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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 ...
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The gypsum by-product can be recycled or disposed of. The primary reaction in this process occurs in the absorption tower. The absorbent delivered to the tower, a limestone slurry, mixes with flue gas cooled by the flue gas re-heater before entering the tower. The sulfur dioxide in the flue gas reacts with the calcium carbonate in the absorbent
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Flue gas desulfurization (FGD) gypsum and straw return have been recognized for their roles in reducing soil sodicity and improving soil organic matter. …
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Characterization of flue gas desulphurized (FGD) gypsum of a coal-fired plant and its relevant risk of associated potential toxic elements in sodic soil reclamation | …
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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. This work summarizes the desulfurization and denitration technology of coal-fired power plants in China. Firstly, it summarizes the existing desulfurization and denitration …
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gas desulfurization gypsum, a by-product of technologies developed to remove sulfur dioxide from the exhaust flue gases of coal- and gas-fueled power plants and placing it into soil [ 24 – 30 ].
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Flue gas desulfurization gypsum (FGDG) and fly ash (FA) are by-products from coal-fired power plants that urgently need to be recycled in a sustainable way. This study aims to develop a green binder using FGDG incorporating cement and large-volume FA that can substitute some cement in structural and geotechnical engineering …
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Flue gas desulfurization gypsum is also used as a source of essential plant nutrients such as Ca and S needed for optimum crop growth (Chen et al., 2011;Li et al., 2017), and to reduce DP loss ...
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Utilization of flue gas desulfurization (FGD) gypsum in China to improve alkaline soils started in the late 1990s. The FGD gypsum is a kind of desulfurized waste residue from power plant. It is an ...
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Soil salinity is a major limiting factor for crop production in arid and semi-arid regions of northwest China. Flue gas desulfurization gypsum (FGDG) is valuable waste resource which can be used to improve saline soil. Monolith lysimeter leaching experiment was conducted with FGDG in heavily saline-sodic soil of northwest China.
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In order to obtain high-quality FGD-gypsum from flue gas desulfurization, the FGD process must attain (1) a high efficiency of particulate controls; (2) causing a low Cl − and F − in FGD-gypsum; (3) a high efficiency of the forced oxidation process to oxidize the CaSO 3.2H 2 O and/or Ca(HSO 3) 2 to CaSO 4.2H 2 O; (4) using a high-purity ...
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Salt-Affected Soil Amelioration with Flue Gas Desulfurization By-Products and Waste Gypsum Board in Tianjin, China Yuji S AKAI 1, Shunrong R EN 2, Chang W ANG 3 and
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Flue gas desulfurization gypsum (FGDG) is an industrial by-product generated during the flue gas desulfurization process in coal-fired power plants. Due to its abundance, chemical and physical properties, FGDG has been used in several beneficial applications. However, during the past decade, the rate of beneficially used FGDG has …
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The article investigates how flue gas desulfurization gypsum (FGDG) modifies the properties of alkali-activated materials (AAMs) based on fly ash and ground granulated blast-furnace slag (GGBS). It reveals the role of FGDG in enhancing the strength, durability and microstructure of AAMs. The article also discusses the potential …
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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, …
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A large quantity of flue gas desulfurization gypsum (FGDG), a by-product of removing sulfur from combustion gases in coal-fired power generation plants, was produced in the world.
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Gypsum is a scarce resource in India. India's gypsum consumption in 2014– 15 was around ten million tonnes, out of which it only produced 2.5 million tonnes while importing …
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Flue gas desulfurization gypsum (FGDG) is an industrial by-product generated during the flue gas desulfurization process in coal-fired power plants. Due to …
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In addition to the replacement of cement with FA, the potential utilisation of flue gas desulfurisation gypsum (FGDG) and phosphogypsum (PG) has also gained considerable attention from researchers. Glasser et al. [23] reported that the partial replacement of cement with FGDG reduces cost, increases early strength gain, and …
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Flue gas desulfurization gypsum is also used as a source of essential plant nutrients such as Ca and S needed for optimum crop growth (Chen et al., 2011;Li et al., 2017), and to reduce DP loss ...
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Fly ash (FA), carbide slag (CS) and flue-gas-desulfurization gypsum (FGDG) are three solid wastes industrially produced in large quantities. The accumulation of these solid wastes seriously threatens human health and the environment [1, 2]. If not addressed in time, it can cause irreparable damage to the ecological balance [[3], [4], [5]].
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Triton's report estimates that the Global Flue Gas Desulfurization Market is likely to advance with a CAGR of 4.93% over the forecast years 2023-2030. The …
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We hypothesize that flue gas desulfurization (FGD) gypsum can be used as a soil amendment to accelerate the desalination process via calcium ions (Ca 2+) replacing exchangeable sodium (Na +) ions. Field experiments in reclaimed tidal lands in the Yangtze River delta were conducted with FGD gypsum applied at concentrations of …
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Flue gas desulfurization (FGD) gypsum-based reclamation of saline-sodic soil has been widely used in the Songnen Plain of China, but its reclamation effect depends on the water regime. A pot experiment was conducted to identify the optimal water regimes for reclaiming a highly saline-sodic soil [pH, electrical conductivity (EC) and …
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However, most of the results are based on simulations or small trial experiments, and there is a lack of information regarding the application of FGD gypsum to large-scale fields. ... Alkali soil reclamation with flue gas desulfurization gypsum in China and assessment of metal content in corn grains. Soil Sediment Contam., 13 (2012), pp. …
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Flue gas desulfurization (FGD) gypsum is mainly generated ... more than 90% of the construction gypsum produced in China is the ... steam from the evaporator and dryer (F) is cooled in
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Wet flue gas desulfurization or scrubber systems are an excellent way of reducing the sulfur dioxide emissions caused by coal combustion boilers. The flue gas discharged from the boiler is fed into the absorber. In the absorber, a mixture of water and pulverized limestone is sprayed on the flue gas. The limestone slurry absorbs the sulfur ...
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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).
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Flue gas desulfurized gypsum (FGD gypsum), mainly originates from thermal power plants, smelters, and large-scale enterprise boilers. This article reviews the …
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Flue gas desulfurized gypsum (FGD gypsum), mainly originates from thermal power plants, smelters, and large-scale enterprise boilers. This article reviews …
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