Uptake of radionuclides by a common reed (Phragmites australis (Cav.) Trin. ex Steud.) grown in the vicinity of the former uranium mine at Žirovski vrh

Černe, Marko; Smodiš, Borut; Štrok, Marko

doi:10.1016/j.nucengdes.2010.04.003

Cited by 45 publications

(12 citation statements)

References 24 publications

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“…A fitorremediação tem sido aplicada na remoção de poluentes orgânicos e inorgânicos, como: metais tóxicos (Hall, 2002;Wong, 2003;Morikawa & Erkin, 2003;Kautsky & Greger, 2003), solventes clorados (Kulakow & Pidlisnyuk, 2010), (Santos & Rodella, 2007;Kadian et al, 2008;; hidrocarbonetos de petróleo (Siciliano et al, 2003;Kaimi, 2006;Aguiar et al, 2007) bifenilas policloradas (van Aken et al, 2010); TNT (Rylott & Bruce, 2009) e radionuclídeos (Cerne et al, 2010). No Brasil, as pesquisas sobre fitorremediação têm focalizado principalmente em solos contaminados por metais (Melo et al, 2006;Almeida et al, 2007;Romeiro et al, 2007;Alves et al, 2008;Wolff et al, 2009) e por herbicidas (Pires et al, 2003Santos et al, 2004;Procópio et al, 2005Procópio et al, , 2007Procópio et al, , 2008Belo et al, 2007;.…”

Section: Potencial De Aplicação E Limitações De Natureza Técnicaunclassified

Desafios técnicos e barreiras sociais,econômicas e regulatórias na fitorremediação de solos contaminados

Marques

Aguiar

Silva

2011

Rev. Bras. Ciênc. Solo

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(4) RESUMO A fitorremediação -uso de plantas e comunidades microbianas associadas à rizosfera para degradar, isolar ou imobilizar contaminantes do solo e água -é uma técnica de custo relativamente baixo, vantagens estéticas e que não gera impactos adicionais. A maioria dos estudos com plantas na recuperação de áreas contaminadas tem sido desenvolvida em países de clima temperado, onde o potencial da fitorremediação é limitado por fatores climáticos. No Brasil, o conhecimento acerca do potencial fitorremediador das várias espécies de plantas e comunidades microbianas em solos tropicais é ainda muito escasso, o que, associado à falta de instrumentos de aferição e de apoio à decisão, dificulta a recomendação por parte das agências ambientais e empresas. A presente revisão descreve brevemente os mecanismos de fitorremediação e discute aspectos sociais, econômicos e reguladores que representam entraves ao amplo desenvolvimento da técnica, em comparação com técnicas convencionais, mais conhecidas e aceitas pelas agências e empresas. Finalmente, o mercado brasileiro presente e futuro é discutido, sendo sugerida a criação de protocolos experimentais e instrumentos de apoio à decisão que estimulem a aplicação da fitorremediação nos casos em que ela se apresente como a opção mais adequada.Termos de indexação: árvore de decisão, bioaumento, biorremediação, contaminantes orgânicos, metais tóxicos.(1) Recebido para publicação em fevereiro de 2010 e aprovado em outubro de 2010.(2) Professor Adjunto,

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Section: Potencial De Aplicação E Limitações De Natureza Técnicaunclassified

Desafios técnicos e barreiras sociais,econômicas e regulatórias na fitorremediação de solos contaminados

Marques

Aguiar

Silva

2011

Rev. Bras. Ciênc. Solo

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“…In contrast, Kochenov et al (1965) established that plant debris contained 50% to 66% of the total U found in the peat [5]. Investigating common reeds growing in a pond of U contaminated seepage water near an uranium mill tailings deposit in the Czech Republic, Cerne et al (2010) found that reeds may accumulate 238 U in roots and leaves by up to >300 times above the natural U level in the plant (some 2 µg/kg dry weight). Leaves and stems of 20 analyzed plants (Phragmites australis) displayed an average U concentration of 691 and 192 µg U/kg dry weight respectively [54].…”

Section: +mentioning

confidence: 99%

“…Investigating common reeds growing in a pond of U contaminated seepage water near an uranium mill tailings deposit in the Czech Republic, Cerne et al (2010) found that reeds may accumulate 238 U in roots and leaves by up to >300 times above the natural U level in the plant (some 2 µg/kg dry weight). Leaves and stems of 20 analyzed plants (Phragmites australis) displayed an average U concentration of 691 and 192 µg U/kg dry weight respectively [54]. With an observed reed density in South African peatlands of approximately 50 plants per m 2 and an average dry weight of 177 g/plant (n = 3) (own measurements) the reeds would contain approximately 2-6 mg U per m 2 .…”

