Lipid and biodiesel production by cultivation isolated strain Chlorella sorokiniana pa.91 and Chlorella vulgaris in dairy wastewater treatment plant effluents

Asadi, Pariya; Rad, Hasan Amini; Qaderi, Farhad

doi:10.1007/s40201-020-00483-y

Cited by 25 publications

(16 citation statements)

References 56 publications

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“…Chlorella has been widely recognized as one of the most common microalgae used to treat wastewater [15]. C. sorokiniana has been successfully isolated from many sources of wastewater, such as in palm oil mill wastewater [32], secondary effluent of municipal wastewater [21], dairy wastewater [42], chicken farm flushing wastewater [15], and urban wastewater [43].…”

Section: Isolation and Screening Of Microalgaementioning

confidence: 99%

Application of Two Indigenous Strains of Microalgal Chlorella sorokiniana in Cassava Biogas Effluent Focusing on Growth Rate, Removal Kinetics, and Harvestability

Padri

Boontian

Teaumroong

et al. 2021

Water

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Microalgae cultivation in wastewater is an emerging approach to remove its contaminants and generate microalgal biomass. This study aimed to screen and isolate potential strains in a cassava biogas effluent wastewater (CBEW) treatment system and produce algal biomass. Chlorella sorokiniana strains P21 and WB1DG were isolated from CBEW and found to grow by utilizing various carbon sources. Experiments conducted in a batch reactor using an unsterilized substrate were done to evaluate the nutrient removal and growth of isolated strains from CBEW. The results showed that C. sorokiniana P21 and WB1DG could achieve biomass accumulation of more than 2564 and 1301 mg L−1, respectively. The removal efficiencies of chemical oxygen demand (COD), total phosphorous (TP), and total inorganic nitrogen (TIN) were found up to be 63.42, 91.68, and 70.66%, respectively, in a WB1DG culture and 73.78, 92.11, and 67.33%, respectively, in a P21 culture. Harvestability of the P21 strain was examined using several coagulant–flocculants. FeCl3 was found to remove more than 90% of the cells. Nutrient removal and growth rates resulting from these indigenous strains with application of untreated CBEW support the possibility of this strain being a promising candidate to couple a CBEW treatment and algal biomass generation with minimal process adjustment.

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Section: Isolation and Screening Of Microalgaementioning

confidence: 99%

Application of Two Indigenous Strains of Microalgal Chlorella sorokiniana in Cassava Biogas Effluent Focusing on Growth Rate, Removal Kinetics, and Harvestability

Padri

Boontian

Teaumroong

et al. 2021

Water

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“…Under the frame of a circular economy, some recent articles have examined the use of microalgae for DWW treatment 8–10 and for the production of valuable biomass 11–14 . Qin et al 15 .…”

Section: Introductionmentioning

confidence: 99%

“…used pretreated DWW and reported that the lipid content of Chlorella vulgaris ranged up to 14.4%. Asadi et al 8,12 . reported important removal of chemical oxygen demand (COD) and nutrients in batch experiments with Chlorella sorokiniana that was grown in preliminary and secondary treated DWW, while its lipid content ranged up to 35%.…”

Section: Introductionmentioning

confidence: 99%

Treatment of different dairy wastewater with Chlorella sorokiniana: removal of pollutants and biomass characterization

