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ENGINEERS INDIA RESEARCH INSTITUTE
4/54, Roop Nagar, Delhi-110007 (India)
Phone: 9289151047, 9811437895, 9811151047
E-mail:
[email protected]
Website: www.eiriindia.org
ACTIVATED CARBON (RAW MATERIAL
– WOOD CHIPS) – 1200 TPA
[EIRI/EDPR/4710]
J.C.: 2930RUB, 2930INR
Carbon is probably the most widely distributed element in nature. It occurs in two
allotropic crystalline forms viz. graphite (hexagonal system) and diamond (isomeric
system), the former is soft and black while diamond is hard and transparent.
Charcoal, coke and carbon black, classified as amorphous carbon; are considered
by some to represent a third allotropic form. They are said to be composed of very
minute crystals of graphite by others. Carbon is an essential constituent of all
vegetable and animal matter in which it occurs in combination with hydrogen,
nitrogen, oxygen and other elements in immense variety of compounds. In
combination with hydrogen it occurs as hydrocarbons in petroleum. It is also
found in carbon dioxide in air (0.03% as sodium bicarbonate in sea water, and as
calcium and magnesium carbonate in sedimentary rocks such as chalk and
dolomite.
Many carbons of industrial value are prepared from coal and from organic
vegetable and animal matter. The resulting amorphous products include charcoal,
coke and petroleum coke. Several carbon products are prepared and used in the
electrical and electro-chemical industry.
Carbon 13, a stable isotope of carbon (At wt 13) has recently come into
prominence as a tracer element employed in the study of biological process. It is
obtained from carbon compounds by concentrating the minute quantity of the
heavier isotope, normally present in them, by thermal diffusion methods. Carbon
14 or radioactive carbon, a product of the uranium atomic pile, is used also as a
tracer element in the study of plant and animal metabolism.