Biochar Capacity to Mitigate Acidity and Adsorb Metals—Laboratory Tests for Acid Sulfate Soil Drainage Water

Show simple item record Kinnunen, Niko Laurén, Annamari (Ari) Pumpanen, Jukka Nieminen, Tiina M. Palviainen, Marjo 2021-11-09T12:37:01Z 2021-11-09T12:37:01Z 2021-11-03
dc.identifier.citation Kinnunen , N , Laurén , A , Pumpanen , J , Nieminen , T M & Palviainen , M 2021 , ' Biochar Capacity to Mitigate Acidity and Adsorb Metals—Laboratory Tests for Acid Sulfate Soil Drainage Water ' , Water, Air and Soil Pollution , vol. 232 , 464 .
dc.identifier.other PURE: 170045815
dc.identifier.other PURE UUID: 5de5e4ca-3347-4844-840a-bbab3d6798a5
dc.identifier.other ORCID: /0000-0001-9963-4748/work/102892275
dc.identifier.other WOS: 000714372000003
dc.description.abstract A 96-h laboratory experiment was conducted to assess the potential of biochar as a water protection tool for acid sulfate soil runoff. Acid sulfate soils pose a risk to water bodies due to acid, metal-rich runoff, especially in drained peatland forests. New water protection methods, such as adsorption with biochar, are needed. We investigated the capability of spruce and birch biochar to adsorb metals and reduce acidity in the water. Water from an acid sulfate site was stirred with biochar, biochar with lime, and biochar with ash. We determined water Al, S, Fe, Cu, Co, Cd, Ni, and Zn concentrations periodically, as well as pH and total organic carbon at the beginning and the end of the experiment. The studied substances are considered the most abundant and environmentally harmful elements in the acid sulfate soils in Finland. Biochar surface characteristics were analyzed with FTIR spectroscopy. Concentration changes were used to parametrize adsorption kinetics models. Biochar adsorbed metals and increased pH, but lime and ash additives did not always improve the adsorption. Spruce biochar and ash addition had generally higher adsorption than birch biochar and lime addition. The adsorption was dominated by Al and Fe at lower pH, while increasing pH improved the adsorption of Cd and Zn. The results show that biochar can increase the water pH, as well as adsorb Al, Fe, Co, Cd, Ni, and Zn. Further work could include an actual-scale biochar reactor in a laboratory and field conditions. en
dc.format.extent 14
dc.language.iso eng
dc.relation.ispartof Water, Air and Soil Pollution
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 1181 Ecology, evolutionary biology
dc.subject 4112 Forestry
dc.subject Biochar
dc.subject Acidity
dc.subject Adsorption
dc.subject Metal
dc.subject Water quality
dc.subject HEAVY-METALS
dc.subject ADSORPTION
dc.subject IMPACT
dc.subject SEDIMENTS
dc.subject FORESTRY
dc.subject REMOVAL
dc.subject CARBON
dc.subject STRAW
dc.title Biochar Capacity to Mitigate Acidity and Adsorb Metals—Laboratory Tests for Acid Sulfate Soil Drainage Water en
dc.type Article
dc.contributor.organization Department of Forest Sciences
dc.contributor.organization Forest Soil Science and Biogeochemistry
dc.contributor.organization Ecosystem processes (INAR Forest Sciences)
dc.contributor.organization Forest Ecology and Management
dc.description.reviewstatus Peer reviewed
dc.relation.issn 0049-6979
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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