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VALORIZING BIOMASS WASTE: HYDROTHERMAL CARBONIZATION AND CHEMICAL ACTIVATION FOR ACTIVATED CARBON PRODUCTION

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dc.date2025
dc.date.accessioned2025-10-14T12:37:52Z
dc.date.available2025-10-14T12:37:52Z
dc.date.issued2025
dc.description.abstractTHIS STUDY OPTIMIZES THE PRODUCTION OF ACTIVATED CARBONS FROM HYDROTHERMALLY CARBONIZED (HTC) BIOMASS USING POTASSIUM HYDROXIDE (KOH) AND PHOSPHORIC ACID (H3PO4) AS ACTIVATING AGENTS. A 23 FACTORIAL EXPERIMENTAL DESIGN EVALUATED THE EFFECTS OF AGENT-TO-PRECURSOR RATIO, DRY IMPREGNATION TIME, AND ACTIVATION DURATION ON MASS YIELD AND IODINE ADSORPTION CAPACITY. KOH-ACTIVATED CARBONS ACHIEVED SUPERIOR IODINE NUMBERS (UP TO 1289 MG/G) BUT LOWER MASS YIELDS (18?35%), REFLECTING ENHANCED POROSITY AT THE COST OF MATERIAL LOSS. CONVERSELY, H3PO4 ACTIVATION YIELDED HIGHER MASS RETENTION (UP TO 54.86%) WITH MODERATE IODINE NUMBERS (UP TO 1117.3 MG/G), BALANCING POROSITY AND YIELD. HTC PRETREATMENT AT 190 °C REDUCED THE ASH CONTENT, THEREBY ENHANCING THE STABILITY OF HYDROCHAR. THESE FINDINGS HIGHLIGHT THE TRADE-OFFS BETWEEN ADSORPTION PERFORMANCE AND PROCESS EFFICIENCY, WITH KOH SUITED FOR HIGH-POROSITY APPLICATIONS (E.G., WATER PURIFICATION) AND H3PO4 FOR INDUSTRIAL SCALABILITY. THE STUDY ADVANCES BIOMASS WASTE VALORIZATION, ALIGNING WITH CIRCULAR ECONOMY PRINCIPLES AND OFFERING SUSTAINABLE SOLUTIONS FOR ENVIRONMENTAL AND INDUSTRIAL APPLICATIONS, SUCH AS WATER PURIFICATION AND ENERGY STORAGE.
dc.formatapplication/pdf
dc.identifier.doi10.3390/biomass5030045
dc.identifier.issn0961-9534
dc.identifier.issn1873-2909
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/14260
dc.language
dc.publisherBIOMASS & BIOENERGY
dc.relation.uri10.3390/biomass5030045
dc.rightsOPEN ACCESS
dc.subjectHydrothermal carbonization
dc.subjectChemical activation
dc.subjectCircular economy
dc.subjectFactorial design
dc.subjectBiomass valorization
dc.titleVALORIZING BIOMASS WASTE: HYDROTHERMAL CARBONIZATION AND CHEMICAL ACTIVATION FOR ACTIVATED CARBON PRODUCTION
dc.typeARTÍCULO
dspace.entity.typePublication
oaire.licenseConditionCC BY 4.0
ubb.EstadoPUBLICADA
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