Cadmium removal by Anabaena sp. ATCC 33047 immobilized in polyurethane foam

Clares, Marta E.; Guerrero, Miguel G.; García-González, Mercedes

doi:10.1007/s13762-014-0743-4

Cited by 14 publications

(5 citation statements)

References 24 publications

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“…Cadmium is a common kind of heavy metal that is most harmful to environment and human health (Clares et al 2015). Cd 2?…”

Section: Heavy Metal Biosorption Of S Cerevisiae-agnpsmentioning

confidence: 99%

In situ formation of AgNPs on S. cerevisiae surface as bionanocomposites for bacteria killing and heavy metal removal

Chen

et al. 2017

Int. J. Environ. Sci. Technol.

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Novel bionanocomposites, S. cerevisiae-AgNPs, were synthesized by in situ formation of AgNPs on S. cerevisiae surface using fulvic acids as reductants under simulated sunlight. S. cerevisiae-AgNPs were characterized using UV-Vis spectroscopy, scanning electron microscope, transmission electron microscope and Fourier transform infrared spectroscopy. These analyses showed that AgNPs were distributed on the surface of S. cerevisiae. The application of S. cerevisiae-AgNPs in bacteria killing and heavy metal removal was studied. S. cerevisiae-AgNPs effectively inhibited the growth of E. coli with increasing concentrations of S. cerevisiae-AgNPs. E. coli was killed completely at high concentration S. cerevisiae-AgNPs (e.g., 100 or 200 lg mL-1). S. cerevisiae-AgNPs as excellent heavy metal absorbents also have been studied. Using Cd 2? as model heavy metal, batch experiments confirmed that the adsorption behavior fitted the Langmuir adsorption isotherms and the Cd 2? adsorption capacity of S. cerevisiae-AgNPs was 15.01 mg g-1. According to adsorption data, the kinetics of Cd 2? uptake by S. cerevisiae-AgNPs followed pseudo second-order kinetic model. Moreover, S. cerevisiae-AgNPs possessed ability of different heavy metals' removal (e.g., Cr 5? , As 5? , Pb 2? , Cu 2? , Mn 2? , Zn 2? , Hg 2? , Ni 2?). The simulated contaminated water containing E. coli, Cd 2? and Pb 2? was treated using S. cerevisiae-AgNPs. The results indicated that the bionanocomposites can be used to develop antibacterial agents and bioremediation agents for water treatment.

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“…Cadmium is a common kind of heavy metal that is most harmful to environment and human health (Clares et al 2015). Cd 2?…”

Section: Heavy Metal Biosorption Of S Cerevisiae-agnpsmentioning

confidence: 99%

In situ formation of AgNPs on S. cerevisiae surface as bionanocomposites for bacteria killing and heavy metal removal

Chen

et al. 2017

Int. J. Environ. Sci. Technol.

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“…Increased synthesis of some pigments can be related to manifestation of mechanisms of adaptation to lead among cyanobacteria (El-Sheekh et al, 2005;Kiran et al, 2008). Some of them can be manifested in transformation of heavy metal ions into less toxic particles due to phycobilin pigments (Bekasova et al, 2002;Andrade et al, 2004;Clares et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Influence of lead salts on some morphological and physiological parameters of filamentous cyanobacteria

Galperina

Сопрунова

2018

Biosys. divers.

