Arsenic Research Project
Partners:
Engelhard Corporation, Iselin, NJ
B.F. Environmental Consultants, PA,
and Wilkes University,
Wilkes- Barre, PA
Project Status and Milestones
as of March 8, 2002
1. Initial permeability testing of the
materials has been completed.
2. Preliminary flow through testing
chamber has been redesigned and pilot unit has been constructed.
3. Static testing of the materials for
As V and As III removal at ambient pH and pH 7 has been completed.
4. Initial kinetics testing for As V
removal at pH 7 using 7 materials at an initial total arsenic concentration of 100 ppb to 1 mg/L has been completed.
5.Preliminary testing has been conducted to determine the effect of the solution
pH and the arsenic removal capacity of the materials.
Photos of Various Phases of Project
Initial Static Testing
|
Mixing Apparatus Used
to Conduct Static Testing
|
Samples were then filtered preserved with acid, digested and analyzed for
Arsenic using a Graphite Furnace.
|
Kinetics Experiments
Because mixing did NOT provide adequate contact the
with the material |
An EPA tumbling / extraction device was used to try and maximize contact
between the material and the fluid
|
As part of the Kinetics Experiments, the seven materials were evaluated by
exposing a controlled amount of the material to a known mass of arsenic.
Subsamples were collected at the following time intervals: 1 minute, 15 minutes,
30 minutes, 2 hours, 4 hours, 8 hours, and 24 hours.
|
As part of the project, the pH / mv of the test solution was monitored prior
to starting the testing and during each sampling. A series of
samples were tested under a variety of solution pH.
|
After preservation and digestion the samples were analyzed by Graphite
Furnace Atomic Absorption. During the analysis, know samples were
evaluated to evaluate the accuracy of the data.
|
A preliminary summary report has been submitted by Dr. Brian Whitman and Mr.
Brian Oram to Mrs.
Valerie Bell, Engelhard Project Researcher.
The laboratory technician in the photos is Mr. John Pagoda. He is a
research assistant and consultant working with the Center for Environmental Quality
at Wilkes University.
B.F.
Environmental Consultants
15 Hillcrest Drive
Dallas, PA 18612
Phone (570) 675 - 0253
Fax (570) 675 - 0253
Mr. Brian Oram, Principle and Primary Researcher
!!! Thank You For Visiting !!!
PS: Hello Valerie !
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