1
|
Mahmoudzadeh A, Amiri-Ramsheh B, Atashrouz S, Abedi A, Abuswer MA, Ostadhassan M, Mohaddespour A, Hemmati-Sarapardeh A. Modeling CO 2 solubility in water using gradient boosting and light gradient boosting machine. Sci Rep 2024; 14:13511. [PMID: 38866817 PMCID: PMC11169523 DOI: 10.1038/s41598-024-63159-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 05/26/2024] [Indexed: 06/14/2024] Open
Abstract
The growing application of carbon dioxide (CO2) in various environmental and energy fields, including carbon capture and storage (CCS) and several CO2-based enhanced oil recovery (EOR) techniques, highlights the importance of studying the phase equilibria of this gas with water. Therefore, accurate prediction of CO2 solubility in water becomes an important thermodynamic property. This study focused on developing two powerful intelligent models, namely gradient boosting (GBoost) and light gradient boosting machine (LightGBM) that predict CO2 solubility in water with high accuracy. The results revealed the outperformance of the GBoost model with root mean square error (RMSE) and determination coefficient (R2) of 0.137 mol/kg and 0.9976, respectively. The trend analysis demonstrated that the developed models were highly capable of detecting the physical trend of CO2 solubility in water across various pressure and temperature ranges. Moreover, the Leverage technique was employed to identify suspected data points as well as the applicability domain of the proposed models. The results showed that less than 5% of the data points were detected as outliers representing the large applicability domain of intelligent models. The outcome of this research provided insight into the potential of intelligent models in predicting solubility of CO2 in pure water.
Collapse
Affiliation(s)
- Atena Mahmoudzadeh
- Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Behnam Amiri-Ramsheh
- Department of Petroleum Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Saeid Atashrouz
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
| | - Ali Abedi
- College of Engineering and Technology, American University of the Middle East, 54200, Egaila, Kuwait
| | - Meftah Ali Abuswer
- College of Engineering and Technology, American University of the Middle East, 54200, Egaila, Kuwait
| | - Mehdi Ostadhassan
- Institute of Geosciences, Marine and Land Geomechanics and Geotectonics, Christian-Albrechts-Universität, 24118, Kiel, Germany.
| | - Ahmad Mohaddespour
- Department of Chemical Engineering, McGill University, Montreal, QC, H3A 0C5, Canada.
| | | |
Collapse
|
2
|
Yao J, Wang H, Ma C, Cao Y, Chen W, Gu L, He Q, Liu C, Xiong J, Ma J, Huangfu X, Liu H. Cotransport of thallium(I) with polystyrene plastic particles in water-saturated porous media. JOURNAL OF HAZARDOUS MATERIALS 2022; 422:126910. [PMID: 34416700 DOI: 10.1016/j.jhazmat.2021.126910] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/31/2021] [Accepted: 08/12/2021] [Indexed: 06/13/2023]
Abstract
Exploring the transport behaviors of thallium (Tl) in porous media is crucial for predicting Tl pollution in natural soils and groundwater. In recent years, the misuse of plastics has led to plastic becoming an emerging pollutant in soil. In this work, the effects of plastic particles on Tl(I) transport in water-saturated sand columns were investigated under different ionic strengths (ISs), pH values, and plastic particle sizes. The two-site nonequilibrium model was selected to fit the breakthrough curves (BTCs) of Tl(I). The results demonstrated that nanoplastics (NPs) accelerated Tl(I) transport at pH 7, which might be attributed to the competitive adsorption of NPs and Tl(I) on sand surfaces. However, at pH 5, the deposited NPs might provide more adsorption sites for Tl(I), and thus enhance its retention in the columns. In addition, the "straining" process could intercept microplastics (MPs) with Tl(I) that was attached under unfavorable attachment conditions, which would result in the inhibited mobility of Tl(I). On the other hand, the migration of plastics was restrained to some extent when Tl(I) was present. Overall, the findings from this work provided a new perspective for understanding the transport of Tl(I) and plastics in subsurface environments.
