A step forward on mathematical modeling of barium removal from aqueous solutions using seaweeds as natural cation exchangers: Batch and fixed-bed systems

Fontão, Natália C.; Hackbarth, Fabíola V.; Mayer, Diego A.; Mazur, Luciana P.; Souza, Antônio Augusto Ulson de; Vilar, Vítor J.P.; Souza, Selene M.A. Guelli U. de

doi:10.1016/j.cej.2020.126019

Cited by 11 publications

(7 citation statements)

References 47 publications

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“…So far, several researchers have used HCl as an eluent because of its low price and easy accessibility. 51,52 The desorption performance of the PAN A F–Cl in HCl solution was studied, as shown in Table S7,† and PAN A F–P was soaked in HCl solution under different conditions, such as volume, concentration and time to optimize its optimal desorption conditions. The results exhibited that the desorption efficiency reached its highest value of 95.66% under the conditions of 30 mL of 0.3 mol L −1 HCl for 5 h. As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Zheng

et al. 2022

Environ. Sci.: Water Res. Technol.

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Section: Resultsmentioning

confidence: 99%

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Zheng

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…Similarly, Pelvetia presented a high capacity for the removal of barium, i.e. 69% compared to 56% and 31% in Sargassum cymosum and Gracilaria birdiae, respectively (Fontão et al 2020). The maximal uptake capacity for copper or zinc ions (i.e.…”

Section: Bioremediationmentioning

confidence: 97%

“…These authors point out that there could nevertheless be competitive uptake between Pb and Cu ions. The high biosorption capacity of Pelvetia appears to be associated with a high amount of carboxylic and sulfonic groups present in the biomass surface which bind metals (Vilar et al 2012;Girardi et al 2014;Hackbarth et al 2014;Fontão et al 2020). In this regard, Hackbarth et al (2014) demonstrate a higher uptake capacity for Pb than for Cu ions, due to a higher affinity of lead ions for sulfonic groups.…”

Section: Bioremediationmentioning

confidence: 99%

Concise review of the macroalgal species Pelvetia canaliculata (Linnaeus) Decaisne & Thuret

Lalegerie

Stengel

2022

J Appl Phycol

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Pelvetia canaliculata (L.) Dcne. et Thur. is a marine brown macroalga within the Fucaceae (Fucales, Phaeophyceae, Ochrophyta) and the only species remaining in the monotypic genus Pelvetia. Abundant on sheltered rocky shores of the North-East Atlantic, Pelvetia forms a distinct horizontal band along the upper fringe in the intertidal, between maritime lichens and Fucus spp. Pelvetia canaliculata is a perennial species, characterized by dichotomously branching thalli 10–15 cm in length, forming narrow channels (“channelled wrack”). Distributed on the extreme upper shore, the species is exposed to atmospheric conditions for prolonged periods between spring high tides; photosynthesis recovers quickly, and fully, after water loss. Effective de-epoxidation of the xanthophyll cycle observed in P. canaliculata constitutes an important photoprotective mechanism in this species which receives high doses of solar radiation during tidal emersion. In comparison with other intertidal brown macroalgae, only few studies have investigated its chemical composition. Pelvetia typically presents high levels of sulphated polysaccharides, alginic acid, and polyphenols, associated with antioxidant and other biological activities. It accumulates high levels of mannitol and volemitol, two sugar alcohols considered to be involved in its tolerance to extended emersion. As a natural cation exchanger, Pelvetia biomass displays high biosorption capacities for toxic metals. Besides its slow growth rate and related small quantities of biomass, low protein content coupled with low degradability, have so far limited its potential for valorization.

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“…A solubilidade do elemento é um fator de extrema importância, uma vez que compostos de bário solúveis em água, como o nitrato de bário, acetato de bário, cloreto de bário e hidróxido de bário se tornam nocivos à saúde, enquanto que o sulfato de bário não, por ser insolúvel, podendo até ser utilizado em contrastes radiológicos por exemplo (ATSDR, 2007). A contaminação por bário é uma grande inquietação ambiental e de saúde pública, devido seu contato ser prejudicial à saúde, causando sérios sintomas como: "náuseas, dor abdominal, vômitos e disenteria, até convulsões musculares, problemas cardiovasculares, grave inflamação do trato gastrointestinal e paralisia do sistema nervoso periférico" (Fontão et al, 2020).…”

Section: Bário E Seus Valores Limites Em áGuas E Solounclassified

“…Sendo assim, a procura por métodos de tratamentos eficazes e economicamente viáveis vem sendo estudados para este fim (Fontão, 2020).…”

Section: Bário E Seus Valores Limites Em áGuas E Solounclassified

Técnicas tradicionais e emergentes de remoção de bário para o tratamento de água e efluentes

Graça

Hataishi

Graça

et al. 2022

RSD

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O bário em apenas pequenas concentrações é nocivo à saúde e meio ambiente, tornando-se um desafio para os processos de tratamento de águas e efluentes, devido à sua complexidade de remoção e potencial de contaminação. O objetivo deste trabalho consiste na realização de revisão bibliográfica descrevendo as características físico-químicas do bário, as tecnologias tradicionais e emergentes utilizadas para sua remoção em processos de tratamento de águas e efluentes. Para tanto, a metodologia utilizada foi a revisão sistemática da literatura disponível em quatro bases de dados: Scielo, CAPES, Science Direct e Google Acadêmico. Dentre as técnicas convencionais para o tratamento de metais pesados destacam-se a precipitação química, adsorção, troca iônica, coagulação, floculação e flotação. Em termos de tecnologias emergentes, estão o uso de produtos naturais e sintéticos como adsorventes. Com este trabalho, verificou-se a escassez de metodologias para remoção específica de bário e as perspectivas que se abrem para este campo de pesquisa.

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A step forward on mathematical modeling of barium removal from aqueous solutions using seaweeds as natural cation exchangers: Batch and fixed-bed systems

Cited by 11 publications

References 47 publications

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Efficient capture of phosphate from wastewater by a recyclable ionic liquid functionalized polyacrylonitrile fiber: a typical “release and catch” mechanism

Concise review of the macroalgal species Pelvetia canaliculata (Linnaeus) Decaisne & Thuret

Técnicas tradicionais e emergentes de remoção de bário para o tratamento de água e efluentes

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