{"title":"A novel eco-friendly composite panel based on pistachio shells and sunflower capitulum: acoustic, thermal, and combustibility characterizations","authors":"Mohammadreza Jamshidijam, Mohamed Ackmez Mohit","doi":"10.1007/s42768-025-00275-w","DOIUrl":null,"url":null,"abstract":"<div><p>Environmental issues such as climate change and resource depletion highlight the need for sustainable solutions in construction. This study explores the feasibility of making wood-based panels from agricultural wastes, namely, pistachio shells (PS) and sunflower capitulum (SC), to address the rising demand for eco-friendly materials. Using sun-dried raw materials, composite panels with SC:PS ratios of 0:100, 25:75, 50:50, 75:25, and 100:0 were produced with polyurethane adhesive and tested for density, thermal conductivity, sound absorption, and combustion behavior. Increasing SC content lowered the density (365 to 205 kg/m<sup>3</sup>) and thermal conductivity (0.89 to 0.54 W/m·K) while enhancing sound absorption (0.537 to 0.813). In contrast, a higher PS content yielded a higher density, contributed to a reduced rate of CO emission (0.0019 to 0.0016 g/s) and increased the ignition time from 20 to 30 s. These findings highlight a sustainable approach to utilizing agricultural waste as construction materials with potential applications in lightweight partition walls, interior acoustic panels and thermal insulation boards.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":807,"journal":{"name":"Waste Disposal & Sustainable Energy","volume":"8 1","pages":"61 - 70"},"PeriodicalIF":0.0000,"publicationDate":"2026-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Waste Disposal & Sustainable Energy","FirstCategoryId":"6","ListUrlMain":"https://link.springer.com/article/10.1007/s42768-025-00275-w","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
Environmental issues such as climate change and resource depletion highlight the need for sustainable solutions in construction. This study explores the feasibility of making wood-based panels from agricultural wastes, namely, pistachio shells (PS) and sunflower capitulum (SC), to address the rising demand for eco-friendly materials. Using sun-dried raw materials, composite panels with SC:PS ratios of 0:100, 25:75, 50:50, 75:25, and 100:0 were produced with polyurethane adhesive and tested for density, thermal conductivity, sound absorption, and combustion behavior. Increasing SC content lowered the density (365 to 205 kg/m3) and thermal conductivity (0.89 to 0.54 W/m·K) while enhancing sound absorption (0.537 to 0.813). In contrast, a higher PS content yielded a higher density, contributed to a reduced rate of CO emission (0.0019 to 0.0016 g/s) and increased the ignition time from 20 to 30 s. These findings highlight a sustainable approach to utilizing agricultural waste as construction materials with potential applications in lightweight partition walls, interior acoustic panels and thermal insulation boards.
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