Carbon neutral manufacturing via on-site CO2 recycling

Abstract

CO 2 electroconversion is a feasible retrofit for petrochemical plants On-site recycling removes several barriers against large-scale CO 2 processing CO 2 recycling concept is economically viable in the current market On-site recycling has potential to remove 4-10 Gt of CO 2 emissions annually by 2050

Assessing the economic potential of large-scale carbonate-formation-free CO2 electrolysis

“…Therefore, many TEA analyses were carried out to find the threshold for profitability. [3][4][5][6][7][8][9][10] The results showed that the Faradaic efficiencies of the target products, the current density of the electrolyzer, and carbonate formation are vital to determining the cost of fuel and chemical production from the CO 2 RR. 11,12 The use of gas diffusion electrodes has greatly enhanced the current densities of CO 2 RR.…”

Towards an accelerated decarbonization of the chemical industry by electrolysis

“…6 From a commercial perspective, ethylene is a particularly promising electrolysis product due its high price in certain markets (Asia, European Union). 32 It has been demonstrated that there exist a large number of applications where ethylene production by electrolysis could yield a remarkable economic benefit, 33,34 assuming electricity prices below $0.045 per kWh and performance metrics currently demonstrated in laboratory environments. In addition to that, there is an increasing demand for green ethylene as a starting material for synthesis of polymers, further used to manufacture carbon neutral Fig.…”

“…It has been demonstrated that if well connected to the existing value chain, these technologies can be economically viable with current renewable electricity prices, even with no CO 2 taxation in place. 33 Use of the electrolysis on a large scale will yield unique knowledge and experience, necessary to develop other systems. Most importantly, scaling up these technologies now means that by the time that alternative electrolysis approaches will gain better understanding, large electrolyzers will be already commissioned and integrated within chemical plants.…”

TaOx electron transport layers for CO2 reduction Si photocathodes

“…40 We thus conceptualized a system where ocean water, source of preconcentrated CO2, circulates through photoelectrochemical systems, and CO2 is converted into a stream of ethylene, carbon monoxide, methane, and hydrogen, being a useful input to various chemical manufacturing processes. 41 Such a system would require a minimum input of renewable electricity sourced from solar panels or windmills, as a significant amount of energy is being supplied via direct sunlight irradiation.…”