A combined chemical and biological approach to transforming and mineralizing PAHs in runoff water

Sakulthaew, Chainarong; Comfort, Steve D.; Chokejaroenrat, Chanat; Harris, Clifford E.; Li, Xu

doi:10.1016/j.chemosphere.2014.05.041

Cited by 37 publications

(7 citation statements)

References 49 publications

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“…However, a general problem for the application of bioremediation on PAH-contaminated soils, lies in the usually rather slow degradation rate of these compounds (Coppotelli et al, 2008). The long time required for the application of bioremediation can be shortened if in situ chemical oxidation (ISCO) is firstly applied (Sakulthaew et al, 2014). ISCO has been increasingly regarded as a relevant alternative to conventional treatment technologies for remediation of groundwater and soils contaminated by recalcitrant organic contaminants (Watts and Teel, 2006), including PAHs (Rivas, 2006;Sirguey et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Use of different kinds of persulfate activation with iron for the remediation of a PAH-contaminated soil

Peluffo

Pardo

Santos

et al. 2016

Science of The Total Environment

109

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Section: Introductionmentioning

confidence: 99%

Use of different kinds of persulfate activation with iron for the remediation of a PAH-contaminated soil

Peluffo

Pardo

Santos

et al. 2016

Science of The Total Environment

109

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“…Subsequently, m / z 318 may undergo further oxidation to yield m / z 306. Under our experimental conditions, achieving complete mineralization with minimal catalyst and oxidant dosage was unlikely without the assistance of biological treatment . In addition, Fragkaki et al proposed that the initiation of MT breakdown may result in the formation of a more hydrophilic compound.…”

Section: Resultsmentioning

confidence: 99%

Dual Activation of Peroxymonosulfate Using MnFe₂O₄/g-C₃N₄ and Visible Light for the Efficient Degradation of Steroid Hormones: Performance, Mechanisms, and Environmental Impacts

Poomipuen,

Sakulthaew,

Chokejaroenrat

et al. 2023

ACS Omega

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Single activation of peroxymonosulfate (PMS) in a homogeneous system is sometimes insufficient for producing reactive oxygen species (ROS) for water treatment applications. In this work, manganese spinel ferrite and graphitic carbon nitride (MnFe 2 O 4 /g-C 3 N 4 ; MnF) were successfully used as an activator for PMS under visible light irradiation to remove the four-mostdetected-hormone-contaminated water under different environmental conditions. The incorporation of g-C 3 N 4 in the nanocomposites led to material enhancements, including increased crystallinity, reduced particle agglomeration, amplified magnetism, improved recyclability, and increased active surface area, thereby facilitating the PMS activation and electron transfer processes. The dominant active radical species included singlet oxygen ( 1 O 2 ) and superoxide anions (O 2•− ), which were more susceptible to the estrogen molecular structure than testosterone due to the higher electron-rich moieties. The self-scavenging effect occurred at high PMS concentrations, whereas elevated constituent ion concentrations can be both inhibitors and promoters due to the generation of secondary radicals. The MnF/PMS/vis system degradation byproducts and possible pathways of 17β-estradiol and 17α-methyltestosterone were identified. The impact of hormone-treated water on Oryza sativa L. seed germination, shoot length, and root length was found to be lower than that of untreated water. However, the viability of both ELT3 and Sertoli TM4 cells was affected only at higher water compositions. Our results confirmed that MnF and visible light could be potential PMS activators due to their superior degradation performance and ability to produce safer treated water.

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“…Numerous conventional treatment processes have been applied and tested for wastewater treatment, such as adsorption, coagulation, precipitation, biodegradation, ozonation, electrochemical oxidation, and advanced oxidation processes [43,47,[83][84][85][86][87][88]. Besides that, combining some of these processes, such as the biological-physical, or chemical processes, has been successfully applied in many wastewater treatment plants [89][90][91][92]. Although many of these processes have been considered effective and efficient for removing a wide spectrum of organic pollutants from the wastewater; however, each process has disadvantages that limit the large-scale application, e.g., small capacity, high costs, pH-dependency, limited recyclability, high-energy requirements, incomplete pollutant removal, and generation of toxic secondary materials (Table 2) [87,[93][94][95][96].…”

Section: Methods Of Treatmentmentioning

confidence: 99%

TiO2 Photocatalysis for the Transformation of Aromatic Water Pollutants into Fuels

et al. 2021

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The growing world energy consumption, with reliance on conventional energy sources and the associated environmental pollution, are considered the most serious threats faced by mankind. Heterogeneous photocatalysis has become one of the most frequently investigated technologies, due to its dual functionality, i.e., environmental remediation and converting solar energy into chemical energy, especially molecular hydrogen. H2 burns cleanly and has the highest gravimetric gross calorific value among all fuels. However, the use of a suitable electron donor, in what so-called “photocatalytic reforming”, is required to achieve acceptable efficiency. This oxidation half-reaction can be exploited to oxidize the dissolved organic pollutants, thus, simultaneously improving the water quality. Such pollutants would replace other potentially costly electron donors, achieving the dual-functionality purpose. Since the aromatic compounds are widely spread in the environment, they are considered attractive targets to apply this technology. In this review, different aspects are highlighted, including the employing of different polymorphs of pristine titanium dioxide as photocatalysts in the photocatalytic processes, also improving the photocatalytic activity of TiO2 by loading different types of metal co-catalysts, especially platinum nanoparticles, and comparing the effect of various loading methods of such metal co-catalysts. Finally, the photocatalytic reforming of aromatic compounds employing TiO2-based semiconductors is presented.

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A combined chemical and biological approach to transforming and mineralizing PAHs in runoff water

Cited by 37 publications

References 49 publications

Use of different kinds of persulfate activation with iron for the remediation of a PAH-contaminated soil

Use of different kinds of persulfate activation with iron for the remediation of a PAH-contaminated soil

Dual Activation of Peroxymonosulfate Using MnFe₂O₄/g-C₃N₄ and Visible Light for the Efficient Degradation of Steroid Hormones: Performance, Mechanisms, and Environmental Impacts

TiO2 Photocatalysis for the Transformation of Aromatic Water Pollutants into Fuels

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A combined chemical and biological approach to transforming and mineralizing PAHs in runoff water

Cited by 37 publications

References 49 publications

Use of different kinds of persulfate activation with iron for the remediation of a PAH-contaminated soil

Use of different kinds of persulfate activation with iron for the remediation of a PAH-contaminated soil

Dual Activation of Peroxymonosulfate Using MnFe2O4/g-C3N4 and Visible Light for the Efficient Degradation of Steroid Hormones: Performance, Mechanisms, and Environmental Impacts

TiO2 Photocatalysis for the Transformation of Aromatic Water Pollutants into Fuels

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Product

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Dual Activation of Peroxymonosulfate Using MnFe₂O₄/g-C₃N₄ and Visible Light for the Efficient Degradation of Steroid Hormones: Performance, Mechanisms, and Environmental Impacts