Biosorption of reactive blue 5G dye onto drying orange bagasse in batch system: Kinetic and equilibrium modeling

Fiorentin, Leila Denise; Trigueros, Daniela Estelita Góes; Módenes, Aparecido Nivaldo; Espinoza‐Quiñones, Fernando Rodolfo; Pereira, Nehemias Curvelo; Barros, Sueli Teresa Davantel de; Santos, Onélia Aparecida Andreo dos

doi:10.1016/j.cej.2010.07.043

Cited by 134 publications

(73 citation statements)

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“…Estas isotermas representam uma relação de equilíbrio entre a concentração de corante na fase líquida e a quantidade de corante com uma massa biossorvente para uma temperatura específica. A isoterma é muito importante para estimar a máxima capacidade de adsorção e afinidade entre adsorbato e adsorvente, além de outros parâmetros físicos (Fiorentin et al, 2010). Para estudo do equilíbrio, os dados experimentais foram ajustados pelos modelos de isotermas de Langmuir e Freundlich.…”

Section: Parâmetros De Equilíbrio De Adsorçãounclassified

Aproveitamento Da Macrófita Salvinia Sp. E Do Palito De Erva-Mate Como Materiais Adsorventes De Corante

Santos¹,

Módenes²,

Oliveira³

et al. 2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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RESUMO -O objetivo deste trabalho foi investigar a remoção do corante azul de metileno utilizando a macrófita Salvinia sp. e o palito de erva-mate. Para cada biossorvente estudado foram realizados o estudo da cinética de adsorção e do equilíbrio de adsorção a partir de experimentos em sistema batelada, misturando 0,5 g de biomassa em 50 mL de solução de corante com pH 5, temperatura controlada em 30 °C e agitação de 100 rpm. O tempo de equilíbrio para ambos biossorventes foi de 120 minutos. O modelo cinético de pseudo-primeira ordem descreveu melhor a biossorção utilizando a Salvinia sp. (R 2 0,988), enquanto que o modelo de pseudo-segunda ordem ajustou-se melhor para o palito de erva-mate (R 2 = 0,985). Os dados de equilíbrio foram modelados pelas isotermas de Langmuir e de Freundlich, obtendo-se uma capacidade máxima de adsorção de 175,5 e 11,9 mg g -1 para a Salvinia sp. e palito de erva-mate, respectivamente.

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Section: Parâmetros De Equilíbrio De Adsorçãounclassified

Aproveitamento Da Macrófita Salvinia Sp. E Do Palito De Erva-Mate Como Materiais Adsorventes De Corante

Santos¹,

Módenes²,

Oliveira³

et al. 2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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“…La bioadsorción, surge como una alternativa que llama la atención en la remoción de iones de metales pesados en los efluentes industriales, ya que, es una tecnología que permite no solo removerlos, si no también, darle un tratamiento a los desechos agrícolas que antes no tenían ninguna utilidad, además, estos materiales biosorbentes son de bajo costo y fácil adquisición [16], [17].…”

Section: Introductionunclassified

Adsorción de metales pesados en aguas residuales usando materiales de origen biológico

Tejada-Tovar

Garcés-Jaraba

2015

TecnoL.

