Evaluation through column leaching tests of metal release from contaminated estuarine sediment subject to CO2 leakages from Carbon Capture and Storage sites

Payán, M. Cruz; Galán, Berta; Coz, Alberto; Vandecasteele, Carlo; Viguri, Javier R.

doi:10.1016/j.envpol.2012.07.029

Cited by 32 publications

(15 citation statements)

References 66 publications

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“…It was made considering the influence of the Fe-and Al-(hydr)oxides (HFO), humic acids (HA) and fulvic acids (FA) to improve the previous model [24] which only took into account the DOC. Thus, the differences between experimental and predicted data decreased from one-three orders of magnitude, depending on the metal, to minor differences in the acidification range of interest, from zero to one order of magnitude for most cases.…”

Section: Resultsmentioning

confidence: 99%

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The Use of Leaching Tests to Assess Metal Release from Contaminated Marine Sediment under CO2 Leakages from CCS

et al. 2014

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This study provides a better knowledge of key parameters controlling the mobility of Dissolved Organic Carbon (DOC), As, Cd, Cr, Cu, Ni, Pb and Zn from contaminated marine sediment in contact with acidified seawater using static and dynamic standard leaching tests. These procedures have been modified in order to use different leaching agents, L/S ratios, contact times and pH values that simulate seawater acidification under CO 2 leakages scenarios. Studied sediment from a potential area of CO 2 storage, shows a high acid neutralisation capacity (ANC pH=4 =3.58 eq/kg) for deionised water as well as for seawater (ANC pH=4 =3.97 eq/kg). The availability control mechanism is shown by releasing Cd with seawater at pH values 6, 7 and 8 and by the releasing of Zn with seawater at pH 6; the solubility control mechanism appears for Ni release using natural seawater. Experimental results of metal release from the pH dependence leaching test are modelled with Visual MINTEQ geochemical software to predict metal release from sediment, obtaining minor differences with experimental values. An improvement in the metal release results has been obtained considering in the model the influence of the DOC, Fe-and Al-(hydr)oxides, humic acids and fulvic acids. The obtained results would be useful as a line of evidence input for the risk assessment of a Carbon Capture and Storage site where acidified seawater at different concentrations of CO 2 is in contact with sediment.

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Section: Resultsmentioning

confidence: 99%

“…The up-flow rate through the columns, in experiments of 1-56 hours, was 15±2 cm/day, as is standard. Leachates at different L/S ratios, between 0.1 and 10 l/kg, were filtered through a 0.45 μm pore size nitrocellulose filtration membrane and divided into subsamples to measure DOC, As, Cd, Cr, Cu, Ni, Pb and Zn concentrations [24].…”

Section: Leaching Testsmentioning

confidence: 99%

The Use of Leaching Tests to Assess Metal Release from Contaminated Marine Sediment under CO2 Leakages from CCS

et al. 2014

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“…Ho (Ho et al 2012) studied the metal release from the dredged sediments with the pH range from very low to very high -2 to 11. Payán (Payán et al 2012) studied the metal release from contaminated estuarine sediment in a very special case -when subjecting to CO 2 leakages from Carbon Capture and Storage sites.…”

Section: Heavy Metal Release From River Sediments Under Fi Eld Conditmentioning

confidence: 99%

“…As environmental conditions alter, heavy metals in the sediments can be released into the water source. The release of trace heavy metals from contaminated sediments may increase their concentrations in the overlying water to undesirable levels at the local scale that affect the environment and ecosystem health due to its characteristics of persistence and toxicity (Payán et al 2012). …”

Section: Introductionmentioning

confidence: 99%

Effect of overlying water pH, dissolved oxygen and temperature on heavy metal release from river sediments under laboratory conditions

