Thermal Treatment Technologies: Pyrolysis
Pyrolysis is a process that uses heat in an oxygen starved atmosphere to treat wood pulp, paper, plastic and other hydrocarbons like the mountains of
Subject: oxygen
Transcript: [ narrator ] if it is the incomplete combustion... of chlorinated organic compounds in the presence of oxygen... that creates harmful products
Thermal Treatment Technologies: Hazardous Waste Incinerators
Because most hazardous wastes cannot be landfilled, incineration provides an alternative. Whereas municipal waste incineration must meet the requirements of the Clean Air Act, hazardous waste incineration must comply with the Resource Conservation ...
Subject: oxygen
Thermal Treatment Technologies: Municipal Waste and Reciprocating Grate Systems
One of the thermal treatment technologies that strives to make the best use of time, temperature and turbulence is the reciprocating grate incinerator, used by nearly 250 municipalities.
Subject: oxygen
Transcript: the burning refuse down a series of steps. as it tumbles, the surfaces are exposed to more air. the increase in oxygen and turbulence generated by
Food for Thought: Primary Productivity and Climate
Phytoplankton play an important if indirect role in regulating the chemistry of the ocean and the atmosphere system. They do this through their contribution to the carbon cycle, taking carbon dioxide with them when they die and sink to the deep ocea...
Subject: oxygen
Transcript: carbon dioxide and produces oxygen. By virtue of the fact that phytoplankton do That in the surface ocean, and when they die they sink To the deep ocean
Food for Thought: Primary Productivity, Carbon Dioxide and the Role of Humans
matter decomposes and sinks into the deeper layers of the coastal ocean, it uses up the available oxygen, resulting in a condition known as anoxia or lack
Subject: oxygen
Transcript: ocean. As that material then decomposes, it uses up all Of the oxygen that is in the deeper part Of the coastal ocean, causing what's known As anoxia, or
The Water Planet: Origin of Life on Earth
There is no definitive evidence that proves beyond a doubt where water originated. But wherever it came from, water did eventually cover more than two-thirds of Earth's surface. The implications of this for the formation of life on planet Earth were...
Subject: oxygen
Transcript: life? Two reasons. One, life is made out of chon-- Carbon, hydrogen, oxygen, nitrogen. Water is made out of two Of those elements-- hydrogen and oxygen
The Water Planet: Early Earth
At one time, Earth was a very different planet than it is today. Its atmosphere, in particular, bore very little resemblance to the one that we depend on for the air we breathe. It probably consisted primarily of carbon dioxide and nitrogen gas.
Subject: oxygen
Transcript: that's absent is oxygen. Oxygen, people have calculated, was absolutely-- Would have been undetectable In the early atmosphere of the earth. Today, we
Biological Treatment Technologies: Microorganisms and Metabolism
From the polar ice caps to the bottom of the sea, microorganisms that provide the backbone of biological treatment are becoming our greatest ally in the quest for a cleaner environment. The microbial kingdom is comprised of organisms ranging from s...
Subject: oxygen
Transcript: the ability to use smaller molecules... As building blocks for the molecules of life, So they take co2, or they take nitrate or oxygen, And they bring