| Item |
Activated carbon fiber |
Granular activated carbon |
| material |
composed Micropore
Micropore capacity 0.3 ~ 0.7 x 106 §³/g
specific surface area 700 ~ 2500 §³/g
|
composition of three kinds, Macropre,
Mesopore, Micropore. adsorption
occurs in micropores
specific surface and pore volume are
|
vapor activated carbon |
zinc chloride activated carbon |
|
pore
volume
(§¢/g)
|
specific
surface
area
(§³/g)
|
pore
volume
(§¢/g)
|
specific
surface
area
(§³/g)
|
| Micro |
0.25~0.6 |
700~1400 |
0.4~0.9 |
500~1500 |
| Meso |
0.02~0.2 |
1~200 |
0.3~1.0 |
200~800 |
| Macro |
0.2~0.5 |
0.5~2 |
|
|
|
|
specific surface area
|
700 ~ 2,500 §³/g
|
700 ~ 1,000 §³/g
|
|
adsorption rate of benzene
|
45 ~ 50 %
|
30 ~ 35 %
|
|
packing density
|
-
|
0.45 g/§¨
|
|
adsorption speed
|
over 10 times faster than granular activated carbon
|
|
|
adsorptiveheat
|
rare
|
much
|
|
purity
|
showing a maximum performance with a 100% purity(over 94.5% of carbon added)
|
performance could sharply decrease, if a large deal of impurities is added during manufacturing
|
|
Regeneration
|
to heat and regenerate under 100 ¡Éof warm air or steam
|
special equipments needed(with about 400 ¡É of high-pressure steam)
|
|
Problems during operation
|
no possibilities of re-contamination and abrasion: not generating packing density or dust
|
Packing density of activated carbons changes due to vibration during operation or their destruction scatters dusts, causing re-contamination.
Air pressure brings about abrasion of granular activated carbon.
|
|
Price
|
The price is relatively expensive per gram, compared to granular activated carbon, but the filter¡¯s price is almost similar when you process filters with the same size and capability because of little need for other materials. Operation cost is considerably cheap because it is reusable over 4 times.
|
Packing density of activated carbons changes due to vibration during operation or their destruction scatters dusts, causing re-contamination.
Air pressure brings about abrasion of granular activated carbon.
|
|
Characteristics of adsorption and desorption
|
High adsorption rate regardless of boiling points of gas ( 45-50wt% on average) 96 % of amine smell eliminated 100 % of methyl mercaptane eliminated adsorption strength is 10 times higher than that of conventional granular activated carbons.
|
Adsorption rate of gaseous materials from human body and kitchen and cigarette smoke is very low. (30-35wt% on average) 13 % of amine smell eliminated 95 % of methyl mercaptane eliminated
|
Comparative table of Activated carbon fiber and Granular activated carbon
