Radon gas in the home is a major source of public radiation exposure and an established cause of lung cancer. A range of techniques are available to reduce high indoor radon concentrations in homes. Information on some 2,700 radon remediation projects has been analysed with the aim of identifying the factors that influence the performance of various remediation methods, including the specific r...

The economic implications of regulations governing radon gas level identification and remediation in buildings are poorly understood, and attempts to address these issues have been criticised for lack of comparability. It is imperative therefore that a general model for the economic evaluation of radon remediation programmes is adopted to ensure comparability between studies and settings and to...

The uncontrolled use of chemicals, urban wastes, nuclear resources, mining, petrochemicals and disposal sewage sludge only a few anthropogenic activities that have contributed to the rapid industrialization severe heavy metal contamination soils waterways. Both inorganic organic pollutants, such as metals, pesticides, petroleum hydrocarbons, polycyclic aromatic can impact composition functional...

As noted in the Interstate Technology & Regulatory Council (ITRC) Remediation Process Optimization (RPO) Team’s first technical regulatory guidance document, Remediation Process Optimization: Identifying Opportunities for Enhanced and More Efficient Site Remediation (ITRC 2004), federal, state, and private-sector organizations will continue—for the foreseeable future—to spend billions of dollar...

Passive site remediation is a new concept proposed for non-disruptive mitigation of liquefaction risk at developed sites susceptible to liquefaction. It is based on the concept of slow injection of stabilizing materials at the edge of a site and delivery of the stabilizer to the target location using the natural groundwater flow. Stabilizer candidates need to have long controllable gel times an...

Increasing water scarcity in many developing countries is forcing investments into remediation of water quality at the basin or sub-basin scale in order to increase water availability. Remediation decisions involving complex aquatic environments are often made in data-poor and knowledge-poor situations. Remediation objectives are often poorly articulated, raise unrealistic expectations, and can...

supercritical fluid extraction (scfe) is a soil remediation technology. at present, only a few companies are using from this method, all of which are technical based on conventional methods of extraction such as soilex solvent extraction. because of the hard enforcement of environmental conservation law, using green technology seems imperative. this paper endeavors to carry out the feasibility ...

The US Environmental Protection Agency (EPA) estimates that exposure to residential radon causes 7,000 to 30,000 lung cancer deaths per year. The EPA has provided extensive technical analysis of and support for their recommended policy response of remediating all homes above a threshold level of radon, but these and other benefit-cost analyses typically do not consider many important dimensions...

We present data of the time-evolution of a remediation approach on a marine shore tailings deposit by the implementation of an artificial wetland. Two remediation cells were constructed: one in the northern area at sea-level and one in the central delta area (above sea-level) of the tailings. At the beginning, the “sea-level” remediation cell had a low pH (3.1), with high concentrations of diss...

BACKGROUND Cognitive impairments are a core feature in schizophrenia and are linked to poor social functioning. Numerous studies have shown that cognitive remediation can enhance cognitive and functional abilities in patients with this pathology. The underlying mechanism of these behavioral improvements seems to be related to structural and functional changes in the brain. However, studies on n...