Minimizing CO₂ emissions with renewable energy: a comparative study of emerging technologies in the steel industry

Abstract

Implementing CCUS technologies at existing steel plants reduces CO2 emissions by 70%, requiring 1.1 MW h per ton of renewable electricity. H2-based steel-making and CCU technologies require 4 and 8 times more electricity to reach similar reductions.

Design, synthesis, and physicochemical study of a biomass-derived CO2 sorbent 2,5-furan-bis(iminoguanidine)

“…It is widely accepted that the recycling of both CO 2 and the sorbent is indispensable in practical CCUS process ( Gao et al, 2020 ; Flores-Granobles and Saeys, 2020 ; Leclaire and Heldebrant, 2018 ; Gonzalez-Diaz et al., 2020 ). Therefore, in this study, the crystals of FuBIGH 2 (CO 3 ) (H 2 O) 4 were heated at 110°C in oven for one week for the investigation of the robustness of FuBIG in CO 2 capturing and releasing process.…”

Intensification of Chemical Looping Processes by Catalyst Assistance and Combination

“…Clearly, this calls for new and improved catalytic processes and for catalytic technologies that focus on prevention rather than on remediation [3]. To be honest, at present, no efficient technologies exist that enable the use of CO2 as starting or raw material [4][5][6]. Such processes could however serve the dual purpose of producing value-added chemicals using CO2 as a C1 base chemical and reducing CO2 emissions.…”

Engineering metal-organic frameworks for efficient photocatalytic conversion of CO2 into solar fuels

“…To avoid or delay the CO 2 emission into the atmosphere; carbon fixation has been achieved by both natural and artificial techniques such as photosynthesis, forestation, mineral carbonation, ocean fertilization, sequestration, direct ocean dump and geological injection [28,29]. But some of these methods just store the CO 2 in its original form [30]. Furthermore, both means of removing the CO 2 from the flue exhaust (chilling and pressurizing the exhaust or passing through a fluidized bed of amine) are both inefficient and costly.…”