Source domestic

The domestication of animals occurred at least 6000 years ago. Besides providing a reliable food source, domestic animals supplied energy for many purposes. Hitched to a plow, oxen or water buffalo allowed humans to cultivate larger parcels of land. Land travel over long distances became much easier with horses, camels, and even elephants. 

Source "Domestic Cannabis Eradication/Suppression Program. ... 

Pollutants from point sources domestic sewage (detergents), industrial effluents (synthetic organics, metal cyanides, metals, caustic chemicals), landfill waste disposal (metallic ions, chloride, nitrate, nitrite, sulfate, and synthetic organics). 

There has been great concern about how heavy metals affect environmental quality. Heavy metals (As, Cu, Cd, Cr, Pb, Hg, and Ag) come from a number of different sources, including industrial sources, domestic water supplies, residential wastewater, surface runoff, atmospheric... 

Related Calculations. Use the method given here when making combustion calculations for any type of fuel oil—paraffin-base, asphalt-base, Bunker C, No. 2, 3, 4, or 5—from any source, domestic or foreign, in any type of furnace—boiler, heater, process, or waste-heat. When the air used for combustion contains moisture, as is usually true, this moisture is added to the combustion-formed moisture appearing in the products of combustion. Thus, for 80°F air of 60 percent relative humidity, the moisture content is 0.013 lb per pound of dry air. This amount appears in the products of combustion for each pound of air used and is a commonly assumed standard in combustion calculations. 

Sources Domestic sulphur recovered from crude oil Percentage 11% The anhydrite and pyrite (FeS ) based plants closed during the 1960s and 1970s... 

In-source Domestic in-sourcing Full control Complex products Customization High cost Offshore in-sourcing Cost advantage Knowledge vacuum Quality and productivity risk Reduced operations control... 

Caffeine. About 3% by weight of the roasted coffee bean is caffeine (16). The second U.S. Department of Agriculture world coffee crop estimate for 1988—1989 was 4.24 x 10 kg (93.3 million 100-lb bags) (102). World coffee consumption was predicted to rise in the foreseeable future at the rate of 1—2% per year and thus the total amount of caffeine and related alkaloids ingested from this source can also be expected to increase. Caffeine and related bases (eg, theophylline) are also found in various teas but, because most of the major producers (India, China, etc) export relatively Htfle of thek crops and keep most for domestic consumption, accurate figures on year-to-year production are more difficult to obtain. Nevertheless, these crops are of significant economic import (103). 

Most coal-tar chemicals are recovered from coproduct coke ovens. Since the primary product of the ovens is metallurgical coke, production of coal chemicals from this source is highly dependent on the level of activity in the steel industry. In past years most large coke producers operated thein own coproduct recovery processes. Because of the decline in the domestic steel industry, the recent trend is for independent refiners to coUect cmde coal tars and light oils from several producers and then separate the marketable products. 

Production of Eastman s entire acetic anhydride requirement from coal allows a reduction of 190,000 m /yr (1.2 million barrels/yr) in the amount of petroleum used for production of Eastman chemicals. Now virtually all of Eastman s acetyl products are made in part from coal-based feedstocks. Before the technology was introduced, these chemicals had been made from petroleum-based acetaldehyde. Reduced dependence on petroleum, much of which must be obtained from foreign sources, is important to maintain a strong domestic chemical industry. 

Economic Aspects. Pertinent statistics on the U.S. production and consumption of fluorspar are given in Table 4. For many years the United States has rehed on imports for more than 80% of fluorspar needs. The principal sources are Mexico, China, and the Repubflc of South Africa. Imports from Mexico have declined in part because Mexican export regulations favor domestic conversion of fluorspar to hydrogen fluoride for export to the United States. 

