What you always wanted to know about powdered activated carbons
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EINHEIT
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ADSORBA®-A-(N)
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Iodine number
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mg/g
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1050
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Macro pores
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ml/g
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0,37
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Micro pores
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ml/g
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0,49
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Molasse/Melasse
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mg
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200
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Particle size D90
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µm
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98 (70)
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Permeability
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Darcy
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5,0 (3,2)
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Reduction of H2O2*
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[min]
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>18
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*Values in brackets are only given if they are different than the first value for ADSORBA®-A.
t ¾* : gives the time, which is needed to reach 75 % of the temperature increase when peroxide is decomposed.
(exothermal reaction)
OUR LITTLE ABC FOR ACTIVATED CARBON
IODINE NUMBER
This value indicates, how much iodine can be adsorbed at a gram of activated carbon.
The higher the value the better the quality of the activated carbon.
MACRO PORES
The higher the concentration of macro pores in the activated carbon, the better the material
transfer to the inside of the activated carbon, because all molecules, which are to be adsorbed,
must pass these pores. Therefore, this value must be as large as possible.
MICRO PORES
(See iodine number). This value must also be as high as possible, since it is a measure for how
much the activated carbon can adsorb.
MOLASSE / MELASSE
This value indicates, how many activated carbon is needed in order to deodorize a melasses
solution. Since melasse is like trihalogeneous-methane-forming organic compounds, which are
arising in the pool water, of large molecular size, this value is very important. This number must
be as low as possible in order to use less activated carbon.
PARTIKELGRÖßE D90
This value indicates, that 90 % of all particles are smaller than this value. The D90
of ADSORBA®-N is 70 μm and of ADSORBA®-A 98 μm.
ADSORBA®-N for sand filter is a finer grain otherwise the service live of the sand filter would be
strongly reduced. Rougher activated carbon would quickly block the surface of the sand filter.
ADSORBA®-A for precoat filters is rougher, because the ashored filter cake must have a high
permeability in order to make a long service live possible
PERMEATBILITY
The permeability or water permeability is determined in Darcy and must be as large as possible
so that as little resistance as possible is given to the water being filtered
REDUCTION OF PEROXIDE
The most important criterion for your choice of catalytic activated carbon is the dismantling of
hydrogen peroxide. By a special very complex process, the already very good catalytic characteristics
of our classical powder activated carbons ADSORBA®-N and ADSORBA®-A continue
to be optimized. The catalytic achievement of ADSORBA®-SuperKat is higher up to 30 %
compared to our standard carbons