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68-639: Chemical Valley may refer to: The chemical industry in Kanawha Valley , West Virginia, US The chemical industry in Sarnia , Ontario, Canada; see Environmental impact of the chemical industry in Sarnia Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Chemical Valley . If an internal link led you here, you may wish to change

136-512: A cyclothem . Cyclothems are thought to have their origin in glacial cycles that produced fluctuations in sea level , which alternately exposed and then flooded large areas of continental shelf. The woody tissue of plants is composed mainly of cellulose, hemicellulose, and lignin. Modern peat is mostly lignin, with a content of cellulose and hemicellulose ranging from 5% to 40%. Various other organic compounds, such as waxes and nitrogen- and sulfur-containing compounds, are also present. Lignin has

204-579: A major geological section of the Appalachian Highlands physiographic region of the United States called a physiographic region. A physiographic region is a large portion of land that is grouped by several factors. Each region has similar geology, topography, and groups of plants and animals. There are eight physiographic divisions in the 48 contiguous United States. Each division is divided into provinces, there are 25 provinces in

272-417: A process called carbonization . Carbonization proceeds primarily by dehydration , decarboxylation , and demethanation. Dehydration removes water molecules from the maturing coal via reactions such as Decarboxylation removes carbon dioxide from the maturing coal: while demethanation proceeds by reaction such as In these formulas, R represents the remainder of a cellulose or lignin molecule to which

340-540: A switch in fuels happened in London in the late sixteenth and early seventeenth centuries. Historian Ruth Goodman has traced the socioeconomic effects of that switch and its later spread throughout Britain and suggested that its importance in shaping the industrial adoption of coal has been previously underappreciated. The development of the Industrial Revolution led to the large-scale use of coal, as

408-561: A tenth. Indonesia and Australia export the most, followed by Russia . The word originally took the form col in Old English , from reconstructed Proto-Germanic * kula ( n ), from Proto-Indo-European root * g ( e ) u-lo- "live coal". Germanic cognates include the Old Frisian kole , Middle Dutch cole , Dutch kool , Old High German chol , German Kohle and Old Norse kol . Irish gual

476-721: A third of its electricity . Some iron and steel -making and other industrial processes burn coal. The extraction and burning of coal damages the environment , causing premature death and illness, and it is the largest anthropogenic source of carbon dioxide contributing to climate change . Fourteen billion tonnes of carbon dioxide were emitted by burning coal in 2020, which is 40% of total fossil fuel emissions and over 25% of total global greenhouse gas emissions . As part of worldwide energy transition , many countries have reduced or eliminated their use of coal power . The United Nations Secretary General asked governments to stop building new coal plants by 2020. Global coal use

544-403: A weight basis. This composition reflects partly the composition of the precursor plants. The second main fraction of coal is ash, an undesirable, noncombustable mixture of inorganic minerals. The composition of ash is often discussed in terms of oxides obtained after combustion in air: Of particular interest is the sulfur content of coal, which can vary from less than 1% to as much as 4%. Most of

612-406: A weight composition of about 54% carbon, 6% hydrogen, and 30% oxygen, while cellulose has a weight composition of about 44% carbon, 6% hydrogen, and 49% oxygen. Bituminous coal has a composition of about 84.4% carbon, 5.4% hydrogen, 6.7% oxygen, 1.7% nitrogen, and 1.8% sulfur, on a weight basis. The low oxygen content of coal shows that coalification removed most of the oxygen and much of the hydrogen

680-506: Is a combustible black or brownish-black sedimentary rock , formed as rock strata called coal seams . Coal is mostly carbon with variable amounts of other elements , chiefly hydrogen , sulfur , oxygen , and nitrogen . Coal is a type of fossil fuel , formed when dead plant matter decays into peat which is converted into coal by the heat and pressure of deep burial over millions of years. Vast deposits of coal originate in former wetlands called coal forests that covered much of

748-636: Is also a cognate via the Indo-European root. The conversion of dead vegetation into coal is called coalification . At various times in the geologic past, the Earth had dense forests in low-lying areas. In these wetlands, the process of coalification began when dead plant matter was protected from oxidation , usually by mud or acidic water, and was converted into peat . The resulting peat bogs , which trapped immense amounts of carbon, were eventually deeply buried by sediments. Then, over millions of years,

