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Abstract(s)
Introdução: A Acacia dealbata foi explorada como biosorvente para remover cefalosporina de soluções aquosas. Este estudo procura demonstrar a viabilidade de utilizar materiais lenhocelulósicos de baixo custona remoção de poluentes, valorizando resíduos de outras indústrias e reduzindo o impacto ambiental associado. Objetivo: O objetivo pretendeu avaliar a capacidade dos resíduos de acácia em adsorver a cefalosporina, analisando o seu potencial de adsorção e os modelos cinéticos envolvidos, de forma a explorar o seu uso no tratamento de águas. Métodos: Esta revisão foi conduzida utilizando uma abordagem sistemática para identificar, analisar e sintetizar a literatura relevante sobre a presença e o impacto dos antibióticos cefalosporínicos em ambientes aquáticos. Paralelamente, foram realizados testes de adsorção utilizando soluções de cefalosporina com concentração de 15 mg L⁻¹, variando o tempo de agitação entre 10 e 120 minutos. A cinética de adsorção foi avaliada com base nos modelos de pseudo-primeira ordem, pseudo-segunda ordem, Elovich e difusão intrapartícula. A adsorção foi analisada através de espectrometria UV-Vis, onde se identificou um pico de absorção característico a 240 nm. Resultados: Os resultados indicaram que o modelo de pseudo-primeira ordem apresentou o coeficiente de determinação mais elevado (R² = 0,991), sugerindo que o mecanismo predominante é a adsorção física. Esta análise confirmou a capacidade da acácia em adsorver cefalosporinas, evidenciando o seu potencial como biosorvente. Conclusão: Este estudo sublinha a relevância dos biosorventes, como a Acacia dealbata, no tratamento de poluentes da indústria farmacêutica. A utilização de materiais sustentáveis oferece uma solução promissora para o tratamento de águas, abrindo caminho para futuras aplicações no campo da biossorção.
Introduction: Acacia dealbata was explored as a biosorbent to remove cephalosporin from aqueous solutions. This study intends to demonstrate the feasibility of using lignocellulosic low-cost materials in the removal of pollutants, valorizing waste from other industries, and reducing the associated environmental impact. Objective: The aim of this study was to evaluate the capacity of acacia residues to adsorb cephalosporin, analyze its adsorption potential, and examine the kinetic models involved in order to explore its use in water treatment. Methods: This review was conducted using a systematic approach to identify, analyze, and synthesize the relevant literature on the presence and impact of cephalosporin antibiotics in aquatic environments. In parallel, adsorption tests were performed using cephalosporin solutions with a concentration of 15 mg L⁻¹, varying the stirring time between 10 and 120 minutes. The adsorption kinetics were evaluated based on the pseudo-first order, pseudo-second order, Elovich, and intraparticle diffusion models. The adsorption was analyzed by UV-Vis spectrometry, where a characteristic absorption peak at 240 nm was identified. Results: The results indicated that the pseudo-first order model presented the highest coefficient of determination (R² = 0.991), suggesting that the predominant mechanism is physical adsorption. This analysis confirmed the ability of acacia to adsorb cephalosporins, evidencing its potential as a biosorbent. Conclusion: This study highlights the relevance of biosorbents, such as Acacia dealbata, in the treatment of pollutants from the pharmaceutical industry. The use of sustainable materials offers a promising solution for water treatment, paving the way for future applications in the field of biosorption.
Introduction: Acacia dealbata was explored as a biosorbent to remove cephalosporin from aqueous solutions. This study intends to demonstrate the feasibility of using lignocellulosic low-cost materials in the removal of pollutants, valorizing waste from other industries, and reducing the associated environmental impact. Objective: The aim of this study was to evaluate the capacity of acacia residues to adsorb cephalosporin, analyze its adsorption potential, and examine the kinetic models involved in order to explore its use in water treatment. Methods: This review was conducted using a systematic approach to identify, analyze, and synthesize the relevant literature on the presence and impact of cephalosporin antibiotics in aquatic environments. In parallel, adsorption tests were performed using cephalosporin solutions with a concentration of 15 mg L⁻¹, varying the stirring time between 10 and 120 minutes. The adsorption kinetics were evaluated based on the pseudo-first order, pseudo-second order, Elovich, and intraparticle diffusion models. The adsorption was analyzed by UV-Vis spectrometry, where a characteristic absorption peak at 240 nm was identified. Results: The results indicated that the pseudo-first order model presented the highest coefficient of determination (R² = 0.991), suggesting that the predominant mechanism is physical adsorption. This analysis confirmed the ability of acacia to adsorb cephalosporins, evidencing its potential as a biosorbent. Conclusion: This study highlights the relevance of biosorbents, such as Acacia dealbata, in the treatment of pollutants from the pharmaceutical industry. The use of sustainable materials offers a promising solution for water treatment, paving the way for future applications in the field of biosorption.