Work

Biochar from Waste Vineyard Pruning as a CO2 Sorbent in Pressure Swing Adsorption: Experimental and Modeling Study

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide Vineyard pruning is an agro-industrial waste largely available in Italy. In this work, biochar from vineyard pruning pellets (previously produced by pyro-gasification at two Equivalence Ratios ( ER )) was chemically activated and tested as a CO 2 sorbent by pressure swing adsorption (PSA), at room temperature and 5, 7, or 9 bar a ( P ). As-received and activated biochar samples showed CO 2 -sorption capacities ( Y ) comparable to or even higher than those of reference sorbents, emerging as good candidates for future PSA scale-up studies. A 2 3 factorial design was adopted to study the dependency of measured Y on factors P, ER, and “activation”. Empirical linear regression models and Langmuir adsorption isotherms were obtained from Y experimental data. The extrapolation of the empirical model gave Y values with admissible deviations (lower than ± 5%) from the Langmuir isotherm in the range of 4–11 bar a . The proposed model is a good predictive tool for future PSA scale-up studies.

Source: ACS Omega

DOI: 10.1021/acsomega.5c00513

Authors: Daniel Mammarella, Katia Gallucci, Andrea Di Giuliano

Institution: University of L'Aquila

Language: English

Topic: Carbon Dioxide Capture Technologies

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

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

Open Access status: gold

Estimated APC paid: $1,935