1
|
Terra de Oliveira D, de Jesus Paiva R, Albuquerque de Mescouto V, Ferreira da Silva SR, Farias Da Costa AA, Santos AV, Gonçalves EC, Narciso da Rocha Filho G, Rodrigues Noronha RC, Santos do Nascimento LA. The potential of third-generation biodiesel from Tolypothrix sp. CACIAM22 as a feedstock. Heliyon 2024; 10:e36343. [PMID: 39258198 PMCID: PMC11385769 DOI: 10.1016/j.heliyon.2024.e36343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 08/13/2024] [Accepted: 08/13/2024] [Indexed: 09/12/2024] Open
Abstract
Renewable energy has been recognized as an alternative to fossil fuels as a step to transform the energy produced and consumed worldwide. Cyanobacteria and microalgae are currently being considered as substitutes to the traditional feedstock used to produce biofuels due to their ability to achieve high amounts of lipids under cellular stress conditions. The aim of this study was to investigate the utilization of Tolypothrix sp. CACIAM 22 cyanobacterial biomass as a feedstock for biodiesel production, specifically by examining the effects of supplementing with hydrolysate of Brazil nutshell (HBNS) on biomass generation, lipid production, fatty acid composition, and quality of synthesized biodiesel. The supplementation of HBNS led to a significant increase of 12g.L-1 in wet biomass production. The lipid content reached 41 % of the biomass produced in HBNS supplemented cultures when nitrate source was deprived. The quality evaluation of cyanobacteria-derived biodiesel was performed using Biodiesel Analyzer ver 2.2 software, revealing superior quality compared to biodiesel produced from plant sources. The biodiesel exhibited values of 23 h for oxidative stability, 65 for cetane number, and an iodine index of 31 (g I2. 100 g-1 fat), indicating promising potential as a renewable source. This study is the first to utilize HBNS as an organic supplement for cyanobacteria culture medium and assess its impact on biomass and lipid production in Tolypothrix sp., supporting the hypothesis of utilizing this biomass as a renewable feedstock for biodiesel production as a viable alternative to plant sources based on biomass production, lipid productivity, and biodiesel quality.
Collapse
Affiliation(s)
- Deborah Terra de Oliveira
- Amazon Oil Laboratory, Guamá Science and Technology Park, Belém, 66075-750, Brazil
- Graduation Program of Biotechnology, Institute of Biological Sciences, Federal University of Pará, Belém, 66075-110, Brazil
| | - Rutiléia de Jesus Paiva
- Amazon Oil Laboratory, Guamá Science and Technology Park, Belém, 66075-750, Brazil
- Graduation Program of Biotechnology, Institute of Biological Sciences, Federal University of Pará, Belém, 66075-110, Brazil
| | - Vanessa Albuquerque de Mescouto
- Amazon Oil Laboratory, Guamá Science and Technology Park, Belém, 66075-750, Brazil
- Graduation Program of Biotechnology, Institute of Biological Sciences, Federal University of Pará, Belém, 66075-110, Brazil
| | | | | | - Agenor Valadares Santos
- Graduation Program of Biotechnology, Institute of Biological Sciences, Federal University of Pará, Belém, 66075-110, Brazil
| | - Evonnildo Costa Gonçalves
- Graduation Program of Biotechnology, Institute of Biological Sciences, Federal University of Pará, Belém, 66075-110, Brazil
| | | | - Renata Coelho Rodrigues Noronha
- Laboratory of Genetics and Cell Biology, Center for Advanced Studies of Biodiversity, Institute of Biological Sciences, Federal University of Pará, Augusto Corrêa Street, Guamá, Belém, 66075-110, PA, Brazil
| | - Luís Adriano Santos do Nascimento
- Amazon Oil Laboratory, Guamá Science and Technology Park, Belém, 66075-750, Brazil
- Graduation Program of Biotechnology, Institute of Biological Sciences, Federal University of Pará, Belém, 66075-110, Brazil
| |
Collapse
|
2
|
Helamieh M, Reich M, Rohne P, Riebesell U, Kerner M, Kümmerer K. Impact of green and blue-green light on the growth, pigment concentration, and fatty acid unsaturation in the microalga Monoraphidium braunii. Photochem Photobiol 2024; 100:587-595. [PMID: 37882377 DOI: 10.1111/php.13873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 10/04/2023] [Accepted: 10/04/2023] [Indexed: 10/27/2023]
Abstract
The spectral composition of light is an important factor for the metabolism of photosynthetic organisms. Several blue light-regulated metabolic processes have already been identified in the industrially relevant microalga Monoraphidium braunii. However, little is known about the spectral impact on this species' growth, fatty acid (FA), and pigment composition. In this study, M. braunii was cultivated under different light spectra (white light: 400-700 nm, blue light: 400-550 nm, green light: 450-600 nm, and red light: 580-700 nm) at 25°C for 96 h. The growth was monitored daily. Additionally, the FA composition, and pigment concentration was analyzed after 96 h. The highest biomass production was observed upon white light and red light irradiation. However, green light also led to comparably high biomass production, fueling the scientific debate about the contribution of weakly absorbed light wavelengths to microalgal biomass production. All light spectra (white, blue, and green) that comprised blue-green light (450-550 nm) led to a higher degree of FA unsaturation and a greater concentration of all identified pigments than red light. These results further contribute to the growing understanding that blue-green light is an essential trigger for maximized pigment concentration and FA unsaturation in green microalgae.
Collapse
Affiliation(s)
- Mark Helamieh
- Institute of Sustainable Chemistry, Leuphana University of Lueneburg, Lueneburg, Germany
- Strategic Science Consult Ltd., Hamburg, Germany
| | - Marco Reich
- Institute of Sustainable Chemistry, Leuphana University of Lueneburg, Lueneburg, Germany
| | - Philipp Rohne
- Institute of Pharmacy and Biochemistry, Therapeutical Life Sciences, Johannes Gutenberg-University Mainz, Mainz, Germany
| | - Ulf Riebesell
- GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
| | | | - Klaus Kümmerer
- Institute of Sustainable Chemistry, Leuphana University of Lueneburg, Lueneburg, Germany
| |
Collapse
|
3
|
Alam SN, Singh B, Guldhe A, Raghuvanshi S, Sangwan KS. Sustainable valorization of macroalgae residual biomass, optimization of pyrolysis parameters and life cycle assessment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 919:170797. [PMID: 38342457 DOI: 10.1016/j.scitotenv.2024.170797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 02/02/2024] [Accepted: 02/06/2024] [Indexed: 02/13/2024]
Abstract
The major challenges for the current climate change issue are an increase in global energy demand, a limited supply of fossil fuels, and increasing carbon footprints from fossil fuels, which have necessitated the exploration of sustainable alternatives to fossil fuels. Biorefineries offer a promising path to sustainable fuel production, converting biomass into biofuels using diverse technologies. Aquatic biomass, such as macroalgae in this context, represents an abundant and renewable biomass resource that can be cultivated from water bodies without competing with traditional agricultural land. Despite this, the potential of macroalgae for biofuel production remains largely untapped, with very limited studies addressing their viability and efficiency. This study investigates the efficient conversion of unexplored macroalgae biomass through a biorefinery process that involves lipid extraction to produce biodiesel, along with the production of biochar and bio-oil from the pyrolysis of residual biomass. To improve the effectiveness and overall performance of the pyrolysis system, Response Surface Methodology (RSM) was utilized through a Box-Behnken design to systematically investigate how alterations in temperature, reaction time, and catalyst concentration influence the production of bio-oil and biochar to maximize their yields. The results showed the highest bio-oil yield achieved to be 36 %, while the highest biochar yield reached 45 %. The integration of Life Cycle Assessment (LCA) in the study helps to assess carbon emission and environmental burdens and identify potential areas for optimization, such as resource efficiency, waste management, and energy utilization. The LCA results contribute to the identification of potential environmental hotspots and guide the development of strategies to optimize the overall sustainability of the biofuel production process. The LCA results indicate that the solvent (chloroform) used in transesterification contributes significantly to greenhouse gas emissions and climate change impacts. Therefore, it is crucial to explore alternative, safe solvents that can mitigate the environmental impacts of transesterification.
