Impact of heavy metals from flue gas integration with microalgae production

Napan, Katerine; Teng, Lihong; Quinn, Jason C.; Wood, Byard D.

doi:10.1016/j.algal.2015.01.003

Cited by 66 publications

(28 citation statements)

References 52 publications

(59 reference statements)

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“…3c). The findings of Napan et al (2015) confirmed this result, where they found that lipid content of microalgae (Scenedesmus obliquus) increased 61 % when it was exposed to a very low level of heavy metals (e.g., As, Cd, Co, Cr, Cu, Hg, Ni, Pb, Se, and Zn), which probably because algae regulated adaptation to heavy metal stress and in turn activated the metabolic and antioxidant mechanism to overcome exogenous toxicants (Spoljaric et al 2011).…”

Section: Subtoxic Concentrations Of Ctab Changed the Biochemical Compsupporting

confidence: 83%

Nutrient removal by Chlorella vulgaris F1068 under cetyltrimethyl ammonium bromide induced hormesis

Zhou

et al. 2016

Environ Sci Pollut Res

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Toxicants are generally harmful to biotechnology in wastewater treatment. However, trace toxicant can induce microbial hormesis, but to date, it is still unknown how this phenomenon affects nutrient removal during municipal wastewater treatment process. Therefore, this study focused on the effects of hormesis induced by cetyltrimethyl ammonium bromide (CTAB), a representative quaternary ammonium cationic surfactant, on nutrient removal by Chlorella vulgaris F1068. Results showed that when the concentration of CTAB was less than 10 ng/L, the cellular components chlorophyll a, proteins, polysaccharides, and total lipids increased by 10.11, 58.17, 38.78, and 11.87 %, respectively, and some enzymes in nutrient metabolism of algal cells, such as glutamine synthetase (GS), acid phosphatase (ACP), H(+)-ATPase, and esterase, were also enhanced. As a result, the removal efficiencies of ammonia nitrogen (NH4 (+)) and total phosphorus (TP) increased by 14.66 and 8.51 %, respectively, compared to the control during a 7-day test period. The underlying mechanism was mainly due to an enhanced photosynthetic activity of C. vulgaris F1068 indicated by the increase in chlorophyll fluorescence parameters (the value of Fv/Fm, ΦII, Fv/Fo, and rETR increased by 12.99, 7.56, 25.59, and 8.11 %, respectively) and adenylate energy charge (AEC) (from 0.68 to 0.72). These results suggest that hormesis induced by trace toxicants could enhance the nutrient removal, which would be further considered in the design of municipal wastewater treatment processes. Graphical abstract The schematic mechanism of C. vulgaris F1068 under CTAB induced hormesis. Green arrows ( ) represent the increase and the red arrow ( ) represents the decrease.

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Section: Subtoxic Concentrations Of Ctab Changed the Biochemical Compsupporting

confidence: 83%

Nutrient removal by Chlorella vulgaris F1068 under cetyltrimethyl ammonium bromide induced hormesis

Zhou

et al. 2016

Environ Sci Pollut Res

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“…As previously noted for heavy metals in waste‐waters, the most important impact is related to their presence in biodiesel. Hence, heavy metal concentrations in the final biofuel product and by‐products must be quantified in future studies to provide a more accurate assessment regarding the full impact of integrating of flue gas supplementation with microalgae cultivation . The large‐scale production of microalgae with flue gas would best be conducted using strains adapted for the operational conditions imposed by the use of flue gas including and toxic pollutant concentrations, and high temperature.…”

Section: Waste Streams For Microalgal Cultivationmentioning

confidence: 92%

Microalgal cultivation with waste streams and metabolic constraints to triacylglycerides accumulation for biofuel production

Champagne

Plaxton

et al. 2016

Biofuels Bioprod Bioref

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BUSINESS HIGHLIGHTS 239 Global impacts of the bioeconomy | Missed opportunity | Believing in biofuels | Praising Trump | Funding opportunity available | Utilizing waste | More research into algae | Avoiding iLUC TECHNOLOGY NEWS 242 New yeast strain boosts lipid production | The fresh smell of pinene FEATURE 243 Interactive posters: A valuable means of enhancing communication and learning about productive paths toward sustainable bioenergy ERRATUM 396 Erratum The cover image, by Shijian Ge et al., is based on the Review Microalgal cultivation with waste streams and metabolic constraints to triacylglycerides accumulation for biofuel production,

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“…at higher concentrations, heavy metals, such as As, Co, Cd, Cr, Hg, Cu, Ni, Se, Pb, and Zn, inhibit the growth rate and CO 2 capturing capacity of microalgae…”

Section: Effect Of Flue Gas Compounds On Microalgae and Vice Versamentioning

confidence: 99%

Impact of Flue Gas Compounds on Microalgae and Mechanisms for Carbon Assimilation and Utilization

et al. 2018

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To shift the world to a more sustainable future, it is necessary to phase out the use of fossil fuels and focus on the development of low-carbon alternatives. However, this transition has been slow, so there is still a large dependence on fossil-derived power, and therefore, carbon dioxide is released continuously. Owing to the potential for assimilating and utilizing carbon dioxide to generate carbon-neutral products, such as biodiesel, the application of microalgae technology to capture CO from flue gases has gained significant attention over the past decade. Microalgae offer a more sustainable source of biomass, which can be converted into energy, over conventional fuel crops because they grow more quickly and do not adversely affect the food supply. This review focuses on the technical feasibility of combined carbon fixation and microalgae cultivation for carbon reuse. A range of different carbon metabolisms and the impact of flue gas compounds on microalgae are appraised. Fixation of flue gas carbon dioxide is dependent on the selected microalgae strain and on flue gas compounds/concentrations. Additionally, current pilot-scale demonstrations of microalgae technology for carbon dioxide capture are assessed and its future prospects are discussed. Practical implementation of this technology at an industrial scale still requires significant research, which necessitates multidisciplinary research and development to demonstrate its viability for carbon dioxide capture from flue gases at the commercial level.

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Impact of heavy metals from flue gas integration with microalgae production

Cited by 66 publications

References 52 publications

Nutrient removal by Chlorella vulgaris F1068 under cetyltrimethyl ammonium bromide induced hormesis

Nutrient removal by Chlorella vulgaris F1068 under cetyltrimethyl ammonium bromide induced hormesis

Microalgal cultivation with waste streams and metabolic constraints to triacylglycerides accumulation for biofuel production

Impact of Flue Gas Compounds on Microalgae and Mechanisms for Carbon Assimilation and Utilization

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