Treatment technologies for aqueous perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA)
Chad D. VECITIS, Hyunwoong PARK, Jie CHENG, Brian T. MADER, Michael R. HOFFMANN
《环境科学与工程前沿（英文）》
2009年
第3卷
第2期
页码 129-151
doi:
10.1007/s11783-009-0022-7
摘要：
Fluorochemicals (FCs) are oxidatively recalcitrant, environmentally persistent, and resistant to most conventional treatment technologies. FCs have unique physiochemical properties derived from fluorine which is the most electronegative element. Perfluorooctanesulfonate (PFOS), and perfluorooctanoate (PFOA) have been detected globally in the hydrosphere, atmosphere and biosphere. Reducing treatment technologies such as reverses osmosis, nano-filtration and activated carbon can? remove ?FCs ?from ?water. ?However,? incineration ?of the concentrated waste is required for complete FC destruction. Recently, a number of alternative technologies for FC decomposition have been reported. The FC degradation technologies span a wide range of chemical processes including direct photolysis, photocatalytic oxidation, photochemical oxidation, photochemical reduction, thermally-induced reduction, and sonochemical pyrolysis. This paper reviews these FC degradation technologies in terms of kinetics, mechanism, energetic cost, and applicability. The optimal PFOS/PFOA treatment method is strongly dependent upon the FC concentration, background organic and metal concentration, and available degradation time.
关键词：
fluorochemical (FC) degradation technologies
perfluoroctanesulfonate (PFOS)
perfluorooctanoate
(PFOA)
oxidation
reduction
photolysis
thermolysis
review
Removal, distribution and plant uptake of perfluorooctane sulfonate (PFOS) in a simulated constructed
Weichuan Qiao, Rong Li, Tianhao Tang, Achuo Anitta Zuh
《环境科学与工程前沿（英文）》
2021年
第15卷
第2期
doi:
10.1007/s11783-020-1312-3
摘要：
Abstract • PFOS was removed by soil adsorption and plant uptake in the VFCW. • Uptake of PFOS by E. crassipes was more than that of C. alternifolius. • PFOS in wastewater can inhibit the removal of nutrients. • Dosing with PFOS changed the soil microbial community in the VFCW. A vertical-flow constructed wetland (VFCW) was used to treat simulated domestic sewage containing perfluorooctane sulfonate (PFOS). The removal rate of PFOS in the domestic sewage was 93%–98%, through soil adsorption and plant uptake, suggesting that VFCWs can remove PFOS efficiently from wastewater. The removal of PFOS in the VFCW was dependent on soil adsorption and plant uptake; moreover, the percentage of soil adsorption was 61%–89%, and was higher than that of the plants uptake (5%–31%). The absorption capacity of Eichhornia crassipes (E. crassipes) (1186.71 mg/kg) was higher than that of Cyperus alternifolius (C. alternifolius) (162.77 mg/kg) under 10 mg/L PFOS, and the transfer factor of PFOS in E. crassipes and C. alternifolius was 0.04 and 0.58, respectively, indicating that PFOS is not easily translocated to leaves from roots of wetland plants; moreover, uptake of PFOS by E. crassipes was more than that of C. alternifolius because the biomass of E. crassipes was more than that of C. alternifolius and the roots of E. crassipes can take up PFOS directly from wastewater while C. alternifolius needs to do so via its roots in the soil. The concentration of 10 mg/L PFOS had an obvious inhibitory effect on the removal rate of total nitrogen, total phosphorus, chemical oxygen demand, and ammonia nitrogen in the VFCW, which decreased by 15%, 10%, 10% and 12%, respectively. Dosing with PFOS in the wastewater reduced the bacterial richness but increased the diversity in soil because PFOS stimulated the growth of PFOS-tolerant strains.
