Used solvents contain contaminants that can be removed by fractional distillation. The recycled solvents have purities suitable for re-use. Fractional distillation is used to separate the crude oil into its various components such as gasoline, kerosene oil, diesel oil, paraffin wax, liberating oil. Fractional distillation is also used for the purification of water. Water contains many dissolved impurities; these can be removed by this process.
Screening to separate the large contaminants from the water b. Coagulation to attract small contaminants c. Sedimentation where water sits and finishes coagulation d. Filtration to remove any small remaining contaminants and particles e. Disinfection by disinfecting chemicals such as chlorine to kill microorganism or remaining bacteria 2. Explain the differences between primary, secondary, and tertiary sewage treatment. a.
Content. Definition of water pollution. Water pollution is defined as the water contamination due to the direct or indirect pollutant that were discharge into river and contamination of the chemical that was not properly treated to remove harmful compound. Factors that cause water pollutions. There are several factors that causes the water pollution such as the non-point source, point source, rubbish dumping, industrial waste, and ballast water tank.
Discussions. This method is used to accurately quantify pesticides in water samples. The lyophilization is advantageous to allow the complete of the samples to minimize error. The acetonitrile resulted in 82% - 104% extraction efficiency for Alachlor and Malathion in the water samples. The different solvent gradient was fixed to contain both the physical and chemical properties of the pesticides.
Biodegradable components are applied to replace materials derived from petrochemicals. Polylactic acid (PLA) is one example of biodegradable polymer which applied regularly in the purpose of packaging. The manufacturing of PLA has advantage of the ability to change the physical properties of the polymer through processing methods. PLA is appied for a variation of films, wrappings, and containers (including bottles and cups). Also, BASF markets have a product called Ecovio® (blend of PLA and the company's biodegradable plastic Ecoflex®).
The mobile phase and stationary phase in the HPLC will involve in the mechanism. The stationary phase in HPLC normally will be the silica gel. The silica gel will help to separate the components in the liquid sample as its particle size, surface properties and pore structure will lead to good separation results of solvent by minimize the length of diffusion path. The silica gel is also inert to most solvent so it can separate various type of chemical compound with high reproducibility. During the separation, the component in sample will interact with the adsorbent material within the pores of the stationary phase.
Naturally occurring resources like rocks with iron, manganese and more can dissolve into groundwater, and the organic particles have a high concentration on human’s health. On a better note, some can only cause a bad smell or taste. Landfills can also contaminate water through the decomposition process that can release leachate into the water. These come from industrial and hazardous chemicals. They can only leach into the ground but then contaminate water.
Atmospheric pollution is caused by pollutants such as smoke from factories entering the atmosphere and being carried to waterways. Industrial waste can also create polluted runoff that collects in rivers and lakes. Another reason for water pollution is chemically treated sewage. This water carries harmful chemicals and high amounts of bacteria, which can potentially lead to serious diseases. Runoff from fields can contain chemical fertilizers and pesticides which can pollute
Water Pollution is the addition of harmful chemicals to natural water. Sources of water pollution in the United States include industrial waste, runoff from fields treated with chemical fertilizers, and run-off from areas that have been mined. (Dictionary.com).The issue of water pollution has a long history around the world. Water Pollution is one of the leading causes of death in Africa and some parts of Asia. For some, such as Africans and Americans, the issue of water pollution has a particular significance to those who are poverty-stricken.Recently the case of Flint, Michigan has drawn attention to the subject of water pollution.