Unconventional advanced oxidation technique: Evaporation liquid rate and phenolic compounds degradation evaluation and modelling/optimization process with CFD, RSM and ANNs

Brandão, Yana Batista; Dias, F. F.; Oliveira, Dinaldo Cavalcanti; Zaidan, Léa Elias Mendes Carneiro; Teodosio, Jailson R.; Oliveira, Julierme Gomes Correia de; Benachour, Mohand

doi:10.1016/j.fuel.2021.120967

Cited by 3 publications

(4 citation statements)

References 27 publications

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“…The same DiCTT gave similar results (maximum phenol degradation of 100% and TOC conversion > 30%) in the treatment of the same contaminants under different operating conditions, namely natural gas flow rate of 2-4 m 3 h −1 , air excess of 10-50%, and recycling rate of the combustion gases of 0-100% [35].…”

Section: Discussionmentioning

confidence: 54%

“…The results obtained in this work showed greater degradation of pcresol (almost 100%) and TOC conversion (almost 64%) compared for example with that of Teodosio et al [29], who used the same reactor to treat hydroquinone. Comparison can also be made with the research of Brandão et al [35], who applied an unconventional advanced oxidation process (AOP), called Direct Contact Thermal Treatment (DiCTT), able to oxidize phenolic compounds using natural gas as an energy source. Almost complete phenol degradation (>99%) and TOC conversion (>30%) for a given evaporation rate to the liquid phase (<11%) and effluent temperature (70-78 • C) were obtained under optimal conditions.…”

Section: Discussionmentioning

confidence: 99%

“…However, data reported in the literature show that its greatest efficiency occurs when it is used in a combined way, such as a H 2 O 2 /UV or H 2 O 2 /catalyst [32,33]. These methods have been effective in oxidative systems, according to the wastewater to be treated, because of the chemical reactions that take place during the decomposition of organic pollutants [34,35]. AOPs have also been used after pre-magnetization to treat refractory effluents, due to the effectiveness of radicals (•OH and •SO 4 − ) in degrading recalcitrant organic compounds into others with lower toxicity potential [36].…”

Section: Introductionmentioning

confidence: 99%

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Treatment of Effluent Containing p-Cresol through an Advanced Oxidation Process in a Batch Reactor: Kinetic Optimization

et al. 2023

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The present research is related to the study of p-cresol oxidation reaction in aqueous phase. Firstly, the conventional advanced oxidation process (AOP) in a lab-scale batch reactor was used, seeking to identify the most impacting process variables and then to propose an optimization approach for ensuring the complete p-cresol degradation and the highest total organic carbon (TOC) conversion. In the AOP with the use of hydrogen peroxide as the oxidizing agent, the oxidation reaction was optimized with the aid of a factorial design, and a maximum TOC conversion of 63% was obtained. The Lumped Kinetic Model (LKM) was used to describe the profile of residual TOC concentration due to chemical species, which were categorized into two groups (refractory and non-refractory compounds). The model was able to satisfactorily describe the profile of the residual fractions of these two classes of organic compounds and allowed estimating the related kinetic constants (k) at two different temperatures, namely (a) 3.19 × 10−1 and 2.82 × 10−3 min−1 for non-refractory and refractory compounds at 80 °C and (b) 4.73 × 10−1 and 5.09 × 10−3 min−1 for the same compound classes at 90 °C, while the activation energy (Ea) of the process was 42.02 and 62.09 kJ mol−1, respectively. The kinetic modeling of organic pollutants oxidation in liquid effluents would allow to perform in situ seawater treatment on vertical reactors installed in offshore platforms and to properly release treated water into the oceans. In this way, ocean contamination caused by the exploration on offshore platforms of oil and natural gas, the main energy sources and vectors in the current world, may be remarkably reduced, thus favoring a more eco-friendly energy production.

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Section: Discussionmentioning

confidence: 54%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Treatment of Effluent Containing p-Cresol through an Advanced Oxidation Process in a Batch Reactor: Kinetic Optimization

et al. 2023

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“…Os POAs têm sido empregados já por algum tempo como uma tecnologia alternativa para tratar várias matrizes ambientais. A grande vantagem desses processos está em sua natureza destrutiva (MERT et al, 2010;KIM;IHM, 2011;ZHANG et al, 2016;MATAFONOVA;BATOEV, 2018;BRANDÃO et al, 2021). O Brasil, assim como outros países ainda em desenvolvimento, mostra em dados reportados na literatura um maior déficit, quando se refere ao tratamento de águas residuais, de acordo com o "Diagnóstico dos serviços de água e esgoto".…”

Section: Introductionunclassified

Toxicidade nas Sementes da Lactuca Sativa (alface) por Amostras de Efluentes de Esgoto Doméstico Coletadas no Recife-PE com Análise Físico-Química e Microbiológica

Melo¹,

Moraes²,

Oliveira³

et al. 2021

CONJ

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O objetivo desta proposta de pesquisa é analisar amostras de efluentes de esgoto doméstico coletado mensalmente e durante um ano, em alguns condomínios da Região Metropolitana do Recife‒PE, onde foram realizadas as análises físico-química e microbiológica. Testes de toxicidade foram também realizados nas sementes da Lactuca sativa (alface) nesses efluentes a partir de um planejamento fatorial experimental completo (23) com dois níveis e três fatores. Assim, foram coletados dois litros de cada referida amostra para realizar as análises de DQO, (Demanda Química de Oxigênio), DBO (Demanda Biológica de Oxigênio), Temperatura, OG (Óleos e Graxas), pH (potencial Hidrogeniônico), SD60 (Sólidos Sedimentáveis), Coliformes: Totais e Termotolerantes; seguindo a Resolução 430º/2011 do CONAMA (Conselho Nacional de Meio Ambiente) e a metodologia APHA para realizar os estudos. Os resultados da pesquisa comprovam o cumprimento da legislação CONAMA em relação aos valores das análises obtidas, onde a maior parte das amostras apresentaram resultados satisfatórios. Nos ensaios de toxicidade, as amostras na saída do esgoto doméstico coletadas tiveram 16,6% de IG (Índice de Germinação) < 80% e 69,4% de IG > 120%, o que indica a presença de substâncias que estimulam a germinação das sementes de alface.

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CFD and RSM Assist in Reducing the LPG Consumption of Burners for Agarwood Oil Production in Thailand

Chimchom,

Matthujak,

Sriveerakul

et al. 2024

Combustion Science and Technology

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Unconventional advanced oxidation technique: Evaporation liquid rate and phenolic compounds degradation evaluation and modelling/optimization process with CFD, RSM and ANNs

Cited by 3 publications

References 27 publications

Treatment of Effluent Containing p-Cresol through an Advanced Oxidation Process in a Batch Reactor: Kinetic Optimization

Treatment of Effluent Containing p-Cresol through an Advanced Oxidation Process in a Batch Reactor: Kinetic Optimization

Toxicidade nas Sementes da Lactuca Sativa (alface) por Amostras de Efluentes de Esgoto Doméstico Coletadas no Recife-PE com Análise Físico-Química e Microbiológica

CFD and RSM Assist in Reducing the LPG Consumption of Burners for Agarwood Oil Production in Thailand

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