Wealth from waste: Diatoms as tools for phycoremediation of wastewater and for obtaining value from the biomass

Marella, Thomas Kiran; López-Pacheco, Itzel Y.; Parra‐Saldívar, Roberto; Dixit, Sreenath; Tiwari, Archana

doi:10.1016/j.scitotenv.2020.137960

Cited by 101 publications

(31 citation statements)

References 187 publications

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“…Diatoms with unique cellular, metabolic, and photosynthetic properties are broadly employed for the phytoremediation of heavy metals contamination in wastewaters (Table ). , In one study, Navicula pelliculosa strain CCMP543 and P. tricornutum strain CCY0033 diatoms were employed for the bioremediation of dichromate and the production of lipids serving as a biofuel . To achieve significant yields of biomass, accumulation of lipids, and dichromate elimination, various growth conditions were evaluated.…”

Section: Applications Of Diatomsmentioning

confidence: 99%

Diatoms with Invaluable Applications in Nanotechnology, Biotechnology, and Biomedicine: Recent Advances

Rabiee

Khatami

Soufi

et al. 2021

ACS Biomater. Sci. Eng.

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Diatoms are unicellular microalga found in soil and almost every aquatic environment (marine and fresh water). Biogenic silica and diatoms are attractive for biotechnological and industrial applications, especially in the field of biomedicine, industrial/synthetic manufacturing processes, and biomedical/pharmaceutical sciences. Deposition of silica by diatoms allows them to create micro- or nanoscale structures which may be utilized in nanomedicine and especially in drug/gene delivery. Diatoms with their unique architectures, good thermal stability, suitable surface area, simple chemical functionalization/modification procedures, ease of genetic manipulations, optical/photonic characteristics, mechanical resistance, and eco-friendliness, can be utilized as smart delivery platforms. The micro- to nanoscale properties of the diatom frustules have garnered a great deal of attention for their application in diverse areas of nanotechnology and biotechnology, such as bioimaging/biosensing, biosensors, drug/gene delivery, photodynamic therapy, microfluidics, biophotonics, solar cells, and molecular filtrations. Additionally, the genetically engineered diatom microalgae-derived nanoporous biosilica have enabled the targeted anticancer drug delivery to neuroblastoma and B-lymphoma cells as well as the mouse xenograft model of neuroblastoma. In this perspective, current trends and recent advances related to the applications of diatoms for the synthesis of nanoparticles, gene/drug delivery, biosensing determinations, biofuel production, and remediation of heavy metals are deliberated, including the underlying significant challenges and future perspectives.

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Section: Applications Of Diatomsmentioning

confidence: 99%

Diatoms with Invaluable Applications in Nanotechnology, Biotechnology, and Biomedicine: Recent Advances

Rabiee

Khatami

Soufi

et al. 2021

ACS Biomater. Sci. Eng.

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“…silica also required. (Marella et al, 2020;Zullaikah et al, 2019). Microalgae can reproduce fast in a liquid medium and simple nutrients are required for that as mentioned above.…”

Section: Cultivation Of Algaementioning

confidence: 99%

“…To culture, the microalgae, the environment where they grow or survive (water) should be rich in nitrate, phosphate, vitamins, and trace element (major nutrients are phosphorus and nitrogen) but in the case of diatom including all the nutrients, one major component i.e. silica also required (Marella et al, 2020;Zullaikah et al, 2019)…”

mentioning

confidence: 99%

Sustainable Approaches Towards Aquaculture: Microalgal Circular Economy Perspectives

Mishra¹,

Tiwari²,

Mahmoud

2021

Preprint

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Microalgae have higher nutritional value as they are abundant in protein, carbohydrates, lipids, and vitamins. Hence, they play several important roles in aquaculture and are known as a major source of the food chain for aquaculture organisms. Furthermore, they are also used indirectly or directly by humans as food supplements and medicines to improve health by strengthening the immune system. Microalgae are used as biocontrol agents because they have biocidal properties, produce biomolecules (beta carotene, PUFA, and astaxanthin), wastewater, are a renewable resource of biofuel, and are used in wastewater treatment. Due to the overexploitation of wild fish and pollution, aquaculture faces serious issues. Eco- friendly methods are required to overcome this problem, so, microalgae are in practicing, that control the water pollution. Fishmeal is a rich source of protein in aquaculture but it is decreasing over time and has become cost-effective, so, to solve the problem, microalgae are used to replace the fishmeal which (microalgae as aquafeed) is cheap and not required large area to grow. Microalgae are seemed to be very useful in the growth enhancement of aquatic organisms.

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“…solar energy into chemical energy and produce a large quantity of biomass, which is very useful to produce biofuel, food supplements for animals, and bio-fertilizer [1]. Microalgae contain highly valuable bioactive compounds like lipids, proteins, vitamins, minerals, and pigments [2] that have antioxidant, cytotoxic, and antimicrobial activity [3].…”

mentioning

confidence: 99%

Cultivation of Anabena variabilis, Synechococcus elongatus, Spirulina platensis for the production of C-Phycocyanin, C-Phycoerythrin and Thalassiosira, Skeletonema, Chaetoceros for fucoxanthin

Mishra

Tiwari

2021

Syst Microbiol and Biomanuf

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The pigments are vital parts of photosynthetic machinery in algae and exhibit a myriad of applications as nutraceuticals, cosmetics, colorants, which find huge applications in many industires, including the paint industry and paper industry. The antimicrobial, antioxidative, anti-inflammatory, and anti-cancer potential of microalgal pigments contribute towards their varied industrial applications. In this study, pigments (Fucoxanthin, C-phycocyanin, and C-phycoerythrin), extracted from microalgae were investigated to check the antimicrobial efficacy using agar well diffusion and disc diffusion methods against pathogenic bacteria: Staphylococcus aureus and Escherichia coli. The fucoxanthin pigment isolated from diatom Thalassiosira sp. exhibited the highest antibacterial activity against Staphylococcus aureus (17 ± 1.53 mm) and in contrast fucoxanthin pigment isolated from Chaetoceroes sp. exhibited the highest bactericidal activity against Escherichia coli (18 ± 1). The pigment extract of Spirulina plantesis showed the highest antibacterial activity against E. coli (41 ± 0.3) and S. elongatus also exhibited high antibacterial activity against E. coli (32 ± 0.5) while Anabaena variabilis showed the highest antibacterial activity against Staphylococcus aureus (34 ± 0.5). The potential of microalgal pigments is highly valuable and further extensive studies can elaborate the underlying mechanisms.

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Wealth from waste: Diatoms as tools for phycoremediation of wastewater and for obtaining value from the biomass

Cited by 101 publications

References 187 publications

Diatoms with Invaluable Applications in Nanotechnology, Biotechnology, and Biomedicine: Recent Advances

Diatoms with Invaluable Applications in Nanotechnology, Biotechnology, and Biomedicine: Recent Advances

Sustainable Approaches Towards Aquaculture: Microalgal Circular Economy Perspectives

Cultivation of Anabena variabilis, Synechococcus elongatus, Spirulina platensis for the production of C-Phycocyanin, C-Phycoerythrin and Thalassiosira, Skeletonema, Chaetoceros for fucoxanthin

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