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816-429: Is burned in a turbine). Hot exhaust gases from the turbine are used to raise steam in a heat recovery steam generator which powers a supplemental steam turbine . The overall plant efficiency when used to provide combined heat and power can reach as much as 94%. IGCC power plants emit less local pollution than conventional pulverized coal-fueled plants. Other ways to use coal are as coal-water slurry fuel (CWS), which

884-603: Is entirely vertical; however, metamorphism may cause lateral changes of rank, irrespective of depth. For example, some of the coal seams of the Madrid, New Mexico coal field were partially converted to anthracite by contact metamorphism from an igneous sill while the remainder of the seams remained as bituminous coal. The earliest recognized use is from the Shenyang area of China where by 4000 BC Neolithic inhabitants had begun carving ornaments from black lignite. Coal from

952-455: Is made when metallurgical coal (also known as coking coal ) is baked in an oven without oxygen at temperatures as high as 1,000 °C, driving off the volatile constituents and fusing together the fixed carbon and residual ash. Metallurgical coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace . The carbon monoxide produced by its combustion reduces hematite (an iron oxide ) to iron. Pig iron , which

1020-409: Is more abundant, and anthracite. The % carbon in coal follows the order anthracite > bituminous > lignite > brown coal. The fuel value of coal varies in the same order. Some anthracite deposits contain pure carbon in the form of graphite . For bituminous coal, the elemental composition on a dry, ash-free basis of 84.4% carbon, 5.4% hydrogen, 6.7% oxygen, 1.7% nitrogen, and 1.8% sulfur, on

1088-452: Is used as fuel. 27.6% of world energy was supplied by coal in 2017 and Asia used almost three-quarters of it. Other large-scale applications also exist. The energy density of coal is roughly 24 megajoules per kilogram (approximately 6.7 kilowatt-hours per kg). For a coal power plant with a 40% efficiency, it takes an estimated 325 kg (717 lb) of coal to power a 100 W lightbulb for one year. In 2022, 68% of global coal use

1156-693: The Adena culture built at least 50 earthwork mounds and 10 enclosures in the area between Charleston and Dunbar , as identified by an 1882 to 1884 survey by the Bureau of Ethnology (later part of the Smithsonian Institution ). Three of their mounds survive in the valley, including Criel Mound at present-day South Charleston, West Virginia . Evidence has been found of the Fort Ancient culture peoples, who had villages that survived to

1224-715: The Bronze Age (3000–2000 BC), where it formed part of funeral pyres . In Roman Britain , with the exception of two modern fields, "the Romans were exploiting coals in all the major coalfields in England and Wales by the end of the second century AD". Evidence of trade in coal, dated to about AD 200, has been found at the Roman settlement at Heronbridge , near Chester ; and in the Fenlands of East Anglia , where coal from

1292-842: The Elk River , at St. Albans by the Coal River , and at Poca by the Pocatalico River . Major impoundments in the Kanawha River watershed include Claytor Lake and Bluestone Lake on the New River, Summersville Lake on the Gauley River, and Sutton Lake on the Elk River. Collectively, they have a capacity of 14 percent of the average annual flow at Charleston. The reservoirs on New and Gauley Rivers reduced

1360-521: The Fushun mine in northeastern China was used to smelt copper as early as 1000 BC. Marco Polo , the Italian who traveled to China in the 13th century, described coal as "black stones ... which burn like logs", and said coal was so plentiful, people could take three hot baths a week. In Europe, the earliest reference to the use of coal as fuel is from the geological treatise On Stones (Lap. 16) by

1428-523: The Huron and Conoy . By right of conquest, the Iroquois, Lenape (Delaware), and Shawnee reserved the area as a hunting ground. They resisted European-American settlement during the colonial years. Eventually the settlers took over by right of conquest . The watershed contains significant deposits of coal and natural gas . As of 1998, about 7 percent of the coal mined in the United States came from

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1496-607: The Midlands was transported via the Car Dyke for use in drying grain. Coal cinders have been found in the hearths of villas and Roman forts , particularly in Northumberland , dated to around AD 400. In the west of England, contemporary writers described the wonder of a permanent brazier of coal on the altar of Minerva at Aquae Sulis (modern day Bath ), although in fact easily accessible surface coal from what became

