LCCO 2 Assessment and Fertilizer Production from Absorbed-CO 2 Solid Matter in a Small-Scale DACCU Plant

Tianjiao Cheng, Takeji Hirota, Hiroshi Onoda and Andante Hadi Pandyaswargo ()
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Tianjiao Cheng: Graduate School of Environment and Energy Engineering, Waseda University, Tokyo 162-0041, Japan
Takeji Hirota: E-Plus Co., Osaka 592-0012, Japan
Hiroshi Onoda: Graduate School of Environment and Energy Engineering, Waseda University, Tokyo 162-0041, Japan
Andante Hadi Pandyaswargo: Environmental Research Institute, Waseda University, Tokyo 162-0041, Japan

Energies, 2024, vol. 17, issue 19, 1-16

Abstract: This study investigates a novel method of utilizing Direct Air Capture (DAC) technology for fertilizer production. Unlike traditional Direct Air Carbon Capture and Utilization (DACCU) technologies, Direct Air Carbon Capture for Fertilizers (FDAC) has the potential to produce fertilizers directly. This study aims to assess the feasibility of FDAC-based fertilizer production by examining the current state of traditional DAC technologies, evaluating the CO 2 fixation potential of FDAC, and analyzing the decarbonization effect of producing fertilizers using FDAC. Our evaluation results indicate that CO 2 emissions from producing 1 ton of conventional chemical fertilizer, FDAC fertilizer (current status), FDAC fertilizer with ingredient adjustment (sodium hydroxide), and FDAC fertilizer with ingredient adjustment (magnesium hydroxide) are 1.69, 1.12, 1.04, and 1.06 tons of CO 2 , respectively. The FDAC fertilizer (current status) emits 0.57 tons of CO 2 per ton less than commercial fertilizers. FDAC fertilizers also have the potential to reduce CO 2 emissions further when the fertilizer composition is adjusted, offering a promising solution for lowering the environmental impact of fertilizer production. Significant CO 2 reduction can be expected by replacing conventional low-intensity chemical fertilizers with FDAC-produced fertilizers.

Keywords: direct air capture; direct air carbon capture and utilization; fertilizer; life cycle carbon dioxide (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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