Remediation of acid generating colliery spoil using steel slag – case studies

• Autorzy: Ghataora G. S. , Ghazireh N. , Hall N.

Identyfikatory

DOI

10.1515/sgem-2015-0024

• Języki publikacji: EN

Abstrakty

EN

One of the legacies of the coal mining industry is the existence of numerous colliery spoil mounds. Run-off waters from some of these mounds result in oxidation of sulphur compounds causing pH to drop to perhaps as low as 2.5. At this pH, mobility for metals increases and it results in destruction of both flora and fauna. In order to reduce acidity, a number of solutions have been investigated with varying degree of success. A recent study to reduce acidity in spoil run-off water included the use of Basic Oxygen Steel slag. Its slow release of lime resulted in longer term remediation compared with other techniques. In addition to this, steel slag contains elements which are essential for plant growth and can be regarded as a weak fertiliser. This was substantiated in two field trials, which had the aim of not only remediating acidity from two different types of colliery spoils, but also to develop a composition that supports grass growth. The objectives were achieved at both sites and some of the results of over 5000 chemical tests conducted during these studies are reported in this paper.

Słowa kluczowe

EN

colliery spoil; steel slag; limestone quarry fines; remediation of acidity

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2015
• Tom: Vol. 37, nr 2
• Strony: 75--84
• Opis fizyczny: Bibliogr. 13 poz., tab., rys.

Twórcy

autor

Ghataora G. S.

• School of Civil Engineering, University of Birmingham, Edgbaston, Birmingham, B152TT, United Kingdom

autor

Ghazireh N.

• Lafarge Tarmac Limited, Ettingshall, Wolverhampton, WV46JP, United Kingdom

autor

Hall N.

• Previously of Harper Adams University College, Newport, Shropshire, TF10 8NB, United Kingdom

Bibliografia

• [1] CAMERON D.G., IDOINE N.E., BROWN T.J., PATTON M.A.G., MCGINN C., MANKELOW, Directory of Mines and Quarries, Ninth ed., British Geological Survey, Keyworth, UK, 2010.
• [2] DEFRA, Protecting our water, soil and air. A code of good agricultural practice for farmers, growers and land managers, Department for Environment, Food and Rural Affairs, London, United Kingdom, 2009.
• [3] Environment Agency, Steel Slag, 2011, http://www.environmentagency. gov.uk/business/topics/waste/114453.aspx (accessed April 2012).
• [4] Environment Agency, EuropeanWaste Catalogue, Appendix A, 2002, http://www.environment-agency.gov.uk/static/ documents/GEHO1105BJVS-e-e.pdf
• [5] JESSIC J., The utilisation of reclaimed asphalt and steel slag fine, PhD Dissertation, The University of Birmingham, Birmingham, United Kingdom, 2003.
• [6] LAW I., Private communication, Previously of the Environment Agency, United Kingdom, 2002.
• [7] MAFF, Code of Good Agricultural Practice for Protection of Soi, Ministry of Agriculture, Fisheries and Food. London, United Kingdom, 1993.
• [8] MPA, Slag – Air-cooled basic oxygen steel slag, Mineral Products Association, 2014, http://www.mineralproducts.org/ prod_slag03.htm (accessed October 2014).
• [9] PALUMBO-ROE B., COLMAN, CAMERON D.G., LINLEY K., GUNN A.G., The nature of waste associated with closed mines in England and Wales, British Geological Survey, Minerals & Waste Programme Open Report OR/10/14, for The Department of the Environment, UK, 2010.
• [10] POH H.Y., Soil stabilisation using basic oxygen steel (BOS) slag fines. PhD Thesis, University of Birmingham, Birmingham, UK, 2005.
• [11] ROBINSON H., GHAZIREH N., GHATAORA G.S., Use of Basic Oxygen Steel Slag and Limestone Quarry Dust for Colliery Spoil Remediation – a Pilot Case Study, Euro slag 2005, 20–21 June 2005, Oulu, Finland, 2005.
• [12] STUBBLES J., The Basic Oxygen Steel Making Process, 2015, http://www.steel.org/Making%20Steel/How%20Its%20Made /Processes/Processes%20Info/The%20Basic%20Oxygen%20 teelmaking%20Process.aspx (Accessed January 2015)/
• [13] World Steel Association, (2015), http://www.worldsteel.org/ dms/internetDocumentList/statistics-archive/production-archive/ steel-archive/steel-annually/steel-annually-1980-2013/document/ steel%20annually%201980-2013.pdf (accessed January 2015).