DOI: 10.1016/J.CHEMOSPHERE.2021.130345 Corpus ID: 233665822; Application of flue gas desulfurization gypsum improves multiple functions of saline-sodic soils across China. @article{Wang2021ApplicationOF, title={Application of flue gas desulfurization gypsum improves multiple functions of saline-sodic soils across China.}, author={Yugang …
Therefore, a study was conducted on wasteland (600 ha) close to the Yellow River in Inner Mongolia, China. The main aim of this research was to evaluate the long-term effects of FGD …
Flue gas desulfurization (FGD) gypsum‐based reclamation of saline‐sodic soil has been widely recognized in the Songnen Plain of China, but its reclamation effect depends on water regime.
Flue gas desulfurized gypsum (FGD gypsum), mainly originates from thermal power plants, smelters, and large-scale enterprise boilers. This article reviews the production in China and the latest ...
This study aims to investigate the subsurface gravel ditches and desulfurization gypsum (DG) as amelioration methods for alkalized solonchak soils in Gansu Jingyuan of China (37°02' N, 104°96' E).
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 processing ...
abroad in the 1970s and simple dust removal and desulfurization equipment for small and medium boilers. At present, domestic desulfurization equipment has developed to more than 40 However, ... "limestone-gypsum method" for desulfurization because the two countries lack natural gypsum ... have already worked hard for China's flue gas ...
Compared with limestone-based wet flue gas desulfurization (WFGD), magnesia-based WFGD has many advantages, but it is not popular in China, due to the lack of good wastewater treatment schemes.
4,856km2 and occupies about 41.3% of the total area (National Bureau of Statistics of China, 2006). Almost all of this area is dry agricultural land. About 38% of the total cultivated area is salt ...
The semi-hydrate content of desulfurized gypsum is adjusted as a natural plaster substitute for producing gypsum board, wallboard [107].The modified treatment of desulfurized gypsum with cement, inorganic waste, straw fiber and other wastes can be used to manufacture high-insulation and compression-resistant wall materials [108].Desulfurized gypsum is incorporated into the …
A large amount of flue gas desulfurization (FGD) gypsum is produced by removal of SO2 from flue gas streams when fuels with high S content are burned. The FGD gypsum, similar to mined gypsum, can ...
Flue gas desulphurisation gypsum (FGDG) mainly refers to the solid by-product produced via lime gypsum desulphurisation that is performed in various industries to treat flue gas after the combustion of sulphur-containing fuels, such as coal and petroleum [1].In the limestone gypsum flue gas desulphurisation process, 2.7 tons of FGDG can be produced for every 1 ton …
Flue gas desulfurization gypsum (FGDG) is an industrial by-product generated during the flue gas desulfurization process in coal-fired power plants. ... For example, Liu et al. (2013) stated that a high Hg content and a low Cl − content are indicative of FGDG produced in China; while Skousen et al. (2012) ... The authors observed a small ...
Editors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers, or important in the respective research area. ... Matsumoto, S.; Sadakata, M. Alkali Soil Reclamation with Flue Gas Desulfurization Gypsum in China and Assessment of Metal Content in Corn Grains. Soil ...
sorbent slurry is simply injected via spray nozzles into a vertical tower where the slurry droplets are contacted with the upflowing flue gas. Part of the water in the slurry is evaporated by the hot flue gas and the flue gas becomes saturated with water vapor. The SO 2 dissolves into the slurry droplets and reacts with the alkaline sorbent ...
Spray Dryer Absorber: The lime slurry is typically dispersed into fine droplets using a rotary atomizer and contacts the flue gas to facilitate the absorption of SO 2 and other acid gases. The water in the sorbent slurry completely evaporates into the flue gas, forming a solid waste product containing the captured SO 2.The SO 2 is captured primarily as calcium sulfite …
However, limited information is available on the long-term effects of FGD gypsum in agricultural fields. This study evaluated the effects of FGD gypsum on soil physical and chemical properties and heavy metal …
A large amount of flue gas desulfurization (FGD) gypsum is produced by removal of SO2 from flue gas streams when fuels with high S content are burned. The FGD gypsum, similar to mined gypsum, can ...
Flue gas desulfurization (FGD) systems using lime or limestone as the chemical reagent are widely used throughout the world for SO 2 emissions control at coal-fired power plants. Ammonia-based ...
F lue gas desulfurization gypsum (FGDG) is a synthetic gypsum that is created during the removal of SO 2 from flue gas by reacting the SO 2 with calcite (CaCO 3) to form calcium sulfite (CaSO 3 ·0.5H 2 O), which is further treated with wet limestone and forced oxidization to form calcium sulfate (CaSO 4 ·2H 2 O) (Laperche and Bigham, 2002).Synthetic …
In the industrial production of China, the processing of phosphate rock, volcanic eruptions, kerosene combustion and aluminum smelting will lead to flue gas emissions containing a large amount of SO 2.SO 2 is a highly irritating gas. Because SO 2 is freely soluble in water and enters the respiratory tract, it can generate corrosive sulfurous acid, sulfuric acid, and sulfate …
Properties and production of FGD gypsum in China are given. Chinese government desulfurization measures during 2000–2019 are summarized. The application of FGD gypsum …
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 …
A Flue Gas Desulphurisation (FGD) system is majorly available in three variants – Wet Flue Gas Desulphurisation (WFGD), Spray Dryer Absorber (SDA) and Dry Sorbent Injection (DSI), each …
Effects of straw layer and flue gas desulfurization gypsum treatments on soil salinity and sodicity in relation to sunflower yield ... Ltd., Inner Mongolia, China) located approximately 50 km from the study site. The major chemical properties ... the plots were harrowed to a depth of 10–15 cm by a small tractor (Qufu Bochi Machinery Co., Ltd ...
To effectively solve the problem of recovery and utilization of flue gas desulfurized gypsum (FGDG), a new method for preparing SO2 gas by adding a mixture of FGDG and pyrite into a boiling furnace and utilizing its high-temperature waste heat is proposed. Using the FactSage 6.1 Reaction module and the Equilib module, the pyrolysis behavior of FGDG with …
with flue gas desulfurization gypsum in the Songnen Plain of China Wenchao Zhang1,2,3 | Wenxin Zhang3 ... Mongolia Autonomous Region of China, Grant/Award Number: 2021GG0065, 2021GG0369
Long-term performance of flue gas desulfurization gypsum in a large-scale application in a saline-alkali wasteland in northwest China ... (600 ha) close to the Yellow River in Inner Mongolia, China. The main aim of this research was to evaluate the long-term effects of FGD gypsum application on soil salinity and sodicity, crop production and ...
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., 2021).
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 gypsum was …
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