Kinetic model describing the UV/H2O2 photodegradation of phenol from water

Rubio-Clemente, Ainhoa; Chica, Edwin; Peñuela, A Gustavo

doi:10.2298/ciceq161119008r

Cited by 6 publications

(3 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It is well known that UV irradiation of H 2 O 2 in aqueous solutions leads to the production of • OH radicals. [18][19][20] These radicals react with the substrate to form intermediates that further react with • OH radicals to complete mineralization (indirect photolysis). 21 According to the literature, systematic studies of stability and reactivity of HCTZ in environmental water (Danube river, and Danube-Tisa-Danube canal (DTD), from Novi Sad, Republic of Serbia), tap water, and ultrapure water (UPW) under SSI and UV were not performed.…”

Section: Introductionmentioning

confidence: 99%

Removal of hydrochlorothiazide from drinking and environmental water: Hydrolysis, direct and indirect photolysis

Savanović

Čonić

Kladar

et al. 2022

Energy & Environment

View full text Add to dashboard Cite

Diuretic hydrochlorothiazide (HCTZ) has been detected in drinking and environmental water. Since HCTZ exhibited some toxic effects on the environment, it is essential to propose safe and economical ways of its removal. The influence of water quality on the removal efficiency of HCTZ from the environment was observed. The stability of HCTZ was investigated in ultrapure (UPW), tap, and two different environmental waters, by hydrolysis, photolysis, and indirect photolysis under simulated solar irradiation (SSI) and UV irradiation. Also, experiments were conducted at temperatures of (5 ± 1) °C and (25 ± 1) °C, in the dark. Comprehensive experimental and computational analysis was performed to examine the stability and reactivity. The results show that HCTZ is susceptible to hydrolysis. Photolysis and indirect photolysis were efficient under UV irradiation, wherein HCTZ was entirely degraded after 180 min of irradiation in UPW. Chloride ions, carbonates, calcium, and magnesium ions present in natural waters inhibited the degradation of HCTZ. This diuretic has significant interaction with •OH radicals. A 4-amino-6-chlorobenzene-1,3- disulfonamide (ABSA) was observed as a stable degradation product, and ABSA formation's degradation mechanism was proposed. Mineralization of HCTZ was above 50% in H2O2/UV system in UPW after 180 min of irradiation.

show abstract

Section: Introductionmentioning

confidence: 99%

Removal of hydrochlorothiazide from drinking and environmental water: Hydrolysis, direct and indirect photolysis

Savanović

Čonić

Kladar

et al. 2022

Energy & Environment

View full text Add to dashboard Cite

show abstract

“…No entanto, essa abordagem é bastante genérica em relação à complexidade dos mecanismos reacionais químicos e fotoquímicos envolvidos. Modelos matemáticos mais sistemáticos têm sido propostos para determinar com maior rigor as variáveis cinéticas do processo UV/H2O2 e compreender melhor a interação entre as diversas espécies presentes no meio estudado (LIAO e GUROL, 1995;CRITTENDEN et al, 1999;EDALATMANESH et al, 2007;SONG et al, 2008;CHANG et al, 2010;RUBIO-CLEMENTE et al, 2017).…”

Section: Modelagem Cinética Do Processo Uv/h2o2unclassified

“…utilizam o valor da constante cinética de segunda ordem k7 proposto inicialmente por Buxton et al (1988) (LIAO e GUROL, 1995CRITTENDEN, 1999;EDALATMANESH et al, 2007;SONG et al, 2008;CHANG et al, 2010;WOLS et al, 2014;RUBIO-CLEMENTE et al, 2017). Os valores das constantes cinéticas de segunda ordem para 36 fármacos, determinados por Wols et al (2014) situaram-se na faixa de 0,63 a 16 × 10 9 L mol -1 s -1 e numa média de 7,6 × 10 9 L mol -1 s -1 .…”

Section: Constantes De Segunda Ordem (L Mol -1 S -1 )unclassified

Degradação do antibiótico bacitracina zíncica em meio aquoso através de processos oxidativos avançados.

