Active carbon fibers and filter adsorption unit for water purification comprising said fibers
AssigneeToho Beslon Co., Ltd.
InventorKenji Shimazaki
Life of this patent
Estimating the term…
Abstract
Active carbon fibers derived from acrylic fibers and having a BET specific surface area (SA) of 800 to 2,000 m.sup.2 /g, a pore volume (Vp) to (SA) ratio, i.e., (Vp)/(SA), of from 5.times.10.sup.-4 to 14.5.times.10.sup.-4, and a methylene blue adsorption rate constant of not less than 5.times.10.sup.-1 sec.sup.-1, and a filter adsorption unit for water purification using said active carbon fibers; the unit is useful to remove compounds having a wide range of molecular weights from an aqueous liquid.
Claims7
A filter adsorption unit for water purification, comprising a vessel having an inlet for water to be treated, a packing space for active carbon fibers and an outlet for treating water, said packing space further containing at least first active carbon fibers being derived from acrylic fibers and having a BET specific surface area (SA.sub.1) of from 800 to 2,000 m.sup.2 /g, a ratio (S.sub.1) of pore volume (Vp.sub.1) to BET specific surface area (SA.sub.1) of from 5.times.10.sup.-4 to 14.5.times.10.sup.-4, and a methylene blue adsorption rate constant (MB.sub.1) of not less than 5.times.10.sup.-1 sec.sup.-1.
Dependencies are inferred from the claim text.