Collapse
Affiliation(s)
- Shahrukh Nawaj Alam
- Department of Environmental Sciences, Central University of Jharkhand, Cheri-Manatu, Ranchi 835 222, India
| | - Bhaskar Singh
- Department of Environmental Sciences, Central University of Jharkhand, Cheri-Manatu, Ranchi 835 222, India.
| | - Abhishek Guldhe
- Amity Institute of Biotechnology, Amity University Maharashtra, Mumbai 410206, India.
| | - Smita Raghuvanshi
- Department of Chemical Engineering, Birla Institute of Technology and Science (BITS) Pilani, Rajasthan, India
| | - Kuldip Singh Sangwan
- Department of Mechanical Engineering, Birla Institute of Technology and Science (BITS) Pilani, Rajasthan, India
| |
Collapse
|
4
|
Chaos-Hernández D, Reynel-Ávila HE, Bonilla-Petriciolet A, Villalobos-Delgado FJ. Extraction methods of algae oils for the production of third generation biofuels - A review. CHEMOSPHERE 2023; 341:139856. [PMID: 37598949 DOI: 10.1016/j.chemosphere.2023.139856] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/19/2023] [Accepted: 08/15/2023] [Indexed: 08/22/2023]
Abstract
Microalgae are the main source of third-generation biofuels because they have a lipid content of 20-70%, can be abundantly produced and do not compete in the food market besides other benefits. Biofuel production from microalgae is a promising option to contribute for the resolution of the eminent crisis of fossil energy and environmental pollution specially in the transporting sector. The choice of lipid extraction method is of relevance and associated to the algae morphology (i.e., rigid cells). Therefore, it is essential to develop suitable extraction technologies for economically viable and environment-friendly lipid recovery processes with the aim of achieving a commercial production of biofuels from this biomass. This review presents an exhaustive analysis and discussion of different methods and processes of lipid extraction from microalgae for the subsequent conversion to biodiesel. Physical methods based on the use of supercritical fluids, ultrasound and microwaves were reviewed. Chemical methods using solvents with different polarities, aside from mechanical techniques such as mechanical pressure and enzymatic methods, were also analyzed. The advantages, drawbacks, challenges and future prospects of lipid extraction methods from microalgae have been summarized to provide a wide panorama of this relevant topic for the production of economic and sustainable energy worldwide.
Collapse
Affiliation(s)
- D Chaos-Hernández
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico
| | - H E Reynel-Ávila
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico; CONACYT, Av. Insurgentes 1582 Sur, Ciudad de México, 03940, Aguascalientes, Ags, Mexico.
| | - A Bonilla-Petriciolet
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico
| | - F J Villalobos-Delgado
- Instituto Tecnológico de Aguascalientes, Av. Adolfo López Mateos #1801, Aguascalientes, Ags., C.P. 20256, Mexico
| |
Collapse
|
5
|
Korozi E, Kefalogianni I, Tsagou V, Chatzipavlidis I, Markou G, Karnaouri A. Evaluation of Growth and Production of High-Value-Added Metabolites in Scenedesmus quadricauda and Chlorella vulgaris Grown on Crude Glycerol under Heterotrophic and Mixotrophic Conditions Using Monochromatic Light-Emitting Diodes (LEDs). Foods 2023; 12:3068. [PMID: 37628067 PMCID: PMC10453295 DOI: 10.3390/foods12163068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/11/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023] Open
Abstract
This study aimed to examine the impact of crude glycerol as the main carbon source on the growth, cell morphology, and production of high-value-added metabolites of two microalgal species, namely Chlorella vulgaris and Scenedesmus quadricauda, under heterotrophic and mixotrophic conditions, using monochromatic illumination from light-emitting diodes (LEDs) emitting blue, red, yellow, and white (control) light. The findings indicated that both microalgae strains exhibited higher biomass yield on the mixotrophic growth system when compared to the heterotrophic one, while S. quadricauda generally performed better than C. vulgaris. In mixotrophic mode, the use of different monochromatic illumination affected biomass production differently on both strains. In S. quadricauda, growth rate was higher under red light (μmax = 0.89 d-1), while the highest biomass concentration and yield per gram of consumed glycerol were achieved under yellow light, reaching 1.86 g/L and Yx/s = 0.18, respectively. On the other hand, C. vulgaris demonstrated a higher growth rate on blue light (μmax = 0.45 d-1) and a higher biomass production on white (control) lighting (1.34 g/L). Regarding the production of metabolites, higher yields were achieved during mixotrophic mode in both strains. In C. vulgaris, the highest lipid (26.5% of dry cell weight), protein (63%), and carbohydrate (20.3%) contents were obtained under blue, red, and yellow light, respectively, thus indicating that different light wavelengths probably activate different metabolic pathways. Similar results were obtained for S. quadricauda with red light leading to higher lipid content, while white lighting caused higher production of proteins and carbohydrates. Overall, the study demonstrated the potential of utilizing crude glycerol as a carbon source for the growth and metabolite production of microalgae and, furthermore, revealed that the strains' behavior varied depending on lighting conditions.
Collapse
Affiliation(s)
- Evagelina Korozi
- Laboratory of General and Agricultural Microbiology, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece; (E.K.); (I.K.); (V.T.); (I.C.)
| | - Io Kefalogianni
- Laboratory of General and Agricultural Microbiology, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece; (E.K.); (I.K.); (V.T.); (I.C.)
| | - Vasiliki Tsagou
- Laboratory of General and Agricultural Microbiology, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece; (E.K.); (I.K.); (V.T.); (I.C.)
| | - Iordanis Chatzipavlidis
- Laboratory of General and Agricultural Microbiology, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece; (E.K.); (I.K.); (V.T.); (I.C.)
| | - Giorgos Markou
- Laboratory of Food Biotechnology and Recycling of Agricultural By-Products, Institute of Technology of Agricultural Products, Hellenic Agricultural Organization-Demeter, Leof. Sofokli Venizelou 1, Lykovrysi, 14123 Athens, Greece
| | - Anthi Karnaouri
- Laboratory of General and Agricultural Microbiology, Department of Crop Science, Agricultural University of Athens, Iera Odos 75, 11855 Athens, Greece; (E.K.); (I.K.); (V.T.); (I.C.)
| |
Collapse
|
6
|
Maximizing Nitrogen Removal and Lipid Production by Microalgae under Mixotrophic Growth Using Response Surface Methodology: Towards Enhanced Biodiesel Production. FERMENTATION-BASEL 2022. [DOI: 10.3390/fermentation8120682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The present study aimed to optimize synthetic wastewater composition as a mixotrophic medium for enhanced growth and lipid accumulation coupled with high nitrogen removal by the green microalga Chlorella sp. Individual effects of the three main independent variables (nitrate concentration, seawater ratio, and glycerol supplementation) were tested initially, then response surface methodology (RSM) was subsequently performed to explore the optimum combined conditions. The highest lipid productivity of 37.60 mg/L day was recorded at 25% seawater. Glycerol supplementation enhanced both lipid content and biomass production, which resulted in the highest recorded lipid productivity of 42.61 mg/L day at 4 g/L glycerol. Central composite design followed by numerical optimization was further applied which suggested NaNO3 concentration at 101.5 mg/L, seawater ration of 23.8%, and glycerol supplementation of 0.25 g/L as the optimum conditions for dual maximum lipid productivity and nitrogen removal of 46.9 mg/L day and 98.0%, respectively. Under the optimized conditions, dry weight and lipid content increased by 31.9% and 20.3%, respectively, over the control, which resulted in increase in lipid productivity by 71.5%. In addition, optimization process resulted in pronounced changes in fatty acid proportions where saturated fatty acids increased by 7.4% in the optimized culture with simultaneous reduction of polyunsaturated fatty acids. The estimated biodiesel characteristics calculated from the fatty acid methyl ester (FAMEs) profile showed agreement with the international standards, while optimized cultures showed an 8.5% lower degree of unsaturation, which resulted in higher cetane numbers and lower iodine values. This study provides economical approach for optimization and efficient nutrient recycling through cultivation of Chlorella sp. for further enhanced biodiesel production.
Collapse
|
7
|
Almutairi AW. Full utilization of marine microalgal hydrothermal liquefaction liquid products through a closed-loop route: towards enhanced bio-oil production and zero-waste approach. 3 Biotech 2022; 12:209. [PMID: 35935543 PMCID: PMC9352824 DOI: 10.1007/s13205-022-03262-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/17/2022] [Indexed: 11/01/2022] Open
Abstract
The present study aimed to evaluate the potential of aqueous phase after hydrothermal liquefaction of microalgae (Aq-P), enriched with seawater, as a growth medium coupled with crude bio-oil production by the halophyte Dunaliella salina. Results showed that Aq-P showed higher content of total organic carbon (TOC) and total nitrogen (10.24, and 5.11 g L-1, respectively), while seawater showed higher anions and cations content. At the 12th day of microalgae incubation, the Aq-P growth medium showed 15.9% higher dry weight than the control (f/2 medium), with enhanced lipid content by 21.2% over the control, and 5.7% significant reduction in carbohydrates. The bio-oil yields of microalgal biomass cultivated in f/2 and Aq-P were 28.74% and 29.54%, respectively. Using Aq-P enhanced the fatty acids/esters and hydrocarbons in the crude bio-oil by 12.6% and 1.7 times, respectively, comparing to f/2-derived bio-oil. However, nitrogen-containing compounds in the Aq-P-derived bio-oil reduced by 60.7% comparing to f/2 medium. Interestingly, diesel carbon-range represented the majority of the products in both f/2- and Aq-P-derived bio-oil (69.1% and 78.3%, respectively). The findings of the present study provide a new approach for development of sustainable microalgal cultivation system for crude bio-oil production through a closed-loop route using Aq-P and seawater.
