soil pollutant Articles
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Understanding environmental pollution concepts: a case study using school students in Argentina and Puerto Rico
This paper explores concepts about air, water and soil pollution that students of grades 7?9 have in Argentina and Puerto Rico. A structured questionnaire was used in the investigation. A quantitative analysis was carried out to characterise the occurrence and frequency of conceptual errors, and to analyse their decrease with an increase in the educational level of the students. The results ...
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Surfactants enhanced recovery of endosulfan from contaminated soils
Soil pollution due to hydrophobic organic compounds is a wide environmental problem. Extensive use of endosulfan in cotton and paddy to meet the needs of the growing population has led to contamination of soil and other ecosystems. Endosulfan is hydrophobic, highly toxic to aquatic and human population and persists in soil for more than a year. To overcome the problem of hydrophobicity and ...
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Book Review: Soil Pollution: Origin, Monitoring and Remediation
Soil Pollution: Origin, Monitoring and Remediation, by Ibrahim A. Mirsal. Springer-Verlag, 2004. 252pp. ISBN 3-540-40143-1Keywords: book ...
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Oulu, Rusko 2016- Case Study
Waste center polluted soil from various customers Pollutants: Oil and PAH Levels of pollutants on average: Oil 50000 mg/kg, PAH 3000 mg/kg Total amount of thermally treated soil 60 000 t Target after treatment: Oil 50 mg/kg, PAH 30 mg/kg ...
By Savaterra Oy
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Potential for integrated risk assessment in a rapidly developing country
In Kuwait, risk assessment became an issue during the Iraq/lran war when several industrial and other activities became targets for hostile actions. With the torching of the oil-wells in 1991 and the resulting severe air and soil pollution, assessment of the risk was of prime importance. The health impacts and risk assessment were further addressed when the Environmental Protection Council ...
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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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Treatment of metal ions and metalchelate complexes in water with biologically produced H2S
The possibility to precipitate Pb and Cu as metal sulphides has been investigated. The metals are present as metal chelates, a situation that will appear after soil washing for remediation of polluted soil. Sulphide for the precipitation step is obtained via a bioreactor containing Sulphate–Reducing Bacteria (SRB). The effects on the precipitation process for copper and lead were studied in the ...
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Herbaceous energy crops for cleaning of soils contaminated by petroleum hydrocarbons
There is a possibility to create a sustainable method of biomass growth in mid-low contaminated sites soil system using phytoremedial methods in biomass engineering. Main aim of the research was to assess herbaceous plants abilities of clean the soil contaminated by oil hydrocarbons. Results show, that the proper selection of herbaceous energy crops can reach high level of sites treatment at ...
By Biovala
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Adaptative methodology of sustainability indicators management by ontology
The growth of many sectors in modern society has increased the degradation of the environment. Consequently, it generates great ecological unbalance, enhancing the importance of sustainable development, since it stimulates productivity, job and income creation, while reduces the rates of deforestation, erosion and water and soil pollution. In this context, sustainability indicators can be useful ...
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Environmental problems of Canakkale City and solutions
Environmental problems are getting more serious in almost every region of Turkey. They occur for many reasons and take many forms. Canakkale City has potential for both domestic and international tourism, because of its rich historical past and natural and cultural resources. However, in common with other parts of the country, Canakkale faces environmental problems such as air pollution, water ...
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Decreased metal accumulation in passerines as a result of reduced emissions
Technological advances in industrial processes have resulted in reduced atmospheric emissions from metal industries all over the globe, but the response of the environment is not well known. The authors studied metal (As, Cd, Cu, Ni, Pb, and Se) accumulation in passerine birds (pied flycatcher, Ficedula hypoleuca, and great tit, Parus major) following almost 20 years of reduced metal emissions ...
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Stability and environmental geochemical profile of toxic heavy metals in soils around a crude oil refinery
Soil samples were taken near oil refinery activities, bulk and fractionated heavy metal contents, as well as other physico-chemical characteristics were measured. The reported results indicate that the enrichment factors of the measured heavy metals were 3.9, 1.8, 1.3, 23.7 and 52.5 for lead, nickel, zinc, cadmium and mercury, respectively. The samples can be considered to be extremely ...
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Microbial Degradation of Petroleum Hydrocarbon Contaminants: An Overview
Introduction Petroleum-based products are the major source of energy for industry and daily life. Leaks and accidental spills occur regularly during the exploration, production, refining, transport, and storage of petroleum and petroleum products. The amount of natural crude oil seepage was estimated to be 600,000 metric tons per year with a range of uncertainty of 200,000 metric tons per year ...
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Treating a floating layer with Thermopile
Thermopile©, (patented by Deep-Green) is a new thermal treatment technology which, without the need for excavation, uses the desorption of volatile products from polluted soils. The technique uses the combustion gases (in quasi closed-loop gas circuit) to heat the soil and recuperate the contaminant. The circuit consists of a unit of combustion, a fan, a network of pipes and a purge. The ...
By Deep Green
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Plant physiology processes associated with the application of phytotechnologies in the removal of hydrocarbons
Since the initiation of the industrial age with its parallel reliance on the utilisation of the hydrocarbon reserves on earth, the biosphere has been increasingly exposed to an ever expanding chemical variety of anthropogenic origin. Phytoremediation is an environmental technology for the cleaning of polluted soils using plants that needs the knowledge about transport and fate of pollutants for ...
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Effects of climate change on the toxicity of soils polluted by metal mine wastes to Enchytraeus crypticus
The present study aimed to assess the effects of climate change on the toxicity of metal‐polluted soils. Bioassays with Enchytraeus crypticus were performed in soils polluted by mine wastes (mine tailing, forest and watercourse) and under different combinations of temperature (20 and 25 °C) and soil moisture content (50 and 30% of the soil water holding capacity). Survival and reproduction ...
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Cleanup levels at an oil distribution and storage station in eastern central Mexico determined from a health risk assessment
The subsoil of an oil storage and distribution station located in eastern central Mexico was characterised in terms of some fuel fractions and metals. The site was found to be contaminated mainly with total petroleum hydrocarbons (TPHs) at a concentration higher than that legislated in Mexico. The presence of BTEX (benzene, toluene, ethylbenzene and xylenes) and 11 of the 16 USEPA polynuclear ...
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Distribution patterns of lead accumulation in roadside soils: a case study from Erzurum, Turkey
Surface soils along roadsides or near to industrial areas may contain high concentrations of lead that adversely affect plant production. Lead contamination of roadside soils is generally attributed to the exhaust emissions of automobiles operating with leaded gasoline. The objectives of this study were to determine the relationships between lead accumulation in soils and the distance from the ...
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The geostatistical reassessment of soil contamination with lead in metropolitan Warsaw and its vicinity
Soils of urban agglomerations are often exposed to pollution with lead, which high concentrations are frequently observed. The main sources of lead contamination are airborne particulate depositions and exhaust fumes. The study area encompassed Warsaw city, outskirts and fragments of Kampinoski National and Mazowiecki Landscape Parks. The scope of the study was to analyse the spatial distribution ...
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Metals in the environment: design of HRA Heavy Metals, an online system for assessing human health risks
HRA Heavy Metals is a program designed for Health Risk Assessment (HRA) by determining human exposure to environmental metals for a specific subject. This online program is used to establish if the presence of metals in the area where the individual inhabits exceeds the safety limits established by the current legislation. The use of HRA Heavy Metals requires information on metal concentrations ...
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