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Littérature scientifique sur le sujet « Soil remediation »

Auteur : Grafiati
Publié le 4 juin 2021
Mis à jour le 14 septembre 2024

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Articles de revues sur le sujet "Soil remediation"

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Lin, Mengting, Sairu Ma, Jie Liu, Xusheng Jiang et Demin Dai. « Remediation of Arsenic and Cadmium Co-Contaminated Soil : A Review ». Sustainability 16, no 2 (12 janvier 2024) : 687. http://dx.doi.org/10.3390/su16020687.

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The concurrent presence of arsenic (As) and cadmium (Cd) contamination in soil is widespread and severe, highlighting the need for remediation. However, remediating As and Cd co-contaminated soils is more complex than remediating soils contaminated with a single heavy metal due to the opposite properties of As and Cd in soil. Thus, the different forms of As and Cd in co-contaminated soils and their transformation rules have been systematically reviewed in this paper. Simultaneously, hyperaccumulators and immobilization amendments used in the remediation of As–Cd co-contaminated soil were reviewed. Moreover, the mechanisms of phytoremediation and chemical immobilization techniques in the treatment of As and Cd co-contaminated soil and the remediation effects were expounded in detail. To promote the development of ecological civilization, this paper proposes further remediation strategies and guidance for the remediation of As–Cd co-contaminated soil.
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Madonna, Sandra, Agus Jatnika Effendi, Edwan Kardena et Syarif Hidayat. « Bioavailability enhancement of petroleum-contaminated soil by electrokinetic remediation ». E3S Web of Conferences 485 (2024) : 02007. http://dx.doi.org/10.1051/e3sconf/202448502007.

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The Electro kinetic Remediation Technology (EKR) is recognized as the most potential remediation technology for soils with low permeability, like clay soil characteristics. Electrokinetic treatment could increase the bioavailability of contaminants in bioremediation petroleum-contaminated soil. The study, “Bioavailability enhancement of petroleum contaminated soil by electrokinetic remediation,” is experimental research in a laboratory to improve the bioavailability of petroleum hydrocarbons on clay during bioremediation with initial treatment using electrokinetic remediation techniques, finding optimum electrokinetic operating conditions of remediations, and analyzing the mechanism of remediation process in contaminated soil. Bioavailability enhancement was studied for 35 days. Polluted soil was treated with an electrokinetic box test (17cm×12cm×10cm), and DC power was used for 48 hours. Total Petroleum Hydrocarbon (TPH) concentration was determined by gravimetric methods. The results showed that the characteristics of the soil samples were dominated by 49.31% clay. The initial concentration of TPH in polluted soil is 3.7%. The electrokinetic applications during 48 hours and followed by bioremediation for 35 days those processes removed TPH up to 80.74 % (from 33780.66 mg HC (kg dry w)-1 to 6506.155176 mg HC (kg dry w)-1. There is an increase in bioavailability indicated by the rise in bacterial populations and an increase in biodegradation after electrokinetic remediation. With this approach, bioavailability has been increased by 70.18%. Bio-electrokinetic remediation is the recommended method for polluted clay soils with low bioavailability.
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Kowalska, Aneta, Jana Růžičková, Marek Kucbel et Anna Grobelak. « Carbon Sequestration in Remediated Post-Mining Soils : A New Indicator for the Vertical Soil Organic Carbon Variability Evaluation in Remediated Post-Mining Soils ». Energies 16, no 16 (8 août 2023) : 5876. http://dx.doi.org/10.3390/en16165876.

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The present study experimentally investigated two different open-cast post-mining areas with different remediation methods for the vertical distribution of sequestered soil organic carbon (SOC). The study has been performed for two soil layers (0–15 cm, and 15–30 cm) for the four areas with different remediation advancement (up to 20 years) at both studied post-mining soils: the limestone post-mining soil remediated with embankment and lignite post-mining soil remediated with sewage sludge. The study revealed that SOC is more stable within soil depths for lignite post-mining soil remediated with sewage sludge in comparison to the limestone post-mining soil remediated with embankment. The lignite post-mining soil remediated with sewage sludge showed a better hydrophobicity, humidity, aromaticity, and C/N ratio according to the 13C NMR. Therefore, in that soil, an increased microbial community has been observed. The study observed a positive correlation between GRSP content with a fungi community within soil depths. For lignite post-mining soil remediated with sewage sludge, the activity of ureases and dehydrogenases was generally lower compared to the post-mining soil remediation with embankment. The investigation found good parameters of Ce and NCER which for both studied areas were negative which indicate for the privilege of the higher capturing of CO2 over its release from the soil into the atmosphere. The study finds no relevant changes in SOC, POXC, TC, and LOI content within soil depth and remediation age. Due to the lack of a possible well-describing indicator of the vertical distribution of SOC stability in post-mining remediation soil, we proposed two different indicators for differentially managed post-mining soil remediations. The model of calculation of vertical SOC variability index can be universally used for different post-mining soils under remediation, however, both proposed calculated indexes are unique for studied soils. The proposed model of an index may be helpful for remediation management, C sequestration prediction, and lowering the carbon footprint of mining activity.
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Wang, Yu, Feng Pan, Qiong Wang, Jie Luo, Qin Zhang, Yingying Pan, Chenliang Wu et Wei Liu. « The Effect of Different Remediation Treatments on Soil Fungal Communities in Rare Earth Tailings Soil ». Forests 13, no 12 (24 novembre 2022) : 1987. http://dx.doi.org/10.3390/f13121987.