Collapse
Affiliation(s)
- Adel W. Almutairi
- Biological Sciences Department, Faculty of Science and Arts, King Abdulaziz University, Rabigh, Saudi Arabia
| |
Collapse
|
8
|
Agarwalla A, Mishra S, Mohanty K. Treatment and recycle of harvested microalgal effluent using powdered activated carbon for reducing water footprint and enhancing biofuel production under a biorefinery model. BIORESOURCE TECHNOLOGY 2022; 360:127598. [PMID: 35820557 DOI: 10.1016/j.biortech.2022.127598] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 06/15/2023]
Abstract
In this study, the suitability of cultivating Monoraphidium sp. KMC4 was exhibited in different effluent based culture (EBC) media concentrations, the latter being treated with powdered activated carbon (PAC) with a loading of 5-50 mg L-1. The optimum EBC media treated with 30 mg L-1 PAC enhanced the biomass yield by 21.9% as compared to the untreated one (1.21 g L-1). A recyclability study performed in five batches resulted in an optimal growth up to three batches with an overall biomass yield of 4.21 g and a total water savings of 30%. Additionally, physico-chemical characterization and FAME profile of the biomass from the recyclability study validated feedstock's energy potential. Moreover, this study proposes a biorefinery model which could recover nutrient rich liquid effluent (3.1 million litres) and solid residue for various applications along with the generation of 5760 kg of biomass followed by 113 L d-1 biodiesel yield.
Collapse
Affiliation(s)
- Ankit Agarwalla
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sanjeev Mishra
- School of Energy Science and Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Kaustubha Mohanty
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India; School of Energy Science and Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| |
Collapse
|
9
|
Tan FHP, Nadir N, Sudesh K. Microalgal Biomass as Feedstock for Bacterial Production of PHA: Advances and Future Prospects. Front Bioeng Biotechnol 2022; 10:879476. [PMID: 35646848 PMCID: PMC9133917 DOI: 10.3389/fbioe.2022.879476] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 04/06/2022] [Indexed: 11/13/2022] Open
Abstract
The search for biodegradable plastics has become the focus in combating the global plastic pollution crisis. Polyhydroxyalkanoates (PHAs) are renewable substitutes to petroleum-based plastics with the ability to completely mineralize in soil, compost, and marine environments. The preferred choice of PHA synthesis is from bacteria or archaea. However, microbial production of PHAs faces a major drawback due to high production costs attributed to the high price of organic substrates as compared to synthetic plastics. As such, microalgal biomass presents a low-cost solution as feedstock for PHA synthesis. Photoautotrophic microalgae are ubiquitous in our ecosystem and thrive from utilizing easily accessible light, carbon dioxide and inorganic nutrients. Biomass production from microalgae offers advantages that include high yields, effective carbon dioxide capture, efficient treatment of effluents and the usage of infertile land. Nevertheless, the success of large-scale PHA synthesis using microalgal biomass faces constraints that encompass the entire flow of the microalgal biomass production, i.e., from molecular aspects of the microalgae to cultivation conditions to harvesting and drying microalgal biomass along with the conversion of the biomass into PHA. This review discusses approaches such as optimization of growth conditions, improvement of the microalgal biomass manufacturing technologies as well as the genetic engineering of both microalgae and PHA-producing bacteria with the purpose of refining PHA production from microalgal biomass.
Collapse
Affiliation(s)
| | | | - Kumar Sudesh
- School of Biological Sciences, Universiti Sains Malaysia, Penang, Malaysia
| |
Collapse
|
10
|
Cultivation of Microalgae in Unsterile Malting Effluent for Biomass Production and Lipid Productivity Improvement. FERMENTATION 2022. [DOI: 10.3390/fermentation8040186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Microalgae have the potential to grow in nutrient-rich environments and have the ability to accumulate nutrients from wastewater. The nutrients in malting wastewater are ideal for microalgae cultivation. However, there is limited published work on the growth characteristics of freshwater microalgae grown in malting effluent. This study examined the potential of diluted malting effluent for the growth of freshwater green algae Chlorella sp. and Chlamydomonas sp. isolated from northern Ontario and subsequent biomass and lipid production. Under the 18:6 h light/dark cultivation cycle, the highest cell number counted (540 × 104 cell·mL−1 on day 20) and total chlorophyll content were found in 50% diluted malting effluents for Chlorella sp., whereas the 70% dilution concentration was the most productive for Chlamydomonas (386 × 104 cell·mL−1 on day 16). The total lipid content was higher in the 50% dilution concentration of malting effluent in both Chlorella sp. (maximum 20.5%–minimum 11.5% of dry weight) and Chlamydomonas sp. (max 39.3%–min 25.9% of dry weight). These results emphasize the suitability of using unsterile diluted malting effluent for microalgae cultivation.
Collapse
|
11
|
Li M, Alotaibi MKH, Li L, Abomohra AEF. Enhanced waste glycerol recycling by yeast for efficient biodiesel production: Towards waste biorefinery. BIOMASS AND BIOENERGY 2022; 159:106410. [DOI: 10.1016/j.biombioe.2022.106410] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
12
|
The Effect of Trophic Modes on Biomass and Lipid Production of Five Microalgal Strains. WATER 2022. [DOI: 10.3390/w14020240] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Five microalgae strains, namely Isochrysis galbana, Microchloropsis gaditana, Scenedesmus obliquus, Nannochloropsis oculata and Tetraselmis suecica, were selected as potential candidates for polyunsaturated fatty acids’ production, evaluating biomass productivity and their capacity to accumulate high lipid contents under different trophic modes. Microalgae strains were cultivated in the presence of 1% glucose using mixotrophic and heterotrophic conditions, while autotrophic cultures served as control experiments. The results demonstrate that S. obliquus performed the highest biomass productivity that reached 0.13 and 0.14 g L−1 d−1 under mixotrophic and heterotrophic conditions, respectively. I. galbana and S. obliquus utilized elevated contents of glucose in mixotrophy, removing 55.9% and 95.6% of the initial concentration of the carbohydrate, respectively, while glucose consumption by the aforementioned strains also remained high under heterotrophic cultivation. The production of lipids was maximal for I. galbana in mixotrophy and S. obliquus in heterotrophy, performing lipid productivities of 24.85 and 22.77 mg L−1 d−1, respectively. The most abundant saturated acid detected for all microalgae strains evaluated was palmitic acid (C16:0), while oleic and linolenic acids (C18:1n9c/C18:3n3) comprised the most abundant unsaturated fatty acids. I. galbana performed the highest linoleic acid (C18:2n6c) content under heterotrophic nutrition, which reached 87.9 mg g−1 of ash-free dry weight. Among the microalgae strains compared, the biomass and lipid production monitored for I. galbana and S. obliquus confirm that both strains could serve as efficient bioproducers for application in algal biorefineries.
Collapse
|
13
|
Elsayed M, Tawfik A, Abomohra AEF. Energy Recovery from Fat, Oil and Grease (FOG). WASTE-TO-ENERGY 2022:309-327. [DOI: 10.1007/978-3-030-91570-4_10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
|
14
|
Cheng J, Fan W, Zheng L. Development of a mixotrophic cultivation strategy for simultaneous improvement of biomass and photosynthetic efficiency in freshwater microalga Scenedesmus obliquus by adding appropriate concentration of sodium acetate. Biochem Eng J 2021. [DOI: 10.1016/j.bej.2021.108177] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
15
|
Almutairi AW, Al-Hasawi ZM, Abomohra AEF. Valorization of lipidic food waste for enhanced biodiesel recovery through two-step conversion: A novel microalgae-integrated approach. BIORESOURCE TECHNOLOGY 2021; 342:125966. [PMID: 34562712 DOI: 10.1016/j.biortech.2021.125966] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/12/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
The present study designed an innovative route for two-step biodiesel recovery from lipidic food waste followed by microalgae cultivation. Optimization of oil conversion showed the highest fatty acid methyl esters (FAMEs) recovery of 92.6% (lipid basis). Microalgal lipid accumulation enhanced by the increased lipid-free waste hydrolysate ratio in the medium, where the maximum lipid content of 26.2 dw% was recorded using 50% hydrolysate. Application of 30% hydrolysate ratio resulted in the maximum recorded lipid productivity, which was 99.4% higher than that of the control and insignificant with 40% hydrolysate. Waste oil-derived FAMEs showed 69.0% higher saturated fatty acids (SFAs) proportion than that of algal lipids. In contrast, the highest polyunsaturated fatty acids (PUFAs) proportion (48.8% of total fatty acids) was recorded in microalgal lipids. The study concluded that mixing microalgal lipids with waste oil (1:1, w/w) provides a desirable practical route for enhanced biodiesel production complying with the international standards.
