Solid Waste Valorization-Driven Synthesis of Pinus yunnanensis Bark-Derived Adsorbent for Efficient Styrene Removal
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Forestry waste valorization is critical for the circular economy. This work converts Pinus yunnanensis bark into styrene adsorbents via hydrothermal carbonization, with H₃PO₄/KOH modification to enhance performance. Acid-modified carbon showed a 41% higher specific surface area than the unmodified sample. It exhibited excellent thermal stability at 142–268℃. Styrene adsorption on modified carbons fitted the pseudo-second-order model (chemisorption), while the unmodified sample followed the pseudo-first-order model (physical adsorption). This study provides a sustainable route to upcycle forestry waste into efficient VOC adsorbents, aligning with green development goals.
