metal contaminated soil Articles
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Metal Contaminated Soils Fixation
Treatment of Metal Contaminated Soils The EPA requires a Toxicity Characteristic Leaching Procedure (TCLP) test to determine if metal contaminated soils needs to be managed as hazardous or non-hazardous waste. Soils exhibiting hazardous characteristics need to be disposed of at a facility permitted for that material at a high cost. Soils treated in the field prior to off-site disposal can be ...
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In-Situ Treatment Case Study
Jeep Parkway – Toledo, OhioTreated the soil in situ down to 20 feet. Removal of several unknown concrete structures, removal and disposal of more than 4,000 tons of PAH and heavy metal contaminated soil, collected over 200 soil samples and water samples, and moved 7,000 cubic yards of onsite borrow to fill and cap the area. Environmental Remediation Contractor is a force for nature. We are a ...
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How to Dispose of Metal Contaminated Soil
Disposing of metal-contaminated soil should be done with caution to prevent environmental harm. The specific method of disposal may vary depending on the severity of contamination, local regulations, and available resources. Below are some general steps you can take. TDJ Group has the knowledge and expertise to aid in the treatment and disposal of metal contaminated soils. We offer a ...
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White clover nodulation index in heavy metal contaminated soils– a potential bioindicator
Received for publication January 10, 2008. The morphological effects of heavy metal stress on the nodulation ability of Rhizobium spp. and growth of white clover (Trifolium repens L.) were studied in the laboratory under controlled conditions. Fourteen topsoils were collected from an area with elevated metal concentrations (Cd, Zn, and Pb). White clover was cultivated using a specialized ...
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Bleeding sap and leaves of silver birch (Betula pendula) as bioindicators of metal contaminated soils
Bleeding sap of Betula pendula contained high levels of manganese on soils near ore outcrops and on acid soils, whereas high zinc levels were restricted to metal-mining and metal-smelting areas. The relationships between metal contents of bleeding sap and those of the soils were dependent on the kind of chemical soil extraction. Copper and zinc sap levels had a significantly positive correlation ...
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Common Treatment Train for Inorganics
A treatment train is the combination of different treatment technologies. A system diagram of a common treatment train for inorganics is illustrated below. Metal contaminated soil is treated using the combination of electrokinetics and phytoremediation. Electrokinetics is used to remove metals from deep soil and ground water. A low density direct current is applied to mobilize charged species, ...
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Risk assessment of heavy metal contaminated soil in the vicinity of a lead/zinc mine
Heavy metal contamination of soils through anthropogenic activities is a widespread and serious problem confronting scientists and regulators throughout the world. In this study we investigated the distribution, chemical species and availability of lead, zinc, cadmium and copper in nine surface (0 to 20 cm) soils from near an abandoned lead/zinc mine tailings located in Shaoxing, Zhejiang, China. ...
By IOS Press
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Heavy Metals Contaminated Soils Site Characterization
What is Heavy Metals Contaminated Soils Site Characterization? The EPA requires a Toxicity Characteristic Leaching Procedure (TCLP, EPA Method 1311) test to characterize heavy metals contaminated soils and determine how they should be disposed. Soils exhibiting hazardous characteristics, typically leaching metals at greater than 5.0 mg/L, need to be disposed of at a permitted hazardous waste ...
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Determination of adsorption efficiency based on cation exchange capacity related to red earth, bone meal and pulverised fly ash as ameliorants to lead contaminated soils
Efficient treatment strategies to reduce the toxicity of metal contaminated soil using cost effective techniques such as naturally available ameliorants and industrial waste have emerged. Three easily available amendments were determined: Bone meal, red earth/mud and pulverised fly ash (PFA). The application of ameliorants offered a possible alternative in situ remediation of contaminated sites ...
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Removal of Cd, Pb, Cu and Zn from real contaminated soils with fresh and regenerated Na2EDTA
The leaching efficiencies using both fresh Na2EDTA and regenerated Na2EDTA on the remediation of contaminated soils from Chenzhou lead–zinc mining area located in southern Hunan Province (southern China) were investigated. The total concentrations of Cd, Pb, Cu and Zn in both contaminated soils exceeded the maximum permissible limits set by Ministry of Environmental Protection for soil. Under the ...
