| Title |
Modelling assessment of resource competition for renewable basic chemicals and the effect of recycling |
| ID_Doc |
13419 |
| Authors |
Musonda, F; Millinger, M; Thrän, D |
| Title |
Modelling assessment of resource competition for renewable basic chemicals and the effect of recycling |
| Year |
2024 |
| Published |
Global Change Biology Bioenergy, 16, 4 |
| DOI |
10.1111/gcbb.13133 |
| Abstract |
This work assesses pathways towards a net-zero greenhouse gas (GHG) emissions chemical industry sector in Germany until 2050, focusing on the ammonia, methanol, ethylene and adipic acid subsectors and the effect of the recycling of C embedded in chemical end products on the GHG abatement cost and primary resource demand. This was done using a bottom-up mathematical optimization model, including the energy sectors and the chemicals sector, with electricity and biobased options considered. Results show that net-zero GHG emissions for the considered chemicals in 2050 are attainable at a marginal cost of 640-900 /tCO(2)-eq, even with 26%-36% of demand being satisfied by fossil production routes. This is possible because renewable organic chemicals can act as carbon sinks if, at their end of life, C is permanently stored via landfilling or passed on to the next value chain via recycling. Nonetheless, considering the cost implications, the practical deployment of renewable chemicals is a challenge. The considered renewable chemicals cost 1.3-8 times more than their fossil counterparts, resulting in a marginal CO2 price of 480 /tCO(2)-eq when all primary resources (energy crops, forest residues and renewable electricity) are considered, or 810 /tCO(2)-eq when the availability of arable land is restricted. In the transition to net-zero emissions for the chemicals under study, a circular economy is important not only for reducing demand for primary resources as is typically the case but also reduces GHG abatement costs by 13%-24% through carbon capture and utilization effects. |
| Author Keywords |
biochemicals; biogenic CO2; GHG abatement; recycling; renewable chemicals; renewable hydrogen; sector coupling |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001180348800001 |
| WoS Category |
Agronomy; Biotechnology & Applied Microbiology; Energy & Fuels |
| Research Area |
Agriculture; Biotechnology & Applied Microbiology; Energy & Fuels |
| PDF |
https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/gcbb.13133
|