Section: +mentioning

confidence: 99%

“…The latter includes uranyl complexes formed with anions such as chlorides (Cl ) and hydrogencarbonates (HCO 3 − ) [54]. The ability of the sulfate and carbonate ions to form stable uranyl complexes is frequently used in commercially leaching uranium from milled ore and illustrates the relatively high U-mobilization potential of these ions.…”

Section: Formation Of Soluble Inorganic and Organic Complexesmentioning

confidence: 99%

“…For ore of mainly carbonatic lithology the slower carbonate leaching is frequently used since the high buffer potential of carbonates renders the use of sulphuric acid uneconomical [61,62]. Francis et al (1999) successfully used a carbonate-hydrogencarbonate extraction as well as citric acid to remove U from contaminated soil and found carbonates to be particularly selective for U [54]. Since all of the abovementioned ions are contained in commonly used products such as gypsum (SO [20].…”

Section: Formation Of Soluble Inorganic and Organic Complexesmentioning

confidence: 99%

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Peatlands as Filters for Polluted Mine Water?—A Case Study from an Uranium-Contaminated Karst System in South Africa—Part II: Examples from Literature and a Conceptual Filter Model

Winde

2011

Water

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Abstract:As the second part of a series of four, this paper reviews a number of case studies of natural uranium attenuation in peat, as well as underlying chemical mechanisms reported in literature. Based on this review, a generic, conceptual, model for peat to act as filter for dissolved uranium (U) is developed for guiding subsequent field investigations. The model consists of a chemical and an hydraulic component which is derived largely from data reported in literature as well as from limited field observations. For the chemical model component 10 different processes, each controlled by factors relating to water chemistry, have been identified to govern the attenuation of U in peat via a net balance of immobilization and remobilization. For the hydraulic aspect of the filter model, five different principal modes of U polluted water coming in contact with peat are discussed, focusing on the associated peat-water contact time as a crucial parameter controlling chemical U attenuation. Moreover, links between the two model components are discussed and, based on the integrated conceptual model, possible effects of natural and anthropogenic events on U attenuation in peatlands are outlined. Guided by the model, various site-specific field and laboratory investigations are finally designed to verify how far the identified generic factors and processes are indeed applicable to the Gerhard Minnebron Peatland.

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Making light work of heavy metal contamination: the potential for coupling bioremediation with bioenergy production

Raikova

Piccini

Surman

et al. 2019

J of Chemical Tech & Biotech

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Intense anthropogenic activity continues to expose the natural environment to heavy metal contamination. Whilst a number of physical and chemical solutions for remediation exist, the use of higher plants and algae for clean‐up of contaminated landscapes, termed ‘phytoremediation’ and ‘phycoremediation’, respectively, offer an attractive and sustainable alternative. However, these remediation processes will always lead to a high‐moisture, heavy metal‐contaminated biomass, which must be further processed to partition, or render inert, the metal contaminants. Conversion of this metal‐rich biomass into second‐generation biofuels offers a useful route to subsidise the economics of remediation activities. Here we briefly review the various methods for bioremediation of heavy metals, and discuss the potential to produce bioenergy from these biomass sources. Coupling the bioremediation activity to bioenergy production gives far‐reaching social and economic benefits; however, established processes such as direct combustion and anaerobic digestion risk releasing heavy metals back into the environment. Alternatively, thermochemical conversions such as pyrolysis or hydrothermal liquefaction (HTL) offer significant advantages in terms of the segregation of metals into a relatively inert and compact solid phase while producing a biocrude oil for bioenergy production. In addition, preliminary work suggests that the HTL process can also be used to partition essential macronutrients, such as N, P and K, into an aqueous medium, allowing additional nutrient recycling. © 2019 Society of Chemical Industry

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Uptake of radionuclides by a common reed (Phragmites australis (Cav.) Trin. ex Steud.) grown in the vicinity of the former uranium mine at Žirovski vrh

Cited by 45 publications

References 24 publications

Desafios técnicos e barreiras sociais,econômicas e regulatórias na fitorremediação de solos contaminados

Desafios técnicos e barreiras sociais,econômicas e regulatórias na fitorremediação de solos contaminados

Peatlands as Filters for Polluted Mine Water?—A Case Study from an Uranium-Contaminated Karst System in South Africa—Part II: Examples from Literature and a Conceptual Filter Model

Making light work of heavy metal contamination: the potential for coupling bioremediation with bioenergy production

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