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Feasibility of Coal Combustion Ash on Acidity Regulation for Agricultural Use

석탄연소재의 산도조절을 통한 농업적 활용 가능성

  • Oh, Sejin (Yeongheung Division, Korea South-East Power Co.) ;
  • Kang, Min Woo (Department of Environmental Engineering, Yonsei University) ;
  • Kim, Sung-Chul (Chungnam National University, Bio-Environmental Chemistry) ;
  • Lee, Sang Soo (Department of Environmental Engineering, Yonsei University)
  • Received : 2019.01.16
  • Accepted : 2019.03.22
  • Published : 2019.03.31

Abstract

BACKGROUND: Coal ashes generated from thermal power plants have been known as beneficial materials for agricultural use because of their nutrient elements. However, there is limitation to recycle them due to their alkalinity. The objective of this study was to evaluate the effectiveness or safety of the coal ashes for their heavy metals on agricultural recycling when adjusted to pH of 5 with sulfuric acid. METHODS AND RESULTS: Concentration of hydrogen which is needed to adjust pH of coal ash was estimated by using a buffering curve and then the amount of sulfuric acid was changed by the estimation before incubation. Each of fly ash (FA) and bottom ash (BA) was collected from both thermal plants of Yeongdong (YD) and Yeongheung (YH). The pH values of coal ashes increased to 4.76 (from 4.34) after incubation with sulfuric acid for 56 days, closer to the targeted pH. Coal ashes also increased the contents of available phosphorus by 2-fold (165 mg/kg) and 11-fold (1,137 mg/kg) for YDBA and YDFA, respectively, compared to the control. CONCLUSION: The utilization of coal ash with its acidity regulation would be very beneficial to agriculture sector and further suggest promising environmental safety against heavy metals.

Keywords

References

  1. Basu, M., Pande, M., Bhadoria, P. B. S., & Mahapatra, S. C. (2009). Potential fly-ash utilization in agriculture. Progress in Natural Science, 19(10), 1173-1186. https://doi.org/10.1016/j.pnsc.2008.12.006
  2. Gitari, W. M., Petrik, L. F., Etchebers, O., Key, D. L., Iwuoha, E. & Okujeni, C. (2008). Passive neutralisation of acid mine drainage by fly ash and its derivatives: A column leaching study. Fuel, 87, 1637-1650. https://doi.org/10.1016/j.fuel.2007.08.025
  3. Gupta, A. K., Dwivedi, S., Sinha, S., Tripathi, R. D., Rai, U. N., & Singh, S. N. (2007). Metal accumulation and growth perfomance of Phaseolus Vulgaris grown in fly ash amended soil. Bioresource Technology, 98, 3404-3407. https://doi.org/10.1016/j.biortech.2006.08.016
  4. Grubb, D. G., Guimarase, M. S., & Valencia, R. (2000). Phosphate immobilization using an acidic type F fly ash. Journal of Hazardous Materials, 76, 217-236. https://doi.org/10.1016/S0304-3894(00)00200-4
  5. Hodgson, L., Dyer, D., & Brown, D. A. (1982). Neutralization and dissolution of high-calcium fly ash. Journal of Environmental Quality, 11(1), 93-99. https://doi.org/10.2134/jeq1982.00472425001100010022x
  6. Karmakar, S., Mittra, B. N., & Ghosh, B. C. (2010). Enriched coal ash utilization for augmenting production of rice under acid lateritic soil. Coal Combustion and Gasification Products, 2, 45-50. https://doi.org/10.4177/CCGP-D-10-00002.1
  7. Kim, B. J. (1997). Effect of fly ash on the yield of Chinese cabbage and chemical properties of soil. Korean Journal of Soil Science and Fertilizer, 30(2), 161-167.
  8. Kishor, P., Ghosh, A. K., & Kumar, D. (2009). Use of fly ash in agriculture: a way to improve soil fertility and its productivity. Asian Journal of Agricultural Research, 4(1), 1-14. https://doi.org/10.3923/ajar.2010.1.14
  9. Kuk, K., Kim, H., & Chun, B. (2010). A study on the engineering characteristics of power plant coal ash. Journal of the Korean Geoenvironmental Society, 11(5), 25-34.
  10. Lee, C. H., Lee, J. Y., Ha, B. H., & Kim, P. J. (2005). Increased available phosphate by shell meal fertilizer application in upland soil. Korean Journal of Soil Science and Fertilizer, 38(1), 52-57.
  11. Lee, I. B., & Chang, K. W. (1999). pH buffer capacity and acidification resistance of alum paper mill sludge. Korean Journal of Soil Science and Fertilizer, 32, 1-6.
  12. Lee, S, H., Hong, B. D., An, Y., & Ro, H. M. (2003). Relation between growth condition of six upland-crops and soil salinity in reclaimed land. Korean Journal of Soil Science and Fertilizer, 36(2), 66-71.
  13. Manz, O. E. (1999). Coal fly ash: a retrospective and future look. Fuel, 78(2), 133-136. https://doi.org/10.1016/S0016-2361(98)00148-3
  14. Mittra, B. N., Karmakar, S., Swain, D. K., & Ghosh, B. C. (2005). Fly ash a potential source of soil amendment and a component of integrated plant nutrient supply system. Fuel, 84, 1447-1451. https://doi.org/10.1016/j.fuel.2004.10.019
  15. Navratil, T., Rohovec, J., Amirbahman, A., Norton, S. A., & Fernandez, I. J. (2009). Amorphous aluminum hydroxide control on sulfate and phosphate in sediment solution system. Water, Air, & Soil Pollution, 201(1-4), 87-98. https://doi.org/10.1007/s11270-008-9929-z
  16. Oh, S. J., Yun, H. S., Oh, S. M., Kim, S. C., Kim, R. Y., Seo, Y. H., Lee, K. S., Ok, Y. S., & Yang, J. E. (2013). Effect of fly ash fertilizer on paddy soil quality and rice growth. Journal of the Korean Society for Applied Biological Chemistry, 56(4), 229-234. https://doi.org/10.3839/jabc.2013.036
  17. Ohno, T. (1992). Neutralization of soil acidity and release of phosphorus and potassium by wood ash. Journal of Environmental Quality, 21(3), 433-438. https://doi.org/10.2134/jeq1992.00472425002100030022x
  18. Patra, K. C., Rautray, T. R., & Nayak, P. (2012). Analysis of grains grown on fly ash treated soils. Applied Radiation and Isotopes, 70(8), 1797-1802. https://doi.org/10.1016/j.apradiso.2012.03.037
  19. Sajwan, K. S., Alva, A. K., & Keefer, R. F. (2003). Chemistry of trace elements in fly ash, p. 346, Kluwer Academic/Plenum Publishers, New York, USA.
  20. Seidel, A., Sluszny, A., Shelef, G. & Zimmels, Y. (1999). Self inhibition of aluminum leaching from coal fly ash by sulfuric acid. Chemical Engineering Journal, 72(3), 195-207. https://doi.org/10.1016/S1385-8947(99)00006-6
  21. Yan, J., Moreno, L., & Neretnieks, I. (2000). The longterm acid neutralizing capacity of steel slag. Waste Management, 20(2-3), 217-223. https://doi.org/10.1016/S0956-053X(99)00318-9