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Tramfloc Is Pleased To Announce
We Have Updated Our Site For
Easier Access And A Fresh Face. |
For the last twenty-five years, activated alumina has been associated
with and has been accepted as the preferred media for arsenic removal
from water. We have have moved ahead to meet
the growing demand for an improved product to comply with new USEPA
mandates covering arsenic levels in drinking water, more stringent requirements
for allowable levels of arsenic in water supplies in other countries, and
to assist in finding the solution to the growing water problems.
We have increased the adsorption capacity of our activated alumina to over
five times that of standard activated alumina products!
Taking the already successful media and adding a patented, proprietary
enhancement, Tramfloc offers AAFS50 the easiest, and most
cost-effective media available today. Tests on systems already in the
field have yielded results in which arsenic levels of over 1200 µg/l have
been reduced to less than 5 µg/l. AAFS50 has been approved for
use in drinking water applications by the NSF.
Historically, regeneration was the accepted route for making activated
alumina systems cost effective. Regeneration, however, has some detriments:
disposal of the regeneration effluent, additional processing steps, and the
handling and storage of chemicals, not applicable to point-of-use (POU)
systems. The high adsorption capability of AAFS-50 makes it cost
effective for one-time use and disposal. The material has met USEPA
leachability standards (TCLP) and can be landfilled. AAFS50 is
a robust material that is easy to handle and will not break down over time
causing fouling or pressure drop. It is effective on both Arsenic III and
Arsenic V (higher capacity on As V, chlorination enhances performance).
Low media cost, coupled with the simple flow-through design (5-8 minute EBCT),
makes AAFS50 the preferred media for the task of arsenic removal in
most situations.
The performance of activated alumina and AAFS50 in any application
will depend on the water used. The data provied herein is only for guideline
purposes. Users are advised to check the performance of the products prior
to their adoption into any system.
Arsenic commonly occurs in two forms: As(V) (arsenate) and As(III) (arsenite).
Maximum arsenic capacity is achieved when dealing with As(V).
AAFS50's capacity for As(III) adsorption is about 60%-70% its capacity for
As(V). Oxidation is recommended to assist with As(III) removal, when possible.
For example, simple chlorination may achieve 30%-40% higher As(III) capacities
than non-oxidized systems.
AAFS50 can be effective at a wide range of pH levels depending on
competing ions present. Where high levels of silica are present, along with
a pH level higher than 7.0, an adjustment may be necessary for optimum
results.
The performance of any absorbent is dependent on the water being treated. The
data provided is for guideline purposes only. Users are advised to check
performance prior to their adoption into a system.
Available in granular form in sizes 28 x 48 mesh, with other sizes being
supplied on special request.
Packaged in 907 kg (2,000 lb.) super bags, 158 kg (350 lb.), 45 kg (100 lb.),
and 22 kg (50 lbs.) boxes. Other forms of packaging can be considered on
special request.
CHEMICAL ANALYSIS of AAFS50
Constituents Weight %
Al2O3 + proprietary additive 83
Silicon as SiO2 0.020
Titanium as TiO2 0.002
Loss on Ignition 17
PHYSICAL PROPERTIES of AAFS50
Bulk Density (g/cm3) 0.91
BET Area (m2/g) 220
Attrition (%) 0.3
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