18.10.2021

# New Publications

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Swoboda, Philipp; et al. (2021): Remineralizing soils? The agricultural usage of silicate rock powders: A review

Swoboda, Philipp; Döring, Thomas F.; Hamer, Martin (2021): Remineralizing soils? The agricultural usage of silicate rock powders: A review. In Science of the Total Environment, p. 150976. DOI: 10.1016/j.scitotenv.2021.150976.

"Soil nutrient depletion threatens global food security and has been seriously underestimated for potassium (K) and several micronutrients. This is particularly the case for highly weathered soils in tropical countries, where classical soluble fertilizers are often not affordable or not accessible. One way to replenish macro- and micronutrients are ground silicate rock powders (SRPs). Rock forming silicate minerals contain most nutrients essential for higher plants, yet slow and inconsistent weathering rates have restricted their use in the past. Recent findings, however, challenge past agronomic objections which insufficiently addressed the factorial complexity of the weathering process. This review therefore first presents a framework with the most relevant factors for the weathering of SRPs through which several outcomes of prior studies can be explained."

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18.10.2021

# Media

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ReCharge: ‘We will produce carbon-negative green hydrogen at a third of the price of standard renewable H2’

"A new international joint venture (JV) is to build a $100m-plus project in Australia that will produce carbon-negative green hydrogen and ammonia from woody waste biomass using a “unique” gasification process."

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18.10.2021

# New Publications

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Fuhrman, Jay; et al. (2021): The role of direct air capture and negative emissions technologies in the Shared Socioeconomic Pathways towards +1.5˚C and +2˚C future

Fuhrman, Jay; Clarens, Andres; Calvin, Katherine V.; Doney, Scott C.; Edmonds, James A.; O'Rourke, Patrick et al. (2021): The role of direct air capture and negative emissions technologies in the Shared Socioeconomic Pathways towards +1.5˚C and +2˚C futures. In Environ. Res. Lett. DOI: 10.1088/1748-9326/ac2db0.

"The development of the Shared Socioeconomic Pathways (SSPs) and associated integrated assessment modeling (IAM) exercises did not include direct air capture with carbon storage (DACCS) in their scenarios. Recent progress in DACCS commercialization suggests it could be a viable means of removing CO2 from the atmosphere with far lower land intensity than bioenergy with carbon capture or afforestation but with a higher energy demands. In addition, several forms of DACCS are in development, with different costs and energy demands, as well as potential for future efficiency improvements. Here, we use the Global Change Analysis Model (GCAM) to understand the role of DACCS across all 5 SSPs for the below 2˚C and below 1.5˚C end-of-century warming goals. We assess DACCS deployment relative to other carbon capture methods, and its side effects for global energy, water, land systems. We find that DACCS could play a 10-40 Gt-CO2-yr-1 role in many of these scenarios, particularly those with delayed climate policy and or higher challenges to emissions mitigation. Our "sustainable development" scenarios, consistent with SSP1, have far smaller deployments of DACCS and other negative emissions owing to immediate climate policy onset, greater ease of "conventional mitigation" and tighter constraints on future negative emissions."

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10.10.2021

# New Publications

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Haque, Fatima; et al. (2021): Urban Farming with Enhanced Rock Weathering As a Prospective Climate Stabilization Wedge

Haque, Fatima; Santos, Rafael M.; Chiang, Yi Wai (2021): Urban Farming with Enhanced Rock Weathering As a Prospective Climate Stabilization Wedge. In Environmental science & technology. DOI: 10.1021/acs.est.1c04111.

"With no single carbon capture and sequestration solution able to limit the global temperature rise to 1.5–2.0 °C by 2100, additional climate stabilization measures are needed to complement current mitigation approaches. Urban farming presents an easy-to-adopt pathway toward carbon neutrality, unlocking extensive urban surface areas that can be leveraged to grow food while sequestering CO2. Urban farming involves extensive surface areas, such as roofs, balconies, and vertical spaces, allowing for soil presence and atmospheric carbon sequestration through air-to-soil contact. In this viewpoint we also advocate the incorporation of enhanced rock weathering (ERW) into urban farming, providing a further opportunity for this recognized negative emissions technology that is gaining momentum worldwide to gain greater utilization."

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08.10.2021

# Media

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Reuters: Made-from-CO2 concrete, lululemons and diamonds spark investor excitement

"What do diamonds, sunglasses, high-end lululemon sportswear and concrete have to do with climate change? They can all be made using carbon dioxide (CO2), locking up the planet warming gas. And tech startups behind these transformations are grabbing investor attention."

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08.10.2021

# Media

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Labiotech: Novo Nordisk Foundation Pumps €85M into Carbon Capture Research

"As pressure mounts to tackle climate change, the Danish Novo Nordisk Foundation has granted €84.7M to the world’s first research institution dedicated to capturing carbon dioxide from the air and harnessing the gas as a raw material."

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08.10.2021

# Media

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Gasworld: Shell to use BASF Sorbead tech for CCS

"Major player in the energy industry Shell is to incorporate catalyst expert BASF’s Sorbead Adsorption Technology into its carbon reduction plan following a collaborative partnership. The collaboration involved working together to study the use of the Sorbead technology for pre- and post-combustion carbon capture and storage (CCS) activities."

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08.10.2021

# Media

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Upstream: Australian government looks to 'turbocharge' development of carbon capture and storage hubs

"Canberra to provide a A$250 million injection towards developing CCUS hubs that could be operational before the end of the decade."

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08.10.2021

# Media

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Mirage: Emissions Reduction Fund to credit carbon capture and storage projects

"The Emissions Reduction Fund (ERF) will now credit eligible projects that capture and permanently store carbon underground.The Australian Government introduced the new carbon capture and storage (CCS) method following public consultation."

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07.10.2021

# New Publications

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Du, Yang; et al. (2021): Zero- and negative-emissions fossil-fired power plants using CO2 capture by conventional aqueous amines

Du, Yang; Gao, Tianyu; Rochelle, Gary T.; Bhown, Abhoyjit S. (2021): Zero- and negative-emissions fossil-fired power plants using CO2 capture by conventional aqueous amines. In International Journal of Greenhouse Gas Control 111, p. 103473. DOI: 10.1016/j.ijggc.2021.103473.

"This work investigated the technical and economic feasibility of achieving zero and negative CO2 emissions in both pulverized coal (PC) and natural gas combined cycle (NGCC) power plants, using conventional amine scrubbing with 30 wt% aqueous monoethanolamine. In this work, we refer to “zero emissions” when the amount of CO2 in the exhaust flue gas is equal to that in the intake combustion air, and “negative emissions” when the amount of CO2 in the exhaust flue gas is less that in the intake combustion air. Increasing CO2 capture from 90% to that at zero-emissions for fossil-fired power plants can reduce global CO2 emissions by up to ∼1 Gt/y for the current global power generation mix. Even higher CO2 capture leads to negative emissions of the power plant with part of the CO2 from the intake air removed along with the fossil-fuel derived CO2. With an absorber configuration including a simple solvent intercooler, both PC and NGCC power plants can achieve zero-emissions with a ∼5% and ∼13% increase in CO2 avoidance costs, compared with the costs at 90% CO2 capture. The larger cost penalty for NGCC was mainly due to a temperature bulge at the absorber top. Replacing the simple solvent intercooler with a pump-around intercooler was able to reduce this cost penalty to ∼8%. Further decarbonization of flue gases from zero-emissions to direct air capture (DAC)-level of negative emissions (∼100 ppmv of CO2 in exhaust gases) has incremental costs of over $1000/t CO2 avoided for both PC and NGCC."

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