2022
DOI: 10.1002/jctb.7287
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Synthesis of robust insoluble anhydrite whiskers from desulphurization gypsum containing organic matter via improved hydrothermal‐calcination process for the removal of lead and zinc ions

Abstract: Background: An improved hydrothermal-calcination method was used to convert desulphurization gypsum containing organic matter (OM-gypsum) to insoluble anhydrite (II-CaSO 4 ) whiskers, where OM-gypsum was directly transformed to soluble anhydrite (γ-CaSO 4 ) whiskers via the hydrothermal method followed by calcination. The synthesized II-CaSO 4 whiskers were applied for the removal of lead ion (Pb(II)) and zinc ion (Zn(II)).Results: The synthesized II-CaSO 4 whiskers possessed a smooth surface, large aspect rat… Show more

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