Integrated thermochemical conversion process for valorizing mixed agricultural and dairy waste to nutrient-enriched biochars and biofuels
| Autor: | Dylan Mariuzza, Luca Fiori, Jui-Chun Lin, Maurizio Volpe, Jillian L. Goldfarb, Selim Ceylan |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Environmental Engineering Biomass Bioengineering 010501 environmental sciences 01 natural sciences Soil Hydrothermal carbonization 010608 biotechnology Bioproducts Biochar Animals Waste Management and Disposal 0105 earth and related environmental sciences Renewable Energy Sustainability and the Environment Temperature Nutrients General Medicine Pulp and paper industry Manure Biofuel Biofuels Charcoal Environmental science Cattle Female Pyrolysis Cow dung |
| Zdroj: | Bioresource Technology. 328:124765 |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2021.124765 |
| Popis: | Hydrothermal carbonization (HTC) and pyrolysis are two promising thermochemical conversion strategies to valorize agricultural wastes, yet neither process can be implemented alone to sustainably upgrade both wet and dry feedstocks. HTC is ideal for wet feedstocks, such as manure, but its solid hydrochars suffer from low surface area and stability. Pyrolysis is well suited to dry agricultural residues, but pyrolysis biochars have low nutrient contents and bio-oils are often highly oxygenated. We propose an integrated process that co-pyrolyzes a nutrient-rich cow manure hydrochar with raw agricultural residues, which effectively reduces the environmental impact of these wastes while producing value-added bioproducts. Biochars produced from the proposed process are more suitable for soil amendments due to their enhancement in bioavailable nutrients and surface area than the manure hydrochars and raw biomass. Co-pyrolysis of blends enriched with cow manure yield oils higher in alkanes and alkenes with fewer oxygenated compounds. |
| Databáze: | OpenAIRE |
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