, 30, and 60 min at a heating rate of 10 \u00b0C\/min. The crude biochar products were subsequently washed with reverse-osmosis water. Carbonization temperature was the principal process variable governing pore development. The condition producing the maximum measured porosity was 800 \u00b0C with a 60 min residence time, for which the crude biochar yield was 22.98 wt%. The instrument-reported BET surface area and total pore volume of DW-800-60 were 777.5 m2\/g and 0.47 cm3\/g, respectively. Re-evaluation of the same N2 isotherm using the Rouquerol consistency criteria gave a physically consistent BET estimate of approximately 944.0 m2\/g over P\/P0 = 0.0051\u20130.0597. Gas adsorption indicated a predominantly microporous structure with an additional mesoporous contribution, whereas the scanning electron microscope (SEM) showed inherited micrometer-scale wood channels. DW-800-60 contained 87.6 wt% carbon. Because the botanical species and mineral-salt composition were not identified and practical adsorption or catalytic performance were not tested, the results should be regarded as specific to the investigated specimen and as a basis for future application-oriented evaluation.<\/jats:p>","DOI":"10.3390\/ma19173629","type":"journal-article","created":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T15:04:32Z","timestamp":1787756672000},"page":"3629","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Production of Highly Porous Carbon Materials from Coastal Driftwood"],"prefix":"10.3390","volume":"19","author":[{"given":"Hervan Marion","family":"Morgan","sequence":"first","affiliation":[{"name":"Department of Tropical Agriculture and International Cooperation, National Pingtung University of Science and Technology, Neipu Township, Pingtung 912, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chi-Hung","family":"Tsai","sequence":"additional","affiliation":[{"name":"Department of Resources Engineering, National Cheng Kung University, Tainan 701, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3697-6692","authenticated-orcid":false,"given":"Wen-Tien","family":"Tsai","sequence":"additional","affiliation":[{"name":"Graduate Institute of Bioresources, National Pingtung University of Science and Technology, Pingtung 912, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"112649","DOI":"10.1016\/j.marpolbul.2021.112649","article-title":"Fate and transport of coastal driftwood: A critical review","volume":"170","author":"Murphy","year":"2021","journal-title":"Mar. Pollut. Bull."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1446","DOI":"10.1016\/j.marpolbul.2011.04.021","article-title":"Quantity, distribution, and impacts of coastal driftwood triggered by a typhoon","volume":"62","author":"Doong","year":"2011","journal-title":"Mar. Pollut. Bull."},{"key":"ref_3","doi-asserted-by":"crossref","unstructured":"Cotana, F., Buratti, C., Barbanera, M., Cavalaglio, G., Foschini, D., Nicolini, A., and Pisello, A.L. (2016). Driftwood biomass in Italy: Estimation and characterization. Sustainability, 8.","DOI":"10.3390\/su8080725"},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Pisello, A.L., Fabiani, C., Makaremi, N., Castaldo, V.L., Cavalaglio, G., Nicolini, A., Barbanera, M., and Cotana, F. (2016). Sustainable new brick and thermo-acoustic insulation panel from mineralization of stranded driftwood residues. Energies, 9.","DOI":"10.3390\/en9080619"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"109506","DOI":"10.1016\/j.catena.2025.109506","article-title":"The blue carbon potential of coastal driftwood: Evidence from the Caribbean coast of Colombia","volume":"261","author":"Galgani","year":"2025","journal-title":"Catena"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"115","DOI":"10.1016\/S0961-9534(03)00104-1","article-title":"Dioxin levels in wood combustion\u2014A review","volume":"26","author":"Lavric","year":"2004","journal-title":"Biomass Bioenergy"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"566","DOI":"10.1016\/j.wasman.2018.06.034","article-title":"Exploitable fish waste and stranded beach debris in the Emilia-Romagna Region (Italy)","volume":"78","author":"Greggio","year":"2018","journal-title":"Waste Manag."