Collapse
Affiliation(s)
- Adel W Almutairi
- Biological Sciences Department, Faculty of Science & Arts, King Abdulaziz University, Rabigh, Saudi Arabia.
| | - Zaki M Al-Hasawi
- Biological Sciences Department, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Abd El-Fatah Abomohra
- New Energy and Environmental Laboratory (NEEL), School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, PR China; Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| |
Collapse
|
16
|
Musetsho P, Renuka N, Guldhe A, Singh P, Pillay K, Rawat I, Bux F. Valorization of poultry litter using Acutodesmus obliquus and its integrated application for lipids and fertilizer production. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 796:149018. [PMID: 34274677 DOI: 10.1016/j.scitotenv.2021.149018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 07/08/2021] [Accepted: 07/09/2021] [Indexed: 06/13/2023]
Abstract
Microalgae are recognized as potential candidates for resource recovery from wastewater and projected for biorefinery models. This study was undertaken to evaluate the potential of poultry litter and municipal wastewater as nutrient and water sources, for the cultivation of Acutodesmus obliquus for lipids production for biodiesel application. The efficacy of lipid extracted biomass (LEA) as fertilizer for mung bean crops was also assessed in microcosm. A. obliquus cultivation in acid pre-treated poultry litter extract (PPLE) showed maximum biomass production of 1.90 g L-1, which was 74.67% and 12.61% higher than the raw poultry litter extract (RPPE) and BG11 respectively. Higher NO3-N, NH3-N, and PO4-P removal of 79.51%, 81.82%, and 80.52% respectively were observed in PPLE as compared to RPLE treatment. The highest biomass (140.36 mg L-1 d-1), lipids (38.49 mg L-1 d-1), and carbohydrates (49.55 mg L-1 d-1) productivities were observed in the PPLE medium. The application of LEA as a fertilizer for mung bean crops showed improvement in plant growth and soil microbial activity. A maximum increase in organic carbon (59.5%) and dehydrogenase activity (130.8%) was observed in LEA amended soil which was significantly higher than chemical fertilizer (CF) control in 30 days. Whilst plant fresh weight and leaf chlorophyll in the LEA amended soil was comparable to whole algal biomass (WA) and CF control. The strategy developed could be a basis for sustainable biorefinery for the valorization of wastewater for the production of microalgae-derived biofuel and byproducts for agricultural application.
Collapse
Affiliation(s)
- Pfano Musetsho
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa
| | - Nirmal Renuka
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa
| | - Abhishek Guldhe
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa; Amity Institute of Biotechnology, Amity University, Mumbai 410206, India
| | - Poonam Singh
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa
| | - Kriveshin Pillay
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa
| | - Ismail Rawat
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa
| | - Faizal Bux
- Institute for Water and Wastewater Technology, Durban University of Technology, PO Box 1334, Durban 4000, South Africa.
| |
Collapse
|
17
|
Ummalyma SB, Sahoo D, Pandey A. Resource recovery through bioremediation of wastewaters and waste carbon by microalgae: a circular bioeconomy approach. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:58837-58856. [PMID: 33527238 DOI: 10.1007/s11356-020-11645-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 11/11/2020] [Indexed: 05/05/2023]
Abstract
Microalgal biomass-based biofuels are a promising alternative to fossil fuels. Microalgal biofuels' major obstacles are the water and carbon sources for their cultivation and biomass harvest from the liquid medium. To date, an economically viable process is not available for algal based biofuels. The circular bioeconomy is an attractive concept for reuse, reduce, and recycle resources. The recovery of nutrients from waste and effluents by microalgae could significantly impact the escalating demands of energy and nutraceutical source to the growing population. Wastewaters from different sources are enriched with nutrients and carbon, and these resources can be recovered and utilized for the circular bioeconomy approach. However, the utilization of wastewaters and waste seems to be an essential strategy for mass cultivation of microalgae to minimizing freshwater consumption, carbon, nutrients cost, nitrogen, phosphorus removal, and other pollutants loads from wastewater and generating sustainable biomass for value addition for either biofuels or other chemicals. Hence, the amalgamation of wastewater treatment with the mass cultivation of microalgae improved the conventional treatment process and environmental impacts. This review provides complete information on the latest progress and developments of microalgae as potential biocatalyst for the remediation of wastewaters and waste carbon to recover resources through biomass with metabolites for various industrial applications and large-scale cultivation in wastewaters, and future perspectives are discussed.
Collapse
Affiliation(s)
- Sabeela Beevi Ummalyma
- DBT-Institute of Bioresources and Sustainable Development (IBSD) (An Autonomous Institute under Department of Biotechnology, Govt. of India), Takyelpat, Imphal, 795001, India.
| | | | - Ashok Pandey
- Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicological Research, Lucknow, 226001, India
| |
Collapse
|
18
|
Potential Applications of Arthrospira platensis Lipid-Free Biomass in Bioremediation of Organic Dye from Industrial Textile Effluents and Its Influence on Marine Rotifer ( Brachionus plicatilis). MATERIALS 2021; 14:ma14164446. [PMID: 34442968 PMCID: PMC8400522 DOI: 10.3390/ma14164446] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/29/2021] [Accepted: 08/02/2021] [Indexed: 11/21/2022]
Abstract
Arthrospira platensis is one of the most important cultured microalgal species in the world. Arthrospira complete dry biomass (ACDB) has been reported as an interesting feedstock for many industries, including biodiesel production. The A. platensis by-product of biodiesel production (lipid-free biomass; LFB) is a source of proteins, functional molecules, and carbohydrates, and can also be reused in several applications. The current study investigated the efficiency of ACDB and LFB in bioremediation of dye (Ismate violet 2R, IV2R) from textile effluents. In addition, the potential of ACDB and LFB loaded by IV2R as a feed for Rotifer, Brachionus plicatilis, was examined. The surface of the adsorbents was characterized by SEM, FTIR, and Raman analysis to understand the adsorption mechanism. The batch sorption method was examined as a function of adsorbent dose (0.02–0.01 g L−1), solution initial concentration (10–100 mg L−1), pH (2–10), and contact time (15–180 min). The kinetic studies and adsorption isotherm models (Freundlich, Langmuir, Tempkin, and Halsey) were used to describe the interaction between dye and adsorbents. The results concluded that the adsorption process increased with increasing ACDB and LFB dose, contact time (120 min), initial IV2R concentration (10 mg L−1), and acidity pH (2 and 6, respectively). For the elimination of industrial textile wastewater, the ACDB and LFB sorbents have good elimination ability of a dye solution by 75.7% and 61.11%, respectively. The kinetic interaction between dye and adsorbents fitted well to Langmuir, Freundlish, and Halsey models for LFB, and Langmuir for ACDB at optimum conditions with R2 > 0.9. In addition, based on the bioassay study, the ACDB and LFB loaded by IV2R up to 0.02 g L−1 may be used as feed for the marine Rotifer B. plicatilis.
Collapse
|
19
|
Huang JJ, Cheung PCK. Cold stress treatment enhances production of metabolites and biodiesel feedstock in Porphyridium cruentum via adjustment of cell membrane fluidity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 780:146612. [PMID: 34030318 DOI: 10.1016/j.scitotenv.2021.146612] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/04/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
Porphyridium cruentum, a cell-wall-free marine Rhodophyta microalga was cultured under a 5-day cold stress at 0 °C and 15 °C, after reaching the late logarithmic growth phase. Compared with the control at 25 °C, the cold stress treatment significantly (p < 0.05) increased the microalgal biomass (1.21-fold); the amounts of total polyunsaturated fatty acids (1.22-fold); individual fatty acids including linoleic acid (1.50-fold) and eicosatrienoic acid (1.85-fold), and a major carotenoid zeaxanthin (1.53-fold). Furthermore, production of biodiesel feedstock including total C16 + C18 fatty acids was significantly enhanced (p < 0.05) by 1.18-fold after the cold stress treatment. Principal component analysis further indicated that the biosynthetic pathways of fatty acids and carotenoids in this microalga were correlated with the cold stress treatment. These results suggested that P. cruentum had adjusted its cellular membrane fluidity via an 'arm-raising and screw-bolt fastening' mechanism mediated by the synergistic roles of cis-unsaturated fatty acids and carotenoids. The insight obtained from the responses to cold stress in P. cruentum could be a novel technological approach to enhance the production of microalgal metabolites and biodiesel feedstock.
Collapse
Affiliation(s)
- Jim Junhui Huang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, No. 100, Waihuan West Road, Guangzhou Higher Education Mega Center, Guangzhou 510006, Guangdong Province, People's Republic of China; Food and Nutritional Sciences Programme, School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong S.A.R., People's Republic of China; Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, Singapore 117411, Republic of Singapore; Marine Biology Institute, Shantou University, Shantou 515063, Guangdong Province, People's Republic of China
| | - Peter Chi Keung Cheung
- Food and Nutritional Sciences Programme, School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong S.A.R., People's Republic of China.
| |
Collapse
|
20
|
Helamieh M, Gebhardt A, Reich M, Kuhn F, Kerner M, Kümmerer K. Growth and fatty acid composition of Acutodesmus obliquus under different light spectra and temperatures. Lipids 2021; 56:485-498. [PMID: 34173670 DOI: 10.1002/lipd.12316] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 06/01/2021] [Accepted: 06/09/2021] [Indexed: 11/10/2022]
Abstract
The combined impact of temperature and light spectra on the fatty acid (FA) composition in microalgae has been sparsely investigated. The aim of this study was to investigate the interactions of light and temperature on the FA composition in Acutodesmus obliquus. For this purpose, A. obliquus was cultivated with different temperatures (20, 30, and 35°C), as well as broad light spectra (blue, green, and red light). Growth and FA composition were monitored daily. Microalgal FA were extracted, and a qualitative characterization was done by gas chromatography coupled with electron impact ionization mass spectrometry (GC-EI/MS). Compared to red light, green and blue light caused a higher percentage of the polyunsaturated fatty acids (PUFA) 16:4, 18:3, and 18:4, at all temperatures. The highest total percentage of these PUFA were observed at the lowest cultivation temperature and blue and green light. These data imply that a combination of lower temperatures and blue-green light (450-550 nm) positively influences the activity of specific FA-desaturases in A. obliquus. Additionally, a lower 16:1 trans/cis ratio was observed upon green and blue light treatment and lower cultivation temperatures. Remarkably, green light treatment resulted in a comparably high growth under all tested conditions. Therefore, a higher content of green light, compared to blue light might additionally lead to a higher biomass concentration. Microalgae cultivation with low temperatures and green light might therefore result in a suitable FA composition for the food industry and a comparably high biomass production.
