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Pelican utilizes a blend of high-grade
coconut shell based activated carbon and catalytic
coconut shell based activated carbon in the Pelican
Carbon Series Premium Whole House Water Filters. The
purpose of combining two types of carbons is to gain a
wider range of contaminant filtering capabilities
offered from each type of carbon.
GAC filtration is recognized by the Water Quality
Association as an acceptable method to maintain certain
drinking water contaminants within the limits of the EPA
National Drinking Water Standards. Activated carbon
works by attracting and holding certain chemicals as
water passes through it. Activated carbon is a highly
porous material; therefore, it has an extremely high
surface area for contaminant adsorption. |
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What is Adsorption? |
Adsorption is the adhesion of atoms, ions, biomolecules
or molecules of gas, liquid, or dissolved solids to a
surface.
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Adsorption verses Absorption |
The process of "adsorption" is highly different from the
definition of "absorption." Where "absorption" occurs
when a substance penetrates a solid, "adsorption" refers
to a substance adhering to the surface of a solid.
Activated carbon is utilized in the adsorption process,
and is most often involved in the purification of
drinking water. It can be made from several materials,
of which, the most popular are coal, wood and coconut
shells due to the large size of their surfaces and the
extent to which they are porous. The larger the pore
size and surface area of the media, the longer the
activated carbon functions.
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What is activated carbon? |
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Activated carbons are manufactured from coconut shell,
peat, hard and soft wood, lignite coal, bituminous coal,
olive pits and various specialty materials. Manufactured
by chemical or high temperature steam activation, this
highly porous adsorptive medium has a complex structure
that is composed primarily of carbon atoms. Its network
of pores within a rigid carbon skeleton consists of
disordered layers of carbon atoms which are linked
together by random chemical or carbon bonds. These
carbon layers are stacked unevenly, creating a structure
with various shaped and sized cavities between the
carbon layers. The basic mechanism through which
activated carbon removes impurities from gases or
liquids through the attraction of molecules into this
network of pores is referred to as adsorption.
Adsorption is the key to the performance of activated
carbon.
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About coconut shell based activated carbon |
 Pelican
uses non-chemically impregnated coconut based activated
carbons that have been surface modified during
manufacturing. This surface modification significantly
enhances its ability for superior removal efficiency and
rapid decomposition of chlorine and chloramines. Coconut
shell activated carbon is the preferred carbon to remove
volatile organic compounds (VOC's) from drinking water
in POE systems.Coconut shell Activated Carbon (AC) is
also more environmentally friendly or green. The coconut
tree produces coconuts three times a year. The tree is
not killed to harvest the coconut shells; therefore it's
from a renewable resource. In addition, part of the
carbon dioxide produced during manufacture of coconut
shell carbon is removed by the coconut trees and
produces oxygen.
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About Pelican Carbon