Collapse
Affiliation(s)
- Jinni Yao
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Hainan Wang
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Chengxue Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Yu Cao
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Wanpeng Chen
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Li Gu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Qiang He
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Caihong Liu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Jiaming Xiong
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China
| | - Jun Ma
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Xiaoliu Huangfu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China.
| | - Hongxia Liu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region, Ministry of Education, College of Environment and Ecology, Chongqing University, Chongqing 400044, China.
| |
Collapse
|
3
|
Chemical Impacts of Potential CO2 and Brine Leakage on Groundwater Quality with Quantitative Risk Assessment: A Case Study of the Farnsworth Unit. ENERGIES 2020. [DOI: 10.3390/en13246574] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Potential leakage of reservoir fluids is considered a key risk factor for geologic CO2 sequestration (GCS), with concerns of their chemical impacts on the quality of overlying underground sources of drinking water (USDWs). Effective risk assessment provides useful information to guide GCS activities for protecting USDWs. In this study, we present a quantified risk assessment case study of an active commercial-scale CO2-enhanced oil recovery (CO2-EOR) and sequestration field, the Farnsworth Unit (FWU). Specific objectives of this study include: (1) to quantify potential risks of CO2 and brine leakage to the overlying USDW quality with response surface methodology (RSM); and (2) to identify water chemistry indicators for early detection criteria. Results suggest that trace metals (e.g., arsenic and selenium) are less likely to become a risk due to their adsorption onto clay minerals; no-impact thresholds based on site monitoring data could be a preferable reference for early groundwater quality evaluation; and pH is suggested as an indicator for early detection of a leakage. This study may provide quantitative insight for monitoring strategies on GCS sites to enhance the safety of long-term CO2 sequestration.
Collapse
|
4
|
Changes in Geochemical Composition of Groundwater Due to CO2 Leakage in Various Geological Media. WATER 2020. [DOI: 10.3390/w12092597] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study evaluated the effects of CO2 leakage on the geochemical composition of groundwater in various geological media through long-term column experiments. Four columns were set up with soil representing a silicate aquifer; clean sand; a sand and limestone mixture; and alluvium soil, respectively. The experiments were conducted under the same experimental conditions for approximately one year. As the CO2-saturated synthetic groundwater was introduced into the columns, a decrease in pH and increases in electrical conductivity (EC), alkalinity, and concentrations of cations and trace elements were observed in all geological media. However, different patterns of changes were also observed depending on the mineralogical and physico-chemical characteristics of each material. As the column operation continued, while the pH decreased and low alkalinity values were more evident in the silicate soil and clean sand columns, the carbonate column continued to show high alkalinity and EC values in addition to high concentrations of most cations. The alluvium soil showed distinctive cation-exchange behaviors during the initial introduction of CO2. The results indicate that changes in the geochemical composition of groundwater will depend on the characteristic of the geological medium such as pH buffering capacity and cation exchange capacity. This study can be useful for monitoring and managing the impacts of CO2 leakage in various aquifer environments.
Collapse
|
5
|
Cai Z, Wen H, Komarneni S, Li L. Mineralogy controls on reactive transport of Marcellus Shale waters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2018; 630:1573-1582. [PMID: 29554774 DOI: 10.1016/j.scitotenv.2018.02.223] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Revised: 02/14/2018] [Accepted: 02/18/2018] [Indexed: 06/08/2023]
Abstract
Produced or flowback waters from Marcellus Shale gas extraction (MSWs) typically are highly saline and contain chemicals including trace metals, which pose significant concerns on water quality. The natural attenuation of MSW chemicals in groundwater is poorly understood due to the complex interactions between aquifer minerals and MSWs, limiting our capabilities to monitor and predict. Here we combine flow-through experiments and process-based reactive transport modeling to understand mechanisms and quantify the retention of MSW chemicals in a quartz (Qtz) column, a calcite-rich (Cal) column, and a clay-rich (Vrm, vermiculite) column. These columns were used to represent sand, carbonate, and clay-rich aquifers. Results show that the types and extent of water-rock interactions differ significantly across columns. Although it is generally known that clay-rich media retard chemicals and that quartz media minimize water-rock interactions, results here have revealed insights that differ from previous thoughts. We found that the reaction mechanisms are much more complex than merely sorption and mineral precipitation. In clay rich media, trace metals participate in both ion exchange and mineral precipitation. In fact, the majority of metals (~50-90%) is retained in the solid via mineral precipitation, which is surprising because we typically expect the dominance of sorption in clay-rich aquifers. In the Cal column, trace metals are retained not only through precipitation but also solid solution partitioning, leading to a total of 75-99% retention. Even in the Qtz column, trace metals are retained at unexpectedly high percentages (~20-70%) due to precipitation. The reactive transport model developed here quantitatively differentiates the relative importance of individual processes, and bridges a limited number of experiments to a wide range of natural conditions. This is particularly useful where relatively limited knowledge and data prevent the prediction of complex rock-contaminant interactions and natural attenuation.
