CO₂-removal News

Public Consultation of Enhanced Rock Weathering (ERW) in Soil Methodology

by; Consultation period open until 17.10.2022

„ present their first ERW carbon crediting methodology for public consultation. […] The working group has defined safeguards and quantification approaches aligned with the latest science. This methodology ensures little to no environmental impact, which is critical to increasing public acceptance of ERW. It sets strict thresholds for contaminant levels of the ground rock in accordance with the EU regulation for inorganic soil improvers and require projects to perform laboratory tests of soil samples to establish baselines. In acidic conditions, ERW has the co-benefit of restoring nutrient depleted soils.“


Midwest Regional Carbon Conversion/Utilization Procurement Grant Workshop

October 18, 2022 – 9:00 am to 4:45 pm CDT, virtually or in-person (Minneapolis)

DOE-FECM will establish a demonstration grant program within the Carbon Conversion/Utilization Program to support eligible applicants that procure commercial and industrial products derived from anthropogenic carbon oxides. Therefore, the Carbon Conversion/Utilization Program, with the assistance of the United States Energy Association (USEA), will conduct a series of workshops (both virtual and in-person) with relevant stakeholders, e.g., product manufacturers, eligible entities, or their representative national organizations (e.g., United States Conference of Mayors, etc.) to solicit input and ideas on challenges and opportunities for a potential grant program. USEA invites to the upcoming regional workshops, the last of which will be held in the Twin Cities in Minnesota. 


Brandl et al. (2022): A century of re-exploring CO2 capture solvents

Patrick Brandl, Mai Bui, Jason P. Hallett, Niall Mac Dowell IN: International Journal of Greenhouse Gas Control 120, 103771,

In this contribution, the authors present a thought-experiment that uses a hypothetical solvent to identify the limit of available cost reductions to 65% over current performance benchmarks, reaching a cost limit of $26/tonCO2 for gas-power.


Why $100 per ton is the carbon removal industry’s holy grail

by Michelle Ma on

„Carbon dioxide removal service buyers and sellers are focused on one metric: $100 per ton. It’s one of Frontier’s stated criteria that the fund uses to evaluate its advance purchases. In a survey of the long-duration carbon removal community, CarbonPlan found that stakeholders are focused on the $100 benchmark. The Department of Energy even announced that it would be investing in carbon removal research to bring the cost of the technology down to $100 per ton.“


Scown (2022): Prospects for carbon-negative biomanufacturing

Corinne D. Scown IN: Trends in Biotechnology, ISSN 0167-7799,

This review explores the magnitude of carbon removal achievable through biomanufacturing and discusses the likely fate of carbon in a range of target molecules. Solvents, cleaning agents, or food and pharmaceutical additives will likely re-release their carbon as CO2 at the end of their functional lives, while carbon incorporated into non-compostable polymers can result in long-term sequestration.


Bellamy (2022): Mapping public appraisals of carbon dioxide removal

Rob Bellamy IN: Global Environmental Change Vol. 76, 102593,

This paper develops a novel, nationally representative method for the multi-criteria appraisal of five policy relevant CDR methods – plus an option not to pursue CDR at all – by members of the British public (n = 2,111). The results show that the public supports the inclusion of CDR in UK climate policy. CDR methods often characterised as ‘natural’ or ‘nature-based’ are appraised more highly than ‘technological’ ones, in the descending order: habitat restoration, afforestation, wood in construction, bioenergy with carbon capture and storage, and direct air carbon capture and storage.


Kemp et al. (2022): Detection and quantification of low levels of carbonate mineral species using thermogravimetric-mass spectrometry to validate CO2 drawdown via enhanced rock weathering

Simon J. Kemp, Amy L. Lewis, Jeremy C. Rushton IN: Applied Geochemistry Vol. 146, 105465,

The study of six different basaltic materials used in ERW experiments, from widely different geological and geographical settings, suggests that thermogravimetric analysis (TGA) weight losses can provide useful information on the low-levels of carbonate minerals present. Furthermore, carbonate mineral identification and quantification derived from the accompanying MS-detected CO2 evolution and corroborated by SEM-EDS mapping, is capable of detecting even lower concentrations with detection limits below 100 ppm for calcite. TGA-MS therefore offers significant advantages over the traditionally-applied inorganic carbon analyses.


Call for input 2022 – Activities involving removals under the Article 6.4 Mechanism of the Paris Agreement

The call for inputs from stakeholders is open from 27 September to 11 October 2022 (24:00 GMT) 

The Article 6.4 Mechanism Supervisory Body (Supervisory Body) is seeking inputs on the documents entitled: 

  • Draft recommendation: Requirements for the development and assessment of mechanism methodologies pertaining to activities involving removals (as Annex 5 to the SB002 annotated agenda
  • Information note: Removal activities under the Article 6.4 mechanism (as Annex 6 to the SB002 annotated agenda
  • In-meeting working document on „Recommendations for activities involving removals under the Article 6.4 mechanism“ (SB002 in-meeting working document

Stakeholders are invited to provide their inputs on the above documents (annex 5, annex 6 and in-meeting document). The inputs received will be publicly available and considered by the Supervisory Body. 


Pioneering the first Mass Timber Carbon Removal Methodology

„The Timber Finance Initiative, Green Canopy NODE, South Pole and Gordian Knot Strategies have created a Working Group of issue area experts to develop a globally applicable carbon credit methodology for mass timber construction. […] They are developing a globally applicable carbon credit methodology for mass timber construction in Verra’s Verified Carbon Standard (VCS) GHG crediting Program. […] Verra will serve as an independent standard-setter for the methodology. A rigorous carbon methodology will help realize the value of stored carbon in mass timber construction and further clear a pathway to scale mass timber as a climate-smart building material. The final methodology will be developed by the Timber Finance Initiative and South Pole. The final methodology is anticipated in early 2023.“


Denmark, Flanders and Belgium sign groundbreaking arrangement on cross-border transportation of CO2 for geological storage

by Press office of the Danish Ministry of Climate, Energy and Utilities

„Denmark, Flanders and Belgium have concluded a specific arrangement, which makes it possible to transport CO2 between the two countries with the purpose of permanent geological storage. They are the first countries in the world to enter into such a bilateral arrangement.“