Cation concentrations during benthic weathering of calcite and dunite in benthocosm experiments

Description: Enhanced benthic weathering has been proposed to serve as a efficient negative emission strategy. The precise weatherig behaviour of calcite and dunite was investigated in leng-term experiments in benthocosms. These experiments were conducted between Sept. 2022 and Sept. 2023 ashore at the Kiel Fjord. The latter are large plastic containers (~0.8 m²) that are partly filled with sediments, with constant flow-through of Baltic Sea bottom water. The sediments, obtained from Boknis Eck in the Eckernförde Bay in March 2022, were amended with calcite and dunite in triplicate (22 mol/m² equivalent) . Three additional benthocosms were left unamended to serve as controls. The used materials were obtained from Sibelco (dunite) and from the german Lime Stone Association (calcite). Samples were obtained using benthic chambers (chamber volume of 400 ml) that were placed on the sediment for three hours. Samples were taken at the beginning (_in) and at the end of the deployment (_out). All samples were filtered through a 0.2 µm cellulose membrane filter and refrigerated in 25 ml ZinsserTM scintillation vials. Acidified sub-samples (30 μl suprapure HNO3- + 3 ml sample) were prepared for analyses of major and trace elements (Si, Na, K, Li, B, Mg, Ca, Sr, Mn, Ni and Fe) by inductively coupled plasma optical emission spectroscopy (ICP-OES, Varian 720-ES).

Global identifier:

Doi(
    "10.1594/PANGAEA.974041",
)

Measurements {
    domain: Unspecified,
    station: None,
    measured_variables: [
        "Type of study",
        "Sample type",
        "Treatment",
        "Sampling date/time, experiment",
        "Sample ID",
        "Boron",
        "Boron, standard deviation",
        "Manganese",
        "Manganese, standard deviation",
        "Calcium",
        "Calcium, standard deviation",
        "Iron",
        "Iron, standard deviation",
        "Sodium",
        "Sodium, standard deviation",
        "Magnesium",
        "Magnesium, standard deviation",
        "Strontium",
        "Strontium, standard deviation",
        "Silicon",
        "Silicon, standard deviation",
        "Barium",
        "Barium, standard deviation",
        "Lithium",
        "Lithium, standard deviation",
        "Potassium",
        "Potassium, standard deviation",
    ],
    methods: [
        "ICP-OES, VARIAN 720-ES",
        "Relative standard deviation",
        "ICP-OES, VARIAN 720-ES",
        "Relative standard deviation",
        "ICP-OES, VARIAN 720-ES",
        "Relative standard deviation",
        "ICP-OES, VARIAN 720-ES",
        "Relative standard deviation",
        "ICP-OES, VARIAN 720-ES",
        "Relative standard deviation",
        "ICP-OES, VARIAN 720-ES",
        "Relative standard deviation",
        "ICP-OES, VARIAN 720-ES",
        "Relative standard deviation",
        "ICP-OES, VARIAN 720-ES",
        "Relative standard deviation",
        "ICP-OES, VARIAN 720-ES",
        "Relative standard deviation",
        "ICP-OES, VARIAN 720-ES",
        "Relative standard deviation",
        "ICP-OES, VARIAN 720-ES",
        "Relative standard deviation",
    ],
}

Dataset

Origins: /Wissenschaft/PANGAEA

Tags: Kunststoff ? Kalium ? Lithium ? Magnesium ? Strontium ? Bor ? Zellulose ? Silizium ? Bodenwasser ? Membranfiltration ? Studie ? Sediment ? Ostsee ? CO2-Entnahme ? Experiment ? benthocosm ? calcite weathering ? enhanced weathering ?

Region: Boknis

Bounding boxes: 10.04167° .. 10.14996° x 54.32975° .. 54.51667° 9.85837° .. 9.85837° x 54.60418° .. 54.60418°

License: cc-by/4.0

Language: Englisch/English

Organisations

• Federal Ministry of Education and Research (Geldgeber*in) [1]
• GEOMAR - Helmholtz Centre for Ocean Research Kiel (Leitung) [1]
• GEOMAR - Helmholtz Centre for Ocean Research Kiel (Mitwirkende) [1]
• PANGAEA (Herausgeber*in)
• Utrecht University (Mitwirkende) [1]

Persons

• Habeeb Thanveer Kalapurakkal (Beitragende*r) [1] [ORCID]
• Klaus Wallmann (Beitragende*r) [1] [ORCID]
• Mark Schmidt (Beitragende*r) [1] [ORCID]
• Michael Fuhr (Beitragende*r) [1] [ORCID]
• Mirjam Perner (Beitragende*r) [1] [ORCID]
• Sonja Geilert (Beitragende*r) [1] [ORCID]
• Timo Spiegel (Beitragende*r) [1] [ORCID]

Issued: 2025-02-10

Modified: 2025-02-10

Time ranges: 2022-02-22 - 2023-09-06

Resources

• https://doi.pangaea.de/10.1594/PANGAEA.974041?format=textfile (TSV)

Status

Aktiv

Quality score

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• Findability: 0.67

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