According to Cornell University, bioremediation is the use of biological organisms to help clean contaminated or polluted environmental sites, such as the site of an oil spill. In nature, many biological organisms contribute to the cleanup of pollutants through a process called biodegradation. Bioremediation encourages that natural process, as it employs biological organisms to solve environmental problems.Continue Reading
According to Wikipedia, bioremediation includes phytoremediation, which uses plants to reduce and remove pollutants, and bioventing, which enhances the activity of microorganisms by increasing the flow of oxygen. Other examples of bioremediation include bioleaching, landfarming, composting, bioaugmentation, rhizofiltration and biostimulation.
Wikipedia explains that bioremediation uses naturally occurring organisms to break down hazardous substances into less hazardous substances. Bioremediation may occur on its own, or may only effectively occur through purposeful intervention. Cornell University states that bioremediation provides techniques for cleaning pollution that may be safer and more cost effective than alternative solutions, such as incineration of contaminated materials or landfills to contain hazardous waste .
Bioremediation often involves ways to enhance the growth of pollution-eating microbes which already exist at the contamination sites; however, sometimes specialized microbes are added to degrade the contaminants. Both of these methods have the advantage of not requiring large quantities of soil, sediment or water to be removed or relocated before it can be treated.Learn more about Pollution
Environmental remediation is the removal of contaminants from soil, water, air or sediment, typically after a spill or other industrial accident. Remediation removes the toxic materials, allowing the affected area to become habitable and safe again. For instance, a nuclear accident may leave small radioactive particles mixed in with soil and water that can threaten health and life if not filtered out and removed.Full Answer >
Primary pollutants are those substances directly emitted into the atmosphere that may cause harm to living organisms or upset the natural balance of nature. Examples of primary pollutants include carbon monoxide, sulfur oxides, dust, gases produced when burning fossil fuels and highly reactive organic compounds.Full Answer >
Effects of pollution on the Earth include environmental deterioration, impacts on the health of living organisms, global warming, depletion of the ozone layer and reduced efficiency or infertility of farm lands and crop fields. The sources of pollution vary widely, and so do its effects. Pollution affects all areas of the Earth, including the water, soil and atmosphere, on microscopic and macroscopic levels, causing immediate harm or long-term damage.Full Answer >
Types of soil pollution include agricultural soil pollution, soil pollution by industrial discharges and solid wastes, and pollution due to urban activities.Soil is sometimes polluted with substances including misplaced chemicals at higher concentrations that may have significant impact on humans and other living organisms.Full Answer >