{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,15]],"date-time":"2025-12-15T16:13:54Z","timestamp":1765815234584,"version":"3.48.0"},"reference-count":42,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2025,12,15]],"date-time":"2025-12-15T00:00:00Z","timestamp":1765756800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"PT national funds"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Environments"],"abstract":"<jats:p>Agricultural residues, such as vineyard prunings, are abundant yet underutilized resources with potential for conversion into value-added products. In this study, vineyard prunings were investigated for the first time as feedstock for nutrient-enriched biochars intended for use as enhanced efficiency fertilizers (EEFs). Four biochars were produced using distinct physical (industrial-scale pyrolysis, CO2-assisted pyrolysis) and chemical (MgCl2, AlCl3 pretreatment) procedures. Their adsorption capacities for nitrogen (N), phosphorus (P), and potassium (K) were evaluated across a wide pH range (2\u201313). Optimization studies, including dosage, kinetics, and isotherms, revealed maximum Langmuir adsorption capacities of 10.4 mg N g\u22121 and 12.7 mg P g\u22121, which were comparable to or higher than other low-cost agricultural biochars, confirming the competitive performance of vineyard pruning-derived biochars. Beyond adsorption efficiency, these biochars provide additional benefits by valorizing a widely available viticulture residue, reducing open-field disposal and burning, and generating low-cost fertilizers that may reduce nutrient leaching and improve soil health. This work introduces a novel circular pathway linking vineyard waste management to sustainable nutrient delivery, integrating agricultural byproduct utilization with environmental remediation strategies.<\/jats:p>","DOI":"10.3390\/environments12120491","type":"journal-article","created":{"date-parts":[[2025,12,15]],"date-time":"2025-12-15T15:52:59Z","timestamp":1765813979000},"page":"491","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Optimizing Vineyard Pruning Biochars for Nutrient Adsorption: Toward Sustainable Fertilizer Applications"],"prefix":"10.3390","volume":"12","author":[{"given":"Olena","family":"Dorosh","sequence":"first","affiliation":[{"name":"REQUIMTE\/LAQV, Instituto Superior de Engenharia do Porto, Instituto Polit\u00e9cnico do Porto, Rua Dr. Ant\u00f3nio Bernardino de Almeida, 431, 4249-015 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1176-9064","authenticated-orcid":false,"given":"Andreia F.","family":"Peixoto","sequence":"additional","affiliation":[{"name":"REQUIMTE\/LAQV, Department, de Qu\u00edmica e Bioqu\u00edmica, Faculdade de Ci\u00eancias, Universidade do Porto, Rua do Campo Alegre s\/n, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3924-776X","authenticated-orcid":false,"given":"Cristina","family":"Delerue-Matos","sequence":"additional","affiliation":[{"name":"REQUIMTE\/LAQV, Instituto Superior de Engenharia do Porto, Instituto Polit\u00e9cnico do Porto, Rua Dr. Ant\u00f3nio Bernardino de Almeida, 431, 4249-015 Porto, Portugal"}]},{"given":"Paula M. L.","family":"Castro","sequence":"additional","affiliation":[{"name":"CBQF\u2014Centro de Biotecnologia e Qu\u00edmica Fina\u2014Laborat\u00f3rio Associado, Escola Superior de Biotecnologia, Universidade Cat\u00f3lica Portuguesa, Rua de Diogo Botelho, 1327, 4169-005 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1500-9211","authenticated-orcid":false,"given":"Manuela M.","family":"Moreira","sequence":"additional","affiliation":[{"name":"REQUIMTE\/LAQV, Instituto Superior de Engenharia do Porto, Instituto Polit\u00e9cnico do Porto, Rua Dr. Ant\u00f3nio Bernardino de Almeida, 431, 4249-015 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2025,12,15]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Komnitsas, K.A., and Zaharaki, D. (2016). Morphology of modified biochar and its potential for phenol removal from aqueous solutions. Front. Environ. 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