Novel Integrated Biorefinery for Olive Mill Waste Management: Utilization of Secondary Waste for Water Treatment
| Autor: | Jillian L. Goldfarb, Alexander Billias, Melissa Lever, Erica Gunn, Esteve N. Casoliba, Andrea Schievano, Fabrizio Adani, Li Buessing |
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| Rok vydání: | 2016 |
| Předmět: |
Waste management
Renewable Energy Sustainability and the Environment General Chemical Engineering Extraction (chemistry) Supercritical fluid extraction 02 engineering and technology General Chemistry 010501 environmental sciences 021001 nanoscience & nanotechnology Biorefinery 01 natural sciences Adsorption Biochar medicine Environmental Chemistry Environmental science Water treatment 0210 nano-technology Pyrolysis 0105 earth and related environmental sciences Activated carbon medicine.drug |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 5:876-884 |
| ISSN: | 2168-0485 |
| DOI: | 10.1021/acssuschemeng.6b02202 |
| Popis: | Olive mill waste (OMW) management has been a problem in the Mediterranean basin for thousands of years. The solid exiting the extraction process contains polyphenols that are beneficial to humans and phytotoxic to plants. We propose an integrated biorefinery concept for OMW management: supercritical fluid extraction to recover polyphenols, followed by pyrolysis of the solid to produce bio-renewable fuels, and finally activation of the biochar to yield high surface area adsorbents for heavy-metals removal from water. This work details the impact of supercritical fluid extraction on biochars that are subsequently activated with CO2 and KOH. Specific surface areas of the OMW biochars were over 2300 m2/g. Though supercritical fluid extraction increased the surface areas of raw, pyrolyzed, and KOH-activated OMW, the effect was reversed for biochars activated using high-temperature CO2. FTIR analysis showed that the supercritical fluid extraction significantly altered the surface functional groups of raw waste,... |
| Databáze: | OpenAIRE |
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