lignite

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Related to lignitic: brown coal

lignite

(lĭg`nīt) or

brown coal,

carbonaceous fuel intermediate between coalcoal,
fuel substance of plant origin, largely or almost entirely composed of carbon with varying amounts of mineral matter. Types

There is a complete series of carbonaceous fuels, which differ from each other in the relative amounts of moisture, volatile matter,
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 and peatpeat,
soil material consisting of partially decomposed organic matter, found mainly in swamps and bogs in various parts of the northern temperate zone but also in some semitropical and tropical regions.
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, brown or yellowish in color and woody in texture. It contains more moisture than coal and tends to dry and crumble when exposed to the air; the flame is long and smoky and the heating power low. The burning of lignite produces more pollution and greenhouse gases than coal. It is found in the United States, Canada, Germany, and elsewhere chiefly in formations formed in the Tertiary period.

Lignite

 

a fossil, slightly carbonized wood of a brown color which has preserved the anatomical structure of the tissues and is externally similar to unaltered wood, as well as the brown coal formed entirely or partly from such wood.

lignite

[′lig‚nīt]
(geology)
Coal of relatively recent origin, intermediate between peat and bituminous coal; often contains patterns from the wood from which it formed. Also known as brown coal; earth coal.

lignite

a brown carbonaceous sedimentary rock with woody texture that consists of accumulated layers of partially decomposed vegetation: used as a fuel. Fixed carbon content: 46--60 per cent; calorific value: 1.28 × 107 to 1.93 × 107 J/kg (5500 to 8300 Btu/lb)
References in periodicals archive ?
This is a very good result with respect to the potential application of lignitic humic acids as an environmentally-friendly adsorbent for heavy metals.
In hand specimen, the wood sample from which palynological sample P37974 is derived consists of a brown-coloured, lignitic wood fragment 11.7 cm in length.
The coals are lignitic to bituminous; the fixed carbon ratio in 22 samples ranges from 49.0 to 58.4 and averages 54.5.
The coal is lignitic, low in sulphur and ash, less than one per cent and 10 per cent respectively in contrast to bother coal deposits in the country and is suited to power generation.
Pakistan is ranked 7th internationally regarding lignitic coal reserves but unluckily importing coal.
The Fuel Research Centre (FRC) Karachi Pakistan Council of Scientific and Industrial Research (PCSIR) have devised the economical process of humic acid extraction from low grade lignite coal under the project entitled Development of Humic Acids from Lignitic Coal and its use in Agriculture and Industry".
The program successfully assessed the lateral continuity and thickness of the lignitic coal with large diameter cores evaluating both the overburden and coal properties.
Other companies also confirmed include Bark Enterprises from South Africa which supply a wide variety and range of barks, compost, mulches, nuggets and lignitic feeds; and Universal Publishers Distribution.
In some wells, a plant debris rich interval, described as lignitic remains, can be identified; in outcrops there is an equivalent level with abundant remains of Equisetal plants, according to our field observations, i.e.
The basal unit, a thick dark lignitic grey clay, lies unconformably on the bedrock.
Recently due to discoveries of Thar coal deposits in Sindh Province, the Pakistan is ranked 7th internationally regarding lignitic coal reserves.
Most of the coal in the Chamalang and adjoining areas is lignitic. The metallic coal may be less than 30% while lignitic coal may be more than 70% are tentative proportions.