Collapse
Affiliation(s)
- Zhang Cai
- John and Willie Leone Family Department of Energy and Mineral Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Hang Wen
- Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Sridhar Komarneni
- Department of Ecosystem Science and Management, Materials Research Institute, The Pennsylvania State University, University Park, PA 16802, USA
| | - Li Li
- Department of Civil and Environmental Engineering, The Pennsylvania State University, University Park, PA 16802, USA.
| |
Collapse
|
6
|
Xiao T, Dai Z, Viswanathan H, Hakala A, Cather M, Jia W, Zhang Y, McPherson B. Arsenic mobilization in shallow aquifers due to CO 2 and brine intrusion from storage reservoirs. Sci Rep 2017; 7:2763. [PMID: 28584255 PMCID: PMC5459901 DOI: 10.1038/s41598-017-02849-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Accepted: 04/18/2017] [Indexed: 11/09/2022] Open
Abstract
We developed an integrated framework of combined batch experiments and reactive transport simulations to quantify water-rock-CO2 interactions and arsenic (As) mobilization responses to CO2 and/or saline water leakage into USDWs. Experimental and simulation results suggest that when CO2 is introduced, pH drops immediately that initiates release of As from clay minerals. Calcite dissolution can increase pH slightly and cause As re-adsorption. Thus, the mineralogy of the USDW is ultimately a determining factor of arsenic fate and transport. Salient results suggest that: (1) As desorption/adsorption from/onto clay minerals is the major reaction controlling its mobilization, and clay minerals could mitigate As mobilization with surface complexation reactions; (2) dissolution of available calcite plays a critical role in buffering pH; (3) high salinity in general hinders As release from minerals; and (4) the magnitude and quantitative uncertainty of As mobilization are predicated on the values of reaction rates and surface area of calcite, adsorption surface areas and equilibrium constants of clay minerals, and cation exchange capacity. Results of this study are intended to improve ability to quantify risks associated with potential leakage of reservoir fluids into shallow aquifers, in particular the possible environmental impacts of As mobilization at carbon sequestration sites.
Collapse
Affiliation(s)
- Ting Xiao
- Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.,Department of Civil and Environmental Engineering, University of Utah, Salt Lake City, UT, 84112, USA.,Energy and Geoscience Institute, University of Utah, Salt Lake City, UT, 84108, USA
| | - Zhenxue Dai
- Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA. .,College of Construction Engineering, Jilin University, Changchun, 130026, China. .,Key Laboratory of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130021, China.
| | - Hari Viswanathan
- Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA
| | - Alexandra Hakala
- U.S. Department of Energy, National Energy and Technology Laboratory, Pittsburgh, PA, 10940, USA
| | - Martha Cather
- Petroleum Recovery Research Center, New Mexico Institute of Mining and Technology, Socorro, NM, 87801, USA
| | - Wei Jia
- Department of Civil and Environmental Engineering, University of Utah, Salt Lake City, UT, 84112, USA.,Energy and Geoscience Institute, University of Utah, Salt Lake City, UT, 84108, USA
| | - Yongchao Zhang
- Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.,College of Geosciences, China University of Petroleum, Beijing, 102249, China
| | - Brian McPherson
- Department of Civil and Environmental Engineering, University of Utah, Salt Lake City, UT, 84112, USA.,Energy and Geoscience Institute, University of Utah, Salt Lake City, UT, 84108, USA
| |
Collapse
|
7
|
Goulding TA, De Orte MR, Szalaj D, Basallote MD, DelValls TA, Cesar A. Assessment of the environmental impacts of ocean acidification (OA) and carbon capture and storage (CCS) leaks using the amphipod Hyale youngi. ECOTOXICOLOGY (LONDON, ENGLAND) 2017; 26:521-533. [PMID: 28315979 DOI: 10.1007/s10646-017-1783-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/15/2017] [Indexed: 06/06/2023]
Abstract
This study aims to ascertain the effects of CO2 induced water acidification and leaks from Carbon Capture and Storage activities on the South American amphipod Hyale youngi. A 10-day acute toxicity test was performed using sediments from two sites located inside the Santos Estuarine System. They were subjected to five pH treatments (8.1, 7.6, 7.0, 6.5, and 6.0). Metals (Cd, Cu, Cr, Pb, Ni and Zn) and the metalloid As were analyzed to determine the influence of their acidification-related mobility on the amphipods mortality. The results showed that mortality becomes significant when compared to control in pH 6.5 in the Canal de Piaçaguera sediment (contaminated) and at pH 6.0 in Ilha das Palmas sediment (reference).
