Gypsum shipments from the Sultanate of Oman, currently the world's biggest exporter of the industrial mineral, are projected to grow exponentially over the …
The flue gas desulphurization (FGD) system removes the sulphur compounds (SO2, SO3) and acids from the flue gas. The majority of sulphur removal systems use wet FGDs, …
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. However, limited research is available on the practical applications of FGD gypsum for P removal from water. Herein, batch sorption …
Bibliometric analysis is a useful tool for evaluating research progress on FGD (flue gas desulfurization) gypsum as a sustainable building material. Scientometric evaluation analyzes vast amounts of records without creating barriers [40]. Conventional manual review studies often lack the ability to establish a thorough and precise …
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, …
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 …
1. Introduction. Limestone/gypsum wet desulfurization technique has been widely used to remove sulfur oxides from flue gas or other industrial waste gas due to its high desulfurization efficiency and stability [1].It is reported that huge amount of FGD gypsum has generated worldwide, especially in China (80 Mt, 2017) and USA (30 Mt, …
This blog post is the third in a three-part series that discusses flue gas desulfurization (FGD). The first post provides overviews of sulfur dioxide (SO 2) and emissions regulations, the FGD industry, and global FGD market trends.The second post provides high-level overviews of wet, semi-dry, and dry FGD technologies with respect …
Three significant industrial gypsum by-products are flue-gas desulfurization gypsum (FGDG) [13], which is produced from coal combustion after the wet desulfurization of flue gas; phosphogypsum (PG ...
As expected, across the entire six-month whole pond experiment there was a significant increase in total hardness for ponds treated with FGD gypsum when compared to the control (RM-ANOVA, F 1,9 = 22.69, p = 0.001, Fig. 1 A).Before FGD gypsum addition, all ponds began with an average hardness range of 111–120 mg/L CaCO …
PurposeFor 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, …
The flue gas desulphurization (FGD) system removes the sulphur compounds (SO2, SO3) and acids from the flue gas. The majority of sulphur removal systems use wet FGDs, …
Fig. 1 shows the XRD pattern of FGD gypsum raw materials, which indicates that the main phase of FGD gypsum is calcium sulfate dihydrate. The morphology of FGD gypsum is given in Fig. 2.As illustrated in Fig. 2 a, the FGD gypsum has large particles with an average particle size distribution of about 60 μm. Fig. 2 b clearly reveals that …
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 …
Flue gas desulfurization gypsum (FGDG) is a by-product generated in the combustion of coal. This solid residue has the potential to be applied to the soil and help to reduce acidity and provide nutrients to soils impacted by surface coal mining. Thus, the objective of this work was to evaluate nutrients and heavy metals in soil and plant tissue …
Flue gas is passed through a spray of limestone slurry, which reacts with the SO2 to form gypsum, a useful byproduct. Features - High Efficiency: Capable of removing up to 95% …
Flue gas desulfurization gypsum (FGDG) is a by-product generated in the combustion of coal. This solid residue has the potential to be applied to the soil and help to reduce acidity and provide…
Quarrying and Gypsum Exporting. The group provides mining services to a variety of cement and gypsum quarries throughout The Sultanate of Oman. On site blast design …
Although flue gas desulfurization (FGD) gypsum has become an effective soil amendment for sodic soil reclamation, it carries extra heavy metal contamination into the soil environment. The fate of heavy metals introduced by FGD gypsum in sodic or saline-alkali soils is still unclear. This work aims to investigate the effects of FGD …
Comparative Analysis of Flue Gas Desulfurization Technologies in China's Energy Sector . Li Yizhe. 1,a,* 1. Northwest Normal University, 967 Anning E Rd, ... – gypsum flue gas desulfurization equipment from Mitsubishi Heavy Industries in Japan, equipped with two 360MW generator sets, achieving a desulfurization efficiency of …
Keywords: Desulfurization, Gypsum Board, Gypsum, Salt-Affected Soil, Soil Amelioration Soil salinization has progressed rapidly in northeastern and western China. In addition, air pollution is one of
EPA-CICA Fact Sheet Flue Gas Desulfurization1 Name of Technology: Flue Gas Desulfurization (FGD) - Wet, Spray Dry, and Dry Scrubbers Type of Technology: Control Device - absorption and reaction using an alkaline reagent to produce a solid ... (gypsum) are available (Cooper, 2002). In 1998, approximately 3% of FDG systems installed in the …
Four and one‐half, 9, and 18 mt/ha of either commercially available agricultural gypsum or two gypsum by‐products were applied to a Rayne soil (Fine‐loamy, mixed, mesic Typic Hapludult) with a strongly acid subsoil. Agricultural and FGD gypsum increased alfalfa DM yields by as much as 21 and 14%, respectively.