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Extensive mining of rare earth deposits has caused severe soil erosion, resulting in the degradation of plant–soil systems and the reduction in microbial diversity. Combined ecological remediation technology is the key method of vegetation reconstruction and ecological restoration in abandoned tailings. In this study, the effects of different cover crops–biochar–organic fertilizer and biochar–organic fertilizer treatments on soil fungal communities in rare earth tailings soil were analysed using high-throughput sequencing technology. Linear discriminant analysis effect size (LEfSe) was used to analyse saprophytic, mycorrhizal, and potential pathogenic fungi in soils after different combined remediations. Moreover, the effects of soil environmental factors on fungal community species’ composition were analysed by redundancy analysis (RDA) and variance partitioning analysis (VPA) after different combined remediations. LEfSe indicated a risk of citrus pathogenicity by Diaporthaceae indicator fungi after biochar–organic fertilizer combined treatment. RDA and VPA revealed that pH was the main environmental factor affecting the fungal community in the different combined remediation treatments. Additionally, the Paspalum wettsteinii cover crops–biochar–organic fertilizer and biochar–livestock manure treatments were more conducive to arbuscular mycorrhizal fungi recruitment. We also clarified the fungal community composition structure, soil environmental factors, and fungal community relationships in rare earth tailings soil after different combined remediation treatments.
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Lu, Yichang, Jiaqi Cheng, Jieni Wang, Fangfang Zhang, Yijun Tian, Chenxiao Liu, Leichang Cao et Yanmei Zhou. « Efficient Remediation of Cadmium Contamination in Soil by Functionalized Biochar : Recent Advances, Challenges, and Future Prospects ». Processes 10, no 8 (17 août 2022) : 1627. http://dx.doi.org/10.3390/pr10081627.

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Heavy metal pollution in soil seriously harms human health and animal and plant growth. Among them, cadmium pollution is one of the most serious issues. As a promising remediation material for cadmium pollution in soil, functionalized biochar has attracted wide attention in the last decade. This paper summarizes the preparation technology of biochar, the existing forms of heavy metals in soil, the remediation mechanism of biochar for remediating cadmium contamination in soil, and the factors affecting the remediation process, and discusses the latest research advances of functionalized biochar for remediating cadmium contamination in soil. Finally, the challenges encountered by the implementation of biochar for remediating Cd contamination in soil are summarized, and the prospects in this field are highlighted for its expected industrial large-scale implementation.
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Shit, Puspendu, Indranil Bhattacharjee, Partha Pratim Chakravorty, Harekrishna Jana et Yuji Sakai. « Pesticide Soil Pollution : An Overview about Advantages and Disadvantages of Different Remediation Technologies ». Current World Environment 18, no 2 (31 août 2023) : 752–74. http://dx.doi.org/10.12944/cwe.18.2.25.

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The use of pesticides presents a looming danger to the living elements of our ecological system, crops, and the well-being of our species. As an outcome, various organic contaminants pollute the soil. Different physical, chemical, and biological remediation techniques have been employed for the decontamination of pesticide-polluted soils. Remediation technology should always be affordable, on-site or in-situ, and capable of restoring the soil's natural functionality. The presence of multiple pesticides can pose challenges in effectively remediating them from the soil. The present work examines the scientific literature on the benefits and drawbacks of various existing and emerging soil remediation techniques. Customized technology choices and designs for specific site conditions enhance the effective cleanup of polluted areas. The present study, which evaluates and contrasts various technological approaches, shall serve as an invaluable tool for determining the optimal soil remediation method for a given contamination dilemma.
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Lee, Sang-Hwan, Soon-Oh Kim, Sang-Woo Lee, Min-Suk Kim et Hyun Park. « Application of Soil Washing and Thermal Desorption for Sustainable Remediation and Reuse of Remediated Soil ». Sustainability 13, no 22 (12 novembre 2021) : 12523. http://dx.doi.org/10.3390/su132212523.

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Global governance of soil resources as well as revitalizations and remediation of degraded areas seem to be necessary actions for sustainable development. A great deal of effort has gone into developing remediation technologies to remove or reduce the impact of these contaminants in the environment. However, contaminated soil remediations in stringent conditions deteriorate soil properties and functions and create the need for efficient soil revitalization measures. Soil washing (SW) and thermal desorption (TD) are commonly used to remediate contaminated soil and can significantly reduce the contaminant, sometimes to safe levels where reuse can be considered; however, the effects of treatment on soil quality must be understood in order to support redevelopment after remediation. In this review, we discussed the effects of SW and TD on soil properties, including subsequent soil quality and health. Furthermore, the importance of these techniques for remediation and reclamation strategies was discussed. Some restoration strategies were also proposed for the recovery of soil quality. In addition, remediated and revitalized soil can be reused for various purposes, which can be accepted as an implementation of sustainable remediation. This review concludes with an outlook of future research efforts that will further shift SW and TD toward sustainable remediation.
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Alazaiza, Motasem Y. D., Ahmed Albahnasawi, Gomaa A. M. Ali, Mohammed J. K. Bashir, Nadim K. Copty, Salem S. Abu Amr, Mohammed F. M. Abushammala et Tahra Al Maskari. « Recent Advances of Nanoremediation Technologies for Soil and Groundwater Remediation : A Review ». Water 13, no 16 (10 août 2021) : 2186. http://dx.doi.org/10.3390/w13162186.