关键词：
Vertical-flow constructed wetland
Perfluorooctane sulfonate
Wetland plants
Soil microbial community
Effect
Speciality: Wetlands
Transformation
Organic pollutants
Phytoremediation
Exposure assessment
Sewage
Selective sorption of perfluorooctane sulfonate on molecularly imprinted polymer adsorbents
Shubo DENG, Danmeng SHUAI, Qiang YU, Jun HUANG, Gang YU
《环境科学与工程前沿（英文）》
2009年
第3卷
第2期
页码 171-177
doi:
10.1007/s11783-009-0017-4
摘要：
Perfluorooctane sulfonate (PFOS), as a potential persistent organic pollutant, has been widely detected in water environments, and has become a great concern in recent years. PFOS is very stable and difficult to decompose using conventional techniques. Sorption may be an attractive method to remove it from water. In this study, the molecularly imprinted polymer (MIP) adsorbents were prepared through the polymerization of 4-vinylpyridine under different preparation conditions in order to remove perfluorooctane sulfonate (PFOS) from water. The MIP adsorbents using perfluorooctanoic acid (PFOA) as the template had good imprinting effects and could selectively remove PFOS from aqueous solution. The sorption behaviors including sorption kinetics, isotherms, and effect of pH, salt, and competitive anions were investigated. Experimental results showed that the sorption of PFOS on the MIP adsorbents was very fast, pH-dependent, and highly selective. The achieved fast sorption equilibrium within 1 h was attributed to the surface sorption on the fine adsorbents. The sorption isotherms showed that the sorption selectivity of PFOS on the MIP adsorbents decreased at high PFOS concentrations, which may be due to the double-layer sorption and the formation of PFOS micelles on the sorbent surface. The sorption of PFOS on the MIP adsorbents was mainly dominated by the electrostatic interaction between the protonated vinylpyridine on the adsorbent surface and the anionic PFOS. The prepared MIP adsorbents can potentially be applied in water and wastewater treatment for selective removal of PFOS.
关键词：
perfluorooctane sulfonate (PFOS)
molecularly imprinted polymer (MIP) adsorbents
selective sorption
electrostatic interaction
Determination of polyfluoroalkyl compounds in water and suspended particulate matter in the river Elbe and North Sea, Germany
Lutz AHRENS, Merle PLASSMANN, Zhiyong XIE, Ralf EBINGHAUS
《环境科学与工程前沿（英文）》
2009年
第3卷
第2期
页码 152-170
doi:
10.1007/s11783-009-0021-8
摘要：
The distribution of polyfluoroalkyl compounds (PFCs) in the dissolved and particulate phase and their discharge from the river Elbe into the North Sea were studied. The PFCs quantified included C -C perfluorinated sulfonates (PFSAs), 6∶2 fluorotelomer sulfonate (6∶2 FTS), C and C perfluorinated sulfinates (PFSiAs), C -C perfluorinated carboxylic acids (PFCAs), perfluoro-3,7-dimethyl-octanoic acid (3,7m -PFOA), perfluorooctane sulfonamide (FOSA), and n-ethyl perfluroctane sulfonamidoethanol (EtFOSE). PFCs were mostly distributed in the dissolved phase, where perfluorooctanoic acid (PFOA) dominated with 2.9-12.5 ng/L. In the suspended particulate matter FOSA and perfluorooctane sulfonate (PFOS) showed the highest concentrations (4.0 ng/L and 2.3 ng/L, respectively). The total flux of ∑PFCs from the river Elbe was estimated to be 802 kg/year for the dissolved phase and 152 kg/year for the particulate phase. This indicates that the river Elbe acts as a source of PFCs into the North Sea. However, the concentrations of perfluorobutane sulfonate (PFBS) and perfluorobutanoic acid (PFBA) in the North Sea were higher than that in the river Elbe, thus an alternative source must exist for these compounds.
关键词：
polyfluoroalkyl compounds (PFCs)
perfluorooctane sulfonate (PFOS)
perfluorooctanoic acid (PFOA)
surface water
water-particulate partitioning
标题
作者
时间
类型
操作
Treatment technologies for aqueous perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA)
Chad D. VECITIS, Hyunwoong PARK, Jie CHENG, Brian T. MADER, Michael R. HOFFMANN
期刊论文
Thermal defluorination behaviors of PFOS, PFOA and PFBS during regeneration of activated carbon by molten
期刊论文
Removal, distribution and plant uptake of perfluorooctane sulfonate (PFOS) in a simulated constructed
Weichuan Qiao, Rong Li, Tianhao Tang, Achuo Anitta Zuh
期刊论文
Selective sorption of perfluorooctane sulfonate on molecularly imprinted polymer adsorbents
Shubo DENG, Danmeng SHUAI, Qiang YU, Jun HUANG, Gang YU
期刊论文
Determination of polyfluoroalkyl compounds in water and suspended particulate matter in the river Elbe and North Sea, Germany
Lutz AHRENS, Merle PLASSMANN, Zhiyong XIE, Ralf EBINGHAUS
期刊论文
Effect of co-existing organic compounds on adsorption of perfluorinated compounds onto carbon nanotubes
Shubo DENG,Yue BEI,Xinyu LU,Ziwen DU,Bin WANG,Yujue WANG,Jun HUANG,Gang YU
期刊论文
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