1564-728: The Somerset coalfield was in common use in quite lowly dwellings locally. Evidence of coal's use for iron -working in the city during the Roman period has been found. In Eschweiler , Rhineland , deposits of bituminous coal were used by the Romans for the smelting of iron ore . No evidence exists of coal being of great importance in Britain before about AD 1000, the High Middle Ages . Coal came to be referred to as "seacoal" in

1632-491: The coal gap in the Permian–Triassic extinction event , where coal is rare. Favorable geography alone does not explain the extensive Carboniferous coal beds. Other factors contributing to rapid coal deposition were high oxygen levels, above 30%, that promoted intense wildfires and formation of charcoal that was all but indigestible by decomposing organisms; high carbon dioxide levels that promoted plant growth; and

1700-492: The confluence of the New and Gauley rivers 2 mi upstream from Kanawha Falls . The waterfall is 24 ft high and has been a barrier to fish movement for more than 1 million years. The river flows generally northwest, in a winding course on the unglaciated Allegheny Plateau , through Fayette, Kanawha , Putnam , and Mason counties, past the cities of Charleston and St. Albans , and numerous smaller communities. It joins

1768-447: The steam engine took over from the water wheel . In 1700, five-sixths of the world's coal was mined in Britain. Britain would have run out of suitable sites for watermills by the 1830s if coal had not been available as a source of energy. In 1947 there were some 750,000 miners in Britain, but the last deep coal mine in the UK closed in 2015. A grade between bituminous coal and anthracite

1836-407: The 13th century; the wharf where the material arrived in London was known as Seacoal Lane, so identified in a charter of King Henry III granted in 1253. Initially, the name was given because much coal was found on the shore, having fallen from the exposed coal seams on cliffs above or washed out of underwater coal outcrops, but by the time of Henry VIII , it was understood to derive from the way it

1904-919: The Canawagh..." This area is the lower area of today's St. Albans, West Virginia . After the Treaty of Fort Stanwix , "The Kanawhas had gone from the upper tributaries of the river which bears their name, to join their kinsmen, the Iroquois in New York; the Shawnee had abandoned the Indian Old Fields of the valley of the South Branch of the Potomac; the Delaware were gone from the Monongahela;

1972-596: The Carboniferous, and suggested that climatic and tectonic factors were a more plausible explanation, reconstruction of ancestral enzymes by phylogenetic analysis corroborated a hypothesis that lignin degrading enzymes appeared in fungi approximately 200 MYa. One likely tectonic factor was the Central Pangean Mountains , an enormous range running along the equator that reached its greatest elevation near this time. Climate modeling suggests that

2040-598: The Central Pangean Mountains contributed to the deposition of vast quantities of coal in the late Carboniferous. The mountains created an area of year-round heavy precipitation, with no dry season typical of a monsoon climate. This is necessary for the preservation of peat in coal swamps. Coal is known from Precambrian strata, which predate land plants. This coal is presumed to have originated from residues of algae. Sometimes coal seams (also known as coal beds) are interbedded with other sediments in

2108-809: The Cherokee who claimed all the region between the Great Kanawha and Big Sandy, had never occupied it." quoting Virgil A. Lewis (1887), corresponding member of the Virginia Historical Society. The river's name changes to the Kanawha River at the Kanawha Falls . The Treaty of Big Tree between the Seneca nation and the United States established ten reservations. This formal treaty was signed on September 15, 1797. Lewis

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2176-407: The Earth's tropical land areas during the late Carboniferous ( Pennsylvanian ) and Permian times. Coal is used primarily as a fuel. While coal has been known and used for thousands of years, its usage was limited until the Industrial Revolution . With the invention of the steam engine , coal consumption increased. In 2020, coal supplied about a quarter of the world's primary energy and over

2244-577: The Greek scientist Theophrastus (c. 371–287 BC): Among the materials that are dug because they are useful, those known as anthrakes [coals] are made of earth, and, once set on fire, they burn like charcoal [anthrakes]. They are found in Liguria ;... and in Elis as one approaches Olympia by the mountain road; and they are used by those who work in metals. Outcrop coal was used in Britain during