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Nanotechnology has been widely used in many fields including in soil and groundwater remediation. Nanoremediation has emerged as an effective, rapid, and efficient technology for soil and groundwater contaminated with petroleum pollutants and heavy metals. This review provides an overview of the application of nanomaterials for environmental cleanup, such as soil and groundwater remediation. Four types of nanomaterials, namely nanoscale zero-valent iron (nZVI), carbon nanotubes (CNTs), and metallic and magnetic nanoparticles (MNPs), are presented and discussed. In addition, the potential environmental risks of the nanomaterial application in soil remediation are highlighted. Moreover, this review provides insight into the combination of nanoremediation with other remediation technologies. The study demonstrates that nZVI had been widely studied for high-efficiency environmental remediation due to its high reactivity and excellent contaminant immobilization capability. CNTs have received more attention for remediation of organic and inorganic contaminants because of their unique adsorption characteristics. Environmental remediations using metal and MNPs are also favorable due to their facile magnetic separation and unique metal-ion adsorption. The modified nZVI showed less toxicity towards soil bacteria than bare nZVI; thus, modifying or coating nZVI could reduce its ecotoxicity. The combination of nanoremediation with other remediation technology is shown to be a valuable soil remediation technique as the synergetic effects may increase the sustainability of the applied process towards green technology for soil remediation.
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Cao, Jian, Chenyang Lv, Chenxu Zhang, Fengxiang Yin, Zhengbo Gao, Long Wei et Lichang Wang. « Asynchronous Synergetic Remediation Strategy for Cd-Contaminated Soil via Passivation and Phytoremediation Technology ». Agronomy 14, no 9 (26 août 2024) : 1913. http://dx.doi.org/10.3390/agronomy14091913.

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Cadmium (Cd) contamination in soil has emerged as a significant challenge for agricultural production. Phytoremediation and passivation are key techniques for remediating Cd-contaminated soil. However, few studies have focused on the synergistic effects of these two techniques. In this work, the effectiveness of synergetic remediation strategies, both synchronous and asynchronous, utilizing passivation and phytoremediation techniques, was explored. The results of pot experiments and field experiments indicated that optimal remediation effects were obtained by asynchronous synergetic remediation, removing over 80% of bioavailable Cd within 14 days. Mechanistic studies conducted using XPS analysis, soil property analysis, and microbial diversity analysis confirmed that the chelation effect of SDD and soil pH value are the primary factors contributing to the effectiveness of both remediation strategies. In contrast, the variations in microbial populations are identified as the crucial factors influencing the varying outcomes of the two sequential remediation approaches. This research demonstrates that asynchronous synergistic remediation is a promising strategy for mitigating Cd contamination in soil.
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Samokhvalova, V., A. Fateev, S. Zuza, Ya Pogromska, V. Zuza, Ye Panasenko et P. Gorpinchenko. « Phytoremediation of technologically polluted soils ». Agroecological journal, no 1 (5 mars 2015) : 92–100. http://dx.doi.org/10.33730/2077-4893.1.2015.272192.

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We have elaborated the methodological approach for phytoremediation of anthropogenic contamination of soils by heavy metals (HM) according to the results of soil-geochemical investigations of the impact zones of the anthropogenic emissions of pollution sources of JSC «Ukrzink», JSC «Avdiivka coking plant» in Donetsk region. Methodological approach to anthropogenic contamination soil with HM is developed, method of soil phytoremediation for its more effective use, in which due to the expansion of spectrum use as phytoremediation dominant herbaceous wild plant species of competing families Asteraceae, Fabaceae and Poaceae with their interleaving in space and time, significantly extended the range of extraction different hazard classes HM out of the soil, increasing the efficiency of their biological remediation of different soil layers with increasing depth cleaning directly in the area of HM pollution (in situ), which ensures the minimization of the costs, continuity and intensification of the phytoremediation process of contaminated soils. The technical result of the elaborated method is expanding the range of plant remediaton use of different competitive families resistant to contamination and various biological potential phytoextraction and phytoaccumulation of HM, which ensures the reduction of soil cleanup, optimize its use due to the reduction of the period of biological remediation and remediation of contaminated soils and simultaneous avoidance of excessive process load on the soil.
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Thèses sur le sujet "Soil remediation"

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Mewett, John University of Ballarat. « Electrokinetic remediation of arsenic contaminated soils ». University of Ballarat, 2005. http://archimedes.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/12797.

