Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Integrity of HDPE Pond Liner Systems during and after PFAS Flocculation and Stabilization
The class of emerging per- and polyfluoroalkyl substances (PFAS) is a challenge for environmental remediation. In lined ponds with PFAS contaminated water there are several options for treatment, including in situ treatment within the pond. In the case of a lined pond, in situ treatment of the PFAS was proposed via flocculation and subsequent stabilization of dissolved and particle associated PFAS with chemical flocculants. This pond has a high-density polyethylene liner system that could be vulnerable to damage or distress from treatment activities. To evaluate the integrity of the liner system during and after treatment, an integrity testing program was undertaken. After aging in solution, coupons were visually inspected and then mechanically tested for tensile capacity. Both visual inspection and mechanical tensile testing showed that none of the flocculants or other chemical treatment alternatives resulted in significant deterioration of the liner, although high concentrations of one polymer flocculant showed low levels of attack on the liner material.
Integrity of HDPE Pond Liner Systems during and after PFAS Flocculation and Stabilization
The class of emerging per- and polyfluoroalkyl substances (PFAS) is a challenge for environmental remediation. In lined ponds with PFAS contaminated water there are several options for treatment, including in situ treatment within the pond. In the case of a lined pond, in situ treatment of the PFAS was proposed via flocculation and subsequent stabilization of dissolved and particle associated PFAS with chemical flocculants. This pond has a high-density polyethylene liner system that could be vulnerable to damage or distress from treatment activities. To evaluate the integrity of the liner system during and after treatment, an integrity testing program was undertaken. After aging in solution, coupons were visually inspected and then mechanically tested for tensile capacity. Both visual inspection and mechanical tensile testing showed that none of the flocculants or other chemical treatment alternatives resulted in significant deterioration of the liner, although high concentrations of one polymer flocculant showed low levels of attack on the liner material.
Integrity of HDPE Pond Liner Systems during and after PFAS Flocculation and Stabilization
Rahman, Rashed (Autor:in) / Lingwall, Bret N. (Autor:in) / Kunza, Lisa (Autor:in) / Chowanski, Kurt (Autor:in) / Menkhaus, Todd (Autor:in)
Geo-Congress 2022 ; 2022 ; Charlotte, North Carolina
Geo-Congress 2022 ; 159-168
17.03.2022
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Integrity of HDPE Pond Liner Systems during and after PFAS Flocculation and Stabilization
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