Effect of maleic acid and pH on the preparation of α-calcium sulfate hemihydrate from phosphogypsum in Mg(NO3)2 solution
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Material Cycles and Waste Management"
DOI: 10.1007/s10163-021-01304-6
Abstract: Phosphogypsum (PG) is a by-product of the wet-process phosphoric acid process, which causes serious environmental issues. In this work, PG was taken as raw material to prepare α-calcium sulfate hemihydrate (α-CSH) at atmospheric pressure using… read more here.
Keywords: maleic acid; calcium sulfate; solution; no3 solution ... See more keywords
Effects of phosphorus impurities on the preparation of α-calcium sulfate hemihydrate from waste phosphogypsum with the salt solution method under atmospheric pressure
Sign Up to like & getrecommendations! Published in 2019 at "CrystEngComm"
DOI: 10.1039/c9ce00140a
Abstract: Impurity is an important factor that determines the crystallization process of α-calcium sulfate hemihydrate (α-CSH), but the effects of phosphorus impurities in waste phosphogypsum on the α-CSH prepared using the salt solution method are still… read more here.
Keywords: waste phosphogypsum; effects phosphorus; salt solution; calcium sulfate ... See more keywords
Mussel-inspired dynamic facet-selective capping approach to highly uniform α-calcium sulfate hemihydrate crystals
Sign Up to like & getrecommendations! Published in 2023 at "RSC Advances"
DOI: 10.1039/d3ra00835e
Abstract: We report herein a dynamic facet-selective capping (dFSC) strategy for α-calcium sulfate hemihydrate crystal growth from dihydrate gypsum in the presence of a catechol-derived PEI capping agent (DPA-PEI) with inspiration by the biomineralization process of… read more here.
Keywords: selective capping; calcium sulfate; dynamic facet; facet selective ... See more keywords
Hierarchical synchrotron diffraction and imaging study of the calcium sulfate hemihydrate–gypsum transformation
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Applied Crystallography"
DOI: 10.1107/s1600576723002881
Abstract: A combined approach of scanning 3D X-ray diffraction and phase contrast tomography has been used to study the hydration of calcium sulfate hemihydrate to form gypsum. This approach was found to be a powerful tool… read more here.
Keywords: diffraction; calcium sulfate; hemihydrate; sulfate hemihydrate ... See more keywords
Experimental Study and Mechanism Analysis of Preparation of α-Calcium Sulfate Hemihydrate from FGD Gypsum with Dynamic Method
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DOI: 10.3390/ma15093382
Abstract: Flue-gas desulphurization (FGD) gypsum is a highly prevalent industrial by-product worldwide, which can be an excellent alternative to natural gypsum due to its high content of CaSO4·2H2O. The preparation of α-calcium sulfate hemihydrate is a… read more here.
Keywords: fgd; sulfate hemihydrate; fgd gypsum; calcium sulfate ... See more keywords