2312-447: The Kanawha River watershed. A thriving chemical industry along the river banks provides a significant part of the local economy. In colonial times, the wildly fluctuating level of the river prevented its use for transportation. The removal of boulders and snags on the lower river in the 1840s allowed navigation, which was extended upriver by the construction of locks and dams by the U.S. Army Corps of Engineers starting in 1875. By 1898

2380-466: The Ohio at Point Pleasant . An environmental overview and summary of natural and human factors affecting water quality in the watershed was published in 2000. Paleo-Indians , the earliest indigenous peoples , lived in the valley and the heights by 10,000 BC as evidenced by archaeological artifacts such as Clovis points . A succession of prehistoric cultures developed, with the Adena culture beginning

2448-469: The United States. Each province is then divided into sections, creating 85 different physiographic sections in the United States. The Kanawha section is one of those 85 sections. The Kanawha section encompasses areas of Virginia, West Virginia, Pennsylvania, New York and Ohio. The two major cities in the section are Pittsburgh, PA and Charleston, WV. "Ka(ih)nawha" derives from the region's Iroquoian dialects meaning "water way" or "canoe way" implying

2516-612: The area. The first white person to travel through Virginia all the way to the Ohio River (other than as a prisoner of the Indians) was Matthew Arbuckle, Sr. , who traversed the length of the Kanawha River valley arriving at (what would later be called) Point Pleasant around 1764. In April 1774, Captain Hanson was one of an expedition: "18th. We surveyed 2,000 acres (8.1 km ) of Land for Col. Washington, bordered by Coal River &

2584-477: The construction of numerous skilled earthwork mounds and enclosures more than 2000 years ago. Some of the villages of the Fort Ancient culture survived into the times of European contact. The area was a place of competition among historical American Indian nations. Invading from their base in present-day New York , the Iroquois drove out or conquered Fort Ancient culture peoples, as well as such tribes as

2652-437: The estimated 100-year flood discharge under 20th-century climate by about half at Kanawha Falls. Kanawha Falls is the upstream limit of several fish species that broadly inhabit the Ohio River watershed. Above the waterfall, the watershed has fewer fish species overall, a relatively high number of species found nowhere else in the world, and nearly as many non-native species as natives. The Kanawha River lends its name to

2720-430: The evolution of the first trees . But bacteria and fungi did not immediately evolve the ability to decompose lignin, so the wood did not fully decay but became buried under sediment, eventually turning into coal. About 300 million years ago, mushrooms and other fungi developed this ability, ending the main coal-formation period of earth's history. Although some authors pointed at some evidence of lignin degradation during

2788-519: The factors involved in coalification, temperature is much more important than either pressure or time of burial. Subbituminous coal can form at temperatures as low as 35 to 80 °C (95 to 176 °F) while anthracite requires a temperature of at least 180 to 245 °C (356 to 473 °F). Although coal is known from most geologic periods , 90% of all coal beds were deposited in the Carboniferous and Permian periods. Paradoxically, this

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2856-498: The form of iron pyrite (FeS 2 ). Being a dense mineral, it can be removed from coal by mechanical means, e.g. by froth flotation . Some sulfate occurs in coal, especially weathered samples. It is not volatilized and can be removed by washing. Minor components include: As minerals, Hg, As, and Se are not problematic to the environment, especially since they are only trace components. They become however mobile (volatile or water-soluble) when these minerals are combusted. Most coal

2924-475: The heat and pressure of deep burial caused the loss of water, methane and carbon dioxide and increased the proportion of carbon. The grade of coal produced depended on the maximum pressure and temperature reached, with lignite (also called "brown coal") produced under relatively mild conditions, and sub-bituminous coal , bituminous coal , or anthracite coal (also called "hard coal" or "black coal") produced in turn with increasing temperature and pressure. Of

2992-431: The increasing tendency of the anthracite to break with a conchoidal fracture , similar to the way thick glass breaks. As geological processes apply pressure to dead biotic material over time, under suitable conditions, its metamorphic grade or rank increases successively into: There are several international standards for coal. The classification of coal is generally based on the content of volatiles . However

3060-509: The link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Chemical_Valley&oldid=932759102 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Kanawha Valley It is formed at the town of Gauley Bridge in northwestern Fayette County , approximately 35 mi (56 km) SE of Charleston , by

