Degradação de corantes reativos por processo foto-fenton envolvendo o uso de peneira molecular 4A modificada com Fe3+

Ignachewski, Franciély; Fujiwara, Sérgio Toshio; Cótica, L. F.; Carneiro, Lívia Melo; Tauchert, Elias; Peralta‐Zamora, Patricio

doi:10.1590/s0100-40422010000800004

Cited by 11 publications

(4 citation statements)

References 29 publications

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“…The contamination and degradation of the environment by polluting gases, residues from agricultural activities, organic waste, toxic chemical products and other polluting sources has been the subject of debate in today's society (Chen et al, 2020;Khattab et al, 2020;Kishor et al, 2021;Nambela et al, 2020;Sarkar et al, 2017;Ignachewski et al, 2010). These pollutants promote an imbalance in the environment, and have reduced drastically the quality of available drinking water (Kishor et al, 2021;Munagapati et al, 2021;Hynes et al, 2020;Berradi et al, 2019;Sarkar et al, 2017;Ignachewski et al, 2010). Within the industrial sector, textiles are responsible for a large part of the economy of developed and some emerging countries (Haseeb et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of acid yellow dye 17 on activated carbon prepared from Euterpe oleracea: kinetic and thermodynamic studies

Lopes

Santos

Nascimento

et al. 2022

RSD

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Environmental pollution has been a point of discussion in the international community and an object of investigation by research groups, which focus on the development of remediation methods. In the current study, the bunch of açaí (Euterpe oleracea) was used as a precursor for the preparation of low-cost activated carbon in order to remove the dye 17 AY 17 from the aqueous solution. The synthesis was carried out at temperatures of 500, 600 and 700 °C, for 2.0 h in a muffle furnace. The kinetic and thermodynamic mechanism of the adsorption process of the acid yellow dye 17, and the effects of pH, contact time and initial concentration were investigated. Activated carbon carbonized at 700 °C had the highest adsorption capacity, about of 99.9% of removal of the AY. The adsorption capacity of AY 17 was slightly pH dependent with a maximum value at pH 2.0. The kinetic data show that the equilibrium time was 200 min, and the adsorption capacity of activated carbon was 99.9% at 50 mg L‒1 and 67.0% at 150 mg L‒1 of adsorbate, suggesting high adsorption capacity of the material, even in the presence of high dye concentration. The adsorption process of AY 17 is described by the pseudo-second order kinetic model, and the experimental adsorption isotherms are adjusted to the Freundlich model, indicating that the adsorption of AY 17 on activated carbon occurs with the formation of multilayers. The present study shows that this low-cost material has great potential for remediation of textile effluents.

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Section: Introductionmentioning

confidence: 99%

Adsorption of acid yellow dye 17 on activated carbon prepared from Euterpe oleracea: kinetic and thermodynamic studies

Lopes

Santos

Nascimento

et al. 2022

RSD

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“…Dentre elas, destacam-se processos físico-químicos de precipitação-coagulação, tratamento com ozônio, processos oxidativos avançados, utilização de tecnologias de membrana como osmose reversa, microfiltração, ultrafiltração e a adsorção [28][29][30][31].…”

Section: Efluente Têxtilunclassified

Determinação do número de ciclos de reuso do adsorvente cinza de casca de arroz no tratamento de um banho residual de tingimento têxtil

Barcellos¹,

Lima²,

Blosfeld³

2016

Eclet. Quim.

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____________________________________________________________________________Resumo: Este estudo avaliou um sistema de fluxo contínuo utilizando cinzas de casca de arroz como adsorvente para tratamento do banho residual de tingimento têxtil. O sistema consistiu na recirculação do efluente numa bureta contendo o adsorvente. Este procedimento foi realizado em cinco ciclos de reutilização do adsorvente. A Demanda Química de Oxigênio e Cor foram determinadas pela estimativa da eficiência do adsorvente em função do tempo, comparando os ciclos de reuso das águas residuais, antes e depois de tratadas com cinzas. A máxima eficiência obtida foi de 91% no 1º ciclo. No entanto, no ciclo 5, a eficiência do adsorvente foi em torno de 46%. Palavras-chave: adsorção, cinza de casca de arroz, corantes reativos ____________________________________________________________________________Abstract: This study evaluated a continuous flow system using rice husk ash as an adsorbent to treat textile bath dyeing residual. The system consisted in recirculating the effluent in a burette containing the adsorbent. This procedure was performed in five cycles of reuse of the adsorbent. Chemical Oxygen Demand and color were determined by the estimate of the adsorbent's efficiency as a function of time by comparing the cycles of reuse bath dying residual, raw wastewater and wastewater treated with ashes. The maximum efficiency obtained was 91% in the 1 st cycle. However, in the 5 th cycle the efficiency adsorbent was near 46%.

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“…Dentre elas destacam-se processos físico-químicos de precipitação-coagulação, tratamento com ozônio, Processos oxidativos avançados utilização de tecnologias de membrana como osmose reversa, microfiltração, ultrafiltração, e a adsorção [28][29][30][31].…”

Section: Efluente Têxtilunclassified

Determinação do número de ciclos de reuso do adsorvente cinza de casca de arroz no tratamento de um banho residual de tingimento têxtil

Barcellos¹,

Lima²,

Blosfeld³

2015

Eclet. Quim.

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Este estudo avaliou um sistema de fluxo contínuo utilizando cinzas de casca de arroz como adsorvente para tratamento do banho residual de tingimento têxtil. O sistema consistiu na recirculação do efluente numa bureta contendo o adsorvente. Este procedimento foi realizado em cinco ciclos de reutilização do adsorvente. A Demanda Química de Oxigênio e Cor foi determinada pela estimativa da eficiência do adsorvente em função do tempo, comparando os ciclos de reuso das águas residuais, antes e depois de tratadas com cinzas. A máxima eficiência obtida foi de 91% no 1 º ciclo. No entanto, no ciclo 5, a eficiência do adsorvente foi em torno de 46%.Palavras chave: adsorção, cinza de casca de arroz, corantes reativos. ABSTRACTThis study evaluated a continuous flow system using rice husk ash as an adsorbent to treat textile bath dyeing residual. The system consisted in recirculating the effluent in a burette containing the adsorbent. This procedure was performed in five cycles of reuse of the adsorbent. Chemical Oxygen Demand and color were determined by the estimate of the adsorbent's efficiency as a function of time by comparing the cycles of reuse bath dying residual, raw wastewater and wastewater treated with ashes. The maximum efficiency obtained was 91% in the 1 st cycle. However, in the 5 th cycle the efficiency adsorbent was near 46%.

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Degradação de corantes reativos por processo foto-fenton envolvendo o uso de peneira molecular 4A modificada com Fe3+

Cited by 11 publications

References 29 publications

Adsorption of acid yellow dye 17 on activated carbon prepared from Euterpe oleracea: kinetic and thermodynamic studies

Adsorption of acid yellow dye 17 on activated carbon prepared from Euterpe oleracea: kinetic and thermodynamic studies

Determinação do número de ciclos de reuso do adsorvente cinza de casca de arroz no tratamento de um banho residual de tingimento têxtil

Determinação do número de ciclos de reuso do adsorvente cinza de casca de arroz no tratamento de um banho residual de tingimento têxtil

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