Journal of Environmental Chemical Engineering, volume 9, issue 6, pages 106711

Green approach for low-energy direct synthesis of anhydrite from industrial wastes of lime mud and spent sulfuric acid

Publication typeJournal Article
Publication date2021-12-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor7.7
ISSN22133437
Process Chemistry and Technology
Pollution
Waste Management and Disposal
Chemical Engineering (miscellaneous)
Abstract
Millions of tons of hazardous spent sulfuric acid and lime mud from water treatment facilities are produced per year. A green approach for the synthetic gypsum and anhydrite derived from such industrial wastes was proposed. It was found that direct structural controlled synthesis of anhydrite can be performed at usual conditions for synthesis of gypsum: 55 °C and atmospheric pressure. High-quality gypsum can be obtained at room temperature. The results obtained were confirmed by XRD, SEM, TEM, DTA, thermochemical and thermodynamics calculations. It was shown by a number of indicators that such approach is advantageous from technological, environmental and economic point of view. The filtrate formed during the synthesis contains sulfur, calcium, magnesium, sodium and potassium and can be used as a complex fertilizer. The results of bioindication when growing oil radish showed a double increase in the length of the main root when using a neutralized filtrate. • Anhydrite derived from spent sulfuric acid and lime slag were obtained. • Direct synthesis of anhydrite was obtained under 55 °C and atmospheric pressure. • Synthesis beneficial from technological, environmental and economic point of view. • Filtrate can be used as complex (S, Ca, Mg, Na, K) fertilizer.

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GOST Copy
Romanovski V. et al. Green approach for low-energy direct synthesis of anhydrite from industrial wastes of lime mud and spent sulfuric acid // Journal of Environmental Chemical Engineering. 2021. Vol. 9. No. 6. p. 106711.
GOST all authors (up to 50) Copy
Romanovski V., Klyndyuk A. I., Kamarou M. Green approach for low-energy direct synthesis of anhydrite from industrial wastes of lime mud and spent sulfuric acid // Journal of Environmental Chemical Engineering. 2021. Vol. 9. No. 6. p. 106711.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/j.jece.2021.106711
UR - https://doi.org/10.1016%2Fj.jece.2021.106711
TI - Green approach for low-energy direct synthesis of anhydrite from industrial wastes of lime mud and spent sulfuric acid
T2 - Journal of Environmental Chemical Engineering
AU - Romanovski, Valentin
AU - Klyndyuk, Andrei I
AU - Kamarou, Maksim
PY - 2021
DA - 2021/12/01 00:00:00
PB - Elsevier
SP - 106711
IS - 6
VL - 9
SN - 2213-3437
ER -
BibTex |
Cite this
BibTex Copy
@article{2021_Romanovski,
author = {Valentin Romanovski and Andrei I Klyndyuk and Maksim Kamarou},
title = {Green approach for low-energy direct synthesis of anhydrite from industrial wastes of lime mud and spent sulfuric acid},
journal = {Journal of Environmental Chemical Engineering},
year = {2021},
volume = {9},
publisher = {Elsevier},
month = {dec},
url = {https://doi.org/10.1016%2Fj.jece.2021.106711},
number = {6},
pages = {106711},
doi = {10.1016/j.jece.2021.106711}
}
MLA
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MLA Copy
Romanovski, Valentin, et al. “Green approach for low-energy direct synthesis of anhydrite from industrial wastes of lime mud and spent sulfuric acid.” Journal of Environmental Chemical Engineering, vol. 9, no. 6, Dec. 2021, p. 106711. https://doi.org/10.1016%2Fj.jece.2021.106711.
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