A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rapid Removal of Poly- and Perfluoroalkyl Substances with Quaternized Wood Pulp
https://orcid.org/0000-0002-6495-8248
https://orcid.org/0000-0003-4743-2698
https://orcid.org/0000-0003-4591-3308
Across the United States, many municipalities are utilizing adsorbents to remove pervasive poly- and perfluoroalkyl substances (PFASs) from their drinking water. However, conventional adsorbents usually require long contact times (minutes to days) to achieve high removal efficiencies. To overcome this limitation, we developed materials that rapidly adsorb anionic PFASs from water within seconds. More specifically, we discovered that cellulose fibers functionalized with cationic amines (quaternized wood pulp (QWP)) removed more than 80% of the most prevalent PFASs (perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA)) within seconds at environmentally relevant concentrations (∼2.5 μg/L). In contrast, the QWPs were less efficient at adsorbing shorter chain PFASs (<30%). The maximum adsorption capacity values of the best QWP were found to be 763 and 605 mg/g for PFOS and PFOA, respectively, which are competitive with both conventional and newer adsorbents. This work highlights how functionalized cellulose fibers, which are both bio-sourced and biodegradable, may be a promising material for advancing water treatment technologies.
A new cellulose-based adsorbent rapidly and effectively removes toxic and pervasive long-chain poly- and perfluoroalkyl substances from water.
Rapid Removal of Poly- and Perfluoroalkyl Substances with Quaternized Wood Pulp
https://orcid.org/0000-0002-6495-8248
https://orcid.org/0000-0003-4743-2698
https://orcid.org/0000-0003-4591-3308
Across the United States, many municipalities are utilizing adsorbents to remove pervasive poly- and perfluoroalkyl substances (PFASs) from their drinking water. However, conventional adsorbents usually require long contact times (minutes to days) to achieve high removal efficiencies. To overcome this limitation, we developed materials that rapidly adsorb anionic PFASs from water within seconds. More specifically, we discovered that cellulose fibers functionalized with cationic amines (quaternized wood pulp (QWP)) removed more than 80% of the most prevalent PFASs (perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA)) within seconds at environmentally relevant concentrations (∼2.5 μg/L). In contrast, the QWPs were less efficient at adsorbing shorter chain PFASs (<30%). The maximum adsorption capacity values of the best QWP were found to be 763 and 605 mg/g for PFOS and PFOA, respectively, which are competitive with both conventional and newer adsorbents. This work highlights how functionalized cellulose fibers, which are both bio-sourced and biodegradable, may be a promising material for advancing water treatment technologies.
A new cellulose-based adsorbent rapidly and effectively removes toxic and pervasive long-chain poly- and perfluoroalkyl substances from water.
Rapid Removal of Poly- and Perfluoroalkyl Substances with Quaternized Wood Pulp
https://orcid.org/0000-0002-6495-8248
https://orcid.org/0000-0003-4743-2698
https://orcid.org/0000-0003-4591-3308
Across the United States, many municipalities are utilizing adsorbents to remove pervasive poly- and perfluoroalkyl substances (PFASs) from their drinking water. However, conventional adsorbents usually require long contact times (minutes to days) to achieve high removal efficiencies. To overcome this limitation, we developed materials that rapidly adsorb anionic PFASs from water within seconds. More specifically, we discovered that cellulose fibers functionalized with cationic amines (quaternized wood pulp (QWP)) removed more than 80% of the most prevalent PFASs (perfluorooctanesulfonic acid (PFOS) and perfluorooctanoic acid (PFOA)) within seconds at environmentally relevant concentrations (∼2.5 μg/L). In contrast, the QWPs were less efficient at adsorbing shorter chain PFASs (<30%). The maximum adsorption capacity values of the best QWP were found to be 763 and 605 mg/g for PFOS and PFOA, respectively, which are competitive with both conventional and newer adsorbents. This work highlights how functionalized cellulose fibers, which are both bio-sourced and biodegradable, may be a promising material for advancing water treatment technologies.
A new cellulose-based adsorbent rapidly and effectively removes toxic and pervasive long-chain poly- and perfluoroalkyl substances from water.
Rapid Removal of Poly- and Perfluoroalkyl Substances with Quaternized Wood Pulp
Harris, Justin T. (author) / de la Garza, Gloria D. (author) / Devlin, Angela M. (author) / McNeil, Anne J. (author)
ACS ES&T Water ; 2 ; 349-356
2022-02-11
Article (Journal)
Electronic Resource
English
| American Chemical Society | 2021
| American Chemical Society | 2024
Longitudinal poly- and perfluoroalkyl substances (PFAS) levels in Dutch infants
| DOAJ | 2022
Poly- and perfluoroalkyl substances (PFAS) exposure through infant feeding in early life
| DOAJ | 2022
Accumulation of perfluoroalkyl substances in human tissues
| Online Contents | 2013