Bioremediation of effluent from a uranium mill tailings repository in South China by Azolla–Anabaena

Xinwei, Huang; Wang, Yongdong; Hu, Nan; Sha, Yin-hua; Ding, Dexin

doi:10.1007/s10967-018-5934-x

Cited by 7 publications

(9 citation statements)

References 22 publications

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“…was shown to be able reduce U(VI) and stabilize uranium waste [81]. The presence of uranium tolerant species makes the microbiome (and whole plant) also very attractive in purification of aquifers with radionuclides as demonstrated recently by Xinwei and co-workers [23] or earlier by Sela and Tel-Or [24].…”

Section: Plos Onementioning

confidence: 91%

“…Among hyperaccumulators effective in heavy metal removal by phytoremediation [19] is the aquatic fern Azolla filiculoides L. (Salviniaceae), which possess a recently recognized endophytic microbiome [20,21] composed of interesting microorganisms with PGPB potential [21]. The plant was tested in numerous studies for the potential of the removal many metals among which Pb, Cd, Cr, Ni, Ag and Au are often studied [19,[22][23][24][25]. However, the tolerance of A. filiculoides to heavy metals such as Pb, Cd, Cr, Ni, Ag and Au and possible role in assisted phytoremediation remains unknown.…”

Section: Introductionmentioning

confidence: 99%

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Azolla filiculoides L. as a source of metal-tolerant microorganisms

et al. 2020

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The metal hyperaccumulator Azolla filiculoides is accompanied by a microbiome potentially supporting plant during exposition to heavy metals. We hypothesized that the microbiome exposition to selected heavy metals will reveal metal tolerant strains. We used Next Generation Sequencing technique to identify possible metal tolerant strains isolated from the metaltreated plant (Pb, Cd, Cr(VI), Ni, Au, Ag). The main dominants were Cyanobacteria and Proteobacteria constituting together more than 97% of all reads. Metal treatment led to changes in the composition of the microbiome and showed significantly higher richness in the Pb-, Cd-and Cr-treated plant in comparison with other (95-105 versus 36-44). In these treatments the share of subdominant Actinobacteria (0.4-0.8%), Firmicutes (0.5-0.9%) and Bacteroidetes (0.2-0.9%) were higher than in non-treated plant (respectively: 0.02, 0.2 and 0.001%) and Ni-, Au-and Ag-treatments (respectively: <0.4%, <0.2% and up to 0.2%). The exception was Au-treatment displaying the abundance 1.86% of Bacteroidetes. In addition, possible metal tolerant genera, namely: Acinetobacter,

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Section: Plos Onementioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Azolla filiculoides L. as a source of metal-tolerant microorganisms

et al. 2020

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“…This nitrogen provides the necessary nutrients to bio‐fertilizer for sustainable agriculture 18 . Azolla is suitable for the accumulation of heavy and organic metal pollutants, 19–21 and also bioremediation 22,23 . Lipids, pH, ash, microalgae components and carbohydrates (starch, cellulose, and hemicellulose) are the main constituents of Azolla although it does not contain any lignin, as discussed above and also as shown in Table 1 24,26,29,30,32 .…”

Section: Biofuel From Aquatic Plantsmentioning

confidence: 95%

A review of biofuel production from floating aquatic plants: an emerging source of bio‐renewable energy

Arefin

Rashid

Islam

2021

Biofuels Bioprod Bioref

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Aquatic plants have been considered as a cause for concern because they impede aquatic flora and fauna. However, biofuel production from aquatic plants is an emerging energy source. As a consequence, this paper presents a detailed review of bio‐fuel production from floating aquatic plants with their physicochemical properties. The main focus of this study is to evaluate the biofuel production potential of some major aquatic plants. This paper also presents some methods for biofuel production from aquatic plants that are feasible for future energy generation. Five major types of floating aquatic plants are analyzed in this study, viz. Azolla, water hyacinth, water fern, water lettuce, and duckweed, with their related biofuel production methodologies such as transesterification, pyrolysis, hydrolysis, and torrefaction. This paper also evaluates optimum bio‐fuel production conditions for aquatic plants and their upgradation methodologies. Conventional fuel and aquatic bio‐fuel properties are also compared in this study. Findings suggest that, depending on calorific value and viscosity, Azolla and water fern (Salvania molesta) are better aquatic plants to generate high‐quality (similar to diesel) biofuels compared with other aquatic plants. Bio‐fuel production from water fern, water lettuce, and duckweed are also comparatively less focused sources of energy. The cost associated with cleaning invasive aquatic plants from water can be turned into an investment by producing biofuel from aquatic plants using sustainable techniques. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd

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“…Furthermore, long-time uranium exposure will cause severe damage to the normal functioning of some organs (e.g., heart, liver, and kidney) and the nervous system. 25 − 27…”

Section: Introductionmentioning

confidence: 99%

“…Although the environmental hazards posed by the U tailings have attracted more attention, the old reservoir way is still maintained in some stockpiling regions due to the blurred responsibilities and the shortage of funds. − Therefore, the radionuclides and some coexisting heavy metals (HMs) contained in the tailings can be potentially migrated into groundwater from the surface by heavy rains and carried great distances by strong winds, finally entering the biological terminals through the food chain and threatening the ecosystem operations. − The residents can be exposed to uranium and its radioactive daughters by ingesting contaminated food and water and even by inhaling sand dust in the air. Furthermore, long-time uranium exposure will cause severe damage to the normal functioning of some organs (e.g., heart, liver, and kidney) and the nervous system. − …”

Section: Introductionmentioning

confidence: 99%