Cyanobacteria as Potential Options for Wastewater Treatment

Sood, Anjuli; Renuka, Nirmal; Prasanna, Radha; Ahluwalia, A. S.

doi:10.1007/978-3-319-10969-5_8

Cited by 34 publications

(18 citation statements)

References 43 publications

(38 reference statements)

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“…were recorded as trichomes multicellular cylindrical, sheath absent, trichomes coiled into a regular spiral shape, apex of trichome were not attenuated, terminal cell rounded, and without calyptra. Some species of Microcystis is a potential toxin-producing agent (Ruangsomboon et al 2014), whereas most of the species from Oscillatoria, Lyngbya, Microcystis, and Spirulina are reported for antimicrobial (Padhi et al 2014;Yadav et al 2015), pharmaceutical (Raja et al 2015), waste water treatment (Sood et al 2015), and biofuel industry (Thingujam et al 2015).…”

Section: Morphological Identificationmentioning

confidence: 99%

Antioxidant properties in some selected cyanobacteria isolated from fresh water bodies of Sri Lanka

Hossain

Ratnayake

Meerajini

et al. 2016

Food Science & Nutrition

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Phytonutrients and pigments present in cyanobacteria act as antioxidants, which facilitate the formation of body's defense mechanism against free radical damage to cells. The aim of this investigation was to study the total phenolic content ( TPC ), total flavonoid content ( TFC ), antioxidant activity, phycobiliproteins ( PBP s), and active compounds in four cyanobacterial species, that is, Oscillatoria sp., Lyngbya sp., Microcystis sp., and Spirulina sp. isolated from fresh water bodies of Sri Lanka. In this study, Lyngbya sp. , showed highest TPC (5.02 ± 0.20 mg/g), TFC (664.07 ± 19.76 mg/g), and total PBP s (127.01 mg/g) value. The ferric reducing antioxidant power ( FRAP ) was recorded highest in Oscillatoria sp. (39.63 ± 7.02), whereas the 2,2‐diphenyl‐1‐picrylhydrazyl ( DPPH ) radical scavenging activity was also reported the highest in Oscillatoria sp. (465.31 ± 25.76) followed by Lyngbya sp. (248.39 ± 11.97). In FTIR spectroscopy, Lyngbya sp. does not show any N‐H stretching band which is ultimately responsible for the inhibition of antioxidant activity. The study revealed that Lyngbya sp. and Oscillatoria sp. can be an excellent source for food, pharmaceutical, and other industrial uses.

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Section: Morphological Identificationmentioning

confidence: 99%

Antioxidant properties in some selected cyanobacteria isolated from fresh water bodies of Sri Lanka

Hossain

Ratnayake

Meerajini

et al. 2016

Food Science & Nutrition

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“…Sewage treatment is quite costly, in addition to being responsible for emissions to the environment [157,158], so bioremediation of these residues is an interesting alternative. Secondary sewage removal focuses on organic matter, and in order to reduce biological oxygen demand (BOD), this step benefits from heterotrophic bacteria that use said matter for growth and energy [154], but photosynthetic organisms also show potential for this role as they produce oxygen for other bacteria [159] and are also efficient in reducing oxygen demands in waste, as seen in the PHB-producing species A. fertilissima [78]. Secondary treated wastewater, although poorer in general as organic matter was mostly removed, is still loaded with micronutrients that can be further assimilated by cyanobacteria in a tertiary treatment [156,160].…”

Section: Waste Utilization and Bioremediationmentioning

confidence: 99%

Cyanobacterial Polyhydroxyalkanoates: A Sustainable Alternative in Circular Economy

2020

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Conventional petrochemical plastics have become a serious environmental problem. Its unbridled use, especially in non-durable goods, has generated an accumulation of waste that is difficult to measure, threatening aquatic and terrestrial ecosystems. The replacement of these plastics with cleaner alternatives, such as polyhydroxyalkanoates (PHA), can only be achieved by cost reductions in the production of microbial bioplastics, in order to compete with the very low costs of fossil fuel plastics. The biggest costs are carbon sources and nutrients, which can be appeased with the use of photosynthetic organisms, such as cyanobacteria, that have a minimum requirement for nutrients, and also using agro-industrial waste, such as the livestock industry, which in turn benefits from the by-products of PHA biotechnological production, for example pigments and nutrients. Circular economy can help solve the current problems in the search for a sustainable production of bioplastic: reducing production costs, reusing waste, mitigating CO2, promoting bioremediation and making better use of cyanobacteria metabolites in different industries.

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“…Therefore, there is an urgent need to develop eco-friendly and economic technologies for wastewater treatment, which would require simple infrastructure, lesser inputs and with potential acceptance at the commercial level (Sood et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Phycoremediation is broadly defined as the utilization of microalgae and cyanobacteria (blue-green algae), for the removal of contaminants from wastewater. It is a promising technology offer an inexpensive alternative to conventional forms of tertiary wastewater treatments (Sood et. al., 2015).…”

Section: Introductionmentioning

confidence: 99%

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Antioxidant activity and phycoremediation ability of four cyanobacterial isolates obtained from a stressed aquatic system

Badr

El-Shawaf

El-Garhy

et al. 2019

Molecular Phylogenetics and Evolution

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Cyanobacteria are natural enormous sources of various biologically active compounds with great contributions in different industries. This study aimed to introduce molecular and biochemical characterization for four novel cyanobacterial isolates obtained from Egyptian wastewater canals. Besides, In vitro biological activity of these isolates and their potential ability to take up nutrients and heavy metals from wastewater were examined. The obtained accession numbers were KY250420.1, KY321359.1, KY296359.1 and KU373076.1 for Nostoc calcicola, Leptolyngbya sp, Nostoc sp, and Nostoc sp, respectively. The isolate Leptolyngbya sp (KY321359.1) showed the lowest identity (90%) with other deposited sequences in database. While the isolate Nostoc sp (KU373076.1) showed the highest total phenolic content as well as the highest levels of caffeic, ferulic and gallic acids. Consequently, it appeared the highest antioxidant scavenging activity. All cyanobacterial isolates revealed potent ability to take up nutrients and heavy metals from wastewater. Generally, this study provides a taxonomic and molecular evidence for four novel cyanobacterial isolates with antioxidant activity and potent phycoremediation ability.

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Cyanobacteria as Potential Options for Wastewater Treatment

Cited by 34 publications

References 43 publications

Antioxidant properties in some selected cyanobacteria isolated from fresh water bodies of Sri Lanka

Antioxidant properties in some selected cyanobacteria isolated from fresh water bodies of Sri Lanka

Cyanobacterial Polyhydroxyalkanoates: A Sustainable Alternative in Circular Economy

Antioxidant activity and phycoremediation ability of four cyanobacterial isolates obtained from a stressed aquatic system

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