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FGD Gypsum: TS = FGD GYPSUM: 2010–01-01 to 2023–05-08: 581: SCI-EXPANDED, SSCI, CPCI-S: 462: 455: Production of FGD Gypsum: TS=((FGD GYPSUM) AND (PRODUCTION)) ... Some of these elements are very harmful to the environment and need to be taken care of before the land disposal of FGDG. Another concern of FGDG is …
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results showed that the application of desulfurization gypsum could reduce the harm of salt and alkali in soil to the germination, emergence and growth of millet seeds. ... T3 and T4 were set up. The dosage of desulfurized gypsum was 0, 10, 20 and 30 t hm-2, respectively. Millet was planted by artificial ditching with a row spacing of 20 cm and ...
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Most earthen sites are located in open environments eroded by wind and rain, resulting in spalling and cracking caused by shrinkage due to constant water absorption and loss. Together, these issues seriously affect the stability of such sites. Gypsum–lime-modified soil offers relatively strong mechanical properties but poor water …
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Flue Gas Desulphurized Gypsum (FGDG) is a by-product generated by the thermal power industry to remove sulfur dioxide (SO 2) from flue gas emissions. This paper provides a comprehensive review of flue gas desulphurized (FGD) gypsum …
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The thermal instability of most mercury (Hg) species in flue gas desulfurization (FGD) gypsum may lead to the release of large amounts of Hg into the …
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The utilization of desulfurized building gypsum as raw material for gypsum-based self-leveling mortar (GSL) is limited by its low strength and poor water resistance. The objective of this study is to enhance comprehensive properties of GSL and prepare qualified desulfurized building gypsum-based self-leveling mortar that can be …
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Desulfurization gypsum has few harmful components. When used as a cement retarder, it can basically replace natural gypsum. ... Desulfurized gypsum contains partially unreacted CaCO 3 and partially soluble salts, such as potassium salts and sodium salts. The presence of these impurities promotes the hydration process of cement. Meanwhile, …
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Liu, S., Liu, W., Jiao, F., Qin, W., & Yang, C. (2021). Production and resource utilization of flue gas desulfurized gypsum in China - A review.
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The test takes the cementing system composed of ordinary Portland cement and desulfurized building gypsum as the research object, and the research is carried out based on the mechanism of the early strength agent that can accelerate the cement hydration reaction in the composite cementing system. In the experiment, the influence …
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AMA Style. Li F, Li H, Die J, Zhang Y, Li Y, Wang M, Cao Y, Zhang K, Tu J. Effect of Polyethylene-Grafted Maleic Anhydride on the Properties of Flue-Gas Desulfurized Gypsum/Epoxy Resin Composites.
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The GSLM benchmark mix ratio was determined as follows: 94% of desulfurization building gypsum, 6% of cement, 0.638% each of water reducer and …
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Many industrial processes and anthropogenic activities contaminate soil with harmful substances, including toxic metals. Arsenic (As), lead (Pb), and cadmium (Cd) are some of the most common inorganic soil contaminants. ... (Oriza sativa L.) growth and yield using desulfurized gypsum in the west of Songnen Plain, northeast China Geoderma, …
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Desulfurized ash from semi-dry flue gas desulfurization and α-hemihydrate gypsum were collected from Baotian New Building Materials Co.,Ltd. Their chemical components are shown in Table 1.Desulfurized ash contains about 21.33% hemihydrate calcium sulfite, 18.11% calcium carbonate, 28.55% dihydrate gypsum, 25.81% calcium …
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In order to protect national grain safety and ecological safety and develop a sustainable economy,it is important to improve alkaline land with desulfurized gypsum from coal fired power plants.Representative lightly alkalized soil,medium-alkalized soil and seriously alkalized soil in Xidatan of Ningxia Province were selected in the research and used in …
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Like natural gypsum, the application of flue gas desulfurization gypsum (FGDG) with irrigation provides economic and environmental value (Wang and Yang, 2018; Watts and Dick, 2014). FGDG is of low cost, because it is a side product of sulfur removal from fuel combustion in coal-fired power plants and does not require mining and …
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The influences of desulfurization gypsum on the properties of both Magnesium oxychloride cement (MOC) pastes and MOC abrasive tools were investigated in this study.
