Feasibility Study of a Solar Reactor for Phenol Treatment by the Photo‐Fenton process in Aqueous Solution

Nogueira, K. R. B.; Nascimento, Cláudio Augusto Oller do; Guardani, Roberto; Teixeira, Antônio Carlos Silva Costa

doi:10.1002/ceat.201200269

Cited by 15 publications

(4 citation statements)

References 32 publications

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“…Executing the process at initial pH of 10.2 led to decrease the degradation efficiency to 80 % after 90 min of light irradiation. This result could be due to low rate of decomposition of H 2 O 2 at pH exceeding 4.0 which resulted in a drop of production of hydroxyl radicals (Li et al 2009 dosage effect is close to the reported results in other works with some discrepancies in the dosage values according to the initial concentration of phenol and the reaction conditions (Yavuz et al 2007;Zazo et al 2009;Pontes et al 2010;Nogueira et al 2012).…”

Section: Effect Of Initial Phsupporting

confidence: 87%

“…According to the light sensitivity of the photo-Fenton reaction with respect to the solar spectrum, the utilization of a solar light source is considered to be very economic alternative as compared to UV lamps for treatment of wastewater at a full scale (Nogueira et al 2012;Luna et al 2013). Many researchers reported that compound parabolic collectors (CPC) technology is suitable for application of solar photo-Fenton process (Lafi and Al-Qodah 2006;Vilar et al 2011;Souza et al 2013) because UV light is reflected and intensified towards the solution moving in the reactor tubes (Gar Alalm et al 2014).…”

Section: Introductionmentioning

confidence: 99%

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Investigation of optimum conditions and costs estimation for degradation of phenol by solar photo-Fenton process

Alalm

Tawfik

2014

Appl Water Sci

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In this study, solar photo-Fenton reaction using compound parabolic collectors reactor was assessed for removal of phenol from aqueous solution. The effect of irradiation time, initial concentration, initial pH, and dosage of Fenton reagent were investigated. H 2 O 2 and aromatic intermediates (catechol, benzoquinone, and hydroquinone) were quantified during the reaction to study the pathways of the oxidation process. Complete degradation of phenol was achieved after 45 min of irradiation when the initial concentration was 100 mg/L. However, increasing the initial concentration up to 500 mg/L inhibited the degradation efficiency. The dosage of H 2 O 2 and Fe ?2 significantly affected the degradation efficiency of phenol. The observed optimum pH for the reaction was 3.1. Phenol degradation at different concentration was fitted to the pseudo-first order kinetic according to Langmuir-Hinshelwood model. Costs estimation for a large scale reactor based was performed. The total costs of the best economic condition with maximum degradation of phenol are 2.54 €/ m 3 .

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Section: Effect Of Initial Phsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Investigation of optimum conditions and costs estimation for degradation of phenol by solar photo-Fenton process

Alalm

Tawfik

2014

Appl Water Sci

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“…On the other hand, optimal values are chosen to obtain higher deterioration at lower costs (Ahmad et al 2019;Radwan et al 2019). H 2 O 2 did not influence the breakdown of agrochemical wastewater using photo-Fenton at low concentrations (10-50 mmol/L), while the effects clearly increased at larger concentrations of H 2 O 2 , such as 500 mmol/L (Nogueira et al 2012). Many researchers discovered that increasing the amount of iron salt in the solution increased the rate of contaminant degradation until it reached the optimum dose, after which the rate of degradation decreased (Miralles-Cuevas et al 2021;Soriano-Molina et al 2021c;Vilela et al 2021).…”

Section: Fenton Reagent Dosagementioning

confidence: 99%

Solar photo-oxidation of recalcitrant industrial wastewater: a review

et al. 2022

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Conventional methods to clean wastewater actually lead to incomplete treatments, calling for advanced technologies to degrade recalcitrant pollutants. Herein we review solar photo-oxidation to degrade the recalcitrant contaminants in industrial wastewater, with focus on photocatalysts, reactor design and the photo-Fenton process. We discuss limitations due to low visible-light absorption, catalyst collection and reusability, and production of toxic by-products. Photodegradation of refractory organics by solar light is controlled by pH, photocatalyst composition and bandgap, pollutant properties and concentration, irradiation type and intensity, catalyst loading, and the water matrix.

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“…As reações que envolvem o processo estão listadas abaixo. (Pignatello et al, 2006, Nogueira et al, 2012.…”

Section: Processos Fenton E Foto-fentonunclassified

Estudo Da Degradação Oxidativa De Resíduo De Levedura Empregado Como Biossorvente Para Corante Têxtil

Imamura¹,

Ribeiro²,

Labuto³

2017

Blucher Chemical Engineering Proceedings

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RESUMO -A contaminação de águas por efluentes industriais é uma preocupação mundial sendo a indústria têxtil um dos maiores consumidores e poluidores da água. A biossorção tem sido empregada com sucesso para a remoção célere e eficiente de corantes têxteis de meios aquosos, permitindo a disponibilização rápida da água tratada para reuso. Contudo, após sorção, os materiais biossorventes tem como destino final o aterro sanitário ou a incineração, soluções de custos questionáveis e não ambientalmente amigáveis. O uso exclusivo de processos oxidativos avançados (POA) para o tratamento de efluentes têxteis também tem sido utilizado. Porém, em larga escala, o custo e tempo necessário para a disponibilização da água tratada para reuso e os grandes volumes a serem tratados são limitantes destes processos. A associação da biossorção e POA pode ser um caminho interessante para o tratamento de efluentes têxteis. O presente trabalho empregou processos foto-Fenton para o tratamento de resíduo de biomassa de levedura seca proveniente da indústria sucroalcooleira após sorção de corante têxtil reativo Red-FNR (Cibacrom, Huntusman, EUA). O processo foto-Fenton mostrou-se eficaz para degradação de resíduo sólido de levedura com remoção de 61,2% da massa em 45 minutos. INTRODUÇÃODentre as indústrias mais poluidoras, a têxtil ganha destaque pelo elevado consumo de água e a exposição deste bem de direto da humanidade a uma variedade de substâncias que apresentam características químicas e toxicológicas tão diversas que dificultam o estabelecimento de uma única forma de tratamento para os efluentes gerados (Kant, 2012).Aproximadamente 52% das fibras têxteis são compostas de algodão e a produção destas fibras coloridas contribui bastante para a geração de efluentes pigmentados com corantes reativos, estes apresentam substâncias potencialmente danosas aos seres vivos. Em vista do potencial tóxico dos efluentes têxteis, surgiram normas legais que imputam à indústria têxtil a responsabilidade pelo controle e tratamento de seus efluentes, levando estas à busca de alternativas para minimizar seus impactos.Para atender a legislação a indústria têxtil tem empregado largamente processos envolvendo micro-organismos no tratamento de seus efluentes, utilizando lodo ativado ou micro-organismos biologicamente ativos para a degradação, interconversão, ou acumulação de espécies contaminantes (Sangchul et al., 2005).

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Feasibility Study of a Solar Reactor for Phenol Treatment by the Photo‐Fenton process in Aqueous Solution

Cited by 15 publications

References 32 publications

Investigation of optimum conditions and costs estimation for degradation of phenol by solar photo-Fenton process

Investigation of optimum conditions and costs estimation for degradation of phenol by solar photo-Fenton process

Solar photo-oxidation of recalcitrant industrial wastewater: a review

Estudo Da Degradação Oxidativa De Resíduo De Levedura Empregado Como Biossorvente Para Corante Têxtil

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