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In the conditions of a model laboratory experiment the influence of lead salts (an acetate and nitrate) on morphological and physiological parameters of filamentous cyanobacteria was studied. During the experiment we estimated features of formation of biomass, structure of trichomes, form and the size of cells, content of chlorophyll a, carotenoids and phycobiliproteins. It is noted that in the presence of lead acetate of up to 5 maximum allowable concentrations there is a formation of a biomass in the form of attached and free films, and presence of a nitrate form of lead at the same concentration promotes formation of filaments, fixed from one side. At the same time, the increase of concentration of both acetate, and nitrate forms of lead promotes formation of rarefied films of one layer multidirectional trichomes; to disintegration of trichomes on the fragments and separate cells united by an external mucilaginous envelope. Content of lead acetate in concentration of 15 times the maximum allowable concentration, and lead nitrate at 10 times the maximum allowable concentration leads to formation of abnormally long cells up to 10.0–10.5 µm long. It is established that lead acetate has a stimulating effect on formation of a biomass and synthesis of photosynthetic pigments. The biomass growth of up to 223.7% of the control was observed at concentration up to 15 times the maximum allowable concentration inclusive. The content of chlorophyll a grew by 30.6%, carotenoids – by 24.0% at one maximum allowable concentration. Lead nitrate stimulates a biomass gain much more weakly – up to 70.0% at 5 times the maximum allowable concentration and also has the expressed inhibiting effect on synthesis of photosynthetic pigments. Depression of concentration of chlorophyll a and carotenoids by 38.8% and 79.4% respectively was observed already at one maximum allowable concentration. The stimulating effect of lead acetate is noted on synthesis of phycocyanin (by 94.0%) and allophycocyanin (by 120.0%) in concentration up to 5 times the maximum allowable concentration; the stimulating effect of lead nitrate was observed on synthesis of phycocyanin (by 64.7%) in concentration up to 5 times the maximum allowable concentration and on synthesis of allophycocyanin (up to 140.0%) and on phycoerythrin (up to 228.0%) at concentration up to 10 times the maximum allowable concentration. Comparison of influence of various lead salts on filamentous cyanobacteria revealed a more expressed inhibiting effect of the nitrate form of lead in comparison with acetate.

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“…ATCC 33047, which was immobilized into polyurethane foam. The outcomes indicated that cadmium removal from wastewater was a quick process, fitting better to Langmuir model, while maximum adsorption capacity reached 162 mg Cd(II) per gram dry biomass [23].…”

Section: Polyurethane Adsorption Studiesmentioning

confidence: 95%

“…According to the computed values of ΔG 0 , ΔH 0 , and ΔS 0 at various temperatures, the adsorption was an endothermic, spontaneous process [18]. Clares et al (2015) investigated cadmium removal by Anabaena sp. ATCC 33047, which was immobilized into polyurethane foam.…”

Section: Polyurethane Adsorption Studiesmentioning

confidence: 99%

The Interaction of Two Emerging Pollutants, Radionuclides and Microplastics: In-Depth Thermodynamic Studies in Water, Seawater, and Wastewater

Ioannidis,

Kinigopoulou,

Anastopoulos

et al. 2024

Preprint

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Microplastics and radionuclides pose significant challenges to the sustainable management of water systems. The interaction of uranium-232 and americium-241 with polyurethane (PU) and polylactic acid (PLA) microplastics has been investigated in aqueous laboratory and environ-mental solutions (e.g., seawater and wastewater) as a function of temperature in various pH (4, 7, 9). The temperature increase affects positively the binding of uranium-232 and americium-241. The highest adsorption efficiency for uranium and americium is observed at the neutral and al-kaline pH region, respectively. In environmental water samples (pH ~8) the adsorption efficiency decreases significantly due to the competitive adsorption of other metals present in natural wa-ters (e.g., Ca2+) as well as the stabilization of the actinides (particularly uranium) in solution (e.g., UO2(CO3)34-). The solution composition which governs both the actinide speciation, and the type of surface-active sites is strongly associated with the surface adsorption thermodynamics and de-termines the values of the associated parameters (ΔΗo and ΔSo). Generally, the values of ΔΗo and ΔSo are positive indicating an entropy-driven reaction. However, in the case of the U(VI) adsorp-tion by PLA in seawater samples both ΔΗo and ΔSo values become negative suggesting an enthal-py-driven binding mechanism associated with a decline in randomness at the surface upon ad-sorption.

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Cadmium removal by Anabaena sp. ATCC 33047 immobilized in polyurethane foam

Cited by 14 publications

References 24 publications

In situ formation of AgNPs on S. cerevisiae surface as bionanocomposites for bacteria killing and heavy metal removal

In situ formation of AgNPs on S. cerevisiae surface as bionanocomposites for bacteria killing and heavy metal removal

Influence of lead salts on some morphological and physiological parameters of filamentous cyanobacteria

The Interaction of Two Emerging Pollutants, Radionuclides and Microplastics: In-Depth Thermodynamic Studies in Water, Seawater, and Wastewater

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