Circular economy in the sugarcane agroindustry
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2022
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PLANETARY HEALTH ANNUAL MEETING
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Resumo
The sugarcane industry in the process of producing sugar and ethanol generates bagasse in large
amounts. The burning of bagasse used for steam and electricity generation produces 3 million
tonnes of bagasse fly ash (BFA) annually. Handling and improper disposal of BFA cause pollution in
soils, air, and water, which results in environmental challenges and human health problems. The
valorization of BFA is a convenient and sustainable means to reduce solid waste generation and
decrease the environmental pollution load. The purpose of this research is to investigate the application of BFA for the synthesis of zeolite. Because of three-dimensional structure and unique
porous properties, zeolite is a value-added product with many applications such as adsorbent
material and industrial catalysis.
After separation of the coarser particles containing mainly unburned carbon, fine particles of BFA
were used to synthesize zeolite by alkali fusion (550 oC; 1 h; BFA: NaOH= 1:1.2 w/w) followed by
hydrothermal treatment at 100 °C for 3 h. Si/Al molar ratio of 1.0 was adjusted with an external
alumina source. BFA and synthesized zeolite were characterized using XFR, XRD, and MEV. The
results showed that BFA may be used effectively for the synthesis of zeolite NaA with high purity
comparable with the commercial product.
Zeolite NaA is employed in sugarcane mills in the dehydration processes for the removal of water
from the hydrated ethanol. Thus, the application of BFA in zeolitization process strategy provides
not only environmental and economic benefits for the sugarcane agroindustry but also contributes
to a circular economy and towards the achievement of Sustainable Development Goal 12.
Como referenciar
FUNGARO, DENISE A.; IZIDORO, JULIANA de C. Circular economy in the sugarcane agroindustry: bagasse-fly-ash-based zeolite. In: PLANETARY HEALTH ANNUAL MEETING, October 31 - November 2, 2022, Boston, MA, USA. Abstract... Boston, MA, USA: Planetary Health Alliance, 2022. p. 129-130. Disponível em: http://repositorio.ipen.br/handle/123456789/33903. Acesso em: 20 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.