Fixed bed biosorption of silver and investigation of functional groups on acidified biosorbent from algae biomass

Freitas, Geovani Rocha de; Vieira, Melissa Gurgel Adeodato; Silva, Meuris Gurgel Carlos da

doi:10.1007/s11356-019-06731-5

Cited by 18 publications

(8 citation statements)

References 54 publications

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“…Taking this into account, factors such as pH, temperature (thermodynamic studies), contact time, shaking speed, initial concentration of the pollutant or amount of biosorbent are well known and are evaluated to optimize the biosorption process [23]. However, there are other less studied factors that have an impact on the process-for example, the type and amount of functional groups in the biomass such as carboxyl, amino, phosphoryl or sulfonate and that influence the biosorption of some pollutants (mainly metals) [9,31,39], ionic strength [40], presence of dissolved organic matter that alters the absorption of metals [41] or the competition with other pollutants [40,42,43]. When using a living system, it is necessary to consider other factors such as the response to the possible toxicity of the pollutant [44,45].…”

Section: Biosorption: Generalitiesmentioning

confidence: 99%

“…It is evident that the nature of the biosorbent determines many of its physico-chemical properties, such as the type and quantity of functional groups, but there are other aspects that are also especially relevant in the process, such as surface area (increasing the surface area increases the contact of the sorbate with the sorbent), porosity (mesoporosity increases the biosorption capacity, while microporosity decreases it) or cell structures (different structures have different physico-chemical characteristics) [39,46,47]. The characterization of the material in terms of its morphology and composition are common in biosorption studies because they allow a more detailed description and provide information on the sorption mechanisms.…”

Section: Biosorption: Generalitiesmentioning

confidence: 99%

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Biosorption: A Review of the Latest Advances

Torres

2020

Processes

129

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Biosorption is a variant of sorption techniques in which the sorbent is a material of biological origin. This technique is considered to be low cost and environmentally friendly, and it can be used to remove pollutants from aqueous solutions. The objective of this review is to report on the most significant recent works and most recent advances that have occurred in the last couple of years (2019–2020) in the field of biosorption. Biosorption of metals and organic compounds (dyes, antibiotics and other emerging contaminants) is considered in this review. In addition, the use and possibilities of different forms of biomass (live or dead, modified or immobilized) are also considered.

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Section: Biosorption: Generalitiesmentioning

confidence: 99%

Section: Biosorption: Generalitiesmentioning

confidence: 99%

Biosorption: A Review of the Latest Advances

Torres

2020

Processes

129

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“…Porosity, calculated using Equation 24, also showed a decrease in its value, being an indication of the possible filling of empty pores. However, as pointed out by Freitas et al (2019), this low variation indicates that aluminum has no influence on the pore filling of the biosorbent.…”

Section: Simplified Batch Designmentioning

confidence: 84%

Application of alginate extraction residue for Al(III) ions biosorption: a complete batch system evaluation

Costa

Silva

Vieira

2021

Environ Sci Pollut Res

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The residue derived from the alginate extraction from S. filipendula was applied for the biosorption of aluminum from aqueous medium. The adsorptive capacity of the residue (RES) was completely evaluated in batch mode. The effect of pH, contact time, initial concentration and temperature was assessed through kinetic, equilibrium and thermodynamic studies. The biosorbent was characterized prior and post-Al biosorption by N2 physisorption, Hg porosimetry, He picnometry and thermogravimetry analyses.Equilibrium was achieved in 60 minutes. Kinetics obeys pseudo-second order model at aluminum higher concentrations. Isotherms followed Freundlich model at low temperature (293.15 K) and D-R or Langmuir model at higher temperatures (303 and 313 K). Data modeling indicated the occurrence of both chemical and physical interactions in the aluminum adsorption mechanism using RES. The maximum adsorption capacity obtained was of 1.431 mmol/g at 293 K. The biosorption showed a spontaneous, favorable and exotherm character. A simplified batch design was performed, indicating that the residue is a viable biosorbent, achieving high percentages of removal using low biomass dosage.

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“…As vantagens do processo são a operação simples, sem a necessidade de inserção de nutrientes ao meio e possibilidade de regeneração do biossorvente [37][38][39]. Dessa forma, vários métodos vêm sendo desenvolvidos baseados na biossorção demonstrando uma efetividade nos resultados, um processo economicamente viável e uma aceitabilidade ambiental [40][41][42][43].…”

Section: Biossorção E Dessorção De Metais E Compostos Orgânicosunclassified

Biossorção: uma revisão sobre métodos alternativos promissores no tratamento de águas residuais

Ribas

Silva

2022

Matéria (Rio J.)

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RESUMO Métodos convencionais de tratamento de águas residuais apresentam determinadas limitações, como a baixa remoção de poluentes orgânicos refratários, necessidade de grandes áreas de instalação e os elevados custos para implementação e operação. Assim, processos alternativos vêm sendo aplicados para o tratamento de água residuais, como a adsorção, pela sua versatilidade e a possibilidade de utilização de materiais alternativos (biossorventes). O processo de biossorção é considerado uma alternativa biotecnológica para o tratamento de águas residuais, por meio da utilização dos biossorventes, como resíduos agroindustriais. Neste contexto, o presente trabalho tem como objetivo apresentar uma revisão bibliográfica de caráter exploratória e qualitativa, relacionando a aplicação do processo de biossorção na remoção de contaminantes em águas residuais. Assim, a maioria das biomassas vivas e mortas demonstraram ótimos resultados na captação de poluentes em meio aquoso, sendo promissoras no tratamento de águas residuais industriais. Além disso, resíduos agroindustriais que se acumulam por não apresentarem o correto gerenciamento, também foram testados para metais pesados e em sua maioria tiveram bom desempenho de capacidade biossortiva. A biomassa de natureza microbial apresentou menores valores de capacidade adsortiva para a remoção de poluentes, já que foi necessário o controle de nutrientes e das variáveis necessárias à sobrevivência das células. É importante destacar a maior complexidade de remoção dos compostos orgânicos, visto que apresentam em suas estruturas química grupos funcionais específico de natureza iônica diferente, dificultando a interação entre biossorvente e poluente orgânico. Por conseguinte, foi possível identificar a versatilidade do processo de biossorção, bem como a possibilidade de utilização de materiais alternativos.

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Fixed bed biosorption of silver and investigation of functional groups on acidified biosorbent from algae biomass

Cited by 18 publications

References 54 publications

Biosorption: A Review of the Latest Advances

Biosorption: A Review of the Latest Advances

Application of alginate extraction residue for Al(III) ions biosorption: a complete batch system evaluation

Biossorção: uma revisão sobre métodos alternativos promissores no tratamento de águas residuais

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