Upcycling harmful algal blooms into short-chain organic matters assisted with cellulose-based flocculant
Copyright © 2024 Elsevier Ltd. All rights reserved..
Upcycling harmful algal blooms (HABs) into short-chain organic matters (SCOMs) presents a significantly underexplored opportunity for addressing environmental concerns and achieving circular economy. But there are challenges of low HABs harvesting and SCOMs conversion efficiencies. To address these issues, a novel cellulose-based flocculant derived from abundant agricultural waste (wheat straw) was developed. This flocculant possesses high surface positive charge to aggregate negatively charged microalgae cells via charge neutralization mechanism, resulting in HABs harvesting efficiency of 97 %. Moreover, the flocculant can serve as a carbon to nitrogen (C/N) regulator to optimize the harvested slurry properties for downstream fermentation. Following hydrothermal pretreatment for one hour, the HABs-flocculant slurry was effectively converted into SCOMs with a total energy output of 64.3 kJ/L and energy conversion efficiency of 67 %, in which SCOMs was major contributor (92 %). This work may inspire eco-friendly and cost-effective approach for HABs disposal with extra benefits of SCOMs production.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:397 |
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| Enthalten in: |
Bioresource technology - 397(2024) vom: 01. März, Seite 130425 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Yudong, Nie [VerfasserIn] |
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| Links: |
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| Themen: |
7440-44-0 |
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| Anmerkungen: |
Date Completed 14.03.2024 Date Revised 14.03.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.biortech.2024.130425 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM368305597 |
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| 520 | |a Copyright © 2024 Elsevier Ltd. All rights reserved. | ||
| 520 | |a Upcycling harmful algal blooms (HABs) into short-chain organic matters (SCOMs) presents a significantly underexplored opportunity for addressing environmental concerns and achieving circular economy. But there are challenges of low HABs harvesting and SCOMs conversion efficiencies. To address these issues, a novel cellulose-based flocculant derived from abundant agricultural waste (wheat straw) was developed. This flocculant possesses high surface positive charge to aggregate negatively charged microalgae cells via charge neutralization mechanism, resulting in HABs harvesting efficiency of 97 %. Moreover, the flocculant can serve as a carbon to nitrogen (C/N) regulator to optimize the harvested slurry properties for downstream fermentation. Following hydrothermal pretreatment for one hour, the HABs-flocculant slurry was effectively converted into SCOMs with a total energy output of 64.3 kJ/L and energy conversion efficiency of 67 %, in which SCOMs was major contributor (92 %). This work may inspire eco-friendly and cost-effective approach for HABs disposal with extra benefits of SCOMs production | ||
| 650 | 4 | |a Journal Article | |
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