Articles | Volume 20, issue 14
Research article
20 Jul 2023
Research article |  | 20 Jul 2023

Estuarine flocculation dynamics of organic carbon and metals from boreal acid sulfate soils

Joonas J. Virtasalo, Peter Österholm, and Eero Asmala


Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on bg-2023-53', Anonymous Referee #1, 19 Apr 2023
    • AC1: 'Reply on RC1', Joonas Virtasalo, 29 Apr 2023
  • RC2: 'Comment on bg-2023-53', Anonymous Referee #2, 20 Apr 2023
    • AC2: 'Reply on RC2', Joonas Virtasalo, 29 Apr 2023

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Publish subject to minor revisions (review by editor) (15 May 2023) by Yuan Shen
AR by Joonas Virtasalo on behalf of the Authors (26 May 2023)  Author's response   Author's tracked changes   Manuscript 
ED: Publish subject to technical corrections (02 Jun 2023) by Yuan Shen
AR by Joonas Virtasalo on behalf of the Authors (08 Jun 2023)  Manuscript 
Short summary
We mixed acidic metal-rich river water from acid sulfate soils and seawater in the laboratory to study the flocculation of dissolved metals and organic matter in estuaries. Al and Fe flocculated already at a salinity of 0–2 to large organic flocs (>80 µm size). Precipitation of Al and Fe hydroxide flocculi (median size 11 µm) began when pH exceeded ca. 5.5. Mn transferred weakly to Mn hydroxides and Co to the flocs. Up to 50 % of Cu was associated with the flocs, irrespective of seawater mixing.
Final-revised paper