Flue gas desulfurization (FGD) is a critical process for reducing sulfur dioxide (SO2) emissions from industrial sources, particularly power plants. This research uses calcium silicate absorbent ...
Soil salinization has progressed rapidly in northeastern and western China. In addition, air pollution is one of the most serious environmental problems. To alleviate the problems of soil salinization, food shortages, and air pollution, we have studied the amelioration of salt-affected soil using the by-products of flue gas desulfurization …
1. Introduction. Flue gas desulfurization (FGD) involves the removal of sulphur dioxide (SO 2) contained in gases produced by the combustion of fossil fuels such as coal, oil, municipal solid waste and many industrial processes.SO 2 emissions are a primary contributor to acid rain and have been regulated by every industrialized nation in …
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 …
Semantic Scholar extracted view of "Effect of impure components in flue gas desulfurization (FGD) gypsum on the generation of polymorph CaCO3 during carbonation reaction." by Bo Wang et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 220,875,048 papers from all fields of science ...
Gypsum–urea is a kind of urea product with substantially reduced aqueous solubility and lower hygroscopicity that increases the soil retention time of urea and thus enhance its environmental sustainability. Here, gypsum–urea was prepared using bulk industrial solid waste flue gas desulfurization (FGD) gypsum as a raw material in a …
Flue gas desulfurization (FGD) gypsum, a byproduct of gas desulfurization from coal-fired power plants, mainly consists of CaSO 4 ·2H 2 O (Wang and Yang, 2018). FGD gypsum provides a source of Ca 2+, with divalent Ca 2+ ions being more strongly adsorbed to soil colloids than monovalent Na + ions, which the leaching of …
Flue gas desulfurization gypsum (FGDG) is an industrial by-product generated during the flue gas desulfurization process in coal-fired power plants. Due to …
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 …
The sulfite can be converted to gypsum, a salable by-product. Wet scrubbing treats high-sulfur fuels and some low-sulfur fuels where high-efficiency sulfur dioxide removal is required. ... More than ninety percent of U.S. flue gas desulfurization (FGD) system capacity uses lime or limestone. This trend will likely continue into the next phase ...
The conversion of CaSO4·2H2O (DH) to CaSO4·1/2H2O (HH) was facilitated by increasing glycerol content from 55% to 85% in glycerol–water mixtures; the average length and diameter of produced α-HH crystals decreased from 60.97 to 7.21 μm and from 15.21 to 5.17 μm, respectively, resulting in a decrease in the average aspect …
Abstract. The past several years has witnessed great progress in utilization of industrial waste gypsum. Newly developed carbonation technology toward CaCO3 …
Flue gas desulfurization gypsum (FGD Gypsum) is an industrial byproduct derived from the desulfurization of flue gas produced by the combustion of sulfur-containing fuels (mainly coal) and has been widely applied for improving agricultural soils and for the investigation and practice of mine reclamation (Dick 2006; Chen 2011). Studies have
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 function of calcium‑sodium ion exchange. Existing research has focused on the use of gypsum to improve saline-alkali soils in non-coastal areas. However, coastal areas ...
