Fast Pyrolysis as a Valorization Mechanism for Banana Rachis and Low‐Density Polyethylene Waste

Abstract

Banana rachis and low-density polyethylene (LDPE) were selected as secondary feedstocks for the study of fast pyrolysis in a free-fall reactor. The experiments were performed at 600 °C for banana rachis and 450 °C for LDPE, based on literature and thermogravimetric analysis. The gaseous products of both feedstocks present similar composition in the C1-C2 compounds, while C3 compounds are only found in LDPE. The liquid products from banana and LDPE correspond to functional groups and shorter hydrocarbons, respectively. Scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) analyses of the char showed important morphological changes to spheres in LDPE and structural changes due to thermal decomposition in the biomass. The pyrolysis char has high potential as adsorbent, encapsulation, or catalyst.

Influence of the Nitrogen Flowrates on the Bio Oil Production and Characterization from Pyrolysis of Oil Palm Empty Fruit Bunch

“…Oil Palm EFB Pyrolysis Product Yield. The main products of pyrolysis are bio-oil, noncondensable gas, condensed liquid, and charcoal (bio-char) [10,11]. The yield is defined as the percentage of product weight compared to the total weight of raw material [12,13].…”

Valorization of residual lignocellulosic biomass in South America: a review

“… Briquettes Mendoza Fandiño et al ( 2020 ) Ecuador Pyrolysis Oil palm stalk, Jatropha curcas branches, corn stubble, oil palm bunches, and banana rachis. Biogas, biodiesel, and bio-oil Pérez Arévalo and Velázquez Martí ( 2020 ); Tombo et al ( 2020 ) Medina et al ( 2019 ); Meneses ( 2021 ) Streitwieser et al ( 2021 ) Direct combustion Corn stover, cocoa husk, dried corn, banana, African palm, banana and plantain leaves and pseudo stems, teak leaves, and palm kernel husk. Thermal energy Martillo et al ( 2020 ); Aseffe et al ( 2019 ) Salgado et al ( 2019 ); Pérez Arévalo and Velázquez Martí ( 2020 ) Aguilar Romero ( 2019 ); Machuca et al ( 2020 ) Gasification Corn stubble and sugar cane bagasse.…”