Silver and Gold Ions Recovery from Batch Systems Using <i>Spirulina platensis</i> Biomass

Cepoi, Liliana; Zinicovscaia, Inga; Chiriac, Tatiana; Rudi, Ludmila; Yushin, Nikita; Vera, Miscu

doi:10.1515/eces-2019-0029

Cited by 8 publications

(7 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most of these polymers are characterized by an anionic nature, owing to the presence of uronic acids and/or of other charged groups [ 13 ]. As a result, polysaccharides typically have very high affinity to metallic ions and can be considered as a very promising chelating agents for the removal of heavy metals from water [ 14 – 18 ].…”

Section: Introductionmentioning

confidence: 99%

Metal removal capability of two cyanobacterial species in autotrophic and mixotrophic mode of nutrition

et al. 2022

View full text Add to dashboard Cite

Background Cyanobacteria are ecologically significant prokaryotes that can be found in heavy metals contaminated environments. As their photosynthetic machinery imposes high demands for metals, homeostasis of these micronutrients has been extensively considered in cyanobacteria. Recently, most studies have been focused on different habitats using microalgae leads to a remarkable reduction of an array of organic and inorganic nutrients, but what takes place in the extracellular environment when cells are exposed to external supplementation with heavy metals remains largely unknown. Methods Here, extracellular polymeric substances (EPS) production in strains Nostoc sp. N27P72 and Nostoc sp. FB71 was isolated from different habitats and thenthe results were compared and reported. Result Cultures of both strains, supplemented separately with either glucose, sucrose, lactose, or maltose showed that production of EPS and cell dry weight were boosted by maltose supplementation. The production of EPS (9.1 ± 0.05 μg/ml) and increase in cell dry weight (1.01 ± 0.06 g/l) were comparatively high in Nostoc sp. N27P72 which was isolated from lime stones.The cultures were evaluated for their ability to remove Cu (II), Cr (III), and Ni (II) in culture media with and without maltose. The crude EPS showed metal adsorption capacity assuming the order Ni (II) > Cu (II) > Cr (III) from the metal-binding experiments.Nickel was preferentially biosorbed with a maximal uptake of 188.8 ± 0.14 mg (g cell dry wt) −1 crude EPS. We found that using maltose as a carbon source can increase the production of EPS, protein, and carbohydrates content and it could be a significant reason for the high ability of metal absorbance. FT-IR spectroscopy revealed that the treatment with Ni can change the functional groups and glycoside linkages in both strains. Results of Gas Chromatography-Mass Spectrometry (GC–MS) were used to determine the biochemical composition of Nostoc sp. N27P72, showed that strong Ni (II) removal capability could be associated with the high silicon containing heterocyclic compound and aromatic diacid compounds content. Conclusion The results of this studyindicatede that strains Nostoc sp. N27P72 can be a good candidate for the commercial production of EPS and might be utilized in bioremediation field as an alternative to synthetic and abiotic flocculants.

show abstract

Section: Introductionmentioning

confidence: 99%

Metal removal capability of two cyanobacterial species in autotrophic and mixotrophic mode of nutrition

et al. 2022

View full text Add to dashboard Cite

show abstract

“…AgNPs have been synthesized using aqueous extracts of various plant sources including pomegranate peel, Cacumen Platycladi, Breynia rhamnoides, Capsicum annuum L., Alpinia katsumadai, Viburnum opulus L., Picea abies L., Thymbra spicata, Ocimum sanctum, Lonicera japonica, Ecklonia cava, Ekebergia capensis, Abelmoschus esculentus L., rice husk, coffee bean, Cinnamomum camphora, Spirulina platensis, and Sorghum bran …”

Section: Introductionmentioning

confidence: 99%

“…29 In contrast, the plant-source-based biogenic synthesis is advantageous in the simple handling procedures, scalability, and preclusion of cell culture maintenance, and as a result, it is becoming popular. 30 AgNPs have been synthesized using aqueous extracts of various plant sources including pomegranate peel, 27 Cacumen Platycladi, 28 Breynia rhamnoides, 29 Capsicum annuum L., 30 Alpinia katsumadai, 31 Viburnum opulus L., 32 Picea abies L., 33 Thymbra spicata, 34 Ocimum sanctum, 35 Lonicera japonica, 36 Ecklonia cava, 37 Ekebergia capensis, 38 Abelmoschus esculentus L., 39 rice husk, 40 coffee bean, 41 Cinnamomum camphora, 42 Spirulina platensis, 43 and Sorghum bran. 44 In some cases, edible parts of plant sources are used as the precursors of biogenic synthesis of AgNPs causing competition with food.…”

