Activation of persulfate by Fe(III) species: Implications for 4-tert-butylphenol degradation

Wu, Yanlin; Prulho, Romain; Brigante, Marcello; Dong, Wenbo; Hanna, Khalil; Mailhot, Gilles

doi:10.1016/j.jhazmat.2016.10.013

Cited by 102 publications

(21 citation statements)

References 58 publications

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“…This could stimulate redox reaction that results in mobilization and remobilization of Fe into the particulate form. Iron mobilization is known for his ability to precipitate SO 4 , NO 3 Mn 2+ , and phosphate [49]. Though not a direct linkage between climate change and groundwater quality, this complex linkage chain is a plausible linking mechanism.…”

Section: Parametersmentioning

confidence: 99%

Assessing the Impact of Climate Change on Groundwater Quality of the Shallow Coastal Aquifer of Eastern Dahomey Basin, Southwestern Nigeria

Aladejana

Kalin

Sentenac

et al. 2020

Water

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Despite the increasing interest in climate change and water security, research linking climate change and groundwater quality is still at an early stage. This study explores the seasonal effect of the change in biogeochemical process for the redox-sensitive ions and metals Fe2+, Mn2+, SO42−, and NO3− to assess the groundwater quality of the shallow coastal aquifer of Eastern Dahomey Basin in southwestern Nigeria. Field physicochemical measurement of EC, pH TDS, Eh, salinity, temperature, and the static water level (SWL) was carried out on 250 shallow wells; 230 water samples were collected for analysis between June 2017 and April 2018. A spatial distribution map of these ions and metals showed an increasing concentration in the dry season water samples compared to those of the wet season. This higher concentration could be attributed to change in the intensity of hydrochemical processes such as evaporation, redox, and mineral precipitation. Results of linear regression modelling established significant relationships between SWL, SO42−, NO3−, Fe, and Eh for both wet and dry seasons with the p-value falling between 75% and 95%, which can also be seen in the plots of Eh/ORP against Fe2+, Mn2+, SO42−, and NO3−. These results revealed the influence of the redox process for both seasons, while also having a higher impact in the dry season while variation of concentration revealed decrease with increase in depth, which could be attributed to a decrease in well hydraulic properties and aeration. An Eh-pH geochemical diagram revealed NO3− as the controlling biogeochemical process over Fe in most of the sample wells. Concentrations of NO3−, Fe, and Mn are above the World Health Organization’s (WHO) standard for drinking water in most water samples. This study has established the link between climate change and groundwater quality in shallow coastal aquifers and suggested the need for strategic groundwater management policy and planning to ameliorate groundwater quality deterioration.

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Section: Parametersmentioning

confidence: 99%

Assessing the Impact of Climate Change on Groundwater Quality of the Shallow Coastal Aquifer of Eastern Dahomey Basin, Southwestern Nigeria

Aladejana

Kalin

Sentenac

et al. 2020

Water

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“…•− precursors in previously reported investigations [6][7][8][9][10][11][12][13][14] using homogeneous or heterogeneous catalysts containing transition metals such as Fe(II) and Co(II) [15,16]. Recently, bisulfite (HSO 3 − ) has been used to replace PS or PMS in various new transition-metal-catalyzed SR-AOPs systems used for oxidation of several contaminants, such as azo dyes [17][18][19], phenols, aromatic amines, and arsenite [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Enhanced oxidation of aniline using Fe(III)-S(IV) system: Role of different oxysulfur radicals

Yuan

Luo

et al. 2019

Chemical Engineering Journal

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In this paper, the efficiency of Fe(III)-S(IV) system used for advanced oxidation processes (AOPs) has been investigated using aniline as a pollutant model compound in water. The chemical kinetics, influencing factors, and mechanism of aniline oxidation are examined with an emphasis on the contribution of the different oxysulfur radicals (mainly SO 4 •− and SO 5 •−). Our results show a significant enhancement in the efficiency of aniline oxidation observed at pH 4.0 with 1.0 mM S(IV) and 0.1 mM Fe(III) concentrations. Moreover, the degradation efficiency drastically decreases to 10% in the absence of oxygen indicating the significant role of oxygen in this type of process. Through competition kinetic experiments and radical scavenger experiments, it is shown that SO 5 •− is responsible for about 60% of the aniline oxidation in the Fe(III)-S(IV) system under the typical conditions investigated in this work. For the first time we have determined the second order rate constant between SO 5 − and aniline (5.8 ± 0.6 × 10 6 M −1 s −1 (at pH 3.0) and SO 4 − and aniline 7.7 ± 0.5 × 10 9 M −1 s −1 (at pH 3.0)). Sequential experiments with successive additions of sulfite drastically improve the oxidation efficiency. These findings may provide a precise understanding of the overall mechanism and may have promising implications in developing a new cost-effective technology for the treatment of organic compounds-containing water. Furthermore, the results of this work help to understand the relevance and mechanism of organic contaminants oxidation by SO 5 •− , which has not been given much attention in conventional SR-AOPs using peroxymonosulfate.

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“…Sulfate radical (SO 4 c À )-based advanced oxidation processes (SR-AOPs) are known to be the most effective method to oxidize the bio-recalcitrant organic pollutants. [10][11][12] SR-AOPs are a kind of technology for the in situ generation of the SO 4 c À radical. Moreover, other reactive free radicals with high oxidation potential such as hydroxyl radicals ($OH) and superoxide radicals ($O 2 À ) could be produced by changing the reaction conditions.…”

Section: Introductionmentioning

confidence: 99%

Cu@Co-MOFs as a novel catalyst of peroxymonosulfate for the efficient removal of methylene blue

et al. 2019

RSC Adv.

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Activation of persulfate by Fe(III) species: Implications for 4-tert-butylphenol degradation

Cited by 102 publications

References 58 publications

Assessing the Impact of Climate Change on Groundwater Quality of the Shallow Coastal Aquifer of Eastern Dahomey Basin, Southwestern Nigeria

Assessing the Impact of Climate Change on Groundwater Quality of the Shallow Coastal Aquifer of Eastern Dahomey Basin, Southwestern Nigeria

Enhanced oxidation of aniline using Fe(III)-S(IV) system: Role of different oxysulfur radicals

Cu@Co-MOFs as a novel catalyst of peroxymonosulfate for the efficient removal of methylene blue

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