Collapse
Affiliation(s)
- Mark Helamieh
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Lüneburg, Germany.,Strategic Science Consult Ltd., Hamburg, Germany
| | | | - Marco Reich
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Lüneburg, Germany
| | - Friedericke Kuhn
- Institute of Experimental Business Psychology, Leuphana University of Lüneburg, Lüneburg, Germany
| | | | - Klaus Kümmerer
- Institute of Sustainable and Environmental Chemistry, Leuphana University of Lüneburg, Lüneburg, Germany
| |
Collapse
|
21
|
Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective. SUSTAINABILITY 2021. [DOI: 10.3390/su13126962] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Managing the concentration of atmospheric CO2 requires a multifaceted engineering strategy, which remains a highly challenging task. Reducing atmospheric CO2 (CO2R) by converting it to value-added chemicals in a carbon neutral footprint manner must be the ultimate goal. The latest progress in CO2R through either abiotic (artificial catalysts) or biotic (natural enzymes) processes is reviewed herein. Abiotic CO2R can be conducted in the aqueous phase that usually leads to the formation of a mixture of CO, formic acid, and hydrogen. By contrast, a wide spectrum of hydrocarbon species is often observed by abiotic CO2R in the gaseous phase. On the other hand, biotic CO2R is often conducted in the aqueous phase and a wide spectrum of value-added chemicals are obtained. Key to the success of the abiotic process is understanding the surface chemistry of catalysts, which significantly governs the reactivity and selectivity of CO2R. However, in biotic CO2R, operation conditions and reactor design are crucial to reaching a neutral carbon footprint. Future research needs to look toward neutral or even negative carbon footprint CO2R processes. Having a deep insight into the scientific and technological aspect of both abiotic and biotic CO2R would advance in designing efficient catalysts and microalgae farming systems. Integrating the abiotic and biotic CO2R such as microbial fuel cells further diversifies the spectrum of CO2R.
Collapse
|
22
|
Characterization and RNA-seq transcriptomic analysis of a Scenedesmus obliqnus mutant with enhanced photosynthesis efficiency and lipid productivity. Sci Rep 2021; 11:11795. [PMID: 34083552 PMCID: PMC8175553 DOI: 10.1038/s41598-021-88954-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 01/27/2021] [Indexed: 11/24/2022] Open
Abstract
Microalgae have received significant attention as potential next-generation microbiologic cell factories for biofuels. However, the production of microalgal biofuels is not yet sufficiently cost-effective for commercial applications. To screen higher lipid-producing strains, heavy carbon ion beams are applied to induce a genetic mutant. An RNA-seq technology is used to identify the pathways and genes of importance related to photosynthesis and biofuel production. The deep elucidation of photosynthesis and the fatty acid metabolism pathway involved in lipid yield is valuable information for further optimization studies. This study provided the photosynthetic efficiency and transcriptome profiling of a unicellular microalgae, Scenedesmus obliqnus mutant SO120G, with enhanced lipid production induced by heavy carbon ion beams. The lipid yield (52.5 mg L−1) of SO120G mutant were enhanced 2.4 fold compared with that of the wild strain under the nitrogen deficient condition. In addition, the biomass and growth rate were 57% and 25% higher, respectively, in SO120G than in the wild type, likely owing to an improved maximum quantum efficiency (Fv/Fm) of photosynthesis. As for the major pigment compositions, the content of chlorophyll a and carotenoids was higher in SO120G than in the wild type. The transcriptome data confirmed that a total of 2077 genes with a change of at least twofold were recognized as differential expression genes (DEGs), of which 1060 genes were up-regulated and 1017 genes were down-regulated. Most of the DEGs involved in lipid biosynthesis were up-regulated with the mutant SO120G. The expression of the gene involved in the fatty acid biosynthesis and photosynthesis of SO120G was upregulated, while that related to starch metabolism decreased compared with that of the wild strain. This work demonstrated that heavy-ion irradiation is an promising strategy for quality improvement. In addition, the mutant SO120G was shown to be a potential algal strain for enhanced lipid production. Transcriptome sequencing and annotation of the mutant suggested the possible genes responsible for lipid biosynthesis and photosynthesis, and identified the putative target genes for future genetic manipulation and biotechnological applications.
Collapse
|
23
|
Karpagam R, Jawaharraj K, Gnanam R. Review on integrated biofuel production from microalgal biomass through the outset of transesterification route: a cascade approach for sustainable bioenergy. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 766:144236. [PMID: 33422843 DOI: 10.1016/j.scitotenv.2020.144236] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/10/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
In recent years, microalgal feedstocks have gained immense potential for sustainable biofuel production. Thermochemical, biochemical conversions and transesterification processes are employed for biofuel production. Especially, the transesterification process of lipid molecules to fatty acid alkyl esters (FAAE) is being widely employed for biodiesel production. In the case of the extractive transesterification process, biodiesel is produced from the extracted microalgal oil. Whereas In-situ (reactive) transesterification allows the direct conversion of microalgae to biodiesel avoiding the sequential steps, which subsequently reduces the production cost. Though microalgae have the highest potential to be an alternate renewable feedstock, the minimization of biofuel production cost is still a challenge. The biorefinery approaches that rely on simple cascade processes involving cost-effective technologies are the need of an hour for sustainable bioenergy production using microalgae. At the same time, combining the biorefineries for both (i) high value-low volume (food and health supplements) and (ii) low value- high volume (waste remediation, bioenergy) from microalgae involves regulatory and technical problems. Waste-remediation and algal biorefinery were extensively reviewed in many previous reports. On the other hand, this review focuses on the cascade processes for efficient utilization of microalgae for integrated bioenergy production through the transesterification. Microalgal biomass remnants after the transesterification process, comprising carbohydrates as a major component (process flow A) or the carbohydrate fraction after bio-separation of pretreated microalgae (process flow B) can be utilized for bioethanol production. Therefore, this review concentrates on the cascade flow of integrated bioprocessing methods for biodiesel and bioethanol production through the transesterification and biochemical routes. The review also sheds light on the recent combinatorial approaches of transesterification of microalgae. The applicability of spent microalgal biomass residue for biogas and other applications to bring about zero-waste residue are discussed. Furthermore, techno-economic analysis (TEA), life cycle assessment (LCA) and challenges of microalgal biorefineries are discussed.
Collapse
Affiliation(s)
- Rathinasamy Karpagam
- Department of Plant Biotechnology, Centre for Plant Molecular Biology and Biotechnology (CPMB & B), Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India.
| | - Kalimuthu Jawaharraj
- Department of Civil and Environmental Engineering, South Dakota Mines, Rapid City 57701, SD, United States
| | - Ramasamy Gnanam
- Department of Plant Molecular Biology and Bioinformatics, Centre for Plant Molecular Biology and Biotechnology (CPMB & B), Tamil Nadu Agricultural University, Coimbatore 641003, Tamil Nadu, India
| |
Collapse
|
24
|
Das S, Nath K, Chowdhury R. Comparative studies on biomass productivity and lipid content of a novel blue-green algae during autotrophic and heterotrophic growth. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:12107-12118. [PMID: 32613502 DOI: 10.1007/s11356-020-09577-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 06/02/2020] [Indexed: 06/11/2023]
Abstract
Algae have long been acclaimed as the attractive renewable source for generating third-generation biofuels, particularly biodiesel. Under the present investigation, the trends of production of biomass and lipid during the autotrophic and heterotrophic growth of newly isolated blue-green algae, Leptolyngbya subtilis JUCHE1, were compared and correlated with the variation in C-sources. In the autotrophic and heterotrophic growth studies, CO2 and glycerol were respectively used as the inorganic and organic C-sources maintaining equivalence in the initial amount of carbon. Light was used as the source of energy in both cases. The concentration of CO2 in the feed gas stream was varied from 5 to 20% (% v/v). Equivalent quantity of carbon was supplied through glycerol during heterotrophic growth. Small-scale closed algal bioreactors were used for growing the algae at 37 °C and 2.5 kLux light illumination in batch mode for 0-4 days. Primarily, higher biomass production from glycerol compared with CO2 was observed. In case of photoautotrophic growth, the maximum values of biomass and lipid productivity, obtained at 15% CO2, were 0.1857 g/L/d and of 0.020 g/L/d respectively. The maximum biomass productivity of 0.2733 g/L/d was obtained for photoheterotrophic growth at a glycerol concentration equivalent to 15% CO2 (v/v). Under photoheterotrophic growth of Leptolyngbya subtilis JUCHE1, lipid productivity of 0.0702 g/L/d was obtained at glycerol concentration equivalent to 5% (v/v) CO2, which is 4.66-fold higher than that obtained under corresponding photoautotrophic condition. The "switch-over" from the autotrophy to the photoheterotrophy instigated the oleaginous anabolism and consequent lipid enrichment in L. subtilis JUCHE1, which can be extracted and converted to biodiesel.
