Study of hybrid membrane filtration and photocatalysis for removal of perfluorooctanoic acid (PFOA) in groundwater

Water Science and Technology : a Journal of the International Association on Water Pollution Research
Apisara Boonya-AtichartNarin Boontanon

Abstract

Groundwater contamination in Thailand from leaking of leachate due to improper solid waste disposal can cause contamination by PFOA (one of the perfluorinated compounds). This study proposed a new idea for the removal of PFOA from groundwater using a combination of membrane filtration and photocatalysis. Spiked groundwater samples were treated by nanofiltration and the rejected part was sent to a UV contact tank for photocatalysis. All samples were analyzed by high-performance liquid chromatography-tandem mass spectrometer (HPLC-MS/MS). The results showed that the removal efficiency of nanofiltration was 99.62%, and the rejected part was degraded by photocatalysis at an efficiency of 59.64%. Thus, the contaminants released to the environment were only 34.23%, which is around three times lower than nanofiltration alone. The results of this technical feasibility study proved that hybrid membrane filtration and photocatalysis are able to remove and degrade the contaminants in the rejected part significantly before being released to the environment, which has been the biggest gap in the processing of membrane filtration, and should be studied further in other aspects, such as fouling effects, energy consumption, and operating costs...Continue Reading

References

Dec 22, 2006·Environmental Science & Technology·Chuyang Y TangJames O Leckie
Apr 21, 2010·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Keith R Cooper
Dec 16, 2016·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Apisara Boonya-AtichartNarin Boontanon

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Citations

Apr 16, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Xiaoju YanJinfeng Lu
Aug 1, 2020·Toxicological Sciences : an Official Journal of the Society of Toxicology·Philip E GoodrumGraham K Ansell
May 7, 2021·Journal of Hazardous Materials·Bentuo XuWenhui Qiu
Aug 25, 2021·The Science of the Total Environment·Sanny VermaMallikarjuna N Nadagouda

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