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 …
Heavy metals in flue gas desulfurization (FGD) gypsum from coal-fired power plants are at risk of releaching during the processes of stockpiling and resource …
In this paper, waste gypsum from wet flue gas desulfurization (WFGD) mixed with NH3·H2O was applied for CO2 absorption in the solid-liquid-gas phase system. The effects of operation temperature, CO2 flow rates, and ammonia-to-gypsum ratio on carbonation process were discussed. Meanwhile, a model for CO2 absorption in the …
For an alkaline–saline region in Northwest China, we examined the responses of soil microbial communities to flue gas desulfurization gypsum by …
Flue gas desulfurized gypsum (FGDG) is an industrial by-product discharged from thermal power plants, smelters, and large-scale enterprise boilers. It is produced when sulfur is removed from flues gases in the flue gas desulfurization (FDG) system, and the formation processes are shown by the following equations (Liu et al., …
converted into a gypsum slurry by the desulfurization pro-cess. The latter is then dehydrated to produce FGD gypsum (as shown in the following equations).17 Thus, the synthetic FGD gypsum can be used to replace natural gypsum in sev-eral industries.18,19 SO 2 in flue gas: Dissolution of limestone: An overall chemical reaction of the above ...
The treatment of flue-gas desulfurization (FGD) gypsum, a common solid waste material that is often affected by chloride ions, typically occupies large amounts of …
Purpose For an alkaline–saline region in Northwest China, we examined the responses of soil microbial communities to flue gas desulfurization gypsum by-products (FGDB), a new ameliorant for alkaline–saline soils. In 2009 and 2010, we collected soils from 0–20 cm and 20–40 cm depths along an experimental FGDB gradient (0, 0.74, …
DOI: 10.1016/j.conbuildmat.2023.132400 Corpus ID: 259531782; Modification mechanism of flue gas desulfurization gypsum on fly ash and ground granulated blast-furnace slag alkali-activated materials: Promoting green cementitious material
In this article, the flue gas desulfurization processes are briefly reviewed, and processes with highest use and with high potential for future use are compared from technical and economical points of view. In the selection of a desulfurization process, it is very important to consider the capacity of the plant, fuel type and fuel-to-sulfur ...
This study introduces the use of a waste by-product from wet limestone flue gas desulfurization as a potential material for fluoride removal. ... China; Key Laboratory of Hunan Province for Clean and Efficient Utilisation of Strategic Calcium ... Flue gas desulfurization (FGD) gypsum removes 93.31% of fluoride from 109 mg/L to 7.3 …
Treatments are shown as flue gas desulfurization gypsum–broiler litter in Mg ha −1. Despite the observed runoff separation among treatments, no statistically significant relationship emerged in 2009. In 2011, after three annual applications of FGDG and BL amendments, a ...
Semantic Scholar extracted view of "Study on the influence mechanism of flue gas desulphurisation gypsum on solid waste-based geopolymer grouting materials" by Dedan Duan et al. ... were prepared with flue gas desulfurization (FGD) gypsum by hydrothermal method, which could be … Expand. 8 [PDF] Save. The role of …
Satellite measurements oversee China's sulfur dioxide emission reductions from coal-fired power plants; Environmental change, adaptation strategies and the relevance of migration in Sub-Saharan drylands; A mild alcohol-salt route to synthesize α-hemihydrate gypsum microrods from flue gas desulfurization gypsum in large scale
As a byproduct generated during wet flue gas desulfurization, FGD gypsum is primarily composed of calcium sulfate dehydrate (C S ¯ H 2), which is the same as natural gypsum. With the rapid development of industries, FGD gypsum has become one of the bulk industrial solid wastes, and triggers many local environmental problems …
The synthesis of α-calcium sulfate hemihydrate (α-CSH) from flue gas desulfurization (FGD) gypsum is a good way to realize the comprehensive utilization of FGD gypsum. To obtain α-CSH with the satisfactory performances, a facile hydrothermal-aging pretreatment process for FGD gypsum raw materials was proposed, where FGD …
Max. Capacity. 1,050 MW. Max. Inlet SO 2 Concentration. 80,000 mg/Nm 3 (Coal fired). Max. SO 2 Removal Efficiency. 99%. High Reliability. The flue gas desulfurization (FGD) plant removes sulfur dioxides (SO 2) from flue gas produced by boilers, furnaces, and other sources.Mitsubishi Power effectively contributes to the prevention of air pollution through …
Flue gas desulfurization gypsum (FGDG), the by-product of wet and semi-dry desulfurization processes, has been used as an alkali soil amendment in …
1. Introduction. A massive amount of flue gas desulfurization (FGD) gypsum is generated from coal-fired power plants annually. Most FGD gypsum has still dumped in landfills for storage, which would not only involve serious water and air pollution problems and occupational health risks, but also waste large land and gypsum resources.