Section: Introductionmentioning

confidence: 99%

Biogenic Synthesis and Catalytic Efficacy of Silver Nanoparticles Based on Peel Extracts of Citrus macroptera Fruit

et al. 2021

View full text Add to dashboard Cite

Biogenically synthesized silver nanoparticles (AgNP) increase the fascination over chemical ones due to their facile and green synthetic process. This study reports the development of an eco-friendly and cost-effective synthesis of AgNPs using an aqueous extract of Citrus macroptera fruit peel, an agricultural waste, as a sole agent with both reducing and capping abilities. The formation of AgNPs was verified by the surface plasmon resonance peak at 426 nm in the UV−vis spectrum, X-ray diffraction pattern, and transmission electron micrography images. The AgNPs obtained under the optimized conditions consist of face-centered cubic crystals and spherical morphology with an average size of 11 nm. The AgNPs are coated with phytochemicals in the C. macroptera fruit peel extract and are stably dispersible due to their negatively charged nature. The AgNPs effectively catalyzed the reduction of 4-nitrophenol to 4-aminophenol and the degradation of methyl orange and methylene blue in the presence of sodium borohydride. This method employing a fruit peel extract is facile, efficient, eco-friendly, and cost-effective and has potential for industrial green fabrication of AgNPs.

show abstract

“…Most of these polymers are characterized by an anionic nature, owing to the presence of uronic acids and/or of other charged groups (Pereira et al, 2013). As a result, these polysaccharides typically keep very high a nity to metallic ions and can be considered very promising as chelating agents for the removal of heavy metals from water (Kumar et al, 2007;De Philippis et al 2001;Cepoi et al, 2019;Kumaran et al, 2011;Ni et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Modification of heavy metals toxicity by Cyanobacteria Nostoc sp. N27P72 and Nostoc sp. FB71 in Culture Conditions

Ghorbani

Nowruzi

NejadAli

et al. 2021

Preprint

View full text Add to dashboard Cite

Purpose: Cyanobacteria are ecologically relevant prokaryotes that can be found in environments contaminated with heavy metals. As their photosynthetic machinery imposes high demands for metals, homeostasis of these micronutrients has been extensively considered in cyanobacteria. So far, most studies have focused on treatment of wastewaters using microalgae leads to remarkable reduction of an array of organic and inorganic nutrients, but what takes place in the extracellular environment when cells are exposed to external supplementation with heavy metals remains largely unknown. Methods: Here, extracellular polymeric substances (EPS) production in strains Nostoc sp. N27P72 and Nostoc sp. FB71 isolated from different habitats are reported and compared. Cultures of both strains, supplemented with either glucose, sucrose, lactose or maltose showed that production of EPS and cell dry weight was boosted by maltose supplementation. Result: Nostoc sp. N27P72 which was isolated from lime stones was higher, resulting in 9.1 ± 0.05 µg/ml and 1.01 ± 0.06 g/l in EPS and cell dry. The cell cultures tested for their ability to remove Cu(II), Cr(III) and Ni(II) in media culture containing the maltose and without maltose as control culture. Remarkably, we showed that although these elements can be toxic, supplementing the media culture can effectively sequester their toxic effects by increasing the production of EPSs, carbohydrates and total soluble proteins in comparison to control. The crude EPS showed metal adsorption capacity assuming the order Ni(II)> Cu(II)> Cr(III) from metal-binding experiments. Nickel was preferentially biosorbed with a maximal uptake of 188.8 ± 0.14 mg (g cell dry wt) -1 crude EPS. FT-IR spectroscopy revealed treatment with Ni made changes in the functional groups and glycoside linkages in both strains. Results of Gas Chromatography Mass Spectrometry (GC–MS) to determine the biochemical composition of Nostoc sp. N27P72 showed that strong Ni(II) removal capability is suspected to be associated with the high Cyclotrisiloxane and 1,2-Benzenedicarboxylic acid content. Conclusion: The results of these investigates specified that strains Nostoc sp. N27P72 is good candidates for the commercial production of EPS and might be utilized in bioremediation field as an alternative to synthetic and abiotic flocculants.

show abstract

Silver and Gold Ions Recovery from Batch Systems Using Spirulina platensis Biomass

Cited by 8 publications

References 25 publications

Metal removal capability of two cyanobacterial species in autotrophic and mixotrophic mode of nutrition

Metal removal capability of two cyanobacterial species in autotrophic and mixotrophic mode of nutrition

Biogenic Synthesis and Catalytic Efficacy of Silver Nanoparticles Based on Peel Extracts of Citrus macroptera Fruit

Modification of heavy metals toxicity by Cyanobacteria Nostoc sp. N27P72 and Nostoc sp. FB71 in Culture Conditions

Contact Info

Product

Resources

About