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Adsorción de metales pesados en aguas residuales usando materiales de origen biológicoAdsorption of heavy metals in waste water using biological materialsCandelaria Tejada-Tovar 1 , Ángel Villabona-Ortiz 2 y Luz Garcés-Jaraba 3Recibido: 10 de junio de 2014, Aceptado: 26 de octubre de 2014Cómo citar / How to cite C. Tejada-Tovar, A. Villabona-Ortiz y L. Garcés-Jaraba, "Adsorción de metales pesados en aguas residuales usando materiales de origen biológico", Tecno Lógicas, vol. 18, no. 34, pp. 109-123, 2015 ResumenLa bioadsorción es un proceso que permite la captación activa o pasiva de iones metálicos, debido a la propiedad que diversas biomasas vivas o muertas poseen para enlazar y acumular este tipo de contaminantes por diferentes mecanismos. La aplicación de materiales de bajo costo obtenidos a partir de diferentes biomasas provenientes de la flora microbiana, algas y residuos agroindustriales ha sido investigada para reemplazar el uso de métodos convencionales en la remoción de contaminantes, tales como los metales pesados. Entre los metales de mayor impacto al ambiente por su alta toxicidad y difícil eliminación se encuentran el cromo, níquel, cadmio, plomo y mercurio. En el presente trabajo se estudian las generalidades de la adsorción como proceso alternativo para la remoción de contaminantes en solución y las biomasas comúnmente usadas en estos procesos, además de algunas de las modificaciones realizadas para la mejora de la eficiencia de adsorción de las mismas. Se concluye que el uso de la adsorción en la remoción de contaminantes en solución acuosa mediante el uso de biomasa residual es aplicable a estos procesos de descontaminación evitando problemas subsecuentes como la generación de lodos químicos, y generando un uso alternativo a materiales considerados como desechos. Se identifica además que factores como el pH de la solución, tamaño de partícula, temperatura y la concentración del metal influyen en el proceso. Palabras claveAdsorción, biosorbentes, efluentes, ion metálico, residual. AbstractBiosorption is a process that allows active or passive uptake of metal ions due to the property that different living or dead biomass have to bind and accumulate these pollutants by different mechanisms. The application of low-cost materials obtained from different biomass from microbial flora, agro-industrial waste and algae has been investigated to replace the use of conventional methods for the removal of contaminants such as heavy metals. Some of the metals of greatest impact to the environment due to its high toxicity and difficult to remove are chromium, nickel, cadmium, lead, and mercury. In this paper, an overview of adsorption as an alternative process for the removal of contaminants in solution and biomass commonly used in these processes, as well as some of the modifications made to improve the efficiency of adsorption of these materials is presented. It was concluded that the use of adsorption in the removal of pollutants in aqueous solution using waste biomass is applicable to these decontaminatio...

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“…Other more economical materials have been studied for the adsorption of SD from synthetic wastewaters, replacing the AC. For example, they are represented by clay materials (bentonite, kaolinite), siliceous materials (zeolites, alunite, perlite), and industrial waste products (i.e., waste carbon slurries, metal hydroxide sludge, coffee wastes) [28][29][30][31][32]. The unavailability of such materials with the desired specifications can be an obstacle detaining its utilization.…”

Section: Adsorbent Resourcesmentioning

confidence: 99%

Low-cost Adsorbents Derived from Agricultural By-products/Wastes for Enhancing Contaminant Uptakes from Wastewater: A Review

Sulyman

Namieśnik

Gierak

2017

Pol. J. Environ. Stud.

201

112

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A major threat to the comfort of human life has been imposed by increased industrialization and urbanization. The generation and disposal of huge amounts of toxic materials and pollutants have heavily contaminated our environment. Some Organics such as synthetic dyes (SD) and heavy metals (HM) are becoming increasingly prevalent as the most dangerous pollutants in soil and surface water environments. They are causing great concern worldwide due to their toxicity to many life forms.Environmentally friendly utilization of agricultural by-products/waste materials either as raw materials or in production of so-called activated carbons (AC) is an important issue. Because it is apparent from our literature review that the main factors characterizing these materials are their affordability, local availability, and efficiencies in removing many unwanted toxics and pollutants, they therefore could be utilized instead of more conventional but expensive adsorbent materials, particularly in developing countries where many industries lack appropriate individual sewage treatment systems; even where they exist, they lack satisfactory functioning and maintenance because of the lack of good budgets.A number of case studies are supplied in this review. These case studies have pointed to the efficient removal of SD/HM ions from aqueous solutions by the agricultural by-products/wastes in the form of a raw material, signifying spent tea leaves (STL) as a good example. Besides, the efficient removal of such ions by AC produced from these agricultural by-products/wastes has also been given in detail, suggesting a variety of AC agricultural by-products/wastes sources. Both kinds are widely used adsorbents in the treatment of wastewaters. Our review has shown that these adsorbents are characterized by many exceptional physical and chemical features that make them widely used adsorbents in the treatment of wastewaters. The adsorption efficiencies by these substances were also affected by the characteristics of AC, which depend on the physical and chemical properties of the precursor (i.e., agricultural by-products/wastes) as well as on the activation method applied, which is either chemical or physical. The structural properties of the resulting

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Biosorption of reactive blue 5G dye onto drying orange bagasse in batch system: Kinetic and equilibrium modeling

Cited by 134 publications

References 34 publications

Aproveitamento Da Macrófita Salvinia Sp. E Do Palito De Erva-Mate Como Materiais Adsorventes De Corante

Aproveitamento Da Macrófita Salvinia Sp. E Do Palito De Erva-Mate Como Materiais Adsorventes De Corante

Adsorción de metales pesados en aguas residuales usando materiales de origen biológico

Low-cost Adsorbents Derived from Agricultural By-products/Wastes for Enhancing Contaminant Uptakes from Wastewater: A Review

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