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"1018","DOI":"10.1016\/j.fuel.2019.05.050","article-title":"Combustion improvements of upgraded biomass by washing and torrefaction","volume":"253","author":"Abelha","year":"2019","journal-title":"Fuel"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"105479","DOI":"10.1016\/j.jaap.2022.105479","article-title":"Review on the catalytic effects of alkali and alkaline earth metals (AAEMs) including sodium, potassium, calcium and magnesium on the pyrolysis of lignocellulosic biomass and on the co-pyrolysis of coal with biomass","volume":"163","author":"Wang","year":"2022","journal-title":"J. Anal. Appl. Pyrolysis"},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Yang, H., Chen, Z., Zhang, Y., Liu, B., Yang, Y., Tang, Z., Chen, Y., and Chen, H. (2024). Catalytic effect of K and Na with different anions on lignocellulosic biomass pyrolysis. Front. Chem. Sci. Eng., 18.","DOI":"10.1007\/s11705-024-2492-3"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"4414","DOI":"10.1016\/j.ijhydene.2018.11.148","article-title":"Syngas production by BFB gasification: Experimental comparison of different biomasses","volume":"44","author":"Maisano","year":"2019","journal-title":"Int. J. Hydrogen Energy"},{"key":"ref_12","first-page":"103224","article-title":"A preliminary evaluation of different residual biomass potential for energy conversion in a micro-scale downdraft gasifier","volume":"57","author":"Puglia","year":"2023","journal-title":"Sustain. Energy Technol. Assess."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Vonk, G., Boy, V., Lanoisell\u00e9, J.-L., and Lendormi, T. (2025). The gasification of marine and coastal resources for syngas production: A review. Energies, 18.","DOI":"10.3390\/en18030616"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"12","DOI":"10.1002\/bbb.1371","article-title":"Utilization of biogenic residues and wastes in thermochemical systems for the production of fuels: Current status of the project","volume":"7","author":"Richter","year":"2013","journal-title":"Biofuels Bioprod. Bioref."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"197","DOI":"10.1016\/j.wasman.2021.08.017","article-title":"Evaluating river driftwood as a feedstock for biochar production","volume":"134","author":"Qatarneh","year":"2021","journal-title":"Waste Manag."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"106604","DOI":"10.1016\/j.jece.2021.106604","article-title":"River driftwood pretreated via hydrothermal carbonization as a sustainable source of hard carbon for Na-ion battery anodes","volume":"9","author":"Qatarneh","year":"2021","journal-title":"J. Environ. Chem. Eng."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"4781","DOI":"10.15376\/biores.6.4.4781-4789","article-title":"Utilization of driftwood as an energy source and its environmental and economic benefit analysis in Taiwan","volume":"6","author":"Tsai","year":"2011","journal-title":"BioResources"},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Tsai, C.H., Morgan, H.M., and Tsai, W.T. (2025). Thermochemical characteristics of anaerobic dairy digestate and its pyrolysis conversion for producing porous carbon materials. Processes, 13.","DOI":"10.3390\/pr13113380"},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Morgan, H.M., Yan, A.D., Lu, Y.S., Tsai, C.H., and Tsai, W.T. (2026). Pore and thermochemical properties of biochar materials produced from moso bamboo under different carbonization conditions. Materials, 19.","DOI":"10.3390\/ma19020310"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"49","DOI":"10.1016\/S0167-2991(07)80008-5","article-title":"Is the BET equation applicable to microporous adsorbents?","volume":"160","author":"Rouquerol","year":"2007","journal-title":"Stud. Surf. Sci. Catal."},{"key":"ref_21","unstructured":"Lowell, S., Shields, J.E., Thomas, M.A., and Thommes, M. (2006). Characterization of Porous Solids and Powders: Surface Area, Pore Size and Density, Springer."