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Flue gas desulfurization gypsum (FGDG) is an effective soil amendment. However, some heavy metals present in FGDG may enter soil or groundwater due to …
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The system diagram of reducing gypsum in the multi- stage and multi-atmosphere fluidized beds. Diagrammatize: 1 raw material; 2 pelleter; 3 adhesion material; 4 drying process; 5 circulating fluidized bed heater; 6 cyclone separator; 7 J type valve; 8 circulating fluidized bed reactor; 9 tubular air preheater; 10 dust collector; 11 draft fan; 12 chimney; 13 air; …
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This study evaluated the effects of FGD gypsum on soil physical and chemical properties and heavy metal concentrations after 17 years. Established in 2001, the study site on the Tumochuan Plain of …
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XRD, SEM and elemental characterization of FGD gypsum. X-ray diffraction analysis revealed that the characteristic peaks at 2θ value of 11.8, 20.8 and 23.5 (Fig. 2a) of the FGD gypsum 1 suggested ...
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As the waste of coal-fired power plant, desulphurization gypsum is mainly composed of CaSO 3 and CaSO 4, which can replace Na+ in saline-alkali soil to improve saline-alkali soil.In order to study the effect of different dosage of desulfurization gypsum on the improvement of saline-alkali land, field experiments were carried out in Duiziliang …
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Calcium sulfate whiskers (CSWs) were synthesized using purified flue-gas desulfurization (FGD) gypsum as raw materials using a hydrothermal method, where the filtrate was recycled back to the reaction slurry. The study investigated the impact of pH and Cu2+ concentration in the reaction solution with or without reagent compensation. The …
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Adding gypsum and/or straw is a common practice for ameliorating saline-alkali soils. However, the effect of amendment on soil CO2 is poorly known. An incubation experiment was conducted for over ...
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DOI: 10.1016/j.envpol.2021.117799 Corpus ID: 236531280; Production and resource utilization of flue gas desulfurized gypsum in China - A review. @article{Liu2021ProductionAR, title={Production and resource utilization of flue gas desulfurized gypsum in China - A review.}, author={Sen Liu and Wei Liu and Fen Jiao …
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Using Portland cement for soil solidification has sustainability issues due to high energy-consumption and carbon emissions.An innovative approach suggests using titanium slag and flue gas desulfurized gypsum as substitutes for Portland cement for soil solidification. This study systematically evaluates the effects of titanium slag-flue gas …
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The accumulation of a large amount of flue gas desulfurized gypsum (FGDG) not only occupies valuable land resources, but also the harmful substances …
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A large amount of FGD gypsum is required to promote plant growth, although desulfurized flue gas with high boron and low levels of CaSO 3 is harmful to plant …
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Abstract. The past several years have witnessed great progress in utilization of industrial waste gypsum. Newly developed carbonation technology toward CaCO 3 preparation also reveals a significant utilization way to recover high-value products from waste gypsum, whereas there is a shortage of systematic reviews reporting the most …
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To investigate the macroscopic mechanical properties and failure evolution mechanism of desulfurization gypsum–fly ash fluid lightweight soil, a microscale numerical model using PFC2D (Particle Flow Code) was constructed. Uniaxial compression tests were conducted to determine the microscopic parameters of the model, extracting information …
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Tens of millions of tons of desulfurized gypsum can be produced in China every year. Desulfurization gypsum is used as an admixture to replace part of cement in concrete. And the smaller the particle size of desulfurized gypsum, the better the mechanical properties of cement mortar. The compressive and flexural tests show that the cement mortar with …
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