FGD gypsum was obtained commercially from Guixi Power Plant in Guangxi Province, China. The FGD gypsum had a free water content of 4.15 wt%, a dry density of 2.84 g/cm 3, and a pH of 6.89.The crystal morphology and mineral composition of the solid samples of FGD gypsum were analyzed through powder X-ray diffraction (XRD) …
[19] Qi C. B. 2010 Comparison between Magnesium Oxide and Limestone-Gypsum Wet Flue Gas Desulfurization Technology Silicon Valley 9 056. Google Scholar [20] Zhao X., Gao J., Wu S. H. and Qin Y. K. 2003 Development of Dry and Semi-Dry (Calcium Base) Flue Gas Desulfurization Technology Chemical Engineering 31 64-67. …
The effective and safe use of FGD gypsum in agricultural land is still debated in some countries even though its effectiveness in soil management has been reported in many studies. Thus, the changes in …
The production of flue gas desulfurization gypsum poses a serious threat to the environment. Thus, utilizing gypsum-based self-leveling mortar (GSLM) stands out as a promising and effective approach to address the issue. β-hemihydrate gypsum, cement, polycarboxylate superplasticizer, hydroxypropyl methyl cellulose ether (HPMC), …
Abstract. In this paper, the performance of steel slag (SS) and flue gas desulfurization (FGD) gypsum modified metakaolin-based geopolymer (MGP) was studied for the purpose of industrial solid waste reuse, and a new geopolymer grouting material was obtained. The setting time, fluidity, bulk density, and compressive strength …
Flue gas desulfurized gypsum mainly comes from thermal power plants, smelters, and large-enterprise boilers, and contains industrial by-products produced …
Flue gas desulfurization (FGD) process is the most widely used for ( {text{S}}{{text{O}}_2} ) capture in the world, which produce large amount of desulfurization gypsum . It is quite important to find a solution for comprehensive utilization of such desulfurization gypsum not only in the view of environment …
Therefore, in order to protect the environment, the desulfurization and denitration of flue gas in the combustion process of coal has become an important step. …
Flue gas desulfurization gypsum (FGDG), a solid waste produced during sulfur removal in coal-fired power plants, has applications in saline-alkali soil amelioration due to its …
This study aims to develop binary and ternary gypsum binders based on using the gypsum waste from the Flue Gas Desulphurization in Power Plants (Flue Gas …
The treatment of flue‐gas desulfurization (FGD) gypsum, a common solid waste material that is often affected by chloride ions, typically occupies large amounts of land, causes resource waste ...
The flue gas desulfurization (FGD) gypsum produced as an energy plant waste byproduct has recently been advocated as a physiochemical remediation strategy for P through sorptive removal.
To explore the possibility of using flue gas desulfurization gypsum (FGDG) for inhibiting phosphorus (P) loss due to agricultural runoff, a 3-year study was performed in the farmlands of Chongming Dongtan between 2012 and 2015. ... East China Normal University, Shanghai, 200062, China. 652755713@qq. PMID: 31012070 DOI: …
Efficient utilisation of flue gas desulfurization gypsum as a potential material for fluoride removal. Author links open overlay panel Jianhua Kang, Xiaoqin Gou, Yuehua Hu, ... Leaching characterization of dry flue gas desulfurization materials produced from different flue gas sources in China. Fuel, Volume 204, 2017, pp. 195-205.
Abstract: As a recycled material, flue gas desulfurization gypsum has been used to prepare calcium sulfate hemihydrate whisker (CSHW) through hydrothermal synthesis for several decades. However, the subsequent utilization of this resultant material has not yet received considerable attention. In the present research, CSHW was successfully …
PurposeAppropriate land management is important for improving the soil quality and productivity of the saline-sodic farmland. A recent study has revealed that flue gas desulfurization (FGD) gypsum and lignite humic acid application enhanced the salt leaching and crop production. The purpose of this study was to investigate the effects of …