Collapse
Affiliation(s)
- Sumona Das
- Chemical Engineering Department, Jadavpur University, Kolkata, 700032, India
| | - Kaustav Nath
- Chemical Engineering Department, Jadavpur University, Kolkata, 700032, India
| | - Ranjana Chowdhury
- Chemical Engineering Department, Jadavpur University, Kolkata, 700032, India.
| |
Collapse
|
25
|
Wang S, Hu S, Shang H, Barati B, Gong X, Hu X, El-Fatah Abomohra A. Study on the co-operative effect of kitchen wastewater for harvest and enhanced pyrolysis of microalgae. BIORESOURCE TECHNOLOGY 2020; 317:123983. [PMID: 32799082 DOI: 10.1016/j.biortech.2020.123983] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/05/2020] [Accepted: 08/06/2020] [Indexed: 06/11/2023]
Abstract
Microalgae biofuels have received extensive attention as a new generation of renewable energy. However, the cost of cultivation and harvest limits the large-scale use of microalgae. An innovative method for harvesting microalgae through flocculation using kitchen wastewater (KWW) and further co-pyrolysis to enhance the crude bio-oil production was proposed. Flocculation efficiency of KWW for Scenedesmus obliquus showed the highest value of 94.09%. Compared with centrifugation and chemical flocculation (CF), the thermogravimetric curve of the sample after KWW flocculation showed different pattern. In addition, bio-oil yield of microalgae harvested through KWW flocculation was also the highest among the three studied harvest methods, reaching 55.59%. Gas chromatographic mass spectrometry (GC-MS) analysis of bio-oil showed that addition of KWW could promote the production of esters and hydrocarbons in comparison to the microalgae harvested by centrifugation or CF.
Collapse
Affiliation(s)
- Shuang Wang
- School of Energy and Power Engineering, Jiangsu University, Jiangsu 212013, China
| | - Shuanhu Hu
- School of Energy and Power Engineering, Jiangsu University, Jiangsu 212013, China
| | - Hao Shang
- School of Energy and Power Engineering, Jiangsu University, Jiangsu 212013, China
| | - Bahram Barati
- School of Energy and Power Engineering, Jiangsu University, Jiangsu 212013, China
| | - Xun Gong
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xun Hu
- School of Material Science and Engineering, University of Jinan, Shandong 250022, China.
| | - Abd El-Fatah Abomohra
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| |
Collapse
|
26
|
Abomohra AEF, Almutairi AW. A close-loop integrated approach for microalgae cultivation and efficient utilization of agar-free seaweed residues for enhanced biofuel recovery. BIORESOURCE TECHNOLOGY 2020; 317:124027. [PMID: 32829118 DOI: 10.1016/j.biortech.2020.124027] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/12/2020] [Accepted: 08/13/2020] [Indexed: 06/11/2023]
Abstract
The aim of this work was to evaluate a novel integrated biorefinery route for enhanced energy recovery from seaweeds and microalgae. Agar extraction prior to anaerobic digestion recorded the highest biogas productivity of 32.57 L kg-1 VS d-1. Supplementation of the microalgal growth medium with anaerobic digestate from agar-extracted biomass enhanced the microalgal growth, recording the highest dry weight of 4.57 g L-1 at 20% digestate ratio. In addition, lipid content showed the highest value of 25.8 %dw. Due to enhancement of growth and lipid content, 20% digestate ratio showed the highest lipid productivity and FAMEs recovery (65.2 mg L-1 d-1 and 123.3 mg g-1dw, respectively), with enhanced biodiesel characteristics. The present study estimated annual revenue of 1252.7 US$ ton-1 from the whole Gracilaria multipartita biomass conversion into biogas, while that through agar extraction deserved 36087.0 US$ ton-1, with enhanced annual biodiesel yield by 69.7% over the control medium.
Collapse
Affiliation(s)
- Abd El-Fatah Abomohra
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.
| | - Adel W Almutairi
- Biological Sciences Department, Faculty of Science & Arts, King Abdulaziz University, Rabigh 21911, Saudi Arabia
| |
Collapse
|
27
|
Yang L, Ren L, Tan X, Chu H, Chen J, Zhang Y, Zhou X. Removal of ofloxacin with biofuel production by oleaginous microalgae Scenedesmus obliquus. BIORESOURCE TECHNOLOGY 2020; 315:123738. [PMID: 32659423 DOI: 10.1016/j.biortech.2020.123738] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/21/2020] [Accepted: 06/22/2020] [Indexed: 06/11/2023]
Abstract
Microalgae-based technology is an environmental-friendly and cost-effective method for biofuel production and pollutants removal. In this study, Scenedesmus obliquus (S. obliquus) was cultured with varying concentrations of ofloxacin (OFL) in BG11 medium. In the algae-antibiotics culture system, S. obliquus could effectively remove OFL with a concentration of 10 mg/L; however, the removal efficiency was restricted under higher doses (20-320 mg/L). Meanwhile, the lipid content significantly increased by 21.10-49.63%, which was caused by carbon being converted from carbohydrate to lipid. The greatest lipid productivity (7.53 mg/L/d) occurred at an OFL concentration of 10 mg/L, which was approximately 1.5-fold greater than the control. Moreover, S. obliquus cultured with OFL was able to improve the biodiesel quality due to an increase of saturated fatty acids and a decrease of unsaturated fatty acids. This study demonstrates that an algae-antibiotics system is a promising solution to simultaneously achieve antibiotics removal and biofuel production.
Collapse
Affiliation(s)
- Libin Yang
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| | - Li Ren
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
| | - Xiaobo Tan
- Hunan Provincial Key Laboratory of Comprehensive Utilization of Agricultural and Animal Husbandry Waste Resources, College of Urban and Environment Sciences, Hunan University of Technology, Hunan Province 412007, China
| | - Huaqiang Chu
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China
| | - Jiabin Chen
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China
| | - Yalei Zhang
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China.
| | - Xuefei Zhou
- School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai 200092, China.
| |
Collapse
|
28
|
Wang X, Liu SF, Qin ZH, Balamurugan S, Li HY, Lin CSK. Sustainable and stepwise waste-based utilisation strategy for the production of biomass and biofuels by engineered microalgae. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 265:114854. [PMID: 32504890 DOI: 10.1016/j.envpol.2020.114854] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/04/2020] [Accepted: 05/20/2020] [Indexed: 05/08/2023]
Abstract
Waste streams have emerged as potential feedstocks for biofuel production via microbial bioconversion. Metabolic engineering of the microalga Phaeodactylum tricornutum in its lipid biosynthetic pathways has been conducted with an aim to improve lipid production. However, there has been only limited achievement in satisfying biofuel demands by utilising extracellular organic carbons from low-cost waste streams. Herein, we present a successive staged cultivation mode, based on a previously engineered strain that co-overexpresses two key triacylglycerol biosynthesis genes. We first optimised microalgal biomass and lipid production by using food waste hydrolysate and crude glycerol as the cultivation media. Food waste hydrolysate (5% v/v) is a low-cost organic carbon source for enhanced microalgal biomass production, and the resulting lipid concentration was 1.08-fold higher with food-waste hydrolysate than that of the defined medium. Additionally, the resultant lipid concentration after using crude glycerol (100 mM) was 1.24-fold higher than that using the defined medium. Two carbon feeding modes (hybrid and sequential) were also performed to investigate the potential of engineered P. tricornutum with preliminary mechanistic analyses. The biodiesel properties of lipids produced in the hybrid mode were evaluated for potential application prospects. Collectively, this study demonstrates a waste stream utilisation strategy for efficient and sustainable microalgal biofuel production.
Collapse
Affiliation(s)
- Xiang Wang
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China; School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Si-Fen Liu
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Zi-Hao Qin
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China
| | - Srinivasan Balamurugan
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China; Department of Biotechnology, Bharathidasan University, Tiruchirappalli, 620024, India
| | - Hong-Ye Li
- Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institute, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Carol Sze Ki Lin
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China.
| |
Collapse
|
29
|
Osman MEH, Abo-Shady AM, Elshobary ME, Abd El-Ghafar MO, Abomohra AEF. Screening of seaweeds for sustainable biofuel recovery through sequential biodiesel and bioethanol production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:32481-32493. [PMID: 32506400 DOI: 10.1007/s11356-020-09534-1] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 05/29/2020] [Indexed: 02/05/2023]
Abstract
The present study evaluated the sequential biodiesel-bioethanol production from seaweeds. A total of 22 macroalgal species were collected at different seasons and screened based on lipid and carbohydrate contents as well as biomass production. The promising species was selected, based on the relative increase in energy compounds (REEC, %), for further energy conversion. Seasonal and annual biomass yields of the studied species showed significant variations. The rhodophyte Amphiroa compressa and the chlorophyte Ulva intestinalis showed the highest annual biomass yield of 75.2 and 61.5 g m-2 year-1, respectively. However, the highest annual carbohydrate productivity (ACP) and annual lipid productivity (ALP) were recorded for Ulva fasciata and Ulva intestinalis (17.0 and 3.0 g m-2 year-1, respectively). The later was selected for further studies because it showed 14.8% higher REEC value than Ulva fasciata. Saturated fatty acids (SAFs) showed 73.4%, with palmitic acid as a dominant fatty acid (43.8%). Therefore, biodiesel showed high saturation degree, with average degree of unsaturation (ADU) of 0.508. All the measured biodiesel characteristics complied the international standards. The first route of biodiesel production (R1) from Ulva intestinalis showed biodiesel recovery of 32.3 mg g-1 dw. The hydrolysate obtained after saccharification of the whole biomass (R2) and lipid-free biomass (R3) contained 1.22 and 1.15 g L-1, respectively, reducing sugars. However, bioethanol yield from R3 was 0.081 g g-1 dw, which represented 14.1% higher than that of R2. Therefore, application of sequential biofuel production using R3 resulted in gross energy output of 3.44 GJ ton-1 dw, which was 170.9% and 82.0% higher than R1 and R2, respectively. The present study recommended the naturally-grown Ulva intestinalis as a potential feedstock for enhanced energy recovery through sequential biodiesel-bioethanol production.
