Grantee Research Project Results
Final Report: Aqueous Electrostatic Concentrator to Remove Per- andPoly-fluoroalkylSubstances from Water
EPA Contract Number: 68HERD19C0017Title: Aqueous Electrostatic Concentrator to Remove Per- andPoly-fluoroalkylSubstances from Water
Investigators: Jackson, Kevin B
Small Business: BioLargo, Inc.
EPA Contact: Richards, April
Phase: I
Project Period: May 1, 2019 through October 31, 2019
Project Amount: $99,841
RFA: Small Business Innovation Research (SBIR) - Phase I (2019) RFA Text | Recipients Lists
Research Category: Small Business Innovation Research (SBIR) , Small Business Innovation Research (SBIR): Phase 1 (2019) , SBIR - Water Quality
Description:
Summary/Accomplishments (Outputs/Outcomes):
Conclusions:
The study found total current to be reliable predictor of PFAS removal, and with less total current required for the same PFAS removal at lower initial feed salt concentrations. In conducting testing a number of parameters appeared to be inter-related. The study found voltage to be a predictor of overall cell resistance, with resistance inversely proportional to a nonlinear function of voltage. Other AEC resistance predictors included AEM and CEM Chamber and feed conductivity.
Figure 1. Laboratory Activity
Figure 2. Total Current Required for PFOS Removal at 10ppb|Feed.
BioLargo is continuing to conduct testing on the bench scale unit and is exploring siting option for a field demonstration unit. The initial field pilot is expected to be sized with a capacity in the range of 1 to 5 ghallong per minute (gpm).
Figure 3. Energy Cost at Specified Total PFOA and PFOS Removal
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.