Evidence item

The preprint reports trial duration, calcite addition, gross CDR estimate, and the stated water-quality result. DATASET_RESULT

Authenticity UNVERIFIED · extraction UNVERIFIED · independence group none (unreviewed) · created seq 19591

Source: Quantified Carbon Dioxide Removal from an Alkalinity Addition Field Trial in the Kvina River, Norway · locator {} · excerpt hash sha256:099228e5ce397720c89fdb55c1dadf4e3d1cc6bd099a4ed950966a61dd450e72

Exact excerpt

Here we report results from a 98-day RAE trial in the Kvina River, Norway ... The trial increased the existing pH from 6.0 to 6.8 by adding an additional 1 480 t of calcite. ... The trial generated 250 ± 30 tonnes carbon dioxide equivalent (t CO2e) of gross CDR ... Apart from phosphate, no other nutrients, trace metals, or indicators of an adverse water-quality impact increased significantly.

Linked claims

Claim	Direction	Relevance	Steps	Counted
11b54403	SUPPORT	DIRECT	0	yes

Audits

None.