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Abstract. Thermal Power Plant generates FGD gypsum as by-product during coal combustion. This study evaluates the characterization (spectroscopic and elemental), …
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This paper presents a comprehensive review of the state of the art in flue gas desulfurization (FGD) technologies for coal-fired boilers. Data on worldwide FGD applications reveal that wet FGD ...
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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), …
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a low-cost and abundant source of Ca, flue gas desulfurization (FGD) gypsum has become a common saline-sodic soil ameliorant to provide Ca 2+, which replaces exchangeable Na and reacts with CO
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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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1. Introduction. The application of industrial wastes to agricultural land has been a topic of considerable interest in recent years. Flue gas desulfurization gypsum (FGDG) is a by-product of sulfur (S) removal from fuel combustion gases in the flue gas desulfurization (FGD) system in coal-fired power generation plants [1].The removal is …
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Current study proposes an effective way to modify the properties of super-sulfated cement (SSC) paste and mortar with preheated flue gas desulfurization (FDG) gypsum at different temperatures and durations, and different sulfate compositions. Preheated FGDs with temperatures between 25 and 150 °C and durations between 0 …
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However, the large-scale application of flue gas desulfurization (FGD) gypsum for the reclamation of high-sodicity wasteland to obtain productive fields still lacks quick and concise evaluation indicators. Therefore, four FGD gypsum reclamation practices were applied in high sodicity-affected wastelands.
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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 most common FGD technology uses a limestone/gypsum wet-process. Currently in India, only 1% of coal-fired power plant capacity has installed the mandatory flue gas desulfurization equipment to control toxic sulfur dioxide emissions, despite an estimated investment requirement of over 80,000 crore rupees.
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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 …
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Flue gas desulfurization gypsum (FGDG), a solid waste material generated by power plants, offers a cost-effective solution for preparing backfill materials. Con
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Reagent Preparation System. The reagent preparation system of flue gas desulfurization (FGD) includes a Wet ball mill and cyclone classifiers which produce a finely ground limestone slurry at 90% solids passing through 325 mesh. One mill slurry tank and one slurry pump is supplied for one wet ball mill. The mill slurry pump will send …
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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 …
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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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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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1. Introduction. 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 …
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2.2 FGD gypsum and lignite humic acid preparation. The FGD gypsum was provided by Huaneng Power International, Inc. The particle size of the FGD gypsum is between 20 and 80 μm. The component and properties of FGD gypsum are given in Table 2.The concentrations of pollution elements in the FGD gypsum were far below the …
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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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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 …
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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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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 Desulfurization Product Use on Agricultural Land. V.C. Baligar, ... R.J. Wright, in Advances in Agronomy, 2011 4.3 Source of nutrients to plants. FGD gypsum is an excellent source of Ca and S. FGD gypsum application can improve yield and quality of high Ca requiring plants such as peanuts, tomatoes and cantaloupes (USEPA, …
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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 …
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A brand new method to transform flue gas desulfurization gypsum (FGD gypsum) into α-calcium sulfate hemihydrate (α-HH) with short hexagonal prisms mediated by succinic acid disodium salt ...
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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) …
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With a sustainable energy vision, India has emerged as a major contender within the Asia-Pacific region. Let's dive deeper into examining the factors that derive its prominence. …
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The massive accumulation of flue gas desulfurization (FGD) gypsum produced in the wet limestone-gypsum flue gas desulfurization process not only encroaches on lands but also causes serious environmental pollution. The preparation of α-hemihydrate gypsum (α-HH) is an important way to achieve high-value utilization of …
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