Energy Sources and Related Information +

Waste matter from bituminous coal mines: Acid mine drainage refers to water pollution that results when sulfur-bearing minerals associated with coal are exposed to air and water and form sulfuric acid and ferrous sulfate.

The ferrous sulfate can further react to form ferric hydroxide, or "yellowboy", a yellow-orange iron precipitate found in streams and rivers polluted by acid mine drainage.

Acid precipitation; acid deposition: Acid rain is precipitation containing harmful amounts of nitric and sulfuric acids formed primarily by sulfur dioxide and nitrogen oxides released into the atmosphere when fossil fuels are burned.

It can be wet precipitation (rain, snow, or fog) or dry precipitation (absorbed gaseous and particulate matter, aerosol particles or dust).

Acid rain has a pH below 5.6. Normal rain has a pH of about 5.6, which is slightly acidic. The term pH is a measure of acidity or alkalinity and ranges from 0 to 14.

A pH measurement of 7 is regarded as neutral. Measurements below 7 indicate increased acidity, while those above indicate increased alkalinity.

As an energy source, such energy comes from the sun collected and stored: Active solar energy uses mechanical pumps or fans to circulate heat-laden fluids or air between solar collectors and a building.

A source of energy that is not diesel or petroleum-based: A variety of alternative fuels include:

• Methanol.
• Denatured ethanol, and other alcohols.
• Fuel mixtures containing 85 percent or more by volume of methanol, denatured ethanol, and other alcohols with gasoline or other fuels; such as, natural gas.
• Liquefied petroleum gas (propane).
• Hydrogen.
• Coal-derived liquid fuels.
• Fuels (other than alcohol) derived from biological materials (biofuels, such as soy diesel fuel).
• Electricity (including electricity from solar energy).

A motor conveyance designed to operate on an alternative source of energy: An AFV could run on compressed natural gas, methane blend, or electricity:

The vehicle could be either a dedicated vehicle designed to operate exclusively on alternative fuel or a nondedicated vehicle designed to operate on alternative fuel and/or a traditional fuel.

Concerning something that is made, or generated, by a human or caused by human activity: Anthropogenic global climate change refers to gaseous emissions that are the result of human activities, as well as other potentially climate-altering activities, such as deforestation.

A piece of equipment, commonly powered by electricity, used to perform a particular energy-driven function: Examples of common appliances include refrigerators, washing machines, dishwashers, conventional ranges/ovens and microwave ovens, humidifiers and dehumidifiers, toasters, radios, and televisions.

Appliances are ordinarily "self-contained" with respect to their functions. However, equipment, such as central heating and air conditioning systems and water heaters, which are connected to distribution systems inherent to their purposes, are not considered appliances.

A motor conveyance that operates on two different fuels, but not on a mixture of the fuels: In bi-fuel vehicles, each type of fuel is stored in a separate tank.

Any liquid source of energy obtained from a renewable biological resource suitable as a diesel fuel substitute or diesel fuel additive or extender: Biodiesel fuels are typically made from oils, such as soybeans, rapeseed, or sunflowers, or from animal tallow.

Biodiesel fuel can also be made from hydrocarbons derived from agricultural products: such as, rice hulls.

Energy created from a biological resource: Bioenergy technologies use renewable biomass resources to produce an array of energy related products including electricity, liquid, solid, and gaseous fuels, heat, chemicals, and other materials.

Bioenergy ranks second (to hydropower) in renewable primary energy production and accounts for three percent of the primary energy production in the United States.

Biomass offers tremendous opportunities to use domestic and sustainable resources to provide fuel, power, and chemical needs from plants and plant-derived materials, that is if such production does not interfere with the eating needs of global populations.

The term "biomass" means any plant derived organic matter available on a renewable basis, including dedicated energy crops and trees, agricultural food and feed crops, agricultural crop wastes and residues, wood wastes and residues, aquatic plants, animal wastes, municipal wastes, and other waste materials.

Liquid sources of energy and blending components produced from biomass feed-stocks, used primarily for transportation: Biofuel is a type of solid, gaseous, or liquid fuel, made without using petroleum, which can be used in an ordinary internal combustion engine.

Biofuels can be produced from such things as sugar cane and vegetable oil.

1. The dry weight of living organic matter in a particular ecosystem: The units of biomass are grams of organic matter per square meter.

2. Plant-derived material usable as a renewable energy source: Biomasses can be produced from wood energy crops, such as hybrid poplars and willow trees. Biomasseses can also be obtained from agricultural crops like soybeans and corn, and animal and other wastes.

Biomass is one of the two most common energy sources in the U.S. today, along with hydropower. Forms of biomass, such as wood, can be burned to produce heat and generate electricity.

Agricultural crops can be chemically converted into fuels, such as ethanol and biodiesel. These are the only known renewable liquid energy sources, and may one day replace petroleum and fossil-fuel.

Organic non-fossil material of biological origin that is a byproduct or a discarded product.

Biomass waste includes municipal solid waste from biogenic sources, landfill gas, sludge waste, agricultural crop byproducts, straw, and other biomass solids, liquids, and gases; but it excludes wood and wood-derived fuels (including black liquor), biofuels feedstock, biodiesel, and fuel ethanol.

It should be noted that some so-called biomass waste also includes energy crops grown specifically for energy production, which would not normally be considered waste.

A physical barrier constructed across a river or waterway to control the flow of or raise the level of water.

The purpose of construction may be for flood control, irrigation needs, hydroelectric power production, and/or recreation usage.

The ability of an electric current to produce work, heat, light, or other forms of energy.

Electric energy is measured in kilowatt hours.