Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application
| Autor: | M Filip Veljkovic, Milan Kragović, M Vladimir Dodevski, D Marija Stojmenovic, Z Bojan Jankovic, M Ivana Radovic, Miljana Mirković |
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| Rok vydání: | 2020 |
| Předmět: |
lcsh:Mechanical engineering and machinery
020209 energy 02 engineering and technology Activation energy Autocatalysis chemistry.chemical_compound Adsorption Biochar 0202 electrical engineering electronic engineering information engineering medicine lcsh:TJ1-1570 Porosity micro-pores Renewable Energy Sustainability and the Environment Carbonization surface area activation energy chemistry Chemical engineering 13. Climate action Carbon dioxide plane tree seeds derived activated carbons effectively co2 uptake effectively CO2 uptake Activated carbon medicine.drug |
| Zdroj: | Thermal Science, Vol 24, Iss 6 Part A, Pp 3807-3821 (2020) Thermal Science |
| ISSN: | 2334-7163 0354-9836 |
| DOI: | 10.2298/tsci190913064d |
| Popis: | Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds biomass for porous materials derivation. Bio-chars produced via carbonization from plane tree seeds precursor were activated in CO2 at 750 and 850?C, during various residence times. Their surface area and porosity were characterized by N2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO2, which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two-hour residence time. Breakthrough behavior was detected at 850?C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO2 concentration in vicinity of solid surface effect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m2/g, where micro-pores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification. |
| Databáze: | OpenAIRE |
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