Paper details

Title:

Biomass Gasification Char as a Low-Cost Adsorbent for CO2 Capture

Author(s):

Benedetti, V., Patuzzi, F., Baratieri, M.

Document(s):

Abstract:

This study wants to investigate a possible valorization route for char from biomass gasification taking advantage of its similarities to biomass-derived activated carbon in terms of properties and mechanisms of formation and assess its suitability for CO2 adsorption. Char was collected from a commercial gasifier operating in South Tyrol, Italy, and characterized through elemental analysis, X-ray diffraction technique, physisorption analysis and scanning electron microscopy. The CO2 adsorption/desorption capacity of the char was investigated through thermogravimetric analysis at different adsorption temperatures (Tads = 50 - 100 °C) and CO2 concentrations (CO2:N2 = 1:1 - 0.8:0.2). CO2 adsorption capacity of char decreases with temperature and increases with CO2:N2 ratio. The highest CO2 uptake of 3.4 % resulted for Tads = 50 °C and CO2:N2 = 1:1.

Keywords:

biomass, CO₂ capture, gasification, char, adsorbent, carbon dioxide (CO₂)

Topic:

Biomass Conversion Technologies for Heating, Cooling and Electricity

Subtopic:

Gasification for power, CHP and polygeneration

Event:

25th European Biomass Conference and Exhibition

Session:

2CV.3.14

Pages:

760 - 764

ISBN:

978-88-89407-17-2

Paper DOI:

10.5071/25thEUBCE2017-2CV.3.14

Price:

FREE