Innovative treatment of industrial effluents through combining ferric iron and attapulgite application.
Chemosphere
; 358: 142132, 2024 Jun.
Article
em En
| MEDLINE
| ID: mdl-38670505
ABSTRACT
The escalation of industrial activities has escalated the production of pharmaceutical and dyeing effluents, raising significant environmental issues. In this investigation, a hybrid approach of Fenton-like reactions and adsorption was used for deep treatment of these effluents, focusing on effects of variables like hydrogen peroxide concentration, catalyst type, pH, reaction duration, temperature, and adsorbent quantity on treatment effectiveness, and the efficacy of acid-modified attapulgite (AMATP) and ferric iron (Fe(III))-loaded AMATP (Fe(III)-AMATP) was examined. Optimal operational conditions were determined, and the possibility of reusing the catalysts was explored. Employing Fe3O4 as a heterogeneous catalyst and AMATP for adsorption, CODCr was reduced by 78.38-79.14%, total nitrogen by 71.53-77.43%, and phosphorus by 97.74-98.10% in pharmaceutical effluents. Similarly, for dyeing effluents, Fe(III)-AMATP achieved 79.87-80.94% CODCr, 68.59-70.93% total nitrogen, and 79.31-83.33% phosphorus reduction. Regeneration experiments revealed that Fe3O4 maintained 59.48% efficiency over three cycles, and Fe(III)-AMATP maintained 62.47% efficiency over four cycles. This work offers an economical, hybrid approach for effective pharmaceutical and dyeing effluent treatment, with broad application potential.
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Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
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Compostos Férricos
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Eliminação de Resíduos Líquidos
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Compostos de Silício
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Compostos de Magnésio
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Peróxido de Hidrogênio
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Resíduos Industriais
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article