Collapse
Affiliation(s)
- Mohamed E H Osman
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Atef M Abo-Shady
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Mostafa E Elshobary
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
- School of Food & Biological Engineering, Jiangsu University, Zhenjiang, 212013, China
| | - Mahasen O Abd El-Ghafar
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt
| | - Abd El-Fatah Abomohra
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt.
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu, 610106, China.
| |
Collapse
|
30
|
Almutairi AW, El-Sayed AEKB, Reda MM. Combined effect of salinity and pH on lipid content and fatty acid composition of Tisochrysis lutea. Saudi J Biol Sci 2020; 27:3553-3558. [PMID: 33304166 PMCID: PMC7714971 DOI: 10.1016/j.sjbs.2020.07.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 07/20/2020] [Accepted: 07/23/2020] [Indexed: 12/14/2022] Open
Abstract
The haptophyte microalga Tisochrysis lutea was heterotrophically grown in F2 medium with different combinations of pH and salinity. Growth, oil content and fatty acids (FAs) profile were determined under each set of conditions. The salinity was adjusted using NaCl at concentrations of 0.4, 0.6, 0.8, or 1.0 M, while pH was adjusted at 7, 8, or 9, and heterotrophic growth was performed using organic carbon in the form of sugar cane industry waste (CM). Fatty acid methyl esters (FAMEs) were identified by gas chromatography. The results showed that pH of 8.0 was the optimal for dry weight and oil production, regardless of the salinity level. At pH 8.0, growth at a salinity of 0.4 M NaCl was optimal for biomass accumulation (1.185 g L-1). Under these conditions, the maximum growth rate was 0.055 g L-1 d-1, with a doubling time of 17.5 h and a degree of multiplication of 2.198. Oil content was maximal (34.87%) when the salinity was 0.4 M and the pH was 9.0. The ratio of saturated to unsaturated FAs was affected by the pH value and salinity, in that unsaturated FAs increased to 58.09% of the total FAs, considerably greater than the value of 40.59% obtained for the control (0.4 M NaCl and pH 8.0).
Collapse
Affiliation(s)
- Adel W. Almutairi
- Biological Sciences Department, Rabigh-Faculty of Science & Arts, King Abdulaziz University, Saudi Arabia
- Corresponding author.
| | | | - Marwa M. Reda
- Central Lab for Environmental Quality Monitoring, National Water Research Center, Egypt
| |
Collapse
|
31
|
Li X, Chen K, He Y. In situ and non-destructive detection of the lipid concentration of Scenedesmus obliquus using hyperspectral imaging technique. ALGAL RES 2020. [DOI: 10.1016/j.algal.2019.101680] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
32
|
Bio-oil production from residual biomass of microalgae after lipid extraction: The case of Dunaliella Sp. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101494] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
33
|
Choi HI, Hwang SW, Sim SJ. Comprehensive approach to improving life-cycle CO 2 reduction efficiency of microalgal biorefineries: A review. BIORESOURCE TECHNOLOGY 2019; 291:121879. [PMID: 31377048 DOI: 10.1016/j.biortech.2019.121879] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 07/21/2019] [Accepted: 07/22/2019] [Indexed: 06/10/2023]
Abstract
Along with the increase in global awareness of rising CO2 levels, microalgae have attracted considerable interest as a promising CO2 reduction platforms since they exhibit outstanding biomass productivity and are capable of producing numerous valuable products. At this moment, however, two major barriers, relatively low photosynthetic CO2 fixation efficiency and necessity of carbon-intensive microalgal process, obstruct them to be practically utilized. This review suggests effective approaches to improve life-cycle CO2 reduction of microalgal biorefinery. In order to enhance photosynthetic CO2 fixation, strategies to augment carbon content and to increase biomass productivity should be considered. For reducing CO2 emissions associated with the process operations, introduction of efficient process elements, designing of energy-saving process routes, reuse of waste resources and utilization of process integration can be noteworthy options. These comprehensive strategies will provide guidance for microalgal biorefineries to become a practical CO2 reduction technology in near future.
Collapse
Affiliation(s)
- Hong Il Choi
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, South Korea
| | - Sung-Won Hwang
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, South Korea
| | - Sang Jun Sim
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, South Korea.
| |
Collapse
|
34
|
Alam MM, Mumtaz AS, Hallenbeck PC, Shah SA, Abidin SZU, Inam F. Morphological characterization, growth appraisal, and probing biofuels potential of newly isolated Scenedesmus sp. from desert Cholistan. Microsc Res Tech 2019; 82:2079-2088. [PMID: 31587425 DOI: 10.1002/jemt.23380] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/06/2019] [Accepted: 09/10/2019] [Indexed: 01/30/2023]
Abstract
Microalgae have an excellent potential for producing valuable natural products, including biofuels. Therefore, it is imperative to explore and document the existing microalgal flora and utilize their potentials to cope the increasing human needs. The present work aims at exploring and characterizing newly isolated microalgae from desert Cholistan, a habitat with myriad algal diversity. Light microscopy, scanning electron microscopy, and molecular phylogenetic approaches were used for species-level identification. Characterization and growth optimization of Scendesmus sp. were analyzed under three different growth modes to determine the most favorable conditions for increasing biomass, growth rate, and lipid content. The results revealed that mixotrophic (MT) mode significantly increases photosynthetic activity, growth rate, and lipid content with glycerol as supplement carbon source. The investigated Scenedesmus dimorphous produced a maximum dry weight of 1.73 g L-1 , improved fatty acid methyl esters profile and yield lipid up to 40% of DCW (68 g L-1 ) under MT mode, which is almost double to that of photoautotrophic cultivation. The glycerol availability in medium has been identified as the critical element for boosting growth and lipid content. Thus, it can reduce the cost of biofuel production.
Collapse
Affiliation(s)
- Muhammad Maqsood Alam
- Departement de microbiologie et immunologie, Universite de Montreal, Montreal, Quebec, Canada
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Abdul Samad Mumtaz
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Patrick C Hallenbeck
- Departement de microbiologie et immunologie, Universite de Montreal, Montreal, Quebec, Canada
| | - Sayed Afzal Shah
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| | - Shiekh Zain Ul Abidin
- Department of Botany, Faculty of Biological Sciences, Gomal University, Dera Ismail Khan, Pakistan
- National Center for Natural Products Research, School of Pharmacy, University of Mississippi, Mississippi
| | - Farooq Inam
- Department of Plant Sciences, Quaid-i-Azam University, Islamabad, Pakistan
| |
Collapse
|
35
|
Cultivation of Oily Microalgae for the Production of Third-Generation Biofuels. SUSTAINABILITY 2019. [DOI: 10.3390/su11195424] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Biofuel production by oleaginous microalgae is a promising alternative to the conventional fossil fuels. Many microalgae species have been investigated and deemed as potential renewable sources for the production of biofuel, biogas, food supplements and other products. Oleaginous microalgae, named for their ability to produce oil, are reported to store 30–70% of lipid content due to its metabolic properties under nutrient starvation conditions. This review presents the assortment of the research studies focused on biofuel production from oleaginous microalgae. The new methods and technologies developed for oleaginous microalgae cultivation to improve their biomass content and lipid accumulation capacity were reviewed. The production of renewable, carbon neutral, bio-based or microalgae-based transport fuels are necessary for environmental protection and economic sustainability. Microalgae are a significant source of renewable biodiesel because of their ability to produce oils in the presence of sunlight more efficiently than that of crop oils. This review will provide the background to understanding the bottlenecks and the need for improvement in the cultivation or harvesting process for oleaginous microalgae.
Collapse
|
36
|
Abomohra AEF, Shang H, El-Sheekh M, Eladel H, Ebaid R, Wang S, Wang Q. Night illumination using monochromatic light-emitting diodes for enhanced microalgal growth and biodiesel production. BIORESOURCE TECHNOLOGY 2019; 288:121514. [PMID: 31129520 DOI: 10.1016/j.biortech.2019.121514] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 05/16/2019] [Accepted: 05/17/2019] [Indexed: 06/09/2023]
Abstract
The present study investigated the effect of monochromatic light-emitting diodes (LEDs) on the growth and biodiesel yield of the green microalga Scenedesmus obliquus. Different LEDs were applied individually or in combination during the night period. Among different individual treatments, red and blue illumination showed the highest biomass and lipid productivity due to stimulation of pigmentation and photosystem II, respectively. Microalgal growth, lipid production and biodiesel recovery significantly increased under combined blue-red illumination. In addition, saturated and monounsaturated fatty acids proportions increased in favor of polyunsaturated ones. Moreover, blue-red LEDs enhanced the net biodiesel energy output over the control. The total increase in net energy output represented 5.1, 3.8 and 10.8 MJ using red, blue and blue-red light, respectively. In conclusion, application of blue-red LEDs during the night period is an economical technology for microalgae cultivation, which might have a potential impact on the future of commercial biodiesel production from microalgae.
