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In this work, Chlorococcum sp. was successfully isolated from the rare earth mine effluent. The microalgae was capable of enhancing nitrogen contaminants removal …
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Abstract. This chapter discusses new and multiple uses of rare earth elements (REEs) in modern commercial, industrial and military products and their ecological effects on the aquatic environment, with a particular focus on algae. Their unique physical and chemical properties, global locations and availability are described.
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The mechanism of self-flocculation remains unclear, partially impeding its efficiency enhancement and commercial application of microalgae-based municipal wastewater (MW) bioremediation technology. This study revealed the contributions of exoproteins [PN, proteins in extracellular polymeric substances (EPS)] to the separation …
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Acidic rare earth element tailings (REEs) wastewater with high nitrogen and low COD is the most serious and yet unsolved environmental issue in the rare earth mining industry. The effective and cheap remediation of NH 4 +-N and NO 3 −-N from the REEs wastewater is still a huge challenge.This harsh wastewater environment results in the …
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Towards rare earth element recovery from wastewaters: biosorption using phototrophic organisms. Environmental Biotechnology. Open access. Published: 18 June …
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Go to: Abstract. Biotreatment of acidic rare earth mining wastewater via acidophilic living organisms is a promising approach owing to their high tolerance to high concentrations of …
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Microalgae-bacteria symbiosis system (MBS) appear to be a promising way for treating the rare earth elements (REEs) wastewater due to the natural symbiotic interactions between microalgae and bacteria. Herein, we investigated the effect of different inoculation ratios of microalgae and bacteria incl …
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Microalgae appear to be a promising and ecologically safe way for nutrients removal from rare earth tailings (REEs) wastewater with CO2 fixation and added benefits of resource recovery and recycling.
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The rare earth wastewater was firstly treated using a microalgae-bacteria system. The microalgae-bacteria ratio showed positively correlated with NH 4 + -N removal. High NH 4 + -N removal of 97.46 % was achieved at microalgae/bacteria ratio of 1:3.
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The microalgae-bacteria tandem-type reactor operated stably for 40 days, and the removal rates of NH 4 +-N and P by the ... Successful isolation of a tolerant co-flocculating microalgae towards highly efficient nitrogen removal in harsh rare earth element tailings (REEs) wastewater. Water Res., 166 (2019), Article 115076, …
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The emerging low-carbon and resource-efficient technologies for more and more circular and competitive economy are inconceivable without rare earth elements and platinum group metals (Table 1).The chemical elements combination of rare earth elements, also denoted as "seeds of technology" or "industrial vitamin", are vital to numerous high …
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Microalgae have been regarded as the most promising feedstock for biodiesel production because of its high photosynthetic efficiency, high algal productivity, favorable carbon capture, and strong environmental adaptability. ... (MBS) system for enhanced nitrogen removal from rare earth element tailings (REEs) wastewater: Performance and ...
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For rare earth elements, it was demonstrated that they have an impact on proliferation rate and cell mobility 27,28,29. Metal treatment in Tetrahymena also leads to the expression of ...
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Microalgae appear to be a promising and ecologically safe way for nutrients removal from rare earth tailings (REEs) wastewater with CO 2 fixation and added benefits of resource recovery and recycling. In this study, a pilot scale (50 L) co-flocculating microalgae photobioreactor (Ma-PBR) as constructed and operated for 140 days to treat …
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This chapter discusses new and multiple uses of rare earth elements (REEs) in modern commercial, industrial and military products and their ecological effects on the …
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Abstract. Microalgae-bacteria symbiosis system (MBS) appear to be a promising way for treating the rare earth elements (REEs) wastewater due to the natural symbiotic …
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DOI: 10.1016/j.chemosphere.2023.138265 Corpus ID: 257250094; Buffered loofah supported Microalgae-Bacteria symbiotic (MBS) system for enhanced nitrogen removal from rare earth element tailings (REEs) wastewater: Performance and …
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Rare earth elements (REE) have great demand for sustainable energy and the high-end technology sector. The high similarity of REE owing to the nature of th ... The same can be observed for Nd 3+, where studies have shown that microalgae Ankistrodesmus gracilis and Monoraphidium sp. biosorbed 0.98 and 0.94 mmol/g, …
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In this study, co-flocculating microalgae that can tolerate rare earth tailings wastewater environment was used (Zhang et al., 2019c). It was identified as Chlorococcum robustum AY122332.1. The size of single spherical cell was 19.2 ± 3.9 in length and 17.3 ± 4.6 (N = 10) in width. (Geng et al., 2022).
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Abstract. Rare earth (RE) containing radioactive species and a variety of toxic pollutants The treatment of real wastewater is very important for environmental protection. In this study, a new concept of continuous process consisting of precipitation, adsorption, and oxidation was developed without the use of chemicals.
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Biosorption of metal ions by phototrophic microorganisms is regarded as a sustainable and alternative method for bioremediation and metal recovery. In this study, 12 cyanobacterial strains, including 7 …
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Using microalgae for rare earth elements wastewater treatment has been proved to be effective, however, the technology is challenged by the unstable performances caused by the changeable wastewater qualities and natural conditions. In this study, a corrected response surface methodology was first used to provide an optimized operation …
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In rare earth elements tailing wastewater treatment, Geng et al. achieved Chlorococcum sp. biomass productivity as high as 533 mg/L∙d after addition of 0.5 mg/L sodium carbonate (Na 2 CO 3) . When algae are utilized in biological treatment of wastewater, another factor affecting the process efficiency is the endogenous bacteria …
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Microalgae can simultaneously assimilate the excessive inorganic nitrogen in wastewater and reduce carbon dioxide emission by photosynthesis. The assimilated nitrogen can be further harvested in the form of protein in algae biomass, coupling the low-carbon wastewater treatment and nitrogen recovery (Abeysiriwardana-Arachchige et al., …
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DOI: 10.1016/j.biortech.2022.128304 Corpus ID: 253453726; Enhanced ammonia nitrogen removal from actual rare earth element tailings (REEs) wastewater by microalgae-bacteria symbiosis system (MBS): ratio optimization of microalgae to bacteria and mechanism analysis.
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The US Department of Energy (DOE) Advanced Research Projects Agency - Energy (ARPA-E) announced up to $5 million in funding (DE-FOA-0002784, Topic E) to evaluate the feasibility of extracting rare earth and other high-value trace critical minerals from macroalgae.Seaweeds accumulate trace metals in such an efficient way that this …
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Rare earth elements (REEs) have become increasingly important metals used in modern technology. Processes including mining, oil refining, discarding of obsolete equipment containing REEs, and the use of REE-containing phosphate fertilizers may increase the likelihood of environmental contamination. However, there is a scarcity of …
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Microalgae biomass is a versatile option for a myriad of purposes, as it does not require farmable land for cultivation and due of its high CO2 fixation efficiency during growth. However, biomass harvesting is considered a bottleneck in the process because of its high cost. Magnetic harvesting is a promising method on account of its low cost, high …
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Rare earth element tailings (REEs) wastewater, which has the characteristics of high ammonia nitrogen (NH 4 +-N) and low COD.It can cause eutrophication and biotoxicity in water which is produced in high volumes, requiring treatment before final disposal. Microalgae-Bacteria symbiotic (MBS) system can be applied in REEs …
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A total of 34 elements were determined, including essential and non-essential, toxic and rare earth elements (Table 5 and Table 6). The mineral profile varied greatly with the microalgae species, ... Content of non-essential, toxic and rare earth elements in the studied microalgae species (mg kg −1 dry matter).
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