Work

Hydrogen Production from Solid Food Waste by Combined Hydrothermal Pretreatment and Aqueous-Phase Catalytic Reforming

Year: 2025

Type: article

Abstract: Production of sustainable hydrogen will play a key role as the main energy vector for the transition to a decarbonized economy. Of particular interest is the conversion of biomass into hydrogen, adding value to streams that would otherwise go unused. This study demonstrates efficient hydrogen production from orange juice extraction waste using hydrothermal pretreatment and aqueous-phase reforming. Key parameters_temperature, time, initial pH, and biomass concentration_were optimized using Ptbased catalysts (3−5 wt %) on carbon black with enhanced stability. The highest hydrogen yields were achieved under mild hydrothermal conditions (100−120 °C, 1 h), with ca. 1.0 g/L initial total organic carbon (TOCo) and pH 4. Increasing Pt loading not only improved the hydrogen yield but also increased catalyst deactivation. Under optimal conditions, 84% TOC conversion, 77% carbon conversion to gas, and 69 mmol H2/gTOCo were obtained, with hydrogen comprising 54% of the product gas. This integrated approach is promising for converting agroindustrial residues into clean hydrogen

Source: Energy & Fuels

DOI: 10.1021/acs.energyfuels.5c03603

Authors: María Torres, Jéssica Justicia, José A. Baeza, Luisa Calvo, Francisco Heras, Miguel A. Gilarranz

Institutions: Universidad Autónoma de Madrid, Consejo Superior de Investigaciones Científicas, Instituto Nacional del Carbón

Language: English

Topic: Catalysis for Biomass Conversion

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Responsible consumption and production, Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $4,500