Investigating the potentiality of Scenedesmus obliquus and Acinetobacter pittii partnership system and their effects on nutrients removal from synthetic domestic wastewater

Russel, Mohammad; Qu, Meixue; Alam, Md. Asraful; Liu, Lifen; Daroch, Maurycy; Blaszczak-Boxe, Christopher S.; Gupta, Girish Kumar

doi:10.1016/j.biortech.2019.122571

Cited by 32 publications

(3 citation statements)

References 39 publications

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“…The biomass concentration of D. salina in coculture was determined indirectly by measuring the chlorophyll a and b (Chl a + b) concentrations in co-culture according to the method of Russel et al (2020) . Generally, 0.5 ml of sample was centrifuged at 13,400 rpm for 10 min and the supernatant was discarded.…”

Section: Methodsmentioning

confidence: 99%

Effect of co-culture with Halomonas mongoliensis on Dunaliella salina growth and phenol degradation

Zhang

Huang

Tang

2022

Front. Bioeng. Biotechnol.

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The discharge of industrial phenol wastewater has caused great harm to the environment. This study aims to construct microalgae and bacteria co-culture system to remove phenol from simulated high-salt phenol wastewater and accumulate microalgae biomass. The degradation of phenol by marine microalgae Dunaliella salina (D. salina) and phenol-degrading bacteria Halomonas mongoliensis (H. mongoliensis) was investigated preliminarily, and then the effects of co-culture H. mongoliensis and D. salina on the degradation of phenol and the growth of D. salina were studied. The effects of D. salina/H. mongoliensis inoculation ratio, light intensity, temperature and pH on the performance of the co-culture system were systematically evaluated and optimized. The optimal conditions for phenol degradation were as follows: a D. salina/H. mongoliensis inoculation ratio of 2:1, a light intensity of 120 μmol m−2 s−1, a temperature of 25°C and a pH around 7.5. Under optimal conditions, this co-culture system could completely degrade 400 mg L−1 of phenol within 5 days. Correspondingly, the phenol degradation rate of D. salina monoculture was only 30.3% ± 1.3% within 5 days. Meanwhile, the maximum biomass concentration of D. salina in coculture was 1.7 times compared to the monoculture. This study suggested that this coculture system had great potential for the bioremediation of phenol contaminants and accumulate microalgae biomass.

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Section: Methodsmentioning

confidence: 99%

Effect of co-culture with Halomonas mongoliensis on Dunaliella salina growth and phenol degradation

Zhang

Huang

Tang

2022

Front. Bioeng. Biotechnol.

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“…Thus, the inhibitory initial concentrations of AN were effectively reduced by symbiotic transformations of nitrifying bacteria and the growth of microalgae. According to the literature, the algalbacterial consortia have become particularly attractive for wastewater treatment plants over the past few years because they efficiently produce molecular oxygen, which is utilized in organic removal and significantly intensifies nitrification [39][40][41][42]. The literature data shows that microalgal growth was significantly affected by ammonium, but the microalga in mixotrophic cultivation shows better growth and stronger tolerance to higher ammonium.…”

Section: Microalgal Growthmentioning

confidence: 99%

Effects of Liquid Digestate Treatment on Sustainable Microalgae Biomass Production

et al. 2021

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The aim of the study was to investigate the potential of microalgal cultivation on anaerobic liquid digestate as a growth medium. The two methods of liquid digestate treatment including centrifugation and distillation and the two algal strains (Chlorella vulgaris and Arthrospira platensis) were compared. Additionally, the volume of the liquid digestate used to prepare the culture medium constituted from 10 to 50% of the medium volume. The study demonstrated that the highest C. vulgaris and A. platensis biomass productions of 2490 mg TS/L and 2990 mg/L, respectively, were obtained by adding 50% of distilled digestate to a growth medium. Regarding centrifuged liquid digestate, only 10% dilution was required to obtain the maximum final biomass concentration. A. platensis removed 81.1% and 66.4% of the total nitrogen from medium prepared on distilled and centrifuged digestate, respectively, while C. vulgaris ensured 64.1% and 47.1% of removal, respectively. The phosphorus removal from both culture media was higher than 94.2% with A. platensis, while it was 70.4% from distilled and 87.4% from centrifuged media with C. vulgaris. The study confirmed a great potential of microalgal biomass production on anaerobic liquid digestate with a high treatment efficiency of digestate.