3128-411: The metaphor, "transport way", in the local language. The glottal consonant of the "ih" (stream or river, local Iroquois) dropped out as settlers and homesteaders arrived. Some say that it comes from a Shawnee word that means "new water" or that its a Catawba word meaning "friendly brother". The river has also had historical alternate names, alternate spellings and misspellings including Wood's River for

3196-453: The morphology and some properties of the original plant. In many coals, individual macerals can be identified visually. Some macerals include: In coalification huminite is replaced by vitreous (shiny) vitrinite . Maturation of bituminous coal is characterized by bitumenization , in which part of the coal is converted to bitumen , a hydrocarbon-rich gel. Maturation to anthracite is characterized by debitumenization (from demethanation) and

3264-405: The most important distinction is between thermal coal (also known as steam coal), which is burnt to generate electricity via steam; and metallurgical coal (also known as coking coal), which is burnt at high temperature to make steel . Hilt's law is a geological observation that (within a small area) the deeper the coal is found, the higher its rank (or grade). It applies if the thermal gradient

3332-407: The nature of Carboniferous forests, which included lycophyte trees whose determinate growth meant that carbon was not tied up in heartwood of living trees for long periods. One theory suggested that about 360 million years ago, some plants evolved the ability to produce lignin , a complex polymer that made their cellulose stems much harder and more woody. The ability to produce lignin led to

3400-455: The number of double bonds between carbon). As carbonization proceeds, aliphatic compounds convert to aromatic compounds . Similarly, aromatic rings fuse into polyaromatic compounds (linked rings of carbon atoms). The structure increasingly resembles graphene , the structural element of graphite. Chemical changes are accompanied by physical changes, such as decrease in average pore size. The macerals are coalified plant parts that retain

3468-456: The pre-combustion treatment, turbine technology (e.g. supercritical steam generator ) and the age of the plant. A few integrated gasification combined cycle (IGCC) power plants have been built, which burn coal more efficiently. Instead of pulverizing the coal and burning it directly as fuel in the steam-generating boiler, the coal is gasified to create syngas , which is burned in a gas turbine to produce electricity (just like natural gas

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3536-637: The project made the Kanawha the first fully controlled river navigation system in America. The river is now navigable for barge traffic to Deepwater , an unincorporated community about 20 miles (32 km) upriver from Charleston. Multiple West Virginia state record fish were caught along the Bluestone Lake. In addition to the New and Gauley River headwaters, the Kanawha is joined at Charleston by

3604-427: The reacting groups are attached. Dehydration and decarboxylation take place early in coalification, while demethanation begins only after the coal has already reached bituminous rank. The effect of decarboxylation is to reduce the percentage of oxygen, while demethanation reduces the percentage of hydrogen. Dehydration does both, and (together with demethanation) reduces the saturation of the carbon backbone (increasing

3672-399: The sulfur and most of the nitrogen is incorporated into the organic fraction in the form of organosulfur compounds and organonitrogen compounds . This sulfur and nitrogen are strongly bound within the hydrocarbon matrix. These elements are released as SO 2 and NO x upon combustion. They cannot be removed, economically at least, otherwise. Some coals contain inorganic sulfur, mainly in

3740-524: The time of European contact, such as Buffalo and Marmet . They were driven out by Iroquois from present-day New York . According to French missionary reports, by the late 16th century, several thousand Huron , originally of the Great Lakes region, lived in central West Virginia. They were partially exterminated and their remnant driven out in the 17th century by the Iroquois ' invading from western present-day New York. Other accounts note that

3808-660: The tribe known as Conois , Conoy, Canawesee , or Kanawha were conquered or driven out by the large Seneca tribe, one of the Iroquois Confederacy , as the Seneca boasted to Virginia colonial officials in 1744. The Iroquois and other tribes, such as the Shawnee and Delaware , maintained central West Virginia as a hunting ground. It was essentially unpopulated when the English and Europeans began to move into

3876-430: The tributary known today as the New River, for Colonel Abraham Wood , an English explorer from Virginia, the first European known to have explored the river in the mid-17th century. Archaeological artifacts, such as Clovis points and later projectiles, indicate prehistoric indigenous peoples living in the area from the 12,500 BC era. Peoples of later cultures continued to live along the valley and heights. Those of