Huang¹,

Zhang²,

Xu³

et al. 2017

Archives of Environmental Protection

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Abstract:The heavy metal release experiments were conducted in the laboratory to examine the effects of 3 factors -pH, dissolved oxygen (DO), and temperature on the metal release from sediments taken from the Huangpu River. The metal concentrations in the dry sediments ranged from 0.030 to 0.296 mg g -1 for Cr, 0.021 to 0.097 mg g -1 for Ni, 0.014 to 0.219 mg g -1 for Cu, 0.035 mg to 0.521 mg g -1 for Zn, 0.0002 to 0.001 mg g -1 for Cd and 0.023 to 0.089 mg g -1 for Pb. Most of the metals found in the sediments were in the form of residual fraction, the exchangeable fraction consisted of only a small portion of total metals. The average dissolved metal concentrations in the overlying water during the 13-day period under different conditions were ranging from 0.82 to 1.93 μg L -1 for Cr, 1.08 to 4.19 μg L -1 for Ni, 40.79 to 82.28 μg L -1 for Cu, 20.30 to 29.96 μg L -1 for Zn, 1.57 to 4.07 μg L -1 for Cd, and 22.26 to 75.50 μg L -1 for Pb, respectively. Statistical interpretation of the data indicated that pH (7, 8, 9), dissolved oxygen DO (1.0 and 5.0 mg L -1 ) and temperature (4, 16, 25°C) had no signifi cant effects on the heavy metal release under the studied conditions. Cu and Pb had the highest release fl ux, while Cd, Pb and Cu had higher mobility. The main factors controlling the metals release might be the inherent characters of metals and sediments.Unauthenticated Download Date | 5/13/18 9:52 AM Effect of overlying water pH, dissolved oxygen and temperature on heavy metal release from river sediments... 29

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“…More precise and observational data can be gathered from mesocosm or experimental based studies, where CO 2 treatments are initiated and the impact of a strictly controlled environmental parameter is observed and quantified with a high degree of accuracy (Payán et al, 2012a, b;Queirós et al, 2015). However, these experimental methods have several shortcomings in as much as they are tightly constrained and cannot replicate the complexity of the natural environment, so care must be taken when interpreting the results (Benton et al, 2007 Environmental parameters and benthic community composition have been studied around natural CO 2 seeps (Caramanna et al, 2011(Caramanna et al, , 2013, but they too are not ideal for the accurate quantification of environmental impact of a new CO 2 seep.…”

Section: Environmental Impacts Of Ccs -A Case Studymentioning

confidence: 99%

Reviews and synthesis: Carbon capture and storage monitoring – an integrated biological, biophysical and chemical approach

Hicks

Vik

Taylor

et al. 2015

Preprint

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Abstract. Carbon capture and storage (CCS) is a developing technology that seeks to mitigate against the impact of increasing anthropogenic carbon dioxide (CO2) production by capturing CO2 from large point source emitters. After capture the CO2 is compressed and transported to a reservoir where it is stored for geological time scales. Potential leakages from CCS projects, where stored CO2 migrates through the overlaying sediments, are likely to have severe implications on benthic and marine ecosystems. Nonetheless, prokaryotic response to elevated CO2 concentrations has been suggested as one of the first detectable warnings if a CO2 leakage should occur. Applying properties of prokaryotic communities (i.e. community composition and metabolic status) as a novel CO2 monitoring application is highly reliable within a multidisciplinary framework, where deviations from the baseline can easily be identified. In this paper we review current knowledge about the impact of CO2 leakages on marine sediments from a multidisciplinary-based monitoring perspective. We focus on aspects from the fields of biology, geophysics, and chemistry, and discuss a case study example. We argue the importance of an integrative multidisciplinary approach, incorporating biogeochemistry, geophysics, microbial ecology and modelling, with a particular emphasis on metagenomic techniques and novel bioinformatics, for future CCS monitoring. Within this framework, we consider that an effective CCS monitoring programme will ensure that large-scale leakages with potentially devastating effects for the overlaying ecosystem are avoided. Furthermore, the multidisciplinary approach suggested here for CCS monitoring is generic, and can be adapted to other systems of interest.

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Evaluation through column leaching tests of metal release from contaminated estuarine sediment subject to CO2 leakages from Carbon Capture and Storage sites

Cited by 32 publications

References 66 publications

The Use of Leaching Tests to Assess Metal Release from Contaminated Marine Sediment under CO2 Leakages from CCS

The Use of Leaching Tests to Assess Metal Release from Contaminated Marine Sediment under CO2 Leakages from CCS

Effect of overlying water pH, dissolved oxygen and temperature on heavy metal release from river sediments under laboratory conditions

Reviews and synthesis: Carbon capture and storage monitoring – an integrated biological, biophysical and chemical approach

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