Iliopoulou

Zkeri

Panara

et al. 2022

J of Chemical Tech & Biotech

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BACKGROUND: There is a continuous need for the development of novel processes for the sustainable management of dairy wastewater. The use of microalgae for wastewater decontamination and production of valuable biomass seems a promising alternative; however, limited information currently exists on the chemical characteristics of the biomass cultivated in effluents from the dairy industry. In this paper, experiments were carried out with the microalga Chlorella sorokiniana and different types of dairy effluents (raw dairy wastewater, anaerobically treated dairy wastewater, cheese whey). The collected biomass was characterized for the existence of proteins, starch, lipids, lutein, ⊎-carotene, polyphenolic compounds and amino acids.RESULTS: The removal of chemical oxygen demand and NH 4 -N was higher than 91% and 80%, respectively, for all types of dairy effluents, while the removal of total phosphorus ranged between 20% and 84%. The protein, starch and lipid contents of the microalgal biomass ranged between 28.6% and 52.8%, 10.5% and 13.3%, and 36.8% and 40.2%, respectively. The concentration of lutein increased after treatment, reaching values up to 508 mg kg −1 , whereas amino acid concentrations were decreased due to nitrogen inefficiency. The biomass cultivated in anaerobically treated dairy wastewater was characterized by the higher total phenolic content; tyrosol concentration reached 20.2 mg kg −1 . CONCLUSION: Chlorella sorokiniana can efficiently remove the major pollutants from effluents of dairy industry, while the produced biomass is a source of proteins, carbohydrates and lipids. Additionally, it contains important amounts of pigments, phenolic compounds and amino acids. Further research is required for the conditions that achieve optimal biochemical characteristics of the produced biomass.

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“…Another interesting feature of this particular species is that it responds to different growth parameters by modifying its rich biochemical composition [28], which is ideal for third-generation and even fourth-generation biofuels, that are not involved in the "food vs. fuel dilemma" [35]. Both bioethanol and biodiesel production can be optimized by aiming at carbohydrate and lipid accumulation, respectively [36,37].…”

Section: Introductionmentioning

confidence: 99%

The Microalga Chlorella vulgaris as a Natural Bioenergetic System for Effective CO2 Mitigation—New Perspectives against Global Warming

2021

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In the present contribution, the differentiation in the molecular structure and function of the photosynthetic apparatus of the unicellular green alga Chlorella vulgaris was studied at several light intensities (0–400 μmol m−2 s−1) and various CO2 concentrations (0.04–60% CO2), in completely autotrophic conditions. Asymmetries that occur by different light intensities and CO2 concentrations induce metabolic and functional changes. Using chlorophyll fluorescence induction techniques (OJIP test), we showed that Chlorella vulgaris tolerates extremely high CO2 levels and converts them photosynthetically into valuable products, including O2 and biomass rich in carbohydrates and lipids. Interestingly, the microalga Chlorella vulgaris under extremely high CO2 concentrations induces a new metabolic state intensifying its photosynthetic activity. This leads to a new functional symmetry. The results highlight a potent CO2 bio-fixation mechanism of Chlorella vulgaris that captures up to 288 L CO2 L PCV−1 day−1 under optimal conditions, therefore, this microalga can be used for direct biological CO2-reducing strategies and other green biotechnological applications. All of the above suggest that Chlorella vulgaris is one of the most prominent competitors for a closed algae-powered bioreactor that is able to consume huge amounts of CO2. Thus, it is a sustainable and natural bioenergetic system with perspectives in dealing with major environmental issues such as global warming. In addition, Chlorella vulgaris cultures could also be used as bioregeneration systems in extraterrestrial missions for continuous atmospheric recycling of the human settlements, paving the way for astrobiological applications.

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Lipid and biodiesel production by cultivation isolated strain Chlorella sorokiniana pa.91 and Chlorella vulgaris in dairy wastewater treatment plant effluents

Cited by 25 publications

References 56 publications

Application of Two Indigenous Strains of Microalgal Chlorella sorokiniana in Cassava Biogas Effluent Focusing on Growth Rate, Removal Kinetics, and Harvestability

Application of Two Indigenous Strains of Microalgal Chlorella sorokiniana in Cassava Biogas Effluent Focusing on Growth Rate, Removal Kinetics, and Harvestability

Treatment of different dairy wastewater with Chlorella sorokiniana: removal of pollutants and biomass characterization

The Microalga Chlorella vulgaris as a Natural Bioenergetic System for Effective CO2 Mitigation—New Perspectives against Global Warming

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