Oxygen Depletion
A type of water pollution, oxygen depletion destroys the natural balance of water and makes bacteria thrive and in the process kill fish and other wildlife.
Biological Oxygen Demand (BOD)
An indirect measure of the concentration of biologically degradable material present in organic wastes. It usually reflects the amount of oxygen consumed in five days by biological processes breaking down organic waste.
Oxygen - O2, is found on Earth as a gas and constitutes about 20.8% of the air we breathe. Elemental molecular oxygen consists of two oxygen atoms bonded together.
Oxygen system
injects oxygen into liquid effluent; increases aerobic microbial activity and the rate of removal of BOD, COD and ammoniacal nitrogen ...
Oxygen depletion: The reduction of the dissolved oxygen level in a water body.
Ozonation: A new technology using a form of oxygen, instead of chemicals, to treat cooling water.
Oxygen
A gas that has no colour or smell. There is a lot of it in the atmosphere and vital for life.
Oxygenated Solvent: An organic solvent containing oxygen as part of the molecular structure. Alcohols and ketones are oxygenated compounds often used as paint solvents.
Oxygenated Fuels
Gasoline that has been blended with alcohols or ethers that contain oxygen in order to reduce carbon monoxide and other emissions.
Oxygenated Solvent ...
Oxygen Demand: materials such as food waste and dead plant or animal tissue that use up dissolved oxygen in the water when they are degraded through chemical or biological processes.
Oxygenated Fuel (oxyfuel) - A special type of gasoline, which burns more completely than regular gasoline in cold start conditions; more complete burning results in reduced production of carbon monoxide, a criteria air pollutant.
Oxygenate: An organic molecule that contains oxygen. Oxygenates are typically ethers and alcohols.
Oxygen Cycle the continuous movement of oxygen. Oxygen is a major and vital component of all living matter. Most comes from the process of photosynthesis carried out by plants.
Oxygen Deficient Atmosphere: An atmosphere with an oxygen content below 19.5% by volume.
P ...
Oxygen demand
The need for molecular oxygen to meet the needs of biological and chemical processes in water, even though very little oxygen will dissolve in water, it is extremely important in biological and chemical processes
Palustrine ...
mono-oxygenase
mixed-function oxidase
Enzyme that catalyses reactions between an organic compound and molecular oxygen in which one atom of the oxygen molecule is incorporated into the organic compound and one atom is reduced to water; ...
Oxygen O a common gaseous element, occurring naturally in the air, water, and most minerals and organic substances, essential to the reciprocal processes of plant and animal life.
Oxygen-Demanding Material
Anything that can be oxidized in the receiving water resulting in the consumption of dissolved molecular oxygen.
Oxygenated fuel/Oxyfuel ...
oxygen, removal of hydrogen, or the removal of electrons
from an element or compound. In the environment, organic
matter is oxidized to more stable substances. The opposite ...
The oxygen freely available in water, vital to fish and other aquatic life and for the prevention of odours. DO levels are considered a most important indicator of a water body's ability to support desirable aquatic life.
Argon-Oxygen Decarbonization
AOML
Atlantic Oceanographic and Meteorological Laboratory ...
O2 (See oxygen)
O3 (See ozone)
OECD (See Organization for Economic Co-operation and Development) ...
Chemical oxygen demand (COD) The amount of oxygen required to oxidize any organic matter in the water using harsh chemical conditions.
...
Chemical Oxygen Demand (COD)- A measure of the oxygen required to oxidize all compounds, both organic and inorganic, in water.
Dissolved Oxygen: Oxygen dissolved in water. The amount depends on temperature of the water, plant photosynthesis, plant and animal respiration, and physical aeration caused by tumbling. Measured in parts per million (mg/L).
Dissolved Oxygen (DO)
Oxygen that is freely available in water to sustain the lives of fish and other aquatic organisms. ...
DISSOLVED OXYGEN CONTENT This is an important means of measuring the 'health' of a stretch of river or quantity of water by checking the concentration of oxygen. It is usually measured in mg/l (milligrams per litre).
Biological Oxygen Demand (BOD)- An indirect measure of the concentration of biologically degradable material present in organic wastes. It usually reflects the amount of oxygen consumed in five days by biological processes breaking down organic waste.
chemical oxygen demand (COD). An indirect measure of the amount of oxygen used by inorganic and organic matter in water.
available oxygen The quantity of dissolved oxygen available for oxidation of organic matter in a body of water.
available A quantity that can be used to produce some result.
BIOLOGICAL OXYGEN DEMAND (BOD) The amount of oxygen needed for aerobic microorganisms to function in organic-rich water such as sewage.
BIOLOGICAL TREATMENT Technology that uses bacteria to consume waste/ organic materials.
Requiring air or oxygen, used in reference to decomposition processes that occur with the inclusion of oxygen
Alloy ...
