Insights into the adsorptive application of solvent assisted hydrothermal carbonization products
<p dir="ltr">Solvent-assisted hydrothermal carbonization or solvothermal <u>carbonization</u> (STC) is a process involving the conversion of biomass into carbonaceous materials (solvochar) with the presence of a solvent. Unlike traditional hydrothermal carbonization STC o...
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2025
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| Summary: | <p dir="ltr">Solvent-assisted hydrothermal carbonization or solvothermal <u>carbonization</u> (STC) is a process involving the conversion of biomass into carbonaceous materials (solvochar) with the presence of a solvent. Unlike traditional hydrothermal carbonization STC operates at lower temperatures and uses solvents rather than water. The types of solvents that are commonly reported in literature are organic and inorganic solvents, <u>ionic liquids</u>, and<u> deep eutectic solvents</u>. Solvochar has shown high effectiveness in adsorbing pollutants in both liquid phases (e.g., dyes, organic compounds, and heavy metals) and gaseous phases (e.g., CO₂). Adsorption studies suggest monolayer adsorption in most cases, based on the Langmuir isotherm, while <u>kinetic studies</u> highlight <u>chemisorption </u>via pseudo-second-order models. For gaseous applications, solvochar can be thermally regenerated, while liquid-phase applications require chemical eluents. These properties enable solvochar to be reused for multiple cycles, where solvochar could be regenerated for approximately 5 cycles using chemical eluents in liquid phase and 10 cycles thermally in gas-phase applications. Future studies should work towards developing continuous scaled-up processes, the use of <u>real wastewater</u>, as well as techno-economic analysis to ensure the cost effectiveness and applicability of solvochar on a commercial scale.</p><h2>Other Information</h2><p dir="ltr">Published in: Journal of Environmental Chemical Engineering<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.jece.2025.117464" target="_blank">https://dx.doi.org/10.1016/j.jece.2025.117464</a></p> |
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