Naphthalene degradation in seawater by UV irradiation: The effects of fluence rate, salinity, temperature and initial concentration

Jing, Liang; Chen, Bing; Zhang, Baiyu; Zheng, Jisi; Liu, Bo

doi:10.1016/j.marpolbul.2014.02.003

Cited by 59 publications

(22 citation statements)

References 40 publications

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“…These findings revealed that with decreased initial aflatoxin concentration the degradation rate decreased. In contrast to UV treatment, Jing et al . reported that when naphthalene is treated in seawater by UV irradiation, the average reaction rate constant at high concentration was slightly lower than that at low concentration.…”

Section: Resultsmentioning

confidence: 99%

“…These findings revealed that with decreased initial aflatoxin concentration the degradation rate decreased. In contrast to UV treatment, Jing et al 22 reported that when wileyonlinelibrary.com/jsfa naphthalene is treated in seawater by UV irradiation, the average reaction rate constant at high concentration was slightly lower than that at low concentration. Conversely, Liu et al 18 studied the effect of initial concentration on degradation of AFB 1 in peanut oil using continuous UV irradiation and found that initial concentration was not related to k, which is a feature of first-order reaction kinetics.…”

Section: Effect Of Initial Concentration On Degradation Of Afb 1 and mentioning

confidence: 99%

“…Cooper et al 23 reported that in aqueous medium UV could produce active particles such as hydrated electrons, single-state oxygen, peroxy radical, hydroxyl radical and hydrogen peroxide that promoted the degradation of organisms. Jing et al 22 explained that when the initial concentration of sample was low the number of reactive radicals generated from UV irradiation in water was sufficient to trigger the photoreactions. In contrast, if the initial concentration was much higher, using the same number of radicals may not be sufficient to sustain the reaction at the desired rate.…”

Section: Effect Of Initial Concentration On Degradation Of Afb 1 and mentioning

confidence: 99%

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Degradation kinetics of aflatoxin B₁ and B₂ in solid medium by using pulsed light irradiation

Wang

Mahoney²,

Khir

et al. 2018

J Sci Food Agric

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Section: Resultsmentioning

confidence: 99%

Section: Effect Of Initial Concentration On Degradation Of Afb 1 and mentioning

confidence: 99%

Section: Effect Of Initial Concentration On Degradation Of Afb 1 and mentioning

confidence: 99%

See 1 more Smart Citation

Degradation kinetics of aflatoxin B₁ and B₂ in solid medium by using pulsed light irradiation

Wang

Mahoney²,

Khir

et al. 2018

J Sci Food Agric

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“…The occurrence of aromatics is of great concern because of their high resistance to biodegradation, toxicity to marine biota, and possible carcinogenicity and mutagenicity (Jing et al, 2014). The treatment of OPW is necessary due to the large volumes that are generated during the production of crude oil and, especially, due to the impacts that it causes to the environment when it is improperly discarded.…”

Section: Introductionmentioning

confidence: 99%

“…Phenol was used as a model molecule representing the aromatic fraction of crude oil (aromatic alcohols are highly soluble in water). The use of seawater is justified by considering that the high content of salts is similar to that present in OPW, and, moreover at longer reservoir lifetimes, seawater may predominate the composition of OPW since it is used as fluid of injection into the reservoir (Ray and Engelhardt, 1992;Jing et al, 2014). The other effluent analyzed in this study was a real sample of OPW collected from an oil company located in Rio Grande do Norte, Brazil.…”

Section: Introductionmentioning

confidence: 99%

Oil Produced Water Treatment Using Advanced Oxidative Processes: Heterogeneous-Photocatalysis and Photo-Fenton

