Showing results for: contaminated soil Articles
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A view on the effects induced by low irradiation contamination of soil and atmospheric impact on plant populations in nature
At present, a possible radiation effect is estimated as a function of dose irradiation although it is strongly dependent more on the environmental factors. The consequences of low doses of internal irradiation linked to chronic soil contamination and of external irradiation associated with short or prolonged atmospheric impacts for plant populations in nature are analysed in this paper. The ...
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Cleanup of Contaminated Soils at Municipal Park
A municipal garden in Mandarituba, soil was contaminated with transformer oil and COPEL, the utility company was responsible for the cleanup and restoration of the contaminated soils. The company decided to use AgroRemed BR CTBA specially customized for applications in Brazil. The site was excavated and treated as biopile with AgroRemed BR CTBA. Both TPH values and VOC’s were acceptable and ...
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Compressibility of Contaminated Fine-Grained Soils
An experimental study was performed to investigate factors that control the compression index of contaminated soils and to evaluate the applicability of the correlations proposed by Skempton (1944) and Arulanandan et al. (1983) for contaminated soils. The literature search indicated that the compressibility of a soil depends on mechanical as well as physicochemical factors. The addition of ...
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BOS 200® - TEPH
Residual soil contamination from small petroleum surface spills needed to be brought under the Colorado soil standards of 500 ppm. The site was treated with Trap & Treat® BOS 200® in April 2004 and in August 2004 was submitted to the state for closure. In October, the contractor received a No Further Action letter from the State of Colorado for this ...
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Estimation of OCDD degradation rate in soil
The current concentrations of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were determined in soils contaminated with Chinese technical product sodium pentachlorophenate (Na-PCP). The estimated half-life of octachlorodioxin (OCDD) was about 14 years in contaminated soils based on the local historical record and mass balance calculation during the past 43 years (1960-2003). The ...
By IOS Press
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New Legal Framework Approval
WHAT ARE THE MOST IMPORTANT ASPECTS REGULATED UNDER RD 9/2005? • A more precise definition of CONTAMINATED SOIL based on the risks for the human health and the environment. • It is approved the list of POTENTIALLY POLLUTING ACTIVITIES (APC), susceptible of causing contamination to the soil. In this sense, the Royal Decree lists more than 100 activities which belong to all industrial ...
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Lead Soil Contamination
What is Lead Soil Contamination? The keys to successful stabilization of lead soil contamination are: using the right reagent, using the right dosage and achieving good mixing of the reagent with the waste. Lead soil contamination involves encapsulation and chemical conversion during remediation projects rendering them non-leachable to allow disposal of a non-hazardous ...
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Common Treatment Train for Radionuclides
A treatment train is the combination of different treatment technologies. A system diagram of a common treatment train for radionuclides is illustrated below. Radionuclide contaminated soil is first excavated from the contamination soil and transported to a vitrification site. During vitrification, the contaminated soil is molten at extremely high temperatures. Radionuclides are incorporated into ...
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Project - Contaminated soil and sediment
Torkapparater offers technical solutions designed for treatment of different types of contaminated soils, e.g. thermal treatment of contaminated soils at closed down petrol stations: Contaminated soil is heated in order to gasify and post combust hydrocarbons Soil contaminated by oil is indirectly heated in a rotary heater in order to gasify and recondense the oil, alternatively to post ...
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Decontamination of soil contaminated with petroleum grease
Contamination modifies the engineering properties of soil, thereby restricting its further use either as a construction material or as a supporting medium. Due to the scarcity of land, it becomes imperative to reuse the land for infrastructure developmental activities. Out of numerous soil contaminants, automobile grease is one of the most prominent. Considering the cumulative impact of ...
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Soil treatment by solvent extraction and catalytic hydrodehalogenation
We investigated the extraction of halogenated hydrophobic organic contaminants (HHOCS) from soil, and the subsequent catalytic hydrodehalogenation of extracted HHOCs. We used water/ethanol mixtures as the solvent and pentachlorophenol and 1,2,4,5–tetrachlorobenzene as target contaminants. The efficiency of extraction improved with increasing contact time and/or increasing ethanol fraction ...
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Bien Hoa, Vietnam - Case Study
In a project commissioned by the Global Environmental Facility and the United Nations Development Programme, EDL carried out a full-scale soil decontamination demonstration at a former US airbase in Vietnam. The trial successfully treated 150 tonnes of soil contaminated with Poly-Chlorinated Dibenzo-p-Dioxins and Dioxin-like Poly-Chlorinated Biphenyls; which are known to be amongst the most ...
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Brazil - updated soil contamination regulations
While Brazil has not changed its waste generator liability since adopting Law 6.938 in 1981, it has updated and altered requirements for generators. Most recently, the Brazilian National Council on the Environment (CONAMA) adopted CONAMA Resolution 420/2009, establishing guidelines and criteria for the management of contaminated sites. CONAMA Resolution provides for the creation of soil quality ...
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Government bill regulating contaminated soils in Catalonia
The region of Catalonia in Spain has developed a Government bill regulating Contaminated Soils in order to comply with both National Law 10/1998 of 21st April on Waste, and Royal Decree 9/2005 of 14th January, by which it is established the list of soil polluting activities and the standard criteria to declare a soil as contaminated. This decree is based upon the necessity that all Autonomous ...
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Surfactant–enhanced remediation of soils contaminated with petroleum hydrocarbons
An experimental programme was undertaken to reclaim the soils contaminated with petroleum hydrocarbons. Two types of locally available soils, clay with low compressibility and poorly graded sand, were chosen for the study. Both the soils were contaminated with varying percentages of used engine oil and gasoline. Anionic surfactant Sodium Dodecyl Sulphate (SDS) was used to reclaim the contaminated ...
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Database analysis of US state regulatory guidance for organic surface soil contamination
This manuscript describes a database of US state regulatory guidance values assembled to examine the guidance applied to the most commonly regulated surface soil contaminants. Guidance values were identified for 994 different contaminants, but there is considerable variability in the number of contaminants regulated by each state and in the values applied to contaminants. Guidance values for the ...
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New Contaminated Soil Legislation in Spain
Untitled Document MediTerra Consultors Ambientals, S.L. is an independent company which activity is oriented to the investigation and remediation of contaminated soils and groundwater and the performance of Environmental Audits and Due Diligences. From our experience, soil is one of the most sensitive and vulnerable contamination receptors in Spain and the growing number of ...
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New contaminated soil legislation in Spain
MediTerra Consultors Ambientals, S.L. is an independent company which activity is oriented to the investigation and remediation of contaminated soils and groundwater and the performance of Environmental Audits and Due Diligences. From our experience, soil is one of the most sensitive and vulnerable contamination receptors in Spain and the growing number of contaminated sites is jeopardizing both ...
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Titanium as an indicator of residual soil on arid-land plants
Titanium (Ti) has been suggested as a soil contamination indicator for plant samples slated for trace element analysis because it is abundant in soil but not in plants. Based on results from our survey of regional soils and plants for cesium (Cs), we sought to confirm Ti as a valid soil contamination indicator reasoning that there are three sources of Ti associated with plant samples: (i) ...
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Fighting soil contamination with XRF
Soil contamination Complying with new environmental regulations is a fast growing concern for companies and local officials tasked with ensuring that industries reduce pollution and clean up after themselves. It’s a particularly challenging issue when it comes to soil contamination It’s not always easy to detect as it silently contaminates crops and the ground water supply. XRF ...
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