{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T12:12:41Z","timestamp":1768479161465,"version":"3.49.0"},"reference-count":47,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2025,4,18]],"date-time":"2025-04-18T00:00:00Z","timestamp":1744934400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Water"],"abstract":"<jats:p>Freshwater scarcity is a growing concern, exacerbated by industrial effluents containing dyes and other pollutants that endanger aquatic ecosystems. This study explores the potential of biochar sorbents, derived from renewable seaweed biomass, as a sustainable solution for water decontamination. Seaweed biomass (sarga\u00e7o), collected from Portuguese seashores, was carbonized at 300 \u00b0C and 400 \u00b0C to produce biochar. Adsorption experiments with methylene blue (MB) revealed that carbonization at 400 \u00b0C, followed by ball milling, significantly enhanced adsorption performance. Langmuir isotherm analysis demonstrated a maximum adsorption capacity of 500 mg MB\/g sorbent for the optimized biochar (400 \u00b0C, ball milled), with adsorption efficiency improving at elevated temperatures and pH levels up to 12. Infrared reflectance spectra of fresh and post-adsorption biochars confirmed the involvement of \u03c0\u2013\u03c0 interactions and hydrogen bonding in the adsorption mechanism. These findings highlight the potential of seaweed-derived biochar as an effective and eco-friendly solution for water purification.<\/jats:p>","DOI":"10.3390\/w17081215","type":"journal-article","created":{"date-parts":[[2025,4,20]],"date-time":"2025-04-20T20:15:06Z","timestamp":1745180106000},"page":"1215","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Seaweed-Derived Biochar for Effective Treatment of Dye-Contaminated Wastewater"],"prefix":"10.3390","volume":"17","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4585-470X","authenticated-orcid":false,"given":"Ana Paula","family":"Soares Dias","sequence":"first","affiliation":[{"name":"CERENA, Center for Natural Resources and Environment, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisbon, Portugal"},{"name":"VALORIZA\u2014Research Centre for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal"}]},{"given":"Francisco Ascen\u00e7\u00e3o","family":"Santos","sequence":"additional","affiliation":[{"name":"Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6720-6132","authenticated-orcid":false,"given":"Bruna","family":"Rijo","sequence":"additional","affiliation":[{"name":"VALORIZA\u2014Research Centre for Endogenous Resource Valorization, Polytechnic Institute of Portalegre, 7300-555 Portalegre, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5145-4753","authenticated-orcid":false,"given":"Dina Costa","family":"Simes","sequence":"additional","affiliation":[{"name":"CCMAR, Centre of Marine Sciences, Universidade do Algarve, Estr. da Penha, 8005-139 Faro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6819-0619","authenticated-orcid":false,"given":"Leonel","family":"Pereira","sequence":"additional","affiliation":[{"name":"Department of Life Sciences, University of Coimbra, Cal\u00e7ada Martim de Freitas, 3000-456 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7932-8062","authenticated-orcid":false,"given":"Manuel Francisco Costa","family":"Pereira","sequence":"additional","affiliation":[{"name":"CERENA, Center for Natural Resources and Environment, Instituto Superior T\u00e9cnico, Universidade de Lisboa, Av. Rovisco Pais, 1, 1049-001 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2025,4,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1061","DOI":"10.1016\/j.biortech.2005.05.001","article-title":"Non-conventional low-cost adsorbents for dye removal: A review","volume":"97","author":"Crini","year":"2006","journal-title":"Bioresour. Technol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"115981","DOI":"10.1016\/j.jenvman.2022.115981","article-title":"Recent advances in the removal of dyes from wastewater using low-cost adsorbents","volume":"321","author":"Bilal","year":"2022","journal-title":"J. Environ. Manag."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"4497","DOI":"10.1039\/D1MA00354B","article-title":"Recent advances on the removal of dyes from wastewater using various adsorbents: A critical review","volume":"2","author":"Dutta","year":"2021","journal-title":"Mater. 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