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"Arsenic is a common soil contaminant in Australia and worldwide. There is a need to find safe, effective and economic methods to deal with this problem. The soils used in this research were collected from central Victoria. They were contaminated with arsenic by historic gold mining activity or by past sheep dipping practices. This research investigated ten different leaching agents for their effects on three different arsenic contaminated soils. [...] Electrokinetic experiments were conducted on three arsenic contaminated soils. [...] The arsenic in these soils appears to be relatively stable and immobile under oxidising conditions. The soils had a high iron content which assists in the stabilisation of arsenic. This is beneficial with respect to the environmental impact of the arsenic contamination, however, it remains an obstacle to low cost electrokinetic remediation."
Masters of Applied Science
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Mewett, John. « Electrokinetic remediation of arsenic contaminated soils ». Thesis, University of Ballarat, 2005. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/68354.

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"Arsenic is a common soil contaminant in Australia and worldwide. There is a need to find safe, effective and economic methods to deal with this problem. The soils used in this research were collected from central Victoria. They were contaminated with arsenic by historic gold mining activity or by past sheep dipping practices. This research investigated ten different leaching agents for their effects on three different arsenic contaminated soils. [...] Electrokinetic experiments were conducted on three arsenic contaminated soils. [...] The arsenic in these soils appears to be relatively stable and immobile under oxidising conditions. The soils had a high iron content which assists in the stabilisation of arsenic. This is beneficial with respect to the environmental impact of the arsenic contamination, however, it remains an obstacle to low cost electrokinetic remediation."
Masters of Applied Science
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Mewett, John. « Electrokinetic remediation of arsenic contaminated soils ». University of Ballarat, 2005. http://archimedes.ballarat.edu.au:8080/vital/access/HandleResolver/1959.17/14633.

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"Arsenic is a common soil contaminant in Australia and worldwide. There is a need to find safe, effective and economic methods to deal with this problem. The soils used in this research were collected from central Victoria. They were contaminated with arsenic by historic gold mining activity or by past sheep dipping practices. This research investigated ten different leaching agents for their effects on three different arsenic contaminated soils. [...] Electrokinetic experiments were conducted on three arsenic contaminated soils. [...] The arsenic in these soils appears to be relatively stable and immobile under oxidising conditions. The soils had a high iron content which assists in the stabilisation of arsenic. This is beneficial with respect to the environmental impact of the arsenic contamination, however, it remains an obstacle to low cost electrokinetic remediation."
Masters of Applied Science
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Eftekhari, Farzad. « Foam-surfactant technology in soil remediation ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0018/MQ54314.pdf.

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Spracklin, Katherine Helen. « The remediation of industrially contaminated soil ». Thesis, University of Newcastle Upon Tyne, 1992. http://hdl.handle.net/10443/656.

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The remediation of two contaminated soils in the Tyne and Wear Metropolitan district was examined. These were a sediment dredged from the river bed at Dunston Coal Staiths on the River Tyne (downstream from Derwenthaugh coke work site) and coke work-contaminated soil from the Derwenthaugh site, Blaydon, Nr. Newcastle-upon-Tyne. The river Tyne dredgings were of a very fine material (70% silt; 24% clay) with high water retention capacity. Levels of (EDTA available) Zn (490mg/kg), total Cd (7.5mg/kg) and total Pb (510mg/kg) were above the Department of Environment's (1987) threshold values for soil contaminants. Barley (Hordeuin vulgare L. cv Kym) sown in the drcdgings in ten outdoor plots (Irn x 0.5m), grew very poorly (yield = 2.4g dry wt. /plant, compared with that on an uncontaminatedc. ontrol soil (7.4g dry wt./ plant). The barley exhibited all the classic signs of metal phytotoxicity despite the addition of fcrtiliscr and organic waste (straw and spent mushroom compost). When lime was added to raise the pH of the dredgings in the plots to over pH 7.1, the growth rate and the yield of barley improved significantly (yield = 6.8g dry wt. /plant). Levels of available Zn, Cd, Pb and Cu in the limed dredgings were now lower than in the unlimed dredgings. Copper and zinc levels in leaves of barley raised on the limed material were lower than levels in barley grown on unlimed dredgings. There was no significant difference in yield or growth rate between the different plots of dredgings in which organic supplementation parameters were varied. In conclusion, pH was the dominant factor in the remediation of the heavy metal phytotoxicity in the dredged material. Gas chromatography/mass spectrophotometry analysis showed the principal contaminants of the coke works soil to be organic. The soil was heavily contaminated with coal tars (19.0%) consisting of a complex mixture of aliphatic, polycyclic and aromatic compounds including phenols (160mg/kg). Viable counts of the soil microflora, on selective media, showed the presence of bacteria capable of degrading phenol and several of its alkylated homologues and thiocyanate, which was converted to ammonia and used as aN source. The coke works soil was treated on a laboratory scale using microbially based clean-up methods. Soil was incubated in glass jars under laboratory conditions. Nu trients (yeast extract) and microbial biomass (a mixed culture, previously isolated and enriched by growth on cresol and thiocyanate, but capable of oxidising a wide range of alkylated phenols), were inoculated into the contaminated soil. The addition of such biomass (106 organisms /g soil) led to a marked improvement in the rate of phenolic degradation in the soil (26% loss in'22 weeks, compared with 9% in the untreated control. ). Degradation rates decreased after 14 days but a repeated application of biomass (106 organisms/g soil) caused further phenolic loss (47% total loss). Cresol (100mg/kg) subsequently added to the bacterial ly-amended soil disappeared within 7 days, showing that the biomass amendment was still biochemically very active. These findings demonstrate the importance and the effectiveness of two different treatment methods in the rcmediation of contaminated soil.
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Niarchos, Georgios. « Electrodialytic Remediation of PFAS-Contaminated Soil ». Thesis, KTH, Vatten- och miljöteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-239878.

