Natural biodegradation definition

Natural biodegradation means in-situin situ biological processes such as aerobic respiration, anaerobic respiration, and cometabolism, that occur without human intervention and that break down hazardous substances into other compounds or elements. The process is typically a multiple step process and may or may not result in organic compounds being completely broken down or mineralized to carbon dioxide and water.
Natural biodegradation means biodegradation that occurs without human intervention. See definition of “biodegradation.”

Examples of Natural biodegradation in a sentence

  • Natural biodegradation of contaminants tends to be rate limited due to limitations on the biological processes.

  • In addition to other requirements, the Stormwater Management rules establish design and performance standards for groundwater recharge, runoff quantity, and runoff quality, including the reduction of total suspended solids and nutrients in post construction stormwater runoff.

  • Natural biodegradation under Alternative 2 is an irreversible treatment process that would reduce the mass and concentration of contaminants.

  • P Natural biodegradation may result in the complete destruction of contaminants in- situ.P May be used in conjunction with, or as follow-up to, active remedial measures.P Much less effective where TPH concentrations in soil are high (> 20,000 to 25,000 mg/kg).

  • Natural biodegradation is therefore a very important process for the reduction of the potential effects of PW compounds in the seawater column.

  • The land is managed for informal recreation has a football kick-about goal and is used by dog walkers.

  • In this nutrient-poor environment, Natural biodegradation processes were demonstrated to be active in the attenuation of this chlorinated solvent plume.

  • Natural biodegradation of the hydrocarbons creates reducing conditions, which increases the solubility of metals, such as manganese and iron, from the well casing or aquifer sediment.

  • Natural biodegradation (mineralization or transformation) of a wide range of hydrocarbons, including polycyclic aromatic hydrocarbons (PAHs) and aliphatic and aromatic compounds, occurs in various extreme habitats.

  • Natural biodegradation processes associated with the No Action and Natural Attenuation alternatives (Alternatives 1 and 4) will reduce the toxicity of ground water contaminants via natural biodegradation processes occurring within the Plume.

Related to Natural biodegradation

  • Diatomaceous earth filtration means a process resulting in substantial particulate removal in which a precoat cake of diatomaceous earth filter media is deposited on a support membrane (septum), and while the water is filtered by passing through the cake on the septum, additional filter media known as body feed is continuously added to the feed water to maintain the permeability of the filter cake.

  • High global warming potential hydrofluorocarbons means any hydrofluorocarbons in a particular end use for which EPA’s Significant New Alternatives Policy (SNAP) program has identified other acceptable alternatives that have lower global warming potential. The SNAP list of alternatives is found at 40 CFR part 82, subpart G, with supplemental tables of alternatives available at (http://www.epa.gov/snap/ ).

  • chemical tanker means a ship constructed or adapted and used for the carriage in bulk of any liquid product listed in chapter 17 of the International Bulk Chemical Code;

  • Acute toxicity means concurrent and delayed adverse effects that result from an acute exposure and occur within any short observation period, which begins when the exposure begins, may extend beyond the exposure period, and usually does not constitute a substantial portion of the life span of the organism.

  • Nitrogen oxides means nitric oxide and nitrogen dioxide, expressed as nitrogen dioxide (NO2);

  • Natural radioactivity means radioactivity of naturally occurring nuclides.

  • Corrosion inhibitor means a substance capable of reducing the corrosivity of water toward metal plumbing materials, especially lead and copper, by forming a protective film on the interior surface of those materials.

  • COVID-19 Pandemic means the SARS-Cov2 or COVID-19 pandemic, including any future resurgence or evolutions or mutations thereof and/or any related or associated disease outbreaks, epidemics and/or pandemics.

  • Infiltration means water other than wastewater that enters a sewer system (including sewer system and foundation drains) from the ground through such means as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished from, inflow.

  • Exfiltration means any unauthorized release of data from within an information system. This includes copying the data through covert network channels or the copying of data to unauthorized media.

  • Anaerobic digestion ’ means a controlled process involving microbial decomposition of organic matter in the absence of oxygen ;

  • Biological Samples means any physical samples obtained from Study Participants in accordance with the Protocol for the purposes of the Study.

  • Total tetrahydrocannabinol means the sum of the percentage by weight of tetrahydrocannabinolic acid multiplied by eight hundred seventy-seven thousandths plus the percentage of weight of tetrahydrocannabinol.

  • aerodrome means a defined area on land or water (including any buildings, installations and equipment) intended to be used either wholly or in part for the arrival, departure and surface movement of aircraft;

  • Chemical agent shall mean any compound which, when suitably disseminated, produces incapacitating, damaging or lethal effects on people, animals, plants or material property.

  • Natural attenuation means the reduction in the con- centration and mass of a substance, and the products into which the substance breaks down, due to naturally occurring physical, chemical and biological processes.

  • Low-level radioactive waste or “waste” means radioactive material that consists of or contains class A, B, or C radioactive waste as defined by 10 C.F.R. 61.55, as in effect on January 26, 1983, but does not include waste or material that is any of the following:

  • CO2 means carbon dioxide.