Widespread tropical agrowastes as novel feedstocks for biochar production: characterization and priority environmental uses
| Autor: | Juan Salvador Chin Pampillo, Ricardo Rojas, Marta Eugenia Pérez Villanueva, Josep M. Alcañiz, Carla E. Giacomelli, Xavier Domene, Isabel Cristina Chinchilla Soto, Ariel Alfaro Vargas |
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| Rok vydání: | 2020 |
| Předmět: |
Carbon sequestration
Palm oil fiber Renewable Energy Sustainability and the Environment Pineapple stubble 020209 energy Amendment Soil amendment Biomass Context (language use) 02 engineering and technology 010501 environmental sciences Raw material Pulp and paper industry 01 natural sciences Coffee hull Thermochemical conversion Biochar 0202 electrical engineering electronic engineering information engineering Environmental science Fiber Pyrolysis 0105 earth and related environmental sciences |
| Zdroj: | Biomass Conversion and Biorefinery, Kérwá Universidad de Costa Rica instacron:UCR |
| ISSN: | 2190-6823 2190-6815 |
| DOI: | 10.1007/s13399-020-00714-0 |
| Popis: | Biochar, a carbon-rich pyrolytic product, has demonstrated positive results as a soil improver and carbon sequestration agent. Its production could be an appropriate and innovative practice for agricultural waste management in the context of environmentally smart agriculture. However, considering the relevant effect of the production conditions on the final biochar properties, its characterization is a necessary step, moreover, if an unknown feedstock is being used. Coffee hulls (CH), pineapple stubble (PS), and palm oil fiber (PF) are typical tropical agro-industrial wastes, and biochar from the first two are not reported before. In this work, biochars from them were obtained after 1 h of pyrolysis at 600 °C. Surface area and pH of biochars were close to 60 m2g−1 and 9, respectively (except for PF which was 29 m2g−1), while torrefied biomass (charred material prepared at 300 °C) presented a surface area close to 1 m2g−1 and neutral pH. Fixed C was approximately 80% (PF and CH) and 59% (PS) for biochars and close to 40% in torrefied biomass. It was concluded that key properties of biochars were mostly determined by the feedstock’s origin. Due to its high ash content and surface area, PS biochar was identified as a suitable soil amendment, while PF and CH biochars showed a higher potential for carbon sequestration in soil due to their high fixed carbon content, demonstrating that the production of biochars from widespread tropical wastes tailored for specific environmental uses is possible. UCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro en Investigación en Contaminación Ambiental (CICA) UCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Química |
| Databáze: | OpenAIRE |
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