Production and characterization of the solid product of coconut pyrolysis
| Autor: | M. L. G. Santos, E. C. S. Paz, G. G. Silva, C. F. Paschoalato, Luciana Rezende Alves de Oliveira, M. M. Pedroza, M. G. Arruda |
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| Rok vydání: | 2021 |
| Předmět: |
Renewable Energy
Sustainability and the Environment Chemistry 020209 energy Thermal decomposition Langmuir adsorption model chemistry.chemical_element 02 engineering and technology 010501 environmental sciences 01 natural sciences symbols.namesake chemistry.chemical_compound Adsorption visual_art Specific surface area 0202 electrical engineering electronic engineering information engineering visual_art.visual_art_medium symbols Charcoal Carbon Pyrolysis Methylene blue 0105 earth and related environmental sciences Nuclear chemistry |
| Zdroj: | Biomass Conversion and Biorefinery. 13:6317-6329 |
| ISSN: | 2190-6823 2190-6815 |
| Popis: | In this present study, it aimed to characterize biomass and obtain charcoal by means of pyrolysis of Cocos nucifera L. from a fractional planning 24-1 to be used in the removal of methylene blue. The investigated effects were temperature of 500 and 550 °C, heating rate 10 and 20 °C/ min, gas flow 1 and 4 mL/ min, and time of 30 and 60 min. The biomass composition showed values for cellulose 36%, hemicellosis 11.2%, lignin 32.1%, calorific value of 17.5 MJKg-1, density 0.158 g / mL, carbon 45.1%, hydrogen 6.8%, oxygen 0.4%, and nitrogen 47.7%. The results indicate that among the investigated effects, only the temperature influenced the charcoal yield. The best yield was at 500 °C with a specific surface area of 30.3801m2/ g, a maximum methylene blue adsorption capacity of 67.7%, and better fit to the Langmuir isotherm model with a correlation coefficient R2 = 0.9804. Regarding thermal analysis, it was observed that above 250 °C lignocellulosic thermal decomposition begins. The charcoal presented uniform size and pores, which influenced the adsorptive process of removing methylene blue. |
| Databáze: | OpenAIRE |
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