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Innovative approach to contaminated soil phytoremediation: Heavy metal phytoextraction using energy crops
Heavy metal accumulation potential in the biomass and different plant parts of the selected species of energy crops cultivated on contaminated soil was evaluated. Phytoextraction potential, biomass yield and qualitative parameters of bioenergy plants grown on heavy metal contaminated soil has been measured. Finally heavy metal influence on biomass utilization possibilities, energy recovery and ...
By Biovala
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Effect of warfare waste on soil: a case study of Gallipoli Peninsula (Turkey)
Gallipoli is a small town on the European side of the Dardanelles Strait, in Turkey. More than 450,000 soldiers gave their lives on the Gallipoli Peninsula (Gallipoli Campaign) over a nine-month period during World War I. In that war, many naval and landing bombs were exploded. The ingredients of these bombs may cause heavy metal contamination in soils. An environmental geochemical investigation ...
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Changes of toxic metals during biological stabilization and their potential ecological risk assessment
With various disadvantages of pollution control technologies for toxic metal-contaminated soil, we mixed contaminated soil with sludge for in situ composting to stabilize toxic metals, so plants are enriched to take up the toxic metals. When simulating the above, we added toxic metal solution into sewage sludge, and then composed it with steel slag to determine inhibition of the availability ...
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Plant diversity in relation to anthropogenic trace metals in soils of selected sites in Nigeria's Guinea Savanna
Studies on the contributions of anthropogenic activities to trace metal contamination in the soils of the West African sub-region, and their effects on the biodiversity of the area, are scanty. The effect of the trace metal content of soil, contributed by some anthropogenic activities (cultivation, vehicular traffic and industrial activity), on the plant diversity and vegetation structure in each ...
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Heavy metal pollution of soils along North Shuna-Aqaba Highway, Jordan
Attention to heavy metal contamination associated with highways or motorways has risen in the last decades because of the associated health hazards and risks. The present study analysed the metal content in soil samples of one of the main highways along the western part of the Jordanian border, the North Shuna–Dead Sea–Aqaba Highway. The metals analysed were Pb, Zn, Cd, Co and Ni. In the samples ...
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Toxicity assessment of diesel and metal contaminated soils through elutriate and solid phase assays with the slime mould, Dictyostelium discoideum
A suite of organisms from different taxonomical and ecological positions are needed to assess environmentally relevant soil toxicity. We herein present a new bioassay based on Dictyostelium that is aimed at integrating slime moulds into such a testing framework. Toxicity tests on elutriates and the solid phase developmental cycle (DDDC) assay were successfully applied to a soil spiked with a ...
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The investigation of arsenic and heavy metal concentrations in soil, water and crops around abandoned metal mines
Soils, water and crops around abandoned metal mines can be contaminated by heavy metals from adjacent tailings and waste rocks accumulated during mining operations. The results indicate that the As, Zn, Cd, and Cr concentrations exceed the soil contamination standard in many soil samples of the nearby farmlands as well as the tailings sites. In the case of water quality, the As concentrations in ...
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Heavy Metal Fixation Reagent for Soil - What is Heavy Metal Fixation?
Heavy Metal Fixation can be done by a chemical process that will prevent leaching of metals into the ground water during soil remediation projects. Different reagents are available which can stabilize lead, however different reagents required different cure times and addition of moisture, produce different amount of bulking, and produce material with different strengths, densities and other ...
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Contaminated Soil Fixation
Contaminated soil is one that has heavy metals present within the project site. The EPA requires a Toxicity Characteristic Leaching Procedure (TCLP) test to determine if metal contaminated soil needs to be managed as hazardous or non-hazardous waste. Soils exhibiting hazardous characteristics need to be disposed of at a facility permitted for that material at a high cost. The alternative is to ...
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Effects of single and combined heavy metals and their chelators on aphid performance and preferences
When present at elevated levels in the environment, heavy metals are toxic for most organisms. However, so‐called hyperaccumulator plants tolerate heavy metals and use chelators for their internal long‐distance transport. Thus, phloem‐sucking insects may come in contact with the chelated metals. In this study, the effects of individual and combined heavy metals, zinc and cadmium, as well as of ...
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