Collapse
Affiliation(s)
- T A Goulding
- Departamento de Química-Física, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, UNESCO/UNITWIN Wicop, Polígono Río San Pedro s/n, Puerto Real, 11510, Cádiz, Spain.
| | - M R De Orte
- Departamento de Ciencias do Mar, Instituto do Mar, Campus Baixada Santista, Universidade Federal de São Paulo, Av. Alm. Saldanha da Gama, 89-Ponta da Praia/SP CEP:11030-400, Santos, SP, Brazil
| | - D Szalaj
- Faculdade de Ciências, Instituto Dom Luiz, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - M D Basallote
- Departamento de Ciencias do Mar, Instituto do Mar, Campus Baixada Santista, Universidade Federal de São Paulo, Av. Alm. Saldanha da Gama, 89-Ponta da Praia/SP CEP:11030-400, Santos, SP, Brazil
| | - T A DelValls
- Departamento de Química-Física, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, UNESCO/UNITWIN Wicop, Polígono Río San Pedro s/n, Puerto Real, 11510, Cádiz, Spain
| | - A Cesar
- Departamento de Ciencias do Mar, Instituto do Mar, Campus Baixada Santista, Universidade Federal de São Paulo, Av. Alm. Saldanha da Gama, 89-Ponta da Praia/SP CEP:11030-400, Santos, SP, Brazil
| |
Collapse
|
8
|
Szalaj D, De Orte MR, Goulding TA, Medeiros ID, DelValls TA, Cesar A. The effects of ocean acidification and a carbon dioxide capture and storage leak on the early life stages of the marine mussel Perna perna (Linneaus, 1758) and metal bioavailability. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:765-781. [PMID: 27752956 DOI: 10.1007/s11356-016-7863-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 10/06/2016] [Indexed: 06/06/2023]
Abstract
The study assesses the effects of carbon dioxide capture and storage (CCS) leaks and ocean acidification (OA) on the metal bioavailability and reproduction of the mytilid Perna perna. In laboratory-scale experiments, CCS leakage scenarios (pH 7.0, 6.5, 6.0) and one OA (pH 7.6) scenario were tested using metal-contaminated sediment elutriates and seawater from Santos Bay. The OA treatment did not have an effect on fertilisation, while significant effects were observed in larval-development bioassays where only 16 to 27 % of larva developed normally. In treatments that simulated CO2 leaks, when compared with control, fertilisation success gradually decreased and no larva developed to the D-shaped stage. A fall in pH increased the bioavailability of metals to marine mussels. Larva shell size was significantly affected by both elutriates when compared with seawater; moreover, a significant difference occurred at pH 6.5 between elutriates in the fertilisation bioassay.
Collapse
Affiliation(s)
- D Szalaj
- Departamento de Ciências do Mar. Instituto do Mar, Campus Baixada Santista, Universidade Federal de São Paulo, Av. Alm. Sandanha da Gama, 89-Ponta da Praia/SP CEP, Santos, SP, 11030-400, Brazil.