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Per- and polyfluoroalkyl substances (PFASs) are a group of anthropogenic aliphatic compounds, widelyknown for their environmental persistence and toxicity to living beings. While they are ubiquitous in theenvironment, interest has been focused on contaminated soil, which can act as a primary recipient andsource of groundwater contamination. Electrokinetic technology is based on the movement of ionsunder the effect of an electric field. This could be a promising remediation solution, since PFASs areusually present in their anionic form. The contaminants can then be concentrated towards the anode,thus reducing a plume’s volume and possibly extracting the substances from soil. The preliminary aimof the present study was to evaluate the potential of using electrodialysis for the remediation of PFAScontaminatedsoil for the first time. Experiments were run with natural contaminated soil samples,originating from a fire-fighting training site at Arlanda Airport, and at Kallinge, Sweden, as well as inartificially spikedsoil. Electrodes were placed in electrolyte-filled chambers and separated by the soilwith ion-exchange membranes for pH-control. In total, five experiments were conducted. Two differentsetups were tested, a typical 3-compartment EKR cell and a 2-compartment setup, to allow for pHincrease and facilitate PFAS desorption. Two different current densities were tested; 0.19 mA cm-2 and0.38 mA cm-2. After twenty-one days, soil was cut in ten parts lengthwise and triplicate samples wereanalysed for PFAS concentrations, with HPLC-MS/MS. Sixteen out of the twenty-six screened PFASswere detected above MDL in the natural soil samples. The majority of the detected PFASs showed apositive trend of electromigration towards the anode, under both current densities, with only longerchainedcompounds (c>8) being immobile. This can be attributed to the stronger sorption potential oflong-chained PFAS molecules, as has been reported in previous sorption studies. Mass balancedistribution for a high current density (0.38 mA cm-2) experiment revealed that 73.2% of Σ26PFAS wasconcentrated towards the anode, with 59% at the soil closer to the anode, 5.7% at the anion exchangemembrane and 8.5% at the anolyte. It also showed higher mobility for short-chained molecules (c≤6),as they were the only compounds to be extracted from soil and be concentrated in the anolyte. Highercurrent densities were not directly correlated with higher electromigration rates, as to the lack of massbalance data for the low current density experiments. Regardless, electrodialysis could be a viable optionfor PFAS soil remediation and further research to encourage the understanding of the migrationmechanism, as well as combination with other treatment methods is encouraged.
Per- och polyfluoralkylsubstanser (PFAS) är en grupp av antropogena alifatiska föreningar, allmäntkända för sin miljöpåverkan och toxicitet för levande varelser. Medan de är allestädes närvarande imiljön har intresset varit inriktat på förorenad mark, som kan fungera som primär mottagare och källatill grundvattenförorening. Elektrokinetisk teknik är baserad på jonernas rörelse under effekten av ettelektriskt fält. Detta kan vara en lovande lösningsmedel, eftersom PFAS är vanligtvis närvarande i sinanjoniska form. Föroreningarna kan sedan koncentreras mot anoden, vilket reducerar en plums volymoch eventuellt extraherar ämnena från jorden. Det preliminära målet med den föreliggande studien varatt utvärdera potentialen att använda elektrodialys för sanering av PFAS-förorenad jord för förstagången. Experimenten kördes med naturliga förorenade jordprover, härrörande från enbrandbekämpningsplats vid Arlanda flygplats, och i Kallinge, Sverige, samt i konstgjort spikedsol.Elektroder placerades i elektrolytfyllda kamrar och separerades av jorden med jonbytesmembran förpH-kontroll. Totalt genomfördes fem experiment. Två olika inställningar testades, en typisk 3-facksEKR-cell och en 2-facksinställning, vilket möjliggör pH-ökning och underlättar PFAS-desorption. Tvåolika strömtätheter testades; 0,19 mA cm-2 och 0,38 mA cm-2. Efter tjugo dagar skärs jorden i tio delari längdriktningen och trippelprover analyserades för PFAS-koncentrationer, med HPLC-MS / MS.Sexton av de tjugosex screenade PFAS: erna detekterades över MDL i de naturliga markproverna.Majoriteten av de upptäckta PFAS-värdena visade en positiv trend av elektromigration mot anodenunder båda strömtätheten, varvid endast längre kedjiga föreningar (c> 8) var immobila. Detta kanhänföras till den starkare sorptionspotentialen hos långkedjiga PFAS-molekyler, vilket har rapporteratsi tidigare sorptionsstudier. Massbalansfördelning för ett experiment med hög strömtäthet (0,38 mA cm-2) visade att 73,2% av Σ26PFAS koncentrerades mot anoden, med 59% vid jorden närmare anoden, 5,7%vid anjonbytarmembranet och 8,5% vid anolyten. Det visade också högre rörlighet för kortkedjigamolekyler (c≤6), eftersom de var de enda föreningarna som skulle extraheras från jord och koncentrerasi anolyten. Högre strömtätheter var inte direkt korrelerade med högre elektromigrationshastigheter,avseende bristen på massbalansdata för experimenten med låg strömtäthet. Oavsett elektrodialys kandet vara ett lönsamt alternativ för PFAS-markrening och ytterligare forskning för att uppmuntraförståelsen för migrationsmekanismen, liksom kombinationen med andra behandlingsmetoder främjas.
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Anunike, Chidinma. « Deployment of calcium polysulphide for the remediation of chromite ore processing residue ». Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=227912.

