Download or read book Reclamation of Acid Toxic Coal Spoils Using Wet Flue Gas Desulfurization By product Fly Ash and Sewage Sludge Final Report written by and published by . This book was released on 1997 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Establishment of vegetation on acid abandoned minelands requires modification of soil physical and chemical conditions. Covering the acid minesoil with topsoil or borrow soil is a common practice but this method may be restricted by availability of borrow soil and cause damage to the borrow site. An alternative approach is to use waste materials as soil amendments. There is a long history of using sewage sludge and fly ash as amendments for acid minesoils. Flue gas desulfurization (FGD) by-products are newer materials that are also promising amendments. Most flue gas sludges are mixtures of Calcium sulfate (CaSO4), calcium sulfite (CaSO3), calcium carbonate (CaCO3), calcium hydroxide [Ca(OH)2], and fly ash. Some scrubbing processes produce almost pure gypsum (CaSO42H2O). The primary purpose of the project is to evaluate two wet FGD by-products for effects on vegetation establishment and surface and ground water quality on an acid minesoil. One by-product from the Conesville, OH power plant (American Electric Power Service Corporation) contains primarily calcium sulfite and fly ash. The other by-product (Mg-gypsum FGD) from an experimental scrubber at the Zimmer power plant (Cincinnati Gas and Electric Company) is primarily gypsum with 4% magnesium hydroxide. These materials were compared with borrow soil and sewage sludge as minesoil amendments. Combinations of each FGD sludge with sewage sludge were also tested. This report summarizes two years of measurements of chemical composition of runoff water, ground water at two depths in the subsoil, soil chemical properties, elemental composition and yield of herbaceous ground cover, and elemental composition, survival and height of trees planted on plots treated with the various amendments. The borrow soil is the control for comparison with the other treatments.

Download or read book The Status of Flue Gas Desulfurization Applications in the United States written by United States. Federal Power Commission and published by . This book was released on 1977 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical Fixation of Flue Gas Desulfurization Sludges and Fly Ash written by PL. Bishop and published by . This book was released on 1992 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study is under way to investigate the heavy metal binding mechanisms in solidified/stabilized high sulfur coal fly ash and flue gas desulfurization (FGD) sludges. Fly ash and sludge from a typical wet FGD process and dry flue gas desulfurization by-product from a demonstration lime injection multistage burner (LIMB) process are being evaluated. The latter material contains substantial portions of available lime and may prove amenable as a solidifying agent with the fly ash. This paper describes initial results on the waste characterization, solidified/stabilized waste form formulation, and influence of liquid/solid ratio on metal leaching from the waste forms.

Download or read book Disposal of Flue Gas Desulfurization Wastes written by and published by . This book was released on 1981 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings written by and published by . This book was released on 1976 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interagency Flue Gas Desulfurization Evaluation written by J. C. Dickerman and published by . This book was released on 1981 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flue gas cleaning sludge leachate liner compatibility investigation written by Clarence R. Styron and published by . This book was released on 1979 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Processing and Utilization of Wet Flue Gas Desulfurization Material written by and published by . This book was released on 1997 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cooperative Power's Coal Creek Station (CCS) became fully operational in 1981. The two 550-MW units at CCS burn North Dakota lignite. The resulting by-products are fly ash, bottom ash, and wet FGD material. Although disposal of the coal combustion by-products (CCBs) was included in the original site plant at CCS, even early on, consideration was given to utilization of the fly ash as a mineral admixture for concrete and as a partial sorbent replacement for the wet scrubbing system. CCS fly ash has been successfully marketed into North Dakota, Minnesota, and the surrounding region as a construction material that is environmentally benign, highly consistent, and an excellent performer in numerous construction applications. Attempts to use CCS fly ash as part of the scrubbing medium in the wet scrubbing system at the site were not as successful as first hoped, primarily due to the abrasive nature of the fly ash. Currently, CCS scrubbers use lime as the scrubbing medium for SO2 removal. CCS's efforts to market its fly ash have been successful, so with increased awareness of the economic advantages of by-product utilization, the favorable US Environmental Protection Agency (EPA) regulatory determination that CCBs are not hazardous, and the improved understanding of potential local and regional markets, Cooperative Power has taken additional steps to investigate the processing and utilization of its wet FGD material. These steps are discussed.

Download or read book Flue Gas Desulfurization by the Modified Citrate Process written by R. H. Lien and published by . This book was released on 1979 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sludge Oxidation in Limestone FGD Scrubbers written by Robert H. Borgwardt and published by . This book was released on 1977 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Desulfurization of Coal Slurries by Electrolysis written by Shashi Bhagwan Lalvani and published by . This book was released on 1986 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Beneficial Reuse of Lime Softening Residuals for Flue Gas Desulfurization written by Larry D. Shannon and published by American Water Works Association. This book was released on 1997 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Dissolution of Limestone Coal Fly Ash and Bottom Ash in Wet Flue Gas Desulphurization written by Lawrence Koech and published by . This book was released on 2015 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Management of High Sulfur Coal Combustion Residues written by and published by . This book was released on 1994 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of Flue Gas Desulfurization FGD By products at Coal Mines and Responses to the National Academy of Sciences Final Report Managing Coal Combustion Residues in Mines written by Kimery C. Vories and published by Department of Interior Office of Surface Mining. This book was released on 2006 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Desulfurization of Various Midwestern Coals by Flotation written by Kenneth J. Miller and published by . This book was released on 1977 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 23 European Symposium on Computer Aided Process Engineering written by Claudio Carletti and published by Elsevier Inc. Chapters. This book was released on 2013-06-10 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anthropogenic sulfur dioxide (SO2) is principally the product of energy conversion through combustion of fossil fuel sources. This pollutant causes acidic rain and can also be harmful for human health. Many means for controlling sulfur dioxide emission are available in the market and have been extensively applied. Among these techniques, wet flue gas desulfurization is one of the most widely used methods because of its reliability and high efficiency. Nonetheless, high energy and water consumption are among its principal drawbacks. Limestone dissolution has been accounted as one of the main controlling steps of the process (). Even though limestone is dissolved in acidic media in many industrial processes worldwide, no commonly accepted mathematical models exist for the dissolution kinetics at the moment. The reasons for the contradictory results in literature dwell, at least to considerable extent, from the varying influence of mass transfer limitations and the influence of CO2 on the pH. Experimental equipment and a methodology for evaluating the kinetic regime of a high grade limestone commercially used for desulfurization was developed in the current study. The results show that the kinetic regime, necessary to properly characterize the dissolution rate, can be reached even with small particle size and high temperatures with the help of severe agitation to overcome solid-liquid mass transfer and powerful purging to minimize the influence of carbonic acid on the pH. The method can be directly applied for investigating and comparing the reactivities of various limestone samples for industrial purposes.