- Faculdade de Ciências, Instituto Dom Luiz, Universidade de Lisboa, 1749-016, Campo Grande, Lisboa, Portugal.
| | - M R De Orte
- Departamento de Ciências do Mar. Instituto do Mar, Campus Baixada Santista, Universidade Federal de São Paulo, Av. Alm. Sandanha da Gama, 89-Ponta da Praia/SP CEP, Santos, SP, 11030-400, Brazil
| | - T A Goulding
- Departamento de Química-Física, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, UNESCO/UNITWIN Wicop, Polígono Río San Pedro s/n, 11510, Cádiz, Puerto Real, Spain
| | - I D Medeiros
- Departamento de Ciências do Mar. Instituto do Mar, Campus Baixada Santista, Universidade Federal de São Paulo, Av. Alm. Sandanha da Gama, 89-Ponta da Praia/SP CEP, Santos, SP, 11030-400, Brazil
| | - T A DelValls
- Departamento de Química-Física, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, UNESCO/UNITWIN Wicop, Polígono Río San Pedro s/n, 11510, Cádiz, Puerto Real, Spain
| | - A Cesar
- Departamento de Ciências do Mar. Instituto do Mar, Campus Baixada Santista, Universidade Federal de São Paulo, Av. Alm. Sandanha da Gama, 89-Ponta da Praia/SP CEP, Santos, SP, 11030-400, Brazil
| |
Collapse
|
9
|
Shao H, Qafoku NP, Lawter AR, Bowden ME, Brown CF. Coupled Geochemical Impacts of Leaking CO2 and Contaminants from Subsurface Storage Reservoirs on Groundwater Quality. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:8202-8209. [PMID: 26039150 DOI: 10.1021/acs.est.5b01004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The leakage of CO2 and the concomitant brine from deep storage reservoirs to overlying groundwater aquifers is considered one of the major potential risks associated with geologic CO2 sequestration (GCS). In this work both batch and column experiments were conducted to determine the fate of trace metals in groundwater in the scenarios of CO2 and metal-contaminated brine leakage. The sediments for this study were from an unconsolidated sand and gravel aquifer in Kansas, containing 0-4 wt % carbonates. Cd (114 μg/L) and As (40 μg/L) were spiked into the reaction system to represent potential contaminants from the reservoir brine. Through this research we demonstrated that Cd and As were adsorbed on the sediments, in spite of the lowered pH due to CO2 dissolution in the groundwater. Cd concentrations in the effluent were below the Cd MCL, even for sediments without detectable carbonate to buffer the pH. Arsenic concentrations in the effluent were also significantly lower than the influent concentration, suggesting that the sediments tested have the capacity to mitigate the coupled adverse effects of CO2 leakage and brine intrusion. The mitigation capacity of sediment is a function of its geochemical properties (e.g., the presence of carbonate minerals, adsorbed As, and phosphate).
Collapse
Affiliation(s)
- Hongbo Shao
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Nikolla P Qafoku
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Amanda R Lawter
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Mark E Bowden
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| | - Christopher F Brown
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
| |
Collapse
|
10
|
Rodríguez-Romero A, Basallote MD, De Orte MR, DelValls TÁ, Riba I, Blasco J. Simulation of CO₂ leakages during injection and storage in sub-seabed geological formations: metal mobilization and biota effects. ENVIRONMENT INTERNATIONAL 2014; 68:105-117. [PMID: 24721118 DOI: 10.1016/j.envint.2014.03.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 02/21/2014] [Accepted: 03/09/2014] [Indexed: 06/03/2023]
Abstract
To assess the potential effects on metal mobilization due to leakages of CO2 during its injection and storage in marine systems, an experimental set-up was devised and operated, using the polychaete Hediste diversicolor as the model organism. The objective was to study the effects of such leakage in the expected scenarios of pH values between 8.0 and 6.0. Polychaetes were exposed for 10 days to seawater with sediment samples collected in two different coastal areas, one with relatively uncontaminated sediment as reference (RSP) and the other with known contaminated sediment (ML), under pre-determined pH conditions. Survival and metal accumulation (Al, Fe, Mn, Cu, Zn, As and Hg) in the whole body of H. diversicolor were employed as endpoints. Mortality was significant at the lowest pH level in the sediment with highest metal concentrations. In general, metal concentrations in tissues of individuals exposed to the contaminated sediment were influenced by pH. These results indicate that ocean acidification due to CO2 leakages would provoke increased metal mobilization, causing adverse side effects in sediment toxicity.
