Utilization of the UAE date palm leaf biochar in carbon dioxide capture and sequestration processes.

This paper evaluates the potential use of date palm leaf biochar as a climate change solution through CO 2 capture and sequestration. The pyrolysis of date palm leaf was performed at different temperatures 300°, 400°, 500°, and 600 °C. The physicochemical characteristics of the synthesized biochar were examined using Scanning Electron Microscopy (SEM) with Energy Dispersive X-Ray Analysis (EDX), Fourier transforms infrared spectroscopy (FTIR), Thermogravimetric analysis (TGA), and X-ray diffraction analysis (XRD). Direct gas-solid interaction was carried out in an integrated Fluidized Bed Reactor (FBR), connected with a gas analyzer for maximum and effective mixing between the biochar and CO 2. LabView program was used as data acquisition for an instantaneous calculation of CO 2 adsorption. This study showed that the date palm biochar as porous carbon-based materials has high CO 2 adsorption capacity through physisorption and chemisorption progressions. The adsorption results showed a maximum CO 2 capture percentage of 0.09 kg CO 2 /kg, 0.15 kg CO 2 /kg, 0.20 kg CO 2 /kg, and 0.25 kg CO 2 /kg palm biochar synthesized at 300 °C, 400 °C, 500 °C, and 600 °C, respectively. This paper paid attention to the inexpensive technology applied in CO 2 sequestration, where fluidization provides well mixing of biochar particles with low operation cost. • This study aims to prepare different biochar from date palm leaf (DPL) waste and evaluate its CO 2 capture and sequestration capacity. • Biochar samples were pyrolyzed at different temperatures and were characterized using SEM-EDS, FTIR, TGA, and XRD. • The gas-solid reaction was achieved in the integrated fluidized bed reactor on the different DPL biochar particles. Results indicated that the DPL biochar has a high CO 2 adsorption capacity. • The CO 2 sequestration of the DPL ranged from 07 to 25%, based on different temperatures of biochar pyrolysis. [ABSTRACT FROM AUTHOR]