Having no molecular oxygen in the environment. Growing in the absence of molecular oxygen such as anaerobic bacteria. Occurring in the absence of molecular oxygen as in a biochemical process.
angular cobbly ...
Acid Rain Rain or any form of precipitation of dilute solutions of strong mineral acids, created by the mixing in the atmosphere of pollutants, typically sulfur dioxide and nitrogen oxides compounds, with naturally occurring oxygen and water ...
Fire triangle:the combination of three elements required for any fire: fuel, oxygen, and heat. Firejumper:a specialized firefighter who parachutes to strategic locations from airplanes to battle wildfires.
the process during which green plants use chlorophyll, sunlight, water, and carbon dioxide to create water, oxygen, and carbohydrates such as starches, sugars, and waxes. Photosynthesis is the primary source of energy in the global ecosystem.
Aerobic decomposition The process of breakdown of organic molecules to simple inorganic constituents when oxygen is in free supply.
secondary treatment Stage of wastewater treatment wherein bacteria are used to break down organic materials and significantly reduce biochemical oxygen demand.
photosynthesis The manufacture by plants of carbohydrates and oxygen from carbon dioxide and water in the presence of chlorophyll with sunlight as the energy source. Oxygen and water vapor are released in the process.
This frees them to join with the oxygen in the air. The carbon then becomes carbon dioxide, CO₂ , a greenhouse gas. The hydrogen joins with the oxygen in the air to form water, H₂O .
Add bog plants, water lily, and oxygenating plants. Pot plants in heavy soil in plastic pots and weight down with stones before adding to the water. It is not necessary to dechlorinate the water before adding the plants.
RuBP carboxylase can also function as an oxygenase, meaning it can catalyze the reaction between RuBP and oxygen. When the enzyme functions as an oxygenase no carbon is fixed and CO2 is released in a process known as photorespiration.
Ozone consists of three atoms of oxygen bonded together in contrast to normal atmospheric oxygen which consists of two atoms of oxygen.
Also, the atmosphere back then contained very little oxygen. It was a very different world—a world without people or the kinds of plants and animals that thrive in today's climate.
Fuel Cell - An electrochemical device in which hydrogen is combined with oxygen to produce electricity with heat and water vapor as by products. Natural gas is often used as the source of hydrogen with air as the source of oxygen.
Under aerobic conditions molecular oxygen is the terminal electron acceptor. Under anaerobic conditions a variety of terminal electron acceptors may be used.
In the stratosphere (the atmospheric layer 7 to 10 miles or more above the earth's surface) ozone is a natural form of oxygen that provides a protective layer shielding the earth from ultraviolet radiation.
Aerobe-Organism that needs oxygen to live.
Agency for Toxic Substances and Disease Registry (ATSDR)-An agency of the Department of Health and Human Services, ...
Trees and Plants Absorb Carbon Dioxide and Produce Oxygen
Environmentalists cite this natural form of carbon sequestration as a key reason to preserve the world's forests and other undeveloped lands where vegetation is abundant.
ozone - a naturally occurring, highly reactive gas comprising triatomic oxygen formed by recombination of oxygen in the presence of ultraviolet radiation.
Aeration Technique that is used with water treatment that demands oxygen supply, commonly known as aerobic biological water purification.
better than bare ground, providing groundwater recharge; soil microbes purify water from residential septic leech fields and prevent the spread of human disease; and photosynthesis removes carbon dioxide from the atmosphere and produces the oxygen ...
Ozone (O3) - A naturally occurring, highly reactive, irritating gas comprising triatomic oxygen formed by recombination of oxygen in the presence of ultraviolet radiation.
It is accomplished by bringing together waste, bacteria, and oxygen in trickling filters or in the activated sludge process.
Carbon Dioxide (CO2): An atmospheric gas, composed of carbon and oxygen, that is a major component of the carbon cycle.
Volatile organic compounds (VOCs) - Organic chemicals containing carbon, oxygen, hydrogen, chlorine, and other atoms. Volatile chemicals produce vapors readily.
Requiring the absence of oxygen [compare with aerobic].
Analyte
A substance measured in the laboratory. A chemical for which a sample (such as water, air, or blood) is tested in a laboratory.
Aerobic: refers to the presence of oxygen
Algae: an evolutionarily diverse group of non-vascular plants that lack structural complexity, that do not develop as embryos with covering provided by parent; ...
The composition will depend on, among other things, the fuel; the temperature of burning; and whether air, oxygen or another oxidizer is used. In simple cases the combustion gases are carbon dioxide and water.
Oxidation: A substance containing oxygen that reacts chemically to produce a new substance.
Oxidation: A reaction in which oxygen combines with another substance.
Ozone (O3): A very reactive oxidant containing three atoms of oxygen.
They can affect water quality adversely by lowering the dissolved oxygen in the water. They are food for fish and small aquatic animals. However, when algae exists in excess, it takes away oxygen from the water, thus killing all life.
 See also: Water, Air, Environment, Organic, Waste
|
