Asian Journal of Research in Chemistry

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0974-4150 (Online)
0974-4169 (Print)


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Effect of Ammonium Compounds as Additives on the Dissolution Rate of Limestone Samples Sourced From Tirunelveli District, Tamil Nadu, India

Author(s): S. Vijaya Chitra

Email(s): vijchitra@yahoo.co.in

DOI: Not Available

Address: S. Vijaya Chitra
Department of Geology and Mining, Guindy, Chennai - 600 032 India
*Corresponding Author

Published In:   Volume - 3,      Issue - 4,     Year - 2010

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ABSTRACT:
Sulphur dioxide (SO2) represents one of the most important air pollution generators. The rate of CaCO3 dissolution in slurry scrubbers for flue gas desulphurization affects SO2 absorption, CaSO3 / CaSO4 scaling and ultimate CaCO3 utilization. Limestone is the low cost naturally occurring chemical which is the preferred reagent in many conventional WFGD systems. However, under normal system operating conditions, the limestone dissolves slowly. Therefore, in order to increase the alkalinity of the limestone slurry used in conventional WFGD systems and hence increase the system's SO2 removal efficiency, the use of ammonium compounds as the possible additives has been examined in this study. Under normal operating conditions, once the slurry containing the dissolved limestone is sprayed into the SO2 absorber, the dissolved limestone is quickly depleted making the slurry ineffective in removing more SO2 and requiring a high rate of slurry recycle. As a result, high capital and operating costs are required when low cost limestone is employed as the reagent in WFGD systems. Increasing the limestone dissolution rate in WFGD systems allows courser limestone particles; lower limestone stoichiometry and lower slurry recycle rates to be employed, thereby saving capital and operating costs. Marginal grade limestone samples collected from Tirunelveli district, Tamil Nadu have been taken up for this particular study under conditions similar to those encountered in wet FGD processes.


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Cite this article:
. Effect of Ammonium Compounds as Additives on the Dissolution Rate of Limestone Samples Sourced From Tirunelveli District, Tamil Nadu, India. Asian J. Research Chem. 3(4): Oct. - Dec. 2010; Page 990-994.

Cite(Electronic):
. Effect of Ammonium Compounds as Additives on the Dissolution Rate of Limestone Samples Sourced From Tirunelveli District, Tamil Nadu, India. Asian J. Research Chem. 3(4): Oct. - Dec. 2010; Page 990-994.   Available on: https://ajrconline.org/AbstractView.aspx?PID=2010-3-4-41


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Asian Journal of Research in Chemistry (AJRC) (ISSN: print-0974-4169, Online-0974-4150) is an international, peer-reviewed journal devoted to pure and applied chemistry. AJRC publishes Original Research Articles, Short Communications, Review Articles in all aspects of chemistry. Topics covered including the traditional areas of analytical, inorganic, organic, biochemistry, forensic, physical-theoretical chemistry as well as newer interdisciplinary areas such as agriculture, materials science, computational, medicine, spectroscopy, polymers, supramolecular, surface, chemical physics, biological, medicinal/ drugs, environmental and pharmaceutical chemistry.
The journal is published quarterly every year in last week of March, June, September and December. From January 2011, is monthly and shall be published every year in last week of Month.    
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