Tag: pollution

  • Metal Residues 

    Metal Residues  Metal residues are trace amounts of toxic metals, such as lead, mercury, and cadmium, that are released into the environment through industrial activities, waste disposal, or the burning of fossil fuels. These metals can accumulate in the air, soil, and water, contributing to pollution. They pose significant health risks, including neurological damage, kidney…

  • Nitrogen Oxides

    Nitrogen Oxides Nitrogen Oxides (NOx) is a group of reactive gases primarily composed of nitric oxide (NO), a colorless, odorless gas, and nitrogen dioxide (NO₂), a reddish-brown gas with a pungent odour. NO forms during high-temperature combustion processes and reacts with oxygen or ozone in the air to create NO₂. NOx contributes to air pollution,…

  • Volatile Organic Compounds

    Volatile Organic Compounds Volatile Organic Compounds (VOCs) are organic chemicals that easily vaporize into the air at room temperature, contributing significantly to air pollution. VOCs include such compounds as methane, benzene, xylene, propane and butane. VOCs are emitted by various sources, including industrial processes, transportation, and agriculture (ruminants and cultivation). They play a major role…

  • Sulfur oxides

    Sulfur oxides Sulfur oxides (SOx), primarily sulfur dioxide (SO₂), are gases produced mainly by burning fossil fuels and certain industrial processes. They contribute to air pollution, acid rain, and respiratory issues when released into the atmosphere and can react with water vapor to form sulfuric acid, damaging ecosystems and infrastructure.

  • Water pollution

    Water pollution Water pollution refers to the contamination of water bodies—such as rivers, lakes, oceans, and groundwater—by harmful substances or pollutants. These pollutants can include chemicals, toxins, heavy metals, sewage, and plastics. Water pollution can result from various sources, including industrial discharges, agricultural runoff, wastewater, and improper waste disposal. It negatively impacts aquatic ecosystems, harms…

  • Greenhouse gas

    Greenhouse gas Greenhouse gases (GHG) are those gaseous constituents of the atmosphere, both natural and anthropogenic, that absorb and emit radiation at specific wavelengths within the spectrum of terrestrial radiation emitted by the Earth’s surface, the atmosphere itself and by clouds. Water vapor (H2O), carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4) and ozone (O3)…

  • Greenhouse effect

    Greenhouse effect The greenhouse effect is a natural process that occurs when certain gases in the Earth’s atmosphere, known as greenhouse gases, trap heat from the sun. These gases allow sunlight to enter the atmosphere and reach the Earth’s surface. However, they also absorb and re-radiate infrared radiation emitted by the Earth, trapping heat in…