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http://hdl.handle.net/1942/40214
Title: | Demineralization of common ivy-derived biomass and biochar and its effect on the resulting activated carbon properties | Authors: | VERCRUYSSE, Willem Gomes, Caio Laurino BLEUS, Dries PAPPA, Michaela JOOS, Bjorn HARDY, An MARCHAL, Wouter VANDAMME, Dries |
Issue Date: | 2023 | Publisher: | Source: | SEPARATION AND PURIFICATION TECHNOLOGY, 319 (Art N° 124023) | Abstract: | Biomass waste often contains high amounts of inorganic impurities, which is a limitation for developing high-quality bioproducts, e.g., high-purity activated carbons (ACs). Otherwise, these would be applicable to purify polluted water and air streams. Conventionally, AC’s are purified with non-sustainable and corrosive inorganic acids. This study illustrates the successful removal of the impurities from common ivy, Hedera helix L., through treatment with a natural deep eutectic solvent (NADES), namely choline chloride-malic acid (CCl:MA, 1:1 M). The demineralization efficiency is benchmarked against H2O and dilute hydrochloric acid (HCl). Moreover, the importance of the process sequence, pre- or post- pyrolysis demineralization, for AC-production was investigated. The three solvents showed different biomass (pre-pyrolysis) demineralization efficiencies, they were ranked, from best to worst, as follows: HCl > CCl:MA > H2O. However, demineralizing the biomass after pyrolysis yielded highly porous ACs, with a good mix of meso-and micropores. In this case, no differences in removal performance could be observed between HCl and CCl:MA. Lastly, the ACs phosphate adsorption capacity was highest after demineralizing biomass with either H2O or CCl:MA. Ultimately, this investigation demonstrated CCl:MA’s potential as a green demineralization agent to treat metal-contaminated biomass in future bio-refinery processes. | Keywords: | Common Ivy;Demineralization;Biochar;Natural deep-eutectic solvents;Activated carbon | Document URI: | http://hdl.handle.net/1942/40214 | ISSN: | 1383-5866 | e-ISSN: | 1873-3794 | DOI: | 10.1016/j.seppur.2023.124023 | ISI #: | 001012881500001 | Rights: | Elsevier | Category: | A1 | Type: | Journal Contribution |
Appears in Collections: | Research publications |
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1-s2.0-S1383586623009310-main.pdf Restricted Access | Published version | 1.22 MB | Adobe PDF | View/Open Request a copy |
SEPPUR-D-23-02180_AV.pdf Until 2025-08-15 | Peer-reviewed author version | 2.45 MB | Adobe PDF | View/Open Request a copy |
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