Chemical Process Industries Research Paper Example | Topics and Well Written Essays - 1000 words

Chemical Process Industries - Research Paper Example DDT short for dichlorodiphenyltrichloroethane is a pesticide categorized as an organochlorine insecticide. It is white in color, crystalline in form, tasteless and has no identifiable smell. It has a melting point between 108.5–109  °C, vapor pressure of 2.53 Ãâ€" 10-5 Pa at 20  °C. It is highly insoluble in water (about 1  µg/liter) and has Log octanol–water partition coefficient of 7.48 (IPCS, 1989). Figure 1 shows the structure of DDT compound. b. A brief description of the uses to which the product is put. If your product is not itself a product that consumers purchase directly, describe how your product is used to produce something that is directly purchased or used by consumers.   Technical DDT has so far been prepared in every conceivable form. These forms include xylene and petroleum distillate solutions, water-wettable powders, granules, smoke candles, aerosols, charges for vaporizers and lotions. c. A brief description of the usual raw materials used to produce the product, and where THEY are obtained from. Ideally, you will be able to trace the raw materials back to the biosphere: the earth, oceans, rivers and lakes, and the atmosphere.   Technical DDT is prepared by condensing chloral hydrate with chlorobenzene in concentrated sulfuric acid. In the year 1874, it was first synthesized, but its insecticidal properties were unknown till 1939 when Mà ¼ller and his coworkers found out about it (Metcalf, Kapoor and Hirwe, 1971). Chloral hydrate is a hallucinatory drug and a sedative; it is also used as a chemical reagent such as in the preparation of DDT. It is a compound of one molecule of water added to trichloroacetaldehyde and the chemical formula of C2H3Cl3O ­2. Trichloroacetaldehyde is also known as chloral and is formed by chlorination of ethanol. The key reaction is; The second ingredient in producing DDT is

Offshore Wind Essay Example | Topics and Well Written Essays - 500 words

Offshore Wind - Essay Example The article also notes from experience that the installation of offshore wind stations has not been received that well and is witnessing a low takeoff. Nevertheless, the installation has seen remarkable improvements over the last few years with at least 3.5 GW of offshore winds being in line, over 2GW is already in development, and more than 100GW currently at different development stages. Nevertheless, most constructions are concentrated in North Europe especially in the UK, Germany, Sweden, Denmark, and Belgium.The article also shows that projects of offshore winds have increased in scale over the last decade, and the trend continues. The increase is mainly projected to be witnessed in UK, which will see hundreds of high voltage wind turbines being constructed. This will require numerous highly specialized installation vessels as well as port facilities to manage the increasing dimension of wind turbines, balance of plants and support structures. Wright notes that the major challen ge pertains to financial requirements as the UK round 3 Zones are projected to require over â‚ ¬90 billion, which would necessitate new financing models and the support of the public at all levels. Nevertheless, private investors have aired their worries regarding the high risk associated with construction, financial incentives, long-term stability, and issues related to turbine reliability.The article also reveals that the supply chain progress has been inspired in the recent past with increasing separation between onshore and offshore wind sectors.