Mineral Feed. Mineral feed supplements for domestic animals and fowl usually contain a pure form of pulverized limestone. In fact, some state laws require the supplement to be at least 35% available calcium. Other sources of calcium are bone meal and dicalcium phosphate. Use as mineral feed has been a steadily growing market for limestone. The material is ground to 90% minus 0.15 mm (100 mesh) or 80% minus 0.9074 mm (200 mesh), is low in silica, and has strict tolerances on arsenic and fluorine (see Feeds and feed additives). 

In contrast to predictions of eventual exhaustion of high grade domestic ores of many common metals, seawater is a virtually unlimited source of magnesium. It has been estimated that 1.306 x 10 metric tons of magnesium are present in each cubic kilometer (2.6 x 10 gal) of seawater and there is an estimated 1.3 x 10 km (3.4 x 10 ° gal) of seawater on earth (3). 

The nameplate capacity of worldwide methanol plants is given by country in Table 2 (27). A significant portion of this capacity is based on natural gas feedstock. Percent utilization is expected to remain in the low 90s through the mid-1990s. A principal portion of this added capacity is expected to continue to come from offshore sources where natural gas, often associated with cmde oil production, is valued inexpensively. This has resulted in the emergence of a substantial international trade in methanol. In these cases, the cost of transportation is a relatively larger portion of the total cost of production than it is for domestic plants. 

Nuts have many uses, both industrial and domestic. For instance, the ivory nut, or tagua, is a source material for the manufacture of buttons and turnery articles. The kola nut supplies ingredients for popular cola beverages in the United States (see Carbonated beverages). StTychnos nux-vomica provides the important medicine and poison, strychnine. The areca or betel nut is chewed by the Indian and Malayan people as a narcotic a slice of the nut is placed in a leaf of the pepper plant Piper betle) together with a pinch of lime the mixture is an acrid, astringent narcotic that dyes the mouth red, blackens and destroys the teeth. The areca nut contains, among other alkaloids, arecoline, an active anthelminthic widely used in veterinary practice for the treatment of tapeworm infections. 

Commercially important nuts ia world trade iaclude almond, Bra2il nut, cashew, chestnut, coconut (copra), filbert, macadamia, palm nut, peanut, pecan, pignoHa, pistachio, and Knglish walnut. Coconut, palm nut, peanut, as well as babassu, oiticia, and tung, are important sources of oil for soap, paint, varnish, as well as many other domestic and iadustrial uses. 

Fats and oils are treated as commodities in the open market and are purchased in bulk. As commodities, their prices fluctuate with supply and demand. Furthermore, fats and oils come in different grades that reflect different levels of processing and have industry-standardized specifications such as the American Fats and Oil Association. In the manufacture of soap in the United States, the source of animal fats is domestic whereas the vegetable oils are frequently obtained from Southeast Asia, primarily Malaysia and the Philippines. 

Recovered sulfur became the primary domestic source of elemental sulfur ia 1982. 

Ore Processing. Vanadium is recovered domestically as a principal mine product, as a coproduct or by-product from uranium—vanadium ores, and from ferrophosphoms as a by-product in the production of elemental phosphoms. In Canada, it is recovered from cmde-oil residues and in the Repubhc of South Africa as a by-product of titaniferous magnetite. Whatever the source, however, the first stage in ore processing is the production of an oxide concentrate. 

Freshwater is withdrawn from various sources (rivers, lakes, groundwater, etc) and used many times before its discharge to the ocean. Water uses can generally be classified as follows pubHc water supply (domestic) industrial commercial and institutional, eg, restaurants, schools agricultural and hve stock. 

Synthetic fuels derived from shale or coal will have to supplement domestic suppHes from petroleum someday, and aircraft gas turbine fuels producible from these sources have been assessed. Shale-derived fuels can meet current specifications if steps are taken to reduce the nitrogen levels. However, extracting kerogen from shale rock and denitrogenating the jet fuel are energy-intensive steps compared with petroleum refining it has been estimated that shale jet fuel could be produced at about 70% thermal efficiency compared with 95% efficiency for petroleum (25). Such a difference represents much higher cost for a shale product. 

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