Collapse
Affiliation(s)
- Araceli Rodríguez-Romero
- Departamento de Ecología y Gestión Costera, Instituto de Ciencias Marinas de Andalucía (CSIC), Avda. República Saharaui, 2, Campus Río San Pedro, 11510 Puerto Real, Cádiz, Spain.
| | - M Dolores Basallote
- Cátedra UNESCO/UNITWIN/WiCop, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Polígono Río San Pedro s/n, 11510 Puerto Real, Cádiz, Spain
| | - Manoela R De Orte
- Cátedra UNESCO/UNITWIN/WiCop, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Polígono Río San Pedro s/n, 11510 Puerto Real, Cádiz, Spain
| | - T Ángel DelValls
- Cátedra UNESCO/UNITWIN/WiCop, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Polígono Río San Pedro s/n, 11510 Puerto Real, Cádiz, Spain
| | - Inmaculada Riba
- Cátedra UNESCO/UNITWIN/WiCop, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, Polígono Río San Pedro s/n, 11510 Puerto Real, Cádiz, Spain
| | - Julián Blasco
- Departamento de Ecología y Gestión Costera, Instituto de Ciencias Marinas de Andalucía (CSIC), Avda. República Saharaui, 2, Campus Río San Pedro, 11510 Puerto Real, Cádiz, Spain
| |
Collapse
|
11
|
Mickler PJ, Yang C, Scanlon BR, Reedy R, Lu J. Potential impacts of CO2 leakage on groundwater chemistry from laboratory batch experiments and field push-pull tests. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:10694-10702. [PMID: 23937146 DOI: 10.1021/es401455j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Storage of CO2 in deep saline reservoirs has been proposed to mitigate anthropogenically forced climate change. If injected CO2 unexpectedly migrates upward in shallow groundwater resources, potable groundwater may be negatively affected. This study examines the effects of an increase in pCO2 (partial pressure of CO2) on groundwater chemistry in a siliclastic-dominated aquifer by comparing a laboratory batch experiment and a field single-well push-pull test on the same aquifer sediment and groundwater. Although the aquifer mineralogy is predominately siliclastic, carbonate dissolution is the primary geochemical reaction. In the batch experiment, Ca concentrations increase until calcite saturation is reached at ~500 h. The concentrations of the elements Ca, Mg, Sr, Ba, Mn, and U are controlled by carbonate dissolution. Silicate dissolution controls Si and K concentrations and is ~2 orders of magnitude slower than carbonate dissolution. Changing pH conditions through the experiment initially mobilize Mo, V, Zn, Se, and Cd; sorption reactions later remove these elements from solution and concentrations drop to pre-experiment levels. The EPA's primary and secondary MCL's are not exceeded except for Mn, which exceeded the EPA's secondary standard of 0.05 mg/L. Push-pull results also identify carbonate and silicate dissolution reactions ~2 orders of magnitude slower than batch experiments.
Collapse
Affiliation(s)
- Patrick J Mickler
- Bureau of Economic Geology, The University of Texas at Austin , University Station, Box X, Austin, Texas 78713-8924, United States
| | | | | | | | | |
Collapse
|
12
|
Payán MC, Galan B, Coz A, Vandecasteele C, Viguri JR. Evaluation through column leaching tests of metal release from contaminated estuarine sediment subject to CO₂ leakages from Carbon Capture and Storage sites. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2012; 171:174-184. [PMID: 22926654 DOI: 10.1016/j.envpol.2012.07.029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Revised: 07/17/2012] [Accepted: 07/21/2012] [Indexed: 06/01/2023]
Abstract
The pH change and the release of organic matter and metals from sediment, due to the potential CO(2) acidified seawater leakages from a CCS (Carbon Capture and Storage) site are presented. Column leaching test is used to simulate a scenario where a flow of acidified seawater is in contact with recent contaminated sediment. The behavior of pH, dissolved organic carbon (DOC) and metals As, Cd, Cr, Cu, Ni, Pb, Zn, with liquid to solid (L/S) ratio and pH is analyzed. A stepwise strategy using empirical expressions and a geochemical model was conducted to fit experimental release concentrations. Despite the neutralization capacity of the seawater-carbonate rich sediment system, important acidification and releases are expected at local scale at lower pH. The obtained results would be relevant as a line of evidence input of CCS risk assessment, in an International context where strategies to mitigate the climate change would be applied.
Collapse
Affiliation(s)
- M Cruz Payán
- Department of Chemical Engineering and Inorganic Chemistry, ETSIIT, University of Cantabria, Avda. de los Castros s/n, 39005 Santander, Spain
| | | | | | | | | |
Collapse
|