Oxidation of FGD-CaSO3 and effect on soil chemical properties when applied to the soil surface

Chen, Liming; Ramsier, Cliff; Bigham, Jerry M.; Slater, Brian K.; Kost, David; Lee, Yong-Bok; Dick, Warren A.

doi:10.1016/j.fuel.2008.07.015

Cited by 34 publications

(11 citation statements)

References 18 publications

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“…This study was conducted nearly 20 yr ago, and the FGD gypsum production process has become more streamlined since that time. Other work with modern FGD gypsum has focused on soil chemical, rather than physical, properties (Stout et al, 2000;Torbert et al, 2005;Chen et al, 2009).…”

Section: In-season Effect Of Flue Gas Desulfurization Gypsum On Soil mentioning

confidence: 99%

In-Season Effect of Flue Gas Desulfurization Gypsum on Soil Physical Properties

Buckley

Wolkowski

2014

J. Environ. Qual.

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There is renewed interest in the application of gypsum to agricultural lands, particularly of gypsum produced during flue gas desulfurization (FGD) at coal-burning power plants. We studied the effects of land application of FGD gypsum to corn ( L.) in watersheds draining to the Great Lakes. The FGD gypsum was surface applied at 11 sites at rates of 0, 1120, 2240, and 4480 kg ha after planting to 3-m by 7.6-m field plots. Approximately 12 wk after application, penetration resistance and hydraulic conductivity were measured in situ, and samples were collected for determination of bulk density and aggregate stability. No treatment effect was detected for penetration resistance or hydraulic conductivity. A positive treatment effect was seen for bulk density at only 2 of 10 sites tested. Aggregate stability reacted similarly across all sites and was decreased with the highest application of FGD gypsum, whereas the lower rates were not different from the control. Overall, there were few beneficial effects of the FGD gypsum to soil physical properties in the year of application.

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Section: In-season Effect Of Flue Gas Desulfurization Gypsum On Soil mentioning

confidence: 99%

In-Season Effect of Flue Gas Desulfurization Gypsum on Soil Physical Properties

Buckley

Wolkowski

2014

J. Environ. Qual.

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“…Hua et al [19] found that a new type of road sub-base material (a mixture of FGD gypsum, water glass and slaked lime) reflected excellent mechanical properties and soundness durability. Apart from its use in construction industry, some attention has also been paid to the utilization of FGD gypsum to increase soil pH and reduce subsoil acidity and mechanical impedance for agricultural purpose [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Recycling flue gas desulphurization (FGD) gypsum for removal of Pb(II) and Cd(II) from wastewater

Yan

Qiao

Sun

et al. 2015

Journal of Colloid and Interface Science

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“…Therefore, the ion solution composition of sodic soils plays an important role in the reclamation process. Although several studies have examined the changes in the physicochemical properties of sodic soils and crop yield after applying BFGD, less attention has been paid to the ion solution composition [3], [6], [10], [12]–[13], [14]–[16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Byproducts of Flue Gas Desulfurization on the Soluble Salts Composition and Chemical Properties of Sodic Soils

2013

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The byproducts of flue gas desulfurization (BFGD) are a useful external source of Ca2+ for the reclamation of sodic soils because they are comparatively cheap, generally available and have high gypsum content. The ion solution composition of sodic soils also plays an important role in the reclamation process. The effect of BFGD on the soluble salts composition and chemical properties of sodic soils were studied in a soil column experiment. The experiment consisted of four treatments using two different sodic soils (sodic soil I and sodic soil II) and two BFGD rates. After the application of BFGD and leaching, the soil soluble salts were transformed from sodic salts containing Na2CO3 and NaHCO3 to neutral salts containing NaCl and Na2SO4. The sodium adsorption ratio (SAR), pH and electrical conductivity (EC) decreased at all soil depths, and more significantly in the top soil depth. At a depth of 0–40 cm in both sodic soil I and sodic soil II, the SAR, EC and pH were less than 13, 4 dS m−1 and 8.5, respectively. The changes in the chemical properties of the sodic soils reflected the changes in the ion composition of soluble salts. Leaching played a key role in the reclamation process and the reclamation effect was positively associated with the amount of leaching. The soil salts did not accumulate in the top soil layer, but there was a slight increase in the middle and bottom soil depths. The results demonstrate that the reclamation of sodic soils using BFGD is promising.

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Oxidation of FGD-CaSO3 and effect on soil chemical properties when applied to the soil surface

Cited by 34 publications

References 18 publications

In-Season Effect of Flue Gas Desulfurization Gypsum on Soil Physical Properties

In-Season Effect of Flue Gas Desulfurization Gypsum on Soil Physical Properties

Recycling flue gas desulphurization (FGD) gypsum for removal of Pb(II) and Cd(II) from wastewater

Effect of Byproducts of Flue Gas Desulfurization on the Soluble Salts Composition and Chemical Properties of Sodic Soils

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