et al. 2019

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The Oil Produced Water (OPW) is an effluent produced during the oil extraction process. Owing to its complex composition and toxicity it must be treated by wastewater treatment technologies. However, traditional facilities may be unable to remove all the anthropogenic or naturally occurring compounds. This can result in their discharge to surface water and ultimately affecting the sedimentary environment. The present work shows the application of two Advanced Oxidative Processes (AOPs), Photocatalysis and Photo-Fenton to treat two kinds of effluents: phenolic solution made in seawater, and a real sample of OPW from Rio Grande do Norte, Brazil. Two commercial catalysts were used: TiO2 (for Heterogeneous-Photocatalysis process), and FeSO4.7H2O (for Photo-Fenton process). The catalysts were characterized by X-Ray Diffraction Analysis (XRD), and Diffusive Reflectance Spectroscopy (DRS). In the two AOPs the following parameters were evaluated: initial pH of effluent (acid, neutral and alkaline), presence of H2O2 (0.3%v/v) and time under ultra-violet (UV) irradiation (254nm); aiming to find the suitable conditions for OPW treatment. The results showed an efficiency of 99% for phenol removal, despite the high content of salts present in seawater. In the treatment of the two effluents by the AOPs, the reaction reached chemical equilibrium in 1 h under UV irradiation (254 nm); the best pH to treat the effluents was pH 7, in the presence of H2O2 (0.3%v/v) and by increasing temperature to 75°C (in the case of the real sample of OPW). The results of this work show that the two studied AOPs can be used in the oil industry, for OPW treatment and to treat effluents (with high salinity) contaminated with phenol, to remove organic compounds in order to reduce their toxicity, and consequently assist towards a better quality of the sedimentary environment. The best results were obtained by the Photo-Fenton process. TÍTULO: TRATAMENTO DE ÁGUA PRODUZIDA DE PETRÓLEO USANDO PROCESSOS OXIDATIVOS AVANÇADOS: FOTOCATÁLISE HETEROGÊNEA E FOTO-FENTON RESUMOA Água Produzida por Petróleo (OPW) é um efluente gerado durante o processo de extração de óleo. Devido à sua composição complexa e toxicidade, deve ser tratada por tecnologias de tratamento de águas residuais. No entanto, as instalações tradicionais podem não ser capazes de remover todos os compostos antropogênicos ou de ocorrência natural, podendo resultar na descarga de efluentes contaminados por óleo em águas da superfície e, em última análise, afetar o ambiente sedimentar. O presente trabalho mostra a aplicação de dois Processos Oxidativos Avançados (AOPs), Fotocatálise-Heterogênea e Foto-Fenton para tratar dois tipos de efluentes: solução fenólica em água do mar e uma amostra real de OPW do Rio Grande do Norte, Brasil. Foram utilizados dois catalisadores comerciais: TiO2 (para o processo Fotocatálise Heterogênea) e FeSO4.7H2O (para o processo Foto-Fenton). Os catalisadores foram analisados por Difração de Raios-X (XRD) e Espectroscopia de Reflexão Difusiva (DRS). Nos dois AOPs foram avaliados os seguintes parâmetros: pH inicial do efluente (ácido, neutro e alcalino), presença de H2O2 (0,3% v/v) e tempo sob irradiação ultravioleta (UV) (254nm); com o objetivo de encontrar as condições adequadas para o tratamento de OPW. Os resultados mostraram uma eficiência máxima de 99% na remoção de fenol, apesar do alto teor de sais presentes na água do mar. No tratamento dos dois efluentes pelos AOPs, a reação atingiu o equilíbrio químico em 1 h sob irradiação UV (254 nm); o melhor pH para tratar os efluentes foi pH 7, na presença de H2O2 (0,3% v/v) e aumentando a temperatura para 75 °C (no caso da amostra real de OPW). Os resultados deste trabalho mostram que as duas AOPs estudadas podem ser utilizadas na indústria petrolífera, para tratamento de OPW e para tratar efluentes (com alta salinidade) contaminados com fenol, para remover compostos orgânicos a fim de reduzir a sua toxicidade e, consequentemente, manter a qualidade do ambiente sedimentar. Os melhores resultados foram obtidos pelo processo Foto-Fenton. PALAVRAS-CHAVE: Contaminantes. Tratamento. Água Produzida de Petróleo. Água marinha. Fotocatálise Heterogênea. Foto-Fenton. Processos Oxidativos Avançados (AOPs).

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Relevance of Artificial Intelligence in Wastewater Management

Poornima¹,

Suganya²,

Maheswari³

et al. 2022

The Digital Agricultural Revolution

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Naphthalene degradation in seawater by UV irradiation: The effects of fluence rate, salinity, temperature and initial concentration

Cited by 59 publications

References 40 publications

Degradation kinetics of aflatoxin B₁ and B₂ in solid medium by using pulsed light irradiation

Degradation kinetics of aflatoxin B₁ and B₂ in solid medium by using pulsed light irradiation

Oil Produced Water Treatment Using Advanced Oxidative Processes: Heterogeneous-Photocatalysis and Photo-Fenton

Relevance of Artificial Intelligence in Wastewater Management

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Naphthalene degradation in seawater by UV irradiation: The effects of fluence rate, salinity, temperature and initial concentration

Cited by 59 publications

References 40 publications

Degradation kinetics of aflatoxin B1 and B2 in solid medium by using pulsed light irradiation

Degradation kinetics of aflatoxin B1 and B2 in solid medium by using pulsed light irradiation

Oil Produced Water Treatment Using Advanced Oxidative Processes: Heterogeneous-Photocatalysis and Photo-Fenton

Relevance of Artificial Intelligence in Wastewater Management

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Product

Resources

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Degradation kinetics of aflatoxin B₁ and B₂ in solid medium by using pulsed light irradiation

Degradation kinetics of aflatoxin B₁ and B₂ in solid medium by using pulsed light irradiation