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Chromium contamination of groundwater and soils continues to pose a major environmental concern. Soils may have become contaminated with chromium through former industrial activities geochemical enrichment. The nature of the industrial activity will determine the form and concentration of the chromium as well as the presence of co-contaminants and the pH and redox of the soil. Chemical reductants have been widely used for the transformation of hexavalent chromium in the environment. Over recent decades attention focused on the chemical reductant calcium polysulphide which has performed effectively in the treatment of groundwater and soil samples contaminated with Cr(VI). Yet a detailed understanding of calcium polysulphide (CaSx) performance has not yet been established. Hexavalent chromium concentrations in aqueous and groundwater samples were significantly reduced by calcium polysulphide and CaSx:chromate molar ratio of 1.5 was sufficient to prevent partitioning of Cr(VI) into solution and to precipitate the solution phase. Calcium polysulphide was used for the remediation of solid chromite ore processing residue (COPR) samples. Prior to the application of calcium polysulphide to COPR, each of the key steps were optimized. A range-finding experiment was conducted to understand the dosage and treatment regime at which Cr(VI) immobilization within COPR was optimal. The results indicated that unsaturated deployment of CaSx into the medium outperformed that in saturated systems. A higher polysulphide amendment dose of 5% w/v concentration enhanced the final treatment of Cr(VI) within COPR. The toxicity and carcinogenicity of Cr(VI) over Cr(III) requires a technique capable of discriminating between valencies. The EPA Method 7196A specifically quantifies the concentrations of Cr(VI) in environmental samples and was used for all analysis to differentiate between Cr(VI) and Cr(III). Cr(III) was calculated as the difference between the Cr(VI) and Cr-total concentrations. In addition to the EPA 7196A, a novel ion exchange resin (IER) procedure was developed to differentiate the two species of chromium. After optimisation, Amberlite resins IRA 400 and IR-120 were used for the specific sorption and subsequent analysis of aqueous Cr(VI) and Cr(III) solutions. For the selective removal of chromate from groundwater, waste water and soil samples, Amberlite IRA 400 achieved a consistent performance of >97% removal in a range of trials. The IERs in this work were applied as analytical tools however they could be applied as remediation tools. While aqueous treatment of chromium contaminated media using CaSx was very successful, COPR treatment proved to be difficult due to the complex nature of the system. An understanding of stoichiometric responses to CaSX has been established, but the nuances of soil physicochemical interactions require more thorough investigation.
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Walter, David J. « Soil enhancement by fluid injection for in situ treatment of contaminated soil ». Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0008/NQ52695.pdf.

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Williamson, Derek Guthrie. « Relating release and biodegradation kinetics in soils containing aged mixtures of hydrocarbons / ». Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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McNear, David H. « The plant soil interface nickel bioavailability and the mechanisms of plant hyperaccumulation / ». Access to citation, abstract and download form provided by ProQuest Information and Learning Company ; downloadable PDF file [ ] Mb., 234 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3205442.

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Livres sur le sujet "Soil remediation"

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Lukas, Aachen, et Eichmann Paul 1966-, dir. Soil remediation. Hauppauge, NY, USA : Nova Science Publishers, 2009.

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Mirsal, Ibrahim A. Soil pollution : Origin, monitoring & remediation. 2e éd. Berlin : Springer, 2008.

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Johnson, John B. Soil remediation technology. Norwalk, CT : Business Communications Co., 1999.

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C, Anderson William, American Academy of Environmental Engineers. et WASTECH, dir. Soil washing/soil flushing. Annapolis, Md : American Academy of Environmental Engineers, 1993.

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Reddy, R. N. Soil engineering : Testing, design and remediation. New Dehli : Gene-Tech Books, 2010.

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Otten, Almar, Arne Alphenaar, Charles Pijls, Frank Spuij et Han Wit. In Situ Soil Remediation. Dordrecht : Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5594-6.

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Meuser, Helmut. Soil Remediation and Rehabilitation. Dordrecht : Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-5751-6.

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Almar, Otten, dir. In situ soil remediation. Dordrecht : Kluwer Academic Publishers, 1997.