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Basu, P. (2018). Biomass Gasification, Pyrolysis and Torrefaction, Academic Press. [3rd ed.].","DOI":"10.1016\/B978-0-12-812992-0.00004-2"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1016\/j.wasman.2016.08.035","article-title":"Thermal degradation of driftwood: Determination of the concentration of sodium, calcium, magnesium, chlorine and sulfur containing compounds","volume":"60","author":"Bartocci","year":"2017","journal-title":"Waste Manag."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"112142","DOI":"10.1016\/j.combustflame.2022.112142","article-title":"Insight into biomass pyrolysis mechanism based on cellulose, hemicellulose, and lignin: Evolution of volatiles and kinetics, elucidation of reaction pathways, and characterization of gas, biochar and bio-oil","volume":"242","author":"Chen","year":"2022","journal-title":"Combust. Flame"},{"key":"ref_25","first-page":"12","article-title":"Effects of pyrolysis temperature and residence time on physicochemical properties of different biochar types","volume":"67","author":"Sun","year":"2017","journal-title":"Acta Agric. Scand. Sect. B\u2014Soil Plant Sci."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1247","DOI":"10.1021\/es9031419","article-title":"Dynamic molecular structure of plant biomass-derived black carbon (biochar)","volume":"44","author":"Keiluweit","year":"2010","journal-title":"Environ. Sci. Technol."},{"key":"ref_27","unstructured":"Lehmann, J., and Joseph, S. (2015). Characteristics of biochar: Physical and structural properties. Biochar for Environmental Management: Science, Technology and Implementation, Routledge. [2nd ed.]."},{"key":"ref_28","unstructured":"Condon, J.B. (2006). Surface Area and Porosity Determinations by Physisorption: Measurements and Theory, Elsevier."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"12891","DOI":"10.1007\/s13399-024-06117-9","article-title":"The feasibility of activated carbon derived from waste seaweed via molten salt activation in a eutectic mixture of ZnCl2-NaCl-KCl for adsorption of anionic dyes","volume":"15","author":"Soroush","year":"2025","journal-title":"Biomass Convers. Biorefin."},{"key":"ref_30","doi-asserted-by":"crossref","unstructured":"Ok, Y.S., Uchimiya, S.M., Chang, S.X., and Bolan, N. (2016). Chemical, physical, and surface characterization of biochar. Biochar: Production, Characterization, and Applications, CRC Press.","DOI":"10.1201\/b18920"},{"key":"ref_31","doi-asserted-by":"crossref","unstructured":"Singh, B., Camps-Arbestain, M., and Lehmann, J. (2017). Analysis of biochars for C, H, N, O and S by elemental analyser. Biochar: A Guide to Analytical Methods, CRC Press.","DOI":"10.1071\/9781486305100"},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"15057","DOI":"10.1039\/D3NJ01331F","article-title":"Type-effects of multiple waste-sourced biochar feedstocks on methylene blue adsorption","volume":"47","author":"Han","year":"2023","journal-title":"New J. Chem."},{"key":"ref_33","first-page":"5141","article-title":"Preparation of porous carbon materials from waste wood chips and the adsorption performance for methylene blue","volume":"54","author":"Wu","year":"2023","journal-title":"J. Funct. Mater."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"128592","DOI":"10.1016\/j.biortech.2023.128592","article-title":"Effective removal of methylene blue with zero-valent iron\/tea residual biochar composite: Performance and mechanism","volume":"371","author":"Wu","year":"2023","journal-title":"Bioresour. Technol."}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/19\/17\/3629\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T15:06:47Z","timestamp":1787756807000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/19\/17\/3629"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8,26]]},"references-count":34,"journal-issue":{"issue":"17","published-online":{"date-parts":[[2026,9]]}},"alternative-id":["ma19173629"],"URL":"https:\/\/doi.org\/10.3390\/ma19173629","relation":{},"ISSN":["1996-1944"],"issn-type":[{"value":"1996-1944","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,8,26]]}}}