Looking for online definition of PEAT or what PEAT stands for? Peat is a non-renewable resource which is found in Ireland. Peat, an organic fuel consisting of spongy material formed by the partial decomposition of organic matter, primarily plant material, in wetlands. For centuries people have used peat, which is similar to coal, as a fuel for heating. The transition to brown coal takes place slowly and is usually reached at depths ranging from 100 to 400 metres (approximately 330 to 1,300 feet). The peat bogs are lacustrine basins of glacial origin that today contain more … For example, according to the U.S. Department of Agriculture Soil Classification peat is an organic soil (Histosol) that contains a minimum of 20% organic matter increasing to 30% if as much as 60% of the mineral matter is clay. Peat may be distinguished from lower-ranked coals on the basis of four characteristics: peats generally contain free cellulose, more than 75 percent moisture, and less than 60 percent carbon, and they can be cut with a knife. Phenol is a chemical that is produced when peat is burned and during the drying process described above, the malted barley soaks in the phenol which flavours the grain. Peat moss is an affordable growing medium with great water holding capacity - but what is the environmental cost of using peat? Peat forms when plant material, usually in marshy areas, is inhibited from decaying fully by acidic and anaerobic conditions. Britannica Kids Holiday Bundle! The presence of oxygen (aerobic conditions) is necessary for fungal and microbial activity that promotes decomposition, but peat is formed in waterlogged soils with little or no access to oxygen (anaerobic conditions), largely preventing the complete decomposition of organic material. "atriz", "menina", etc. O PEAT consiste em tutorias individualizadas conduzidas por docentes para acompanhamento e orientação dos estudantes na UFABC, principalmente os ingressantes, visando fortalecer seu vínculo e sua adaptação à vida universitária e ao projeto pedagógico da instituição. Pile of peat (near Ardbeg) Peats may be divided into several types, including fibric, coarse hemic, hemic, fine hemic, and sapric, based on their macroscopic, microscopic, and chemical characteristics. Traduções em contexto de "peat" en inglês-português da Reverso Context : peat-bog, peat moss Peat is the surface organic layer of a soil that consists of partially decomposed organic matter, derived mostly from plant material, which has accumulated under conditions of waterlogging, oxygen deficiency, high acidity and nutrient deficiency. Although peat is used as a source of energy, it is not usually considered a coal. Aqui encaixam-se também os substantivos compostos compostos. Traditional peat harvesting involves a farmer cutting thick strips of peat with a large, sharp hoe. For example, in New Zealand peat is formed from members of the Restionaceae while in tropical coastal fringes peat is formed in mangrove. peat. ( piːt) n. 1. a. a compact brownish deposit of partially decomposed vegetable matter saturated with water: found in uplands and bogs in temperate and cold regions and used as a fuel (when dried) and as a fertilizer. In the lowland humid tropics, peat is derived mostly from rain forest trees (leaves, branches, trunks and roots) under near constant annual high temperatures. Peat is only a minor contributor to the world energy supply. The water drains off the peat very fast and turns the soft slices into hard briquettes. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Ex. P… Peat soil is very important. "While oil, coal, and natural gas are exported around the world, few outside northern Europe are aware of this energy source. Peat forms in bogs. It is also used to soften aquaria water and to mimic habitats for freshwater fish. Peat definition is - turf. They generally develop in cool climates with small seasonal temperature fluctuations and over one meter of rainfall and over 160 rain days each year.Fig. Although peat is not strictly a fossil fuel, its greenhouse gas emissions are comparable to that of fossil fuels. Peat is the "forgotten fossil fuel. Peat Bogs A peat bog is a type of wetland whose soft, spongy ground is composed largely of living and decaying Sphagnum moss. peat moss n noun: Refers to person, place, thing, quality, etc. Cost – Peat is cheap to extract and peat bogs have few other ‘productive’ uses, so it is very cost effective. Please select which sections you would like to print: Corrections? If however some growers use peat in plug plants to save costs then other suppliers not using peat may become 'too expensive' and be priced out of the market. Over time, peat deposits have the potential to evolve into coal. (2) Raised mires: Rain-fed, potentially deep peatlands. In certain circumstances, peat can be an early stage in coal formation. “Peaty” is the term used to describe the flavor profile that results from the smoke with tasting notes like cereal-y, grassy, herbal and nutty. The peat is actually the generic name that is applied to various materials from the decomposition of vegetables, depending on the environmental conditions of the place where they decompose. With increased time and higher temperatures, these low-rank coals are gradually converted to subbituminous and bituminous coal and under certain conditions to anthracite. Peat accumulates extremely slowly and bogs are often thousands of years old leading to peat being broadly classified as a fossil fuel. Changing the growing media - Millions of plants are grown each spring. Although the rate of plant growth in cold regions is very slow, the rate of decomposition of organic matter is also very slow. Let us know if you have suggestions to improve this article (requires login). The formation of peat is the first step in the formation of coal. There are a number of uses for it, although the two primary ones are as a type of fuel and as a fertilizer. peat definition: 1. a dark brown substance like soil that was formed by plants dying and becoming buried. Peat can be used in water filtration and is sometimes utilized for the treatment of urban runoff, wastewater, and septic tank effluent. Wetlands result from high groundwater levels, whereas some elevated bogs with heavy.. Temperatures, these low-rank coals are gradually changed to lignite aid nutrient,. Percent of soil carbon our editors will review what you ’ ve submitted and determine whether to revise article... 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