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“…4,7 Several microalgae species have been reported to have the capability for CO 2 fixation and also to grow in urban wastewaters among which Scenedesmus obliquus and Chlorella vulgaris are the most promising candidates. [8][9][10][11][12] Su et al 13 compared the nutrient removal efficiency of high-potential microalgae species C. vulgaris and Scenedesmus rubescens cultivated in secondary effluent urban wastewater, and reported nitrogen (N) and phosphorus (P) removal efficiencies of >99% for both microalgae species. Liu et al 14 evaluated the influence of CO 2 concentration from 1% to 20% on C. vulgaris in domestic wastewater, and determined a maximum microalgal biomass concentration of 1.12 g L −1 with 10% CO 2 as feed gas.…”

Section: Introductionmentioning

confidence: 99%

Effects of simultaneous CO₂ addition and biomass recycling on growth characteristics of microalgal mixed culture

Fallahi

Hajinajaf

Tavakoli

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND: This study aims to investigate the effect of simultaneous carbon dioxide (CO 2 ) addition and biomass recycling on specific performance parameters (including biomass productivity and harvestability, and species abundance) of the mixed culture of two freshwater microalgae species Chlorella vulgaris and Scenedesmus obliquus in a flat-panel photobioreactor grown semicontinuously using secondary effluent urban wastewater as the culture medium. Recycling a portion of the gravityharvested biomass back to the system has positive effects on biomass productivity and harvestability by letting microalgal cells utilize more of the available light energy and promoting the dominance of settleable microalgal species of S. obliquus (owing to their large cell sizes) in the mixed culture. Furthermore, CO 2 addition could supply the carbon limitation of urban wastewater and boost biomass production. RESULTS:The work confirmed that simultaneous CO 2 addition and biomass recycling improved the biomass productivity by 314%, promoted the dominance of the larger algae species S. obliquus in the mixed culture by 38%, and increased the gravity sedimentation by 85% compared to the control that had no recycling and CO 2 addition. Concerning the secondary effluent urban wastewater, the interaction of CO 2 addition and biomass recycling was insignificant regarding the improvement in nutrient removal efficiency.CONCLUSION: The findings proved the potential benefits of simultaneous biomass recycling and CO 2 addition for reaching a high cell density, and demonstrated its potential for high biomass harvest efficiency in microalgae-based wastewater treatment systems.

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Investigating the potentiality of Scenedesmus obliquus and Acinetobacter pittii partnership system and their effects on nutrients removal from synthetic domestic wastewater

Cited by 32 publications

References 39 publications

Effect of co-culture with Halomonas mongoliensis on Dunaliella salina growth and phenol degradation

Effect of co-culture with Halomonas mongoliensis on Dunaliella salina growth and phenol degradation

Effects of Liquid Digestate Treatment on Sustainable Microalgae Biomass Production

Effects of simultaneous CO₂ addition and biomass recycling on growth characteristics of microalgal mixed culture

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Investigating the potentiality of Scenedesmus obliquus and Acinetobacter pittii partnership system and their effects on nutrients removal from synthetic domestic wastewater

Cited by 32 publications

References 39 publications

Effect of co-culture with Halomonas mongoliensis on Dunaliella salina growth and phenol degradation

Effect of co-culture with Halomonas mongoliensis on Dunaliella salina growth and phenol degradation

Effects of Liquid Digestate Treatment on Sustainable Microalgae Biomass Production

Effects of simultaneous CO2 addition and biomass recycling on growth characteristics of microalgal mixed culture

Contact Info

Product

Resources

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Effects of simultaneous CO₂ addition and biomass recycling on growth characteristics of microalgal mixed culture