Design of a Permeable Reactive Barrier to Remediate Acidic Groundwater

Alexandra N. Golab; Buddhima Indraratna; Mark A. Peterson; Stephen Hay

doi:10.1071/ASEG2006ab051

ISSN: 2202-0586
E-ISSN:

oa Design of a Permeable Reactive Barrier to Remediate Acidic Groundwater
Authors Alexandra N. Golab^a, Buddhima Indraratna^b, Mark A. Peterson^c and Stephen Hay^d
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^a Research Fellow CME EngineeringUniversity of Wollongong, NSW, , 2522, , Australia, [email protected] ^b Professor of Civil Engineering CME EngineeringUniversity of Wollongong, NSW, , 2522, , Australia, [email protected] ^c PhD Candidate CME EngineeringUniversity of Wollongong, NSW, , 2522, , Australia, [email protected] ^d Honours Student CME EngineeringUniversity of Wollongong, NSW, , 2522, , Australia, [email protected]
Publisher: Australian Society of Exploration Geophysicists
Source: ASEG Extended Abstracts, Volume 2006, Issue ASEG2006 - 18th Geophysical Conference, Dec 2006, p. 1 - 3
DOI: https://doi.org/10.1071/ASEG2006ab051
- Published online: 01 Dec 2006

Abstract

The Shoalhaven region of NSW experiences environmental acidification due to acid sulphate soils (ASS). In order to trial an environmental engineering solution to groundwater remediation involving a permeable reactive barrier (PRB), comprehensive site characterisation and laboratory-based batch and column tests of reactive materials were conducted. The PRB is designed to perform in-situ remediation of the acidic groundwater (pH 3) that is generated in ASS. Twenty-five alkaline reactive materials have been tested for suitability for the barrier, with an emphasis on waste materials, including recycled concrete, limestone, calcite-bearing zeolitic breccia, blast furnace slag, and oyster shells. Following three phases of batch tests, two waste materials (recycled concrete and oyster shells) were chosen for column tests that simulate flow conditions through the barrier and using acidic water from the field site (pH = 3). After 105 days in the column, the oyster shells still neutralised the water (pH = 7).

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2006-12-01

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References

Dent, D., 1986. Acid Sulphate Soils: a baseline for research and development, IRRI Publication No. 39. Wageningen, the Netherlands.
Gibert, O., de Pablo, J., Cortina, J.L. and Ayora, C, 2003. Evaluation of municipal compost/limestone/iron mixtures as filling material for permeable reactive barriers for in-situ acid mine drainage treatment. Journal of Chemical Technology & Biotechnology, 78(5): 489-496.
Indraratna, B., Golab, A., Glamore, W. and Blunden, B., 2005. Acid sulphate soil remediation techniques on the Shoalhaven River Floodplain, Australia. Quarterly Journal of Engineering Geology and Hydrogeology, 38: 129-142.
Waite, D.T., Desmier, R., Melville, M., Macdonald, B. and Lavitt, N., 2002. Preliminary investigation into the suitability of permeable reactive barriers for the treatment of acid sulfate soils discharge. In: D.L. Naftz, S.J. Morrison, C.C. Fuller and J.A. Davis (Editors), Handbook of Groundwater Remediation Using Permeable Reactive Barriers: Applications to Radionuclides, Trace Metals, and Nutrients. Academic Press, San Francisco, pp. 67-104.
Walker, P.H., 1972. Seasonal and stratigraphic controls in coastal floodplain soils. Australian Journal of Soil Research, 10: 127-142.
White, I., Melville, M.D., Wilson, B.P. and Sammut, J., 1997. Reducing acidic discharges from coastal wetlands in eastern Australia. Wetlands Ecology and Management, 5(1): 55-72.

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Article Type: Research Article

Keyword(s): acid sulphate soil; acidity; groundwater; permeable reactive barrier; remediation

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