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Once a site is suspected of being contaminated there is a need to assess the contamination. Often the assessment begins with preparation of a Phase I Environmental Site Assessment. [8] The historical use of the site and the materials used and produced on site will guide the assessment strategy and type of sampling and chemical analysis to be ...
Bioventing is an on site remediation technology that uses microorganisms to biodegrade organic constituents in the groundwater system. Bioventing enhances the activity of indigenous bacteria and archaea and stimulates the natural in situ biodegradation of hydrocarbons by inducing air or oxygen flow into the unsaturated zone and, if necessary ...
Bioremediation techniques can be classified as (i) in situ techniques, which treat polluted sites directly, vs (ii) ex situ techniques which are applied to excavated materials. [8] In both these approaches, additional nutrients, vitamins, minerals, and pH buffers are added to enhance the growth and metabolism of the microorganisms.
Recently constructed wetland regeneration in Australia, on a site previously used for agriculture Regenerated habitat for the superb parrot on the abandoned Boorowa railway line Land rehabilitation as a part of environmental remediation is the process of returning the land in a given area to some degree of its former state, after some process ...
Phytoremediation technologies use living plants to clean up soil, air and water contaminated with hazardous contaminants. [1] It is defined as "the use of green plants and the associated microorganisms, along with proper soil amendments and agronomic techniques to either contain, remove or render toxic environmental contaminants harmless". [2]
Bioremediation techniques used in the Exxon Valdez spill included nitrogen and phosphorus seeding along coastline increasing available nutrients for indigenous petroleum degrading microorganisms doubling rates of decomposition. [13] Across all remediation techniques less than ten percent of the oil released from Exxon Valdez tanker was ...
Acquisition, adaptive re-use, and disposal of a brownfield site requires advanced and specialized appraisal analysis techniques. For example, the highest and best use of the brownfield site may be affected by the contamination, both before and after remediation. Additionally, the value should take into account residual stigma and potential for ...
It is most effective when used as a pair with other techniques like advanced oxidation or phytoremediation. [28] The effectiveness of soil washing varies based on cleaning agents, pH levels, and the types of pollutants present. [28] Vitrification has been studied, and shows potential for remediating large quantities of lead and zinc. [29]