Resumen

MARIN M, Gabriela M; SURCULENTO VILLALOBOS, Rodrigo  y  LOPEZ N., Luis. Perspectivas en la utilización de residuos de la industria de la castaña: procesos termoquímicos, revisión bibliográfica. Rev. Bol. Quim [online]. 2023, vol.40, n.4, pp.21-40. ISSN 0250-5460.  https://doi.org/10.34098/2078-3949.40.4.2.

Perspectives in the use of waste from the chestnut industry: thermochemical processes, a review. Commercial technologies for the valorization of Bolivian biomass such as chestnuts were reviewed in the literature. Three technologies showed promise: gasification, pyrolysis and hydrothermal liquefaction.. The final products in the three technologies are: solids (biochar), liquids (bio-oil) and gas (synthesis gas), in different proportions. Gasification generates 85% gas, 10% solid and 5% liquid. Pyrolysis generates between 30-75% liquids, 12-35% solids and 13-35% gases. Hydrothermal liquefaction generates between 20-50% biocrude, 40- 60% aqueous phase, 10-20% solid phase and less than 5% gas. In the case of gasification, the main focus is energy production. Pyrolytic processes focus on producing bio-oils. In hydrothermal liquefaction processes, the most important product is biocrude. Based on the type of product desired, the physicochemical characteristics of the biomass, the pretreatment stages, the types of reactors to be used, the operating conditions and complementary processes must be considered. All these topics are of great importance when implementing a technology for the conversion of waste from the chestnut industry.

Palabras clave : Amazon nut shell; Amazon nut husk; Pyrolysis; Gasification; Hydrothermal liquefaction.

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