Development of Full-Cycle Utilization of <i>Chlorella sorokiniana</i> Microalgae Biomass for Environmental and Food Purposes
The application of microalgae biomass of <i>Chlorella sorokiniana</i> as environmentally friendly biosorbents for removing potentially toxic elements (PTE) from water and as a source of biofuel has been thoroughly studied. In this paper, we investigate its physicochemical properties infr...
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MDPI AG
2020-05-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/10/2648 |
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| author | Natalia Politaeva Yulia Smyatskaya Rafat Al Afif Christoph Pfeifer Liliya Mukhametova |
| author_facet | Natalia Politaeva Yulia Smyatskaya Rafat Al Afif Christoph Pfeifer Liliya Mukhametova |
| author_sort | Natalia Politaeva |
| collection | DOAJ |
| description | The application of microalgae biomass of <i>Chlorella sorokiniana</i> as environmentally friendly biosorbents for removing potentially toxic elements (PTE) from water and as a source of biofuel has been thoroughly studied. In this paper, we investigate its physicochemical properties infrared spectroscopy (IR spectra), microstructure, adsorption properties); we have managed to isolate the lipid complex, which amounted to 20% of dry biomass. Studies of the lipid complex showed that 80.02% of lipids are unsaturated fatty acids (C18:1, C18:2, C18:3). Additionally, we have investigated the efficiency of using the residual biomass obtained after lipid extraction for water purification from rare-earth metals (REM) and PTE. To increase the sorption properties of residual biomass, its thermal modification was carried out and sorption materials based on heat-treated residual biomass and chitosan were created. The physicochemical and mechanical properties of the obtained sorption materials were studied. The total sorption capacity was 31.9 mg/g for REM and 349.7 mg/g for PTE. Moreover, we propose a new method for the disposal of spent sorbents as additional fuel. Spent sorbents can be considered to be biofuel in terms of energy content (20.7 MJ*kg<sup>−1</sup>). The results of this study provide the basis for increased use of microalgae. |
| first_indexed | 2024-03-10T19:38:55Z |
| format | Article |
| id | doaj.art-b31a3ed5467942feac55e113a392b344 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T19:38:55Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b31a3ed5467942feac55e113a392b3442023-11-20T01:28:18ZengMDPI AGEnergies1996-10732020-05-011310264810.3390/en13102648Development of Full-Cycle Utilization of <i>Chlorella sorokiniana</i> Microalgae Biomass for Environmental and Food PurposesNatalia Politaeva0Yulia Smyatskaya1Rafat Al Afif2Christoph Pfeifer3Liliya Mukhametova4Department of Institute of Civil Engineering, Peter the Great Sankt-Petersburg Polytechnic University, 194064 Saint Petersburg, RussiaDepartment of Institute of Civil Engineering, Peter the Great Sankt-Petersburg Polytechnic University, 194064 Saint Petersburg, RussiaDepartment of Material Sciences and Process, Institute of Chemical and Energy Engineering, Vienna Engineering, University of Natural Resources and Life Sciences, 1190 Vienna, AustriaDepartment of Material Sciences and Process Engineering, Vienna Institute of Chemical and Energy Engineering, University of Natural Resources and Life Sciences, 1190 Vienna, AustriaDepartment of Economics and Organization Production, Kazan State Power Engineering University, 420066 Kazan, RussiaThe application of microalgae biomass of <i>Chlorella sorokiniana</i> as environmentally friendly biosorbents for removing potentially toxic elements (PTE) from water and as a source of biofuel has been thoroughly studied. In this paper, we investigate its physicochemical properties infrared spectroscopy (IR spectra), microstructure, adsorption properties); we have managed to isolate the lipid complex, which amounted to 20% of dry biomass. Studies of the lipid complex showed that 80.02% of lipids are unsaturated fatty acids (C18:1, C18:2, C18:3). Additionally, we have investigated the efficiency of using the residual biomass obtained after lipid extraction for water purification from rare-earth metals (REM) and PTE. To increase the sorption properties of residual biomass, its thermal modification was carried out and sorption materials based on heat-treated residual biomass and chitosan were created. The physicochemical and mechanical properties of the obtained sorption materials were studied. The total sorption capacity was 31.9 mg/g for REM and 349.7 mg/g for PTE. Moreover, we propose a new method for the disposal of spent sorbents as additional fuel. Spent sorbents can be considered to be biofuel in terms of energy content (20.7 MJ*kg<sup>−1</sup>). The results of this study provide the basis for increased use of microalgae.https://www.mdpi.com/1996-1073/13/10/2648microalgaesorbentswater purificationREMPTElipids |
| spellingShingle | Natalia Politaeva Yulia Smyatskaya Rafat Al Afif Christoph Pfeifer Liliya Mukhametova Development of Full-Cycle Utilization of <i>Chlorella sorokiniana</i> Microalgae Biomass for Environmental and Food Purposes Energies microalgae sorbents water purification REM PTE lipids |
| title | Development of Full-Cycle Utilization of <i>Chlorella sorokiniana</i> Microalgae Biomass for Environmental and Food Purposes |
| title_full | Development of Full-Cycle Utilization of <i>Chlorella sorokiniana</i> Microalgae Biomass for Environmental and Food Purposes |
| title_fullStr | Development of Full-Cycle Utilization of <i>Chlorella sorokiniana</i> Microalgae Biomass for Environmental and Food Purposes |
| title_full_unstemmed | Development of Full-Cycle Utilization of <i>Chlorella sorokiniana</i> Microalgae Biomass for Environmental and Food Purposes |
| title_short | Development of Full-Cycle Utilization of <i>Chlorella sorokiniana</i> Microalgae Biomass for Environmental and Food Purposes |
| title_sort | development of full cycle utilization of i chlorella sorokiniana i microalgae biomass for environmental and food purposes |
| topic | microalgae sorbents water purification REM PTE lipids |
| url | https://www.mdpi.com/1996-1073/13/10/2648 |
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