Work

Sustainable syngas and H2 from a zootechnical waste: an investigation on fluidized bed gasification of cattle manure

Year: 2025

Type: article

Abstract: Cattle manure (CM) is a zootechnical waste no longer desired for direct land application. Therefore, alternative methods of disposal must be developed, especially in countries with high production of dairy products and meat. Fluidized bed gasification allows for the safe utilization of manure together with the recovery of energy in the form of syngas. In presented research, cattle manure was subjected to fluidized bed gasification in CO2 and O2 atmospheres at T= 850°C. Different CO2 levels (YCO2=0.10, 0.20, and 0.30) or equivalence ratios for O2 (χ=0.3, 0.4, and 0.5) were used during semi-continuous gasification tests. For the CO2 atmosphere, the gas yields of H2, CH4, and CO were the highest at YCO2=0.30 with a conversion degree of 73.7% and maximum cold gas efficiency of 83.1%. For O2 atmosphere, the conversion degree of 86.4% and maximum cold gas efficiency of 60.0% were achieved at lowest equivalence ratio (χ=0.3). A comparative experiment demonstrated the advantage of using a catalytic bed material (dolomite) compared to an inert one (quartzite), the presence of dolomite leading to increased levels of H₂ and CH₄. Tar yield and characteristics for CM and BW were similar, although a slightly larger amount was obtained for cattle manure.

Source: Waste Management

DOI: 10.1016/j.wasman.2025.115140

Authors: Francesco Miccio, Izabella Maj, Lucrezia Polchri, Annalisa Natali Murri

Institutions: Institute of Science, Technology and Sustainability for Ceramics, National Research Council, Silesian University of Technology

Language: English

Topic: Thermochemical Biomass Conversion Processes

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Affordable and clean energy, Climate action

Open Access status: hybrid

Estimated APC paid: $4,450