Metolina¹

View full text Add to dashboard Cite

Agradeço a Deus, minha fonte de fé, por me ajudar a concretizar mais uma fase de aprendizado, logo após o segundo título de bacharel. Agradeço por dar-me forças para superar todas as dificuldades. Ao meu orientador Prof. Dr. Antonio Carlos Silva Costa Teixeira, pela oportunidade da pesquisa, orientação e ensinamentos. A dedicação, a competência e a qualidade em que exerce suas atividades acadêmicas e de pesquisa revela uma vocação extremamente admirável e inspiradora. Ao Prof. Dr. Felipe Lourenço Rebello por me receber em seu laboratório na Faculdade de Ciências Farmacêuticas-USP. Agradeço pelo apoio, ensinamentos e amizade para a condução dos ensaios biológicos. A Profa. Dra. Sueli Ivone Borrely do IPEN-USP pelas importantes instruções nos ensaios de toxicidade. Aos professores Dr. Roberto Guardani e Dr. Reinaldo Giudici, pelas valiosas contribuições ao meu trabalho. As sugestões e discussões realizadas durante a qualificação melhoraram consideravelmente a qualidade dos meus resultados. A todos os professores do Departamento de Engenharia Química da Poli-USP, que contribuíram com conhecimentos importantes para o meu aprendizado na pós-graduação, os quais também foram utilizados na minha pesquisa.

show abstract

Evaluation of the UV/H2O2 system for treating natural water with a mixture of anthracene and benzo[a]pyrene at ultra-trace levels

Rubio-Clemente

Chica

Peñuela

2018

Environ Sci Pollut Res

View full text Add to dashboard Cite

The presence of polycyclic aromatic hydrocarbons, such as anthracene (AN) and benzo[a]pyrene (BaP), in water has become a problem of great concern due to the detrimental health effects caused to humans and living beings. In this work, the efficiency of the UV/HO system for degrading the target compounds at ultra-trace levels in surface water has been evaluated. For this purpose, a previous optimization step using a face-centered central composite experimental design has been conducted, considering the effect of the UV-C irradiance and the initial concentration of HO. It was evidenced that under optimal operating conditions (11 mg L HO and 0.63 mW cm irradiance), AN and BaP removal percentages were higher than 99.8%. Additionally, 69.3% of the organic matter, in terms of total organic carbon, was mineralized without the production of transformation by-products more harmful than the parent compounds. These findings demonstrate the oxidation capacity of the examined system in a natural matrix for degrading micropollutants that cannot be converted through conventional treatment processes. Consequently, new horizons are opened for the effective use of the UV/HO system for drinking water production, providing the accomplishment of other regulated parameters related to water quality.

show abstract

Kinetic model describing the UV/H2O2 photodegradation of phenol from water

Cited by 6 publications

References 22 publications

Removal of hydrochlorothiazide from drinking and environmental water: Hydrolysis, direct and indirect photolysis

Removal of hydrochlorothiazide from drinking and environmental water: Hydrolysis, direct and indirect photolysis

Degradação do antibiótico bacitracina zíncica em meio aquoso através de processos oxidativos avançados.

Evaluation of the UV/H2O2 system for treating natural water with a mixture of anthracene and benzo[a]pyrene at ultra-trace levels

Contact Info

Product

Resources

About

Kinetic model describing the UV/H2O2 photodegradation of phenol from water

Cited by 6 publications

References 22 publications

Removal of hydrochlorothiazide from drinking and environmental water: Hydrolysis, direct and indirect photolysis

Removal of hydrochlorothiazide from drinking and environmental water: Hydrolysis, direct and indirect photolysis

Degradação do antibiótico bacitracina zí­ncica em meio aquoso através de processos oxidativos avançados.

Evaluation of the UV/H2O2 system for treating natural water with a mixture of anthracene and benzo[a]pyrene at ultra-trace levels

Contact Info

Product

Resources

About

Degradação do antibiótico bacitracina zíncica em meio aquoso através de processos oxidativos avançados.