Removal of perfluorinated surfactants by sorption onto granular activated carbon, zeolite and sludge

Ochoa‐Herrera, Valeria; Sierra-Álvarez, Reyes

doi:10.1016/j.chemosphere.2008.04.029

Cited by 385 publications

(189 citation statements)

References 34 publications

Supporting

Mentioning

175

Contrasting

Unclassified

Order By: Relevance

“…Laboratory scale sorption of the straight chain C 4 and C 8 PFSAs and C 7 PFCA onto activated carbon (granular (GAC) and particulate (PAC)), zeolite, ion exchange resins, and wastewater sludge has been reported. [7,[82][83][84] Increasing perfluoroalkyl chain length and a sulfonic acid head group (versus a carboxylate moiety) increased the sorption onto GAC. [83] For n-PFOS, the relative order of sorption effectiveness was GAC > zeolite > sludge, and increasing silica content was noted as improving sorption to zeolites.…”

Section: Introductionmentioning

confidence: 99%

Congener-specific organic carbon-normalized soil and sediment-water partitioning coefficients for the C₁through C₈perfluoroalkyl carboxylic and sulfonic acids

Rayne

Forest

2009

Journal of Environmental Science and Health, Part A

View full text Add to dashboard Cite

Organic carbon normalized soil and sediment-water partitioning (K oc ) coefficients were estimated for all C 1 through C 8 perfluorinated alkylsulfonic acid (PFSA) and alkylcarboxylic acids (PFCA) congeners. The limited experimental K oc dataset for the straight chain C 7 through C 10 PFCAs and C 8 and increasing perfluoroalkyl chain length and linearity increase K oc values with substantial intra-and interhomologue variation and interhomologue mixing. Variability in K oc values among the PFCA and PFSA congeners will likely lead to an enrichment of more linear and longer chain isomers in organic matter fractions, resulting in aqueous phases fractionated towards shorter chain branched congeners. The expected magnitude of fractionation will require inclusion in source apportionment models and risk assessments. A comparison of representative established quantitative structure property relationships for estimated K oc values from octanol-water partitioning constants suggests that equilibrium partitioning frameworks may be applicable towards modeling PFCA and PFSA environmental fate processes and warrants further study using other partitioning coefficients for which suitable experimental data is available.

show abstract

Section: Introductionmentioning

confidence: 99%

Congener-specific organic carbon-normalized soil and sediment-water partitioning coefficients for the C₁through C₈perfluoroalkyl carboxylic and sulfonic acids

Rayne

Forest

2009

Journal of Environmental Science and Health, Part A

View full text Add to dashboard Cite

show abstract

“…The fate and transport of PFOS in the environment greatly depend on its adsorption on soil and sediment (Chen et al, 2012;Higgins and Luthy, 2006;Johnson et al, 2007;Ochoa-Herrera and Sierra-Alvarez, 2008). Soil and sediment are complicated matrices and generally composed of multiple complex components, which could be operationally defined as humin/kerogen, humic/fulvic acid (HA/FA), and inorganic component after chemical treatment (Mikutta et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Experimental and molecular dynamic simulation study of perfluorooctane sulfonate adsorption on soil and sediment components

Zhang

Yan

Jing

2015

Journal of Environmental Sciences

View full text Add to dashboard Cite

Soil and sediment play a crucial role in the fate and transport of perfluorooctane sulfonate (PFOS) in the environment. However, the molecular mechanisms of major soil/sediment components on PFOS adsorption remain unclear. This study experimentally isolated three major components in soil/sediment: humin/kerogen, humic/fulvic acid (HA/FA), and inorganic component after removing organics, and explored their contributions to PFOS adsorption using batch adsorption experiments and molecular dynamic simulations. The results suggest that the humin/kerogen component dominated the PFOS adsorption due to its aliphatic features where hydrophobic effect and phase transfer are the primary adsorption mechanism.Compared with the humin/kerogen, the HA/FA component contributed less to the PFOS adsorption because of its hydrophilic and polar characteristics. The electrostatic repulsion between the polar groups of HA/FA and PFOS anions was attributable to the reduced PFOS adsorption. When the soil organic matter was extracted, the inorganic component also plays a non-negligible role because PFOS molecules might form surface complexes on SiO 2 surface.The findings obtained in this study illustrate the contribution of organic matters in soils and sediments to PFOS adsorption and provided new perspective to understanding the adsorption process of PFOS on micro-interface in the environment.

show abstract

“…Fluorocarbons also have important environmental significance because of their long lifetime and high ozone depletion and global warming potential. Understanding the adsorption behaviour of fluorocarbons is of fundamental importance in specific applications such as separating mixtures [1][2][3] , developing thermally driven cooling devices 4 , etching dielectrics for integrated circuits and wastewater cleanup 5 .…”

mentioning

confidence: 99%

Fluorocarbon adsorption in hierarchical porous frameworks

et al. 2014

View full text Add to dashboard Cite

Metal-organic frameworks comprise an important class of solid-state materials and have potential for many emerging applications such as energy storage, separation, catalysis and bio-medical. Here we report the adsorption behaviour of a series of fluorocarbon derivatives on a set of microporous and hierarchical mesoporous frameworks. The microporous frameworks show a saturation uptake capacity for dichlorodifluoromethane of 44 mmol g À 1 at a very low relative saturation pressure (P/P o ) of 0.02. In contrast, the mesoporous framework shows an exceptionally high uptake capacity reaching 414 mmol g À 1 at P/P o of 0.4. Adsorption affinity in terms of mass loading and isosteric heats of adsorption is found to generally correlate with the polarizability and boiling point of the refrigerant, with dichlorodifluoromethane 4chlorodifluoromethane 4chlorotrifluoromethane 4tetrafluoromethane 4methane. These results suggest the possibility of exploiting these sorbents for separation of azeotropic mixtures of fluorocarbons and use in eco-friendly fluorocarbon-based adsorption cooling.

show abstract

Removal of perfluorinated surfactants by sorption onto granular activated carbon, zeolite and sludge

Cited by 385 publications

References 34 publications

Congener-specific organic carbon-normalized soil and sediment-water partitioning coefficients for the C₁through C₈perfluoroalkyl carboxylic and sulfonic acids

Congener-specific organic carbon-normalized soil and sediment-water partitioning coefficients for the C₁through C₈perfluoroalkyl carboxylic and sulfonic acids

Experimental and molecular dynamic simulation study of perfluorooctane sulfonate adsorption on soil and sediment components

Fluorocarbon adsorption in hierarchical porous frameworks

Contact Info

Product

Resources

About

Removal of perfluorinated surfactants by sorption onto granular activated carbon, zeolite and sludge

Cited by 385 publications

References 34 publications

Congener-specific organic carbon-normalized soil and sediment-water partitioning coefficients for the C1through C8perfluoroalkyl carboxylic and sulfonic acids

Congener-specific organic carbon-normalized soil and sediment-water partitioning coefficients for the C1through C8perfluoroalkyl carboxylic and sulfonic acids

Experimental and molecular dynamic simulation study of perfluorooctane sulfonate adsorption on soil and sediment components

Fluorocarbon adsorption in hierarchical porous frameworks

Contact Info

Product

Resources

About

Congener-specific organic carbon-normalized soil and sediment-water partitioning coefficients for the C₁through C₈perfluoroalkyl carboxylic and sulfonic acids

Congener-specific organic carbon-normalized soil and sediment-water partitioning coefficients for the C₁through C₈perfluoroalkyl carboxylic and sulfonic acids