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Why PFAS Chemicals Are So Difficult to Remediate


Why PFAS Chemicals Are So Difficult to Remediate
In this Q&A, Konstantinos Kostarelos, PhD, discusses new insights he s gained through his team s recent research on PFAS in firefighting foam
April 29, 2021
Konstantinos Kostarelos, PhD.
Konstantinos Kostarelos, PhD, associate professor at the Cullen College of Engineering at the University of Houston, talks to senior digital content editor Rachel Muenz about his team’s recently-published research focusing on per- and polyfluoroalkyl substances (PFAS) in firefighting foam and why these chemicals are difficult to remediate from the environment.
Q: Why is research into PFAS chemicals so important?
A: First, we should note that there are several compounds in the group of chemicals known as PFAS that have been shown to cause adverse health effects. According to the US Environmental Protection Agency, PFOA [perfluorooctanoic acid] and PFOS [perfluorooctanesulfonic acid] can cause reproductive and developmental, ....

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Enhanced Zeolite Catalyst Could Increase Petrochemical Production Profits


Enhanced Zeolite Catalyst Could Increase Petrochemical Production Profits
Written by AZoMApr 28 2021
Aromatics are the main building blocks of polymers, or plastics, that are used to make everything from PET bottles to carry water to breathable, wrinkle-proof polyester clothing. These petrochemicals make up a particular, value-added sector of the energy business.
Aromatics are major building blocks of polymers, or plastics, that turn up as everything from PET bottles for water to breathable, wrinkle-resistant polyester clothing. Image Credit: University of Houston
The technique for refining crude oil into beneficial aromatic streams for derivative use generally involves using a catalyst to enable chemical reactions. Of the different types of catalysts, most of them are zeolites porous aluminosilicates such as ZSM-5, an exclusive synthetic zeolite copiously used in the advancement of chemicals in isomerization and alkylation. ....

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