Graphene: A new activator of sodium persulfate for the advanced oxidation of parabens in water

Bekris, Leonidas; Frontistis, Zacharias; Trakakis, George; Sygellou, Lamprini; Galiotis, Costas; Mantzavinos, Dionissios

doi:10.1016/j.watres.2017.09.020

Cited by 136 publications

(30 citation statements)

References 40 publications

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“…Matthaiou et al [110] used 1 g/L of SPS and different iron materials as a catalyst for the removal of 0.4 mg/L of PP, achieving the best degradation, 90%, in 90 min. Comparing these studies shows that the presence of catalyst led to almost total removal in general, which shows a good degradation performance when a catalyst material is present, and the study by Bekris et al [109] also presented a poor performance for SPS when used alone, which is the expected behavior. Moreover, these performances were also obtained for different types of catalysts, which may suggest that it is possible to use a wide range of different catalytic materials.…”

Section: Ps Pms and H 2 O 2 Oxidationmentioning

confidence: 75%

“…The presence of a catalyst may also enhance this degradation. Yang et al [108] removed BuP by peroxymonosulfate oxidation with Mn-Fe oxycarbide catalyst, achieving the highest removal of 99% on 180 min, while Bekris et al [109] used graphene-based catalysts with PS to remove 1 mg/L of PP, achieving 95% degradation for the best catalyst in 20 min. Moreover, the use of SPS alone was tested, reaching 10% degradation in 120 min, which shows the poor performance of this agent when used alone.…”

Section: Ps Pms and H 2 O 2 Oxidationmentioning

confidence: 99%

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Paraben Compounds—Part II: An Overview of Advanced Oxidation Processes for Their Degradation

2021

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Water scarcity represents a problem for billions of people and is expected to get worse in the future. To guarantee people’s water needs, the use of “first-hand water” or the reuse of wastewater must be done. Wastewater treatment and reuse are favorable for this purpose, since first-hand water is scarce and the economic needs for the exploration of this type of water are increasing. In wastewater treatment, it is important to remove contaminants of emerging concern, as well as pathogenic agents. Parabens are used in daily products as preservatives and are detected in different water sources. These compounds are related to different human health problems due to their endocrine-disrupting behavior, as well as several problems in animals. Thus, their removal from water streams is essential to achieve safe reusable water. Advanced Oxidation Processes (AOPs) are considered very promising technologies for wastewater treatment and can be used as alternatives or as complements of the conventional wastewater treatments that are inefficient in the removal of such contaminants. Different AOP technologies such as ozonation, catalytic ozonation, photocatalytic ozonation, Fenton’s, and photocatalysis, among others, have already been used for parabens abatement. This manuscript critically overviews several AOP technologies used in parabens abatement. These treatments were evaluated in terms of ecotoxicological assessment since the resulting by-products of parabens abatement can be more toxic than the parent compounds. The economic aspect was also analyzed to evaluate and compare the considered technologies.

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Section: Ps Pms and H 2 O 2 Oxidationmentioning

confidence: 75%

Section: Ps Pms and H 2 O 2 Oxidationmentioning

confidence: 99%

Paraben Compounds—Part II: An Overview of Advanced Oxidation Processes for Their Degradation

2021

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“…On the other hand, a pH of 3.0 could increase the production of less reactive species such as HSO 4 − , which consequently decreases the degradation of organic pollutants in the aqueous solution . As reported by Liang et al ., the sulfate radical concentration would be at the highest level because of the lower activation energy of SO 4 •− at around neutral pH.…”

Section: Resultsmentioning

confidence: 92%

“…As shown in Figs B, 4D and 4F, the MeP degradation rate increased substantially when the NM‐SCM loading increased from 0.1 to 0.3 g L −1 . This phenomenon can be elucidated by three major reasons: (i) it is clear that the implication of higher quantities of catalyst leads to increases in the decomposition rate of SPS through the occurrence of additional redox‐active centers (Fe 3 O 4 ); (ii) increases in NM‐SCM loading lead to the availability of more catalytic active sites for the adsorption and oxidation of organic pollutant (Eqns (7) and (8)), contributing to increased SPS catalysis into SO 4 •− radicals; (iii) the results clearly showed that this reaction mostly occurred on the catalyst surface, so increases in catalyst surface area provide more activated sites for catalytic oxidation. Therefore it can be concluded that increases in NM‐SCM loading can enhance persulfate activation, which can consequently lead to further degradation and mineralization of MeP.…”

