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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

CO2 adsorption of bagasse waste feedstock using thermogravimetric analyses

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Peres, Christiano Bruneli [1] ; Rosa, Andre Henrique [1] ; de Morais, Leandro Cardoso [1]
Total Authors: 3
[1] Sao Paulo State Univ UNESP Julio de Mesquita Filh, Inst Sci & Technol, Av Tres Marco 511, BR-18087180 Sorocaba, SP - Brazil
Total Affiliations: 1
Document type: Journal article
Web of Science Citations: 0

Nowadays, global warming is mainly caused by increase in CO2 concentration in the environment; to mitigate this problem, an attractive strategy for efficient CO2 emission reduction was applied: carbon capture. Therefore, this work had as main objective to measure the capture of CO2, through two carbonaceous materials produced from sugar cane bagasse; this biochar was activated chemically with KOH, by two different processes: the impregnated biochar (CA-1) was taken to pyrolysis process at 350 degrees C and another sugarcane bagasse sample was also impregnated, but directly in dry biomass (CA-2), obtaining two carbonaceous material (CA-1 and CA-2), respectively. The prepared carbons were characterized by thermal analysis with heating rate of 10 degrees C min(-1) in N-2 atmosphere, showing two main stages: the first one close to 150 degrees C for biochar samples and the second one in the range of 150-600 degrees C for the same biochar samples, X-ray diffraction (XRD, peaks at 2 theta = 28.41 degrees; 40.50 degrees; 44.52 degrees; 50.29 degrees and 58.61 degrees for CA-1 and 2 theta = 28.27 degrees; 40.45 degrees; 44.60 degrees; 50.15 degrees and 58.63 degrees for CA-2), scanning electron microscopy (SEM) with energy-dispersive X-ray (EDX) and Fourier transform infrared spectroscopy (FTIR, showing peaks at 3675, 2926, 1559, 1364, 1026 and 916 cm(-1) for the biochar samples). CO2 capture was performed by thermogravimetric running test. The samples showed similar physico-chemical characteristics, but the CA-2 sample showed better adsorption performance (1.22 mmol CO2 g(-1)). Heat treatment in an inert atmosphere and chemical activation of biomass are recommended for obtaining carbonaceous material for use in carbon dioxide adsorption processes. (AU)

FAPESP's process: 18/03138-7 - CO2 capture on activated carbon derived from sugarcane bagasse biomass (Saccharum officinarum)
Grantee:Christiano Bruneli Peres
Support type: Scholarships in Brazil - Master