What does TCE degrade into?
In groundwater aquifers with geologic materials containing iron minerals, abiotic degradation of TCE can occur along with natural biodegradation. Abiotic degradation produces acetylene, which can have the detrimental effect of inhibiting the process of biological TCE degradation.
What are TCE breakdown products?
TCE degradation products of three dichloroethene (DCE) isomers, vinyl chloride (VC) and ethene were present. The plume was depleted of oxygen and methanogenic at certain depths.
What products use trichloroethylene?
It is used primarily to make refrigerants and other hydrofluorocarbons and as a degreasing solvent for metal equipment. TCE is also used in some household products, such as cleaning wipes, aerosol cleaning products, tool cleaners, paint removers, spray adhesives, and carpet cleaners and spot removers.
What is the chemical formula for trichloroethylene?
C2HCl3
Trichloroethylene/Formula
How does trichloroethylene get into water?
Trichloroethylene can enter drinking water through leaks, evaporation and spills from industrial storage tanks. Trichloroethylene is measured in parts per billion (ppb). The federal government has established the safe drinking water standard (also called maximum contaminant level) for trichloroethylene as 5 ppb.
What is trichloroethylene used for?
Trichloroethylene (TCE) is used as a solvent for degreasing metal parts during the manufacture of a variety of products. It can be found in consumer products, including some wood finishes, adhesives, paint removers, and stain removers. TCE can also be used in the manufacture of other chemicals.
Is TCE a breakdown product of PCE?
Mackinawite (FeS) has been found effective in reducing PCE and TCE under anoxic conditions with acetylene as the main product. The other products of TCE transformation are 1,1-DCE, c-DCE, ethene and ethane. TCE is a product of PCE hydrogenolysis in the presence of FeS.
What is reductive degradation?
From Wikipedia, the free encyclopedia. Reductive dechlorination is Chemical reaction of chlorinated organic compounds with reductants. The reaction breaks C-Cl bonds, and releases chloride ions.
Where is trichloroethylene used?
What are the uses of dichloromethane?
Uses of Dichloromethane (CH2Cl2)
- Dichloromethane is used as a solvent in food technology.
- It is used in aerosol formulations.
- It is am ethane foam blowing agent.
- Used as a solvent in the manufacturing of pharmaceutical products.
- CH2Cl2 is used as a degreasing agent.
- Used in the manufacturing of electronics.
What is trichloroethylene made of?
Today, however, most trichloroethylene is produced from ethylene. First, ethylene is chlorinated over a ferric chloride catalyst to produce 1,2-dichloroethane. This reaction can be catalyzed by a variety of substances. The most commonly used catalyst is a mixture of potassium chloride and aluminum chloride.
How does trichloroethylene affect the environment?
Environmental Hazards Because of its high vapor pressure and low rate of adsorption in soil TCE evaporates fairly rapidly when released to soil. However, where it persists it can percolate rapidly through sandy soil thereby reaching groundwater.