Dredging and deposition of metal sulfide rich river sediments results in rapid conversion to acid sulfate soil materials

Authors:

Anders Johnson, EvaHögfors-Rönnholm, Sten Engblom, Peter Österholm, Mats Åström, Mark Dopson

Highlights

•Baltic Sea coastal sediments are rich in metal sulfides.

•Dredging of sediments exposes metal sulfides to oxygen.

•Oxidation of metal sulfide rich estuary sediments releases metals and acid.

•Metal sulfide oxidation coincides with increase of extremely acidophilic bacteria.

•Liming poorly neutralized acid generated from oxidized dredge sediments.

Read the paper here: https://www.sciencedirect.com/science/article/pii/S0048969721069400