Microscale Analyses of Mineral Particles in Sugar Cane Bagasse and Straw Shed Light on How Debris Can Be Incorporated into Biomass
| Autor: | Liu Y. Ling, Ricardo de Oliveira Bordonal, Djanira R. Negrao, Carlos Driemeier |
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| Rok vydání: | 2019 |
| Předmět: |
General Chemical Engineering
Energy Engineering and Power Technology Biomass RAIOS X 02 engineering and technology Straw 021001 nanoscience & nanotechnology Solid fuel Pulp and paper industry Debris Fuel Technology 020401 chemical engineering Biofuel Environmental science 0204 chemical engineering 0210 nano-technology Bagasse Microscale chemistry Renewable resource |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| Popis: | Sugar cane bagasse and straw are vast, inexpensive renewable resources that can be used as solid fuels as well as feedstocks for production of materials, chemicals, and advanced biofuels. However, industrial valorization of bagasse and straw can be hampered by the mineral impurities commonly present in the biomass. In this work, we use synchrotron X-ray computed microtomography (μCT) and scanning X-ray microfluorescence (μXRF) to observe and analyze mineral particles in sugar cane bagasse and straw. On the basis of the microscale analyses, we suggest possible mechanisms that contribute to the incorporation of extraneous inorganic matter into biomass, especially soil debris. Our analyses discriminate between (1) mineral particles having a characteristic range of size (circa 5–27 μm) found at surfaces as well as inside biomass particles, (2) the contribution of water that keeps larger mineral particles adhered to the biomass, and (3) soil aggregates that are adhered to the surfaces of straw, with no equival... |
| Databáze: | OpenAIRE |
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