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1971-, Clark Clayton J., Lindner Angela Stephenson 1961- et American Chemical Society. Division of Environmental Chemistry, dir. Remediation of hazardous waste in the subsurface : Bridging flask and field. Washington, DC : American Chemical Society, 2006.

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Friend, David J. Remediation of petroleum-contaminated soils. Washington, D.C : National Academy Press, 1996.

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Chapitres de livres sur le sujet "Soil remediation"

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Goud, E. Lokesh, Prasann Kumar et Bhupendra Koul. « Soil Remediation ». Dans Nanomaterials for Environmental Applications, 261–80. Boca Raton : CRC Press, 2021. http://dx.doi.org/10.1201/9781003129042-10.

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W. Rate, Andrew. « Urban Soil Remediation ». Dans Urban Soils, 351–98. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-87316-5_11.

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Spellman, Frank R. « Soil Pollution Remediation ». Dans The Science of Environmental Pollution, 319–52. 4e éd. Fourth edition. | Boca Raton : CRC Press, 2021. : CRC Press, 2021. http://dx.doi.org/10.1201/9781003180906-19.

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Reineke, Walter, et Michael Schlömann. « Biological Soil Remediation ». Dans Environmental Microbiology, 523–42. Berlin, Heidelberg : Springer Berlin Heidelberg, 2023. http://dx.doi.org/10.1007/978-3-662-66547-3_16.

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Kuhad, Ramesh Chander, et Rishi Gupta. « Biological Remediation of Petroleum Contaminants ». Dans Soil Biology, 173–87. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89621-0_9.

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Branzini, Agustina, et Marta S. Zubillaga. « Phytostabilization as Soil Remediation Strategy ». Dans Soil Biology, 177–98. Berlin, Heidelberg : Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-35564-6_10.

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Osman, Khan Towhid. « Soil Resources and Soil Degradation ». Dans Soil Degradation, Conservation and Remediation, 1–43. Dordrecht : Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-7590-9_1.

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Otten, Almar, Arne Alphenaar, Charles Pijls, Frank Spuij et Han Wit. « The Role of in Situ Remediation in the Remediation Practice ». Dans Soil & ; Environment, 92–94. Dordrecht : Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5594-6_8.

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Osman, Khan Towhid. « Soil Pollution ». Dans Soil Degradation, Conservation and Remediation, 149–226. Dordrecht : Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-7590-9_6.

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Russell, David L. « Soil Properties ». Dans Remediation Manual for Contaminated Sites, 75–87. 2e éd. Boca Raton : CRC Press, 2024. http://dx.doi.org/10.1201/9781003333852-4.

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Actes de conférences sur le sujet "Soil remediation"

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Liu, Yunsong, Jiajun Chen, Xingwei Wang, Meng Wei et Lanxiang Shi. « Compatibility of Polymer and Remediation Agents for Enhanced Soil Remediation ». Dans 2015 6th International Conference on Manufacturing Science and Engineering. Paris, France : Atlantis Press, 2015. http://dx.doi.org/10.2991/icmse-15.2015.121.

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Ribeiro, A., C. Vilarinho, J. Araújo et J. Carvalho. « Electrokinetic Remediation of Contaminated Soils With Chromium ». Dans ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87552.

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Soil is a vital natural resource that regulates our environment sustainability and provide essential resources to humans and nature. Nowadays, with an increasingly populated and urbanized world, pollution is widely recognized as a significant challenge to soil and groundwater resources management. The most common chemicals found in soils and water plumb in a dissolved state and considered as potential pollutants are heavy metals, dyes, phenols, detergents, pesticides, polychlorinated biphenyls (PCBs), and others organic substances, such as organic matter. Unlike organic contaminants, heavy metals are not biodegradable and tend to accumulate in living organisms and many heavy metal ions are known to be toxic or carcinogenic. Toxic heavy metals of particular concern zinc, copper, nickel, mercury, cadmium, lead and chromium. Electrokinetic remediation deserves particular attention in soil treatment due to its peculiar advantages, including the capability of treating fine and low permeability materials, and achieving consolidation, dewatering and removal of salts and inorganic contaminants like heavy metals in a single stage. In this study, the remediation of artificially chromium contaminated soil by electrokinetic process, coupled with Eggshell Inorganic Fraction Powder (EGGIF) permeable reactive barrier (PRB), was investigated. An electric field of 2 V cm−1 was applied and was used an EGGIF/soil ratio of 30 g kg−1 of contaminated soil for the preparation of the permeable reactive barrier (PRB) in each test. Results proved that the study of chromium mobility revealed the predominance in its transportation through the soil towards the anode, due essentially to the existence of chromium in the form of oxyanions (chromate and dichromate), which confers a negative charge to the molecule. Chromium removal by electrokinetic remediation was faster in low levels of concentration and the utilization of citric acid as buffer and complexing agent allowed to maintain pH of soil below the precipitation limit for this element. It was obtained high removal rates of chromium in both experiments, especially near the anode. In the normalized distance to cathode of 0.8 it was achieved a maximum removal rate of chromium of 55, 59 and 60% in initial chromium concentration of 500 mg kg−1, 250 mg kg−1 and 100 mg kg−1, respectively. The viability of the new coupling technology developed (electrokinetic with EGGIF permeable reactive barrier) to treat low-permeability polluted soils was demonstrated. Based on the proved efficiency, this remediation technique has to be optimized and applied to real soils in order to validate it as a large-scale solution.
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Deuel, Lloyd E. E., et George H. Holliday. « Hydrocarbon Impacted Soil and Waste Remediation ». Dans SPE/EPA/DOE Exploration and Production Environmental Conference. Society of Petroleum Engineers, 2003. http://dx.doi.org/10.2118/80596-ms.