3944-730: The west side of the Chesapeake Bay and below the Potomac River . They were also known to the colonists there as the Piscataway . They later migrated north to Pennsylvania , to submit and seek protection with the Susquehannock and Iroquois. The spelling of the Indian tribe varied at the time, from Conoys to Conois to Kanawha . The latter spelling was used and has gained acceptance over time. Coal Coal

4012-415: The world's coal-generated electricity. Efforts around the world to reduce the use of coal have led some regions to switch to natural gas and renewable energy . In 2018 coal-fired power station capacity factor averaged 51%, that is they operated for about half their available operating hours. Coke is a solid carbonaceous residue that is used in manufacturing steel and other iron-containing products. Coke

4080-590: Was 8.3 billion tonnes in 2022, and is set to remain at record levels in 2023. To meet the Paris Agreement target of keeping global warming below 2 °C (3.6 °F) coal use needs to halve from 2020 to 2030, and "phasing down" coal was agreed upon in the Glasgow Climate Pact . The largest consumer and importer of coal in 2020 was China , which accounts for almost half the world's annual coal production, followed by India with about

4148-574: Was based on the trading of this commodity. Coal continues to arrive on beaches around the world from both natural erosion of exposed coal seams and windswept spills from cargo ships. Many homes in such areas gather this coal as a significant, and sometimes primary, source of home heating fuel. Coal consists mainly of a black mixture of diverse organic compounds and polymers. Of course, several kinds of coals exist, with variable dark colors and variable compositions. Young coals (brown coal, lignite) are not black. The two main black coals are bituminous, which

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4216-510: Was carried to London by sea. In 1257–1259, coal from Newcastle upon Tyne was shipped to London for the smiths and lime -burners building Westminster Abbey . Seacoal Lane and Newcastle Lane, where coal was unloaded at wharves along the River Fleet , still exist. These easily accessible sources had largely become exhausted (or could not meet the growing demand) by the 13th century, when underground extraction by shaft mining or adits

4284-612: Was developed in the Soviet Union , or in an MHD topping cycle . However these are not widely used due to lack of profit. In 2017 38% of the world's electricity came from coal, the same percentage as 30 years previously. In 2018 global installed capacity was 2 TW (of which 1TW is in China) which was 30% of total electricity generation capacity. The most dependent major country is South Africa, with over 80% of its electricity generated by coal; but China alone generates more than half of

4352-408: Was developed. The alternative name was "pitcoal", because it came from mines. Cooking and home heating with coal (in addition to firewood or instead of it) has been done in various times and places throughout human history, especially in times and places where ground-surface coal was available and firewood was scarce, but a widespread reliance on coal for home hearths probably never existed until such

4420-497: Was during the Late Paleozoic icehouse , a time of global glaciation . However, the drop in global sea level accompanying the glaciation exposed continental shelves that had previously been submerged, and to these were added wide river deltas produced by increased erosion due to the drop in base level . These widespread areas of wetlands provided ideal conditions for coal formation. The rapid formation of coal ended with

4488-630: Was granted a large tract of land near the mouth of the Great Kanawha River in the late 18th century. The Little Kanawha and the Great Kanawha rivers, the two largest in the state, were named for the American Indian tribe that lived in the area prior to European settlement in the 18th century. Under pressure from the Iroquois, most of the Conoy/Kanawha had migrated to present-day Virginia by 1634, where they had settled on

4556-564: Was once known as "steam coal" as it was widely used as a fuel for steam locomotives . In this specialized use, it is sometimes known as "sea coal" in the United States. Small "steam coal", also called dry small steam nuts (DSSN), was used as a fuel for domestic water heating . Coal played an important role in industry in the 19th and 20th century. The predecessor of the European Union , the European Coal and Steel Community ,

4624-430: Was used for electricity generation. Coal burnt in coal power stations to generate electricity is called thermal coal . It is usually pulverized and then burned in a furnace with a boiler . The furnace heat converts boiler water to steam , which is then used to spin turbines which turn generators and create electricity. The thermodynamic efficiency of this process varies between about 25% and 50% depending on

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