A Natural Biomass-Sediment as a Hybrid Organic-Mineral Sorbent for the Removal of Zinc in Aqueous Systems

Khiari, Nouha; Sdiri, Ali; Chemingui, Hajer; Khadhar, Samia

doi:10.1007/s11270-023-06620-1

Water Air Soil Pollut

2023

DOI: 10.1007/s11270-023-06620-1

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A Natural Biomass-Sediment as a Hybrid Organic-Mineral Sorbent for the Removal of Zinc in Aqueous Systems

Nouha Khiari,

Ali Sdiri,

Hajer Chemingui

et al.

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2024

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Cited by 2 publications

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Temperature and pH Affect the Sorption and Transformation of Dissolved Organic Carbon by Birnessite

Oyetunji,

Lamb,

Jones

et al. 2024

ACS Earth Space Chem.

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Soil mineralogy plays a vital role in carbon storage. Birnessite is a widely occurring manganese oxide mineral. Despite its widespread occurrence, studies of the interactions between natural soil organic carbon and manganese oxide minerals are rare. This study investigated the influence of triclinic birnessite on the transformation of vermicompost-derived dissolved organic carbon (DOC) at different pHs (4 and 8) and temperatures (25 and 50 °C). Enhanced adsorption and transformation of DOC, particularly at pH 4 and 50 °C, were observed. The use of SUVA 254 and fluorescence spectroscopy showed that DOC sorption caused an increase in carbon aromaticity, with the highest degree observed at pH 4 at 50 °C. In particular, X-ray photoelectron spectroscopy and near-edge X-ray absorption fine structure C 1s characterization showed an 8-fold increase in aromaticity at 50 °C compared to the unreacted DOC, with esterification and/or etherification reactions also occurring at pH 4. The impact of DOC sorption on birnessite stability and transformations was also assessed via X-ray absorption near-edge structure spectroscopy, which revealed that reacted and unreacted triclinic birnessite showed modest changes to Mn II, III, and IV. Manganese K-edge extended X-ray absorption fine structure spectroscopy showed the increased formation of hexagonal birnessite at pH 4, the formation of manganite at pH 4 and 8, 50 °C, and the formation of up to 6% ramsdellite at pH 8, 25 °C. This study provides new insights into the role of birnessite in soil carbon storage and manganese mineral transformations under environmentally relevant conditions.

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Temperature and pH Affect the Sorption and Transformation of Dissolved Organic Carbon by Birnessite

Oyetunji,

Lamb,

Jones

et al. 2024

ACS Earth Space Chem.

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Fabrication of a superhydrophobic cotton@LDH composite for effective oil adsorption

Nie,

Xie,

Rui

et al. 2024

New J. Chem.

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A Natural Biomass-Sediment as a Hybrid Organic-Mineral Sorbent for the Removal of Zinc in Aqueous Systems

Cited by 2 publications

References 51 publications

Temperature and pH Affect the Sorption and Transformation of Dissolved Organic Carbon by Birnessite

Temperature and pH Affect the Sorption and Transformation of Dissolved Organic Carbon by Birnessite

Fabrication of a superhydrophobic cotton@LDH composite for effective oil adsorption

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