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Fels, Helmut, Stephan Becker et Rainer Pietsch. « New aspects of soil remediation technologies ». Dans European Symposium on Optics for Environmental and Public Safety, sous la direction de Tuan Vo-Dinh. SPIE, 1995. http://dx.doi.org/10.1117/12.224128.

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Karachaliou, T., et D. Kaliampakos. « Bridging mining theory with soil remediation ». Dans BROWNFIELDS 2008. Southampton, UK : WIT Press, 2008. http://dx.doi.org/10.2495/bf080091.

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Zheng, Lei, Sungho Yoon et Anne Dudek Ronan. « Remediation of Gasoline Contaminated Soil Using Surfactant Enhanced Aquifer Remediation (SEAR) ». Dans World Environmental And Water Resources Congress 2012. Reston, VA : American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412312.015.

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Wittenbach, Stuart, Steve Lower et Chris Biagi. « Use of Soil Venting for Remediation of Condensate Contaminated Soils ». Dans SPE/EPA Exploration and Production Environmental Conference. Society of Petroleum Engineers, 1999. http://dx.doi.org/10.2118/52718-ms.

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Degiorgi, Marco, Pierpaolo Usai, Nunzia Fontana, Chiara Ciampalini, Agostino Monorchio, Matteo Bertoneri, Sara Tonlorenzi et al. « Radio frequency system for thermal soil remediation ». Dans 2016 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium). IEEE, 2016. http://dx.doi.org/10.1109/usnc-ursi.2016.7588522.

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Rathod, Deendayal, et P. V. Sivapullaiah. « Electro-Kinetic Remediation of Sulphate from Soil ». Dans Geo-Chicago 2016. Reston, VA : American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784480168.022.

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Hubert J. Montas et Adel Shirmohammadi. « Modeling of Soil Remediation by Nanoscale Particles ». Dans 2004, Ottawa, Canada August 1 - 4, 2004. St. Joseph, MI : American Society of Agricultural and Biological Engineers, 2004. http://dx.doi.org/10.13031/2013.17680.

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Rapports d'organisations sur le sujet "Soil remediation"

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Manlapig, D. M., et Williamsws. Soil Remediation Test. Office of Scientific and Technical Information (OSTI), avril 2002. http://dx.doi.org/10.2172/793446.

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SKELLY, W. A. AX Tank farm soil remediation study. Office of Scientific and Technical Information (OSTI), mars 1999. http://dx.doi.org/10.2172/781595.

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Jayaweera, Indira S., Montserrat Marti-Perez, Jordi Diaz-Ferrero et Angel Sanjurjo. Water as a Reagent for Soil Remediation. Office of Scientific and Technical Information (OSTI), mars 2003. http://dx.doi.org/10.2172/808528.

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Indira S. Jayaweera, Montserrat Marti-Perez, Jordi Diaz-Ferrero et Angel Sanjurjo. WATER AS A REAGENT FOR SOIL REMEDIATION. Office of Scientific and Technical Information (OSTI), novembre 2001. http://dx.doi.org/10.2172/808964.

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Indira S. Jayaweera, Montserrat Marti-Perez, Jordi Diaz-Ferrero et Angel Sanjurjo. WATER AS A REAGENT FOR SOIL REMEDIATION. Office of Scientific and Technical Information (OSTI), mars 2001. http://dx.doi.org/10.2172/824937.

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Indira S. Jayaweera et Jordi Diaz-Ferraro. WATER AS A REAGENT FOR SOIL REMEDIATION. Office of Scientific and Technical Information (OSTI), février 2000. http://dx.doi.org/10.2172/824939.

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Wu, J. M., H. S. Huang et C. D. Livengood. Development of an ultrasonic process for soil remediation. Office of Scientific and Technical Information (OSTI), juin 1995. http://dx.doi.org/10.2172/78718.

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Patten, J. S. Review of the Vortec soil remediation demonstration program. Office of Scientific and Technical Information (OSTI), décembre 1994. http://dx.doi.org/10.2172/10121884.

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J. Hnat, L.M. Bartone et M. Pineda. INNOVATIVE FOSSIL FUEL FIRED VITRIFICATION TECHNOLOGY FOR SOIL REMEDIATION. Office of Scientific and Technical Information (OSTI), juillet 2001. http://dx.doi.org/10.2172/881861.

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Regan, A. H., M. E. Palomares, C. Polston, D. E. Rees, W. T. Roybal et T. J. Ross. In situ RF/microwave remediation of soil experiment overview. Office of Scientific and Technical Information (OSTI), septembre 1995. http://dx.doi.org/10.2172/102158.

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