Section: Resultsmentioning

confidence: 99%

Heterogeneous catalytic degradation of methylparaben using persulfate activated by natural magnetite; optimization and modeling by response surface methodology

Rostamifasih

Pasalari

Mohammadi

et al. 2019

J of Chemical Tech & Biotech

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BACKGROUND In this study, a naturally magnetic semiconductor mineral (NM‐SCM) was used as a highly active, easily separable and green catalyst to activate persulfate (SPS) for the degradation of methylparaben (MeP) in aqueous solution by a heterogeneous catalyst system (SPS/NM‐SCM). NM‐SCM properties were characterized using field emission scanning electron microscope (FESEM), Brunauer–Emmett–Teller (BET), X‐ray diffraction (XRD), energy‐dispersive X‐ray (EDX) and vibrating sample magnetometer (VSM) analyses. The effects of contributing factors such as solution pH, NM‐SCM loading, SPS dosage and initial MeP concentration on MeP degradation were analyzed using response surface methodology (RSM) and Box–Behnken design (BBD). RESULTS The RSM model obtained from the present study (R2 > 0.99) showed a suitable correlation between the predicted values and experimental results of MeP degradation. Under optimized conditions (pH 6.5, SPS 5 mmol L−1, NM‐SCM 0.3 g L−1 and MeP 10 µmol L−1), a removal efficiency of 99.5% and a mineralization degree of 37% were achieved. The removal efficiency of MeP was reduced in the presence of inorganic ions as follows: chloride > nitrate > carbonate > phosphate. After five successive catalyst reuses, the degradation efficiency was >90%, indicating the excellent potential reusability of NM‐SCM catalyst. CONCLUSION Owing to the generation of highly reactive oxidizing species (SO4•−) and easy separation of the catalyst, the integration of NM‐SCM and SPS has great potential for the degradation of MeP from water and wastewater matrices. © 2019 Society of Chemical Industry

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“…Bekris et al (2017) studied the performance of graphene nano-powder as activator of sodium persulfate for the advanced oxidation of propylparaben in water. The setting of parameters was as follows: catalyst loading of 75 mg/L~1 g/L, sodium persulfate (SPS) concentration of 10 mg/L ~ 1 g/L, initial solution pH of 3~9 and initial paraben concentration of 0.5~5 mg/L).…”

mentioning

confidence: 99%

Emerging Pollutants ‐ Part II: Treatment

Liu

Zhang

Chang

2018

Water Environment Research

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Emerging pollutants (EPs) are a class of chemical pollutants that have potential or substantial threats to human health and ecological environment. EPs mainly include pharmaceuticals and personal care products, endocrine disrupting chemicals, antibiotics, persistent organic pollutants, disinfection by-products and other industrial chemicals, etc. In recent years, with the improvement of environmental analysis level, these substances have been detected frequently in urban sewage, surface water and drinking water all over the world. The continuous detection of EPs brings new challenges to water pollution control, and also makes EPs treatment an international research hotspot. This paper summarizes some research results on emerging pollutants treatment published in 2017.

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Graphene: A new activator of sodium persulfate for the advanced oxidation of parabens in water

Cited by 136 publications

References 40 publications

Paraben Compounds—Part II: An Overview of Advanced Oxidation Processes for Their Degradation

Paraben Compounds—Part II: An Overview of Advanced Oxidation Processes for Their Degradation

Heterogeneous catalytic degradation of methylparaben using persulfate activated by natural magnetite; optimization and modeling by response surface methodology

Emerging Pollutants ‐ Part II: Treatment

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