Gypsum flocculation experiment in river Paimionjoki, Finland, 2022
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| Formato: | Dataset Open Access |
| Lenguaje: | en |
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PANGAEA
2025
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| _version_ | 1867171378103320576 |
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| author | Elovaara, Samu Zhao, Lingbin Asmala, Eero Kaartokallio, Hermanni Thomas, David Neville |
| author_facet | Elovaara, Samu Zhao, Lingbin Asmala, Eero Kaartokallio, Hermanni Thomas, David Neville |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | A laboratory experiment was conducted to investigate gypsum induced flocculation of dissolved organic matter in a boreal river Paimionjoki in south-western Finland in April, May, June and August 2022. The purpose was to investigate particulate matter formation caused by gypsum induced-flocculation and changes in the characteristics and bioavailability of the dissolved organic matter pool. The experiment included water sampling and measurements close to the estuary (doi:10.1594/PANGAEA.967417 and doi:10.1594/PANGAEA.967427), a flocculation experiment in the laboratory (doi:10.1594/PANGAEA.967423), an ultrafiltration of the water generated during the flocculation experiment (doi:10.1594/PANGAEA.967424) and a bioassay incubation using the water generated during the flocculation experiment (doi:10.1594/PANGAEA.967426). The flocculation experiment was conducted as a jar experiment using Velp Scientifica FC6S flocculator (1 h at 60 RPM). Two treatments were used in the experiment, a gypsum treatment where calcium sulfate (14.8 mmol/l, final concentration 1.48 mmol/l) was added to the samples and a control treatment where ultrapure water was added instead. Water sample collection and sensor measurements were conducted immediately below water surface. All experiments were conducted in 10 C. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_967477 |
| institution | PANGAEA |
| language | en |
| publishDate | 2025 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Gypsum flocculation experiment in river Paimionjoki, Finland, 2022 Elovaara, Samu Zhao, Lingbin Asmala, Eero Kaartokallio, Hermanni Thomas, David Neville biogeochemistry; calcium; CDOM; river A laboratory experiment was conducted to investigate gypsum induced flocculation of dissolved organic matter in a boreal river Paimionjoki in south-western Finland in April, May, June and August 2022. The purpose was to investigate particulate matter formation caused by gypsum induced-flocculation and changes in the characteristics and bioavailability of the dissolved organic matter pool. The experiment included water sampling and measurements close to the estuary (doi:10.1594/PANGAEA.967417 and doi:10.1594/PANGAEA.967427), a flocculation experiment in the laboratory (doi:10.1594/PANGAEA.967423), an ultrafiltration of the water generated during the flocculation experiment (doi:10.1594/PANGAEA.967424) and a bioassay incubation using the water generated during the flocculation experiment (doi:10.1594/PANGAEA.967426). The flocculation experiment was conducted as a jar experiment using Velp Scientifica FC6S flocculator (1 h at 60 RPM). Two treatments were used in the experiment, a gypsum treatment where calcium sulfate (14.8 mmol/l, final concentration 1.48 mmol/l) was added to the samples and a control treatment where ultrapure water was added instead. Water sample collection and sensor measurements were conducted immediately below water surface. All experiments were conducted in 10 C. |
| title | Gypsum flocculation experiment in river Paimionjoki, Finland, 2022 |
| topic | biogeochemistry; calcium; CDOM; river |
| url | https://doi.org/10.1594/PANGAEA.967477 |