Collapse
Affiliation(s)
- Abd El-Fatah Abomohra
- School of Energy and Power Engineering, Jiangsu University, 212013 Jiangsu, China; Botany Department, Faculty of Science, Tanta University, 31527 Tanta, Egypt
| | - Hao Shang
- School of Energy and Power Engineering, Jiangsu University, 212013 Jiangsu, China
| | - Mostafa El-Sheekh
- Botany Department, Faculty of Science, Tanta University, 31527 Tanta, Egypt
| | - Hamed Eladel
- Botany Department, Faculty of Science, Benha University, 13518 Benha, Egypt
| | - Reham Ebaid
- School of the Environment and Safety Engineering, Jiangsu University, 212013 Jiangsu, China
| | - Shuang Wang
- School of Energy and Power Engineering, Jiangsu University, 212013 Jiangsu, China.
| | - Qian Wang
- School of Energy and Power Engineering, Jiangsu University, 212013 Jiangsu, China
| |
Collapse
|
37
|
Wang Z, Chen X, Liu S, Zhang Y, Wu Z, Xu W, Sun Q, Yang L, Zhang H. Efficient biosynthesis of anticancer polysaccharide by a mutant Chaetomium globosum ALE20 via non-sterilized fermentation. Int J Biol Macromol 2019; 136:1106-1111. [PMID: 31252005 DOI: 10.1016/j.ijbiomac.2019.06.186] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 06/13/2019] [Accepted: 06/24/2019] [Indexed: 12/21/2022]
Abstract
The sterilization process, due to its immense energy consumption, high facilities investment, and loss of raw materials by caramelization, during industrial production has drawn much attention. In this study, a methanol-resistant mutant strain, Chaetomium globosum ALE20, was obtained following 20 cycles of adaptive laboratory evolution process. The titer of anticancer polysaccharide (GCP-M) from C. globosum ALE20 reached 9.2 g/L with glycerol as sole carbon source using non-sterilized and fed-batch fermentation strategy. This titer represents a 200% increase compared with the 3.3 g/L attained with batch fermentation. The GCP-M monosaccharide was comprised of galactose, glucose, mannose and glucuronic acid, in a molar ratio of 3.83:66.37:3.26:1.95, respectively, and its weight-average molecular weight and polydispersity were 3.796 × 104 Da and 1.060, respectively. This work presents an ideal alternative and safer fermentation process without sterilization, and a useful approach for enhancing industrial production.
Collapse
Affiliation(s)
- Zichao Wang
- College of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Xuyang Chen
- College of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Siyu Liu
- College of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Yingying Zhang
- College of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Zhangtao Wu
- College of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Wenwen Xu
- College of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Qi Sun
- College of Life Sciences, Chongqing Normal University, Chongqing 401331, China.
| | - Libo Yang
- College of Landscape and Ecological Engineering, Hebei University of Engineering, Handan 056021, China
| | - Huiru Zhang
- College of Biological Engineering, Henan University of Technology, Zhengzhou 450001, China.
| |
Collapse
|
38
|
Wang Z, Ning T, Gao K, He X, Zhang H. Utilization of glycerol and crude glycerol for polysaccharide production by an endophytic fungus Chaetomium globosum CGMCC 6882. Prep Biochem Biotechnol 2019; 49:807-812. [DOI: 10.1080/10826068.2019.1621895] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Zichao Wang
- The Province Key Laboratory of Cereal Resource Transformation and Utilization, Henan University of Technology, Zhengzhou, China
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Tao Ning
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Kun Gao
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Xiaojia He
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| | - Huiru Zhang
- College of Biological Engineering, Henan University of Technology, Zhengzhou, China
| |
Collapse
|
39
|
Mishra S, Mohanty K. Comprehensive characterization of microalgal isolates and lipid-extracted biomass as zero-waste bioenergy feedstock: An integrated bioremediation and biorefinery approach. BIORESOURCE TECHNOLOGY 2019; 273:177-184. [PMID: 30445270 DOI: 10.1016/j.biortech.2018.11.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/31/2018] [Accepted: 11/04/2018] [Indexed: 06/09/2023]
Abstract
The present study investigated the feasibility of domestic sewage wastewater (DSW) as an alternate to fresh-water microalgae growth media towards high-value bioenergy feedstock production. Eight native microalgal strains were screened from DSW and the effect of raw DSW (RDSW), and autoclaved DSW (ADSW) on growth and bioremediation potential were evaluated and compared with control BG11 medium. The study confirmed RDSW as a potential growth medium while Monoraphidium sp. KMC4 showed superior biomass (1.47 ± 0.08 g L-1) and lipid yield (436.01 ± 0.06 mg L-1). The corresponding values for bioremediation of ammonia, nitrate, phosphate, as well as COD remained within 88-100%. CHNS, biochemical, TGA, FTIR, FAME analysis of KMC4 confirmed it's potential as bioenergy feedstock. Additionally, a comprehensive characterization of lipid-extracted microalgae biomass (LEMB) was carried out which suggested that LEMB can be used as a growth promoter as well as feedstock for biogas, bioethanol, and bio-oil production.
Collapse
Affiliation(s)
- Sanjeev Mishra
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Kaustubha Mohanty
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati 781039, India; Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India.
| |
Collapse
|
40
|
Ashour M, Elshobary ME, El-Shenody R, Kamil AW, Abomohra AEF. Evaluation of a native oleaginous marine microalga Nannochloropsis oceanica for dual use in biodiesel production and aquaculture feed. BIOMASS AND BIOENERGY 2019; 120:439-447. [DOI: 10.1016/j.biombioe.2018.12.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
|
41
|
Eladel H, Esakkimuthu S, Abomohra AEF. Dual Role of Microalgae in Wastewater Treatment and Biodiesel Production. APPLICATION OF MICROALGAE IN WASTEWATER TREATMENT 2019:85-121. [DOI: 10.1007/978-3-030-13909-4_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
42
|
Abomohra AEF, Elshobary M. Biodiesel, Bioethanol, and Biobutanol Production from Microalgae. MICROALGAE BIOTECHNOLOGY FOR DEVELOPMENT OF BIOFUEL AND WASTEWATER TREATMENT 2019:293-321. [DOI: 10.1007/978-981-13-2264-8_13] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
|
43
|
Anticancer Activity of Polysaccharides Produced from Glycerol and Crude Glycerol by an Endophytic Fungus Chaetomium globosum CGMCC 6882 on Human Lung Cancer A549 Cells. Biomolecules 2018; 8:biom8040171. [PMID: 30544990 PMCID: PMC6315677 DOI: 10.3390/biom8040171] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 12/04/2018] [Accepted: 12/06/2018] [Indexed: 12/23/2022] Open
Abstract
Two polysaccharides were produced by Chaetomium globosum CGMCC 6882 from glycerol (GCP-1) and crude glycerol (GCP-2). Chemical characteristics results showed GCP-1 and GCP-2 were similar polysaccharides, but the molecular weights of GCP-1 and GCP-2 were 5.340 × 104 Da and 3.105 × 104 Da, respectively. Viabilities of A549 cells after treatment with GCP-1 and GCP-2 were 49% and 39% compared to the control group. Meanwhile, flow cytometry results indicated that GCP-1 and GCP-2 could induce 17.79% and 24.28% of A549 cells to apoptosis with 200 μg/mL concentration treated for 24 h. RT-PCR results suggested that GCP-1 and GCP-2 could be used as potential and effective apoptosis inducers on A549 cells by increasing BAX, CASPASE-3, CASPASE-9, TIMP-1, TIMP-2 expression and decreasing BCL-2 expression. This research provided an innovative approach to using a byproduct of biodiesel production (crude glycerol) to produce polysaccharides of potential medicinal benefit.
Collapse
|
44
|
El-Sheekh M, Abomohra AEF, Eladel H, Battah M, Mohammed S. Screening of different species of Scenedesmus isolated from Egyptian freshwater habitats for biodiesel production. RENEWABLE ENERGY 2018; 129:114-120. [DOI: 10.1016/j.renene.2018.05.099] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
45
|
Evaluation of Chlorella sorokiniana isolated from local municipal wastewater for dual application in nutrient removal and biodiesel production. Bioprocess Biosyst Eng 2018; 42:425-433. [PMID: 30465129 DOI: 10.1007/s00449-018-2046-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 11/15/2018] [Indexed: 01/12/2023]
Abstract
The isolated microalga Chlorella sorokiniana BENHA721_ABO4 was grown in Bold's basal medium (BBM) as a control, municipal wastewater (WW), and wastewater enriched with BBM elements (WW+). Cultivation in WW+ showed the highest cell number which represented 25.3 and 47.3% over that grown in WW and BBM, respectively. However, rapid growth in WW+ was accompanied by significant reduction in lipid content. Due to lipid accumulation in WW, it showed the maximum significant lipid productivity of 16.2 mg L-1 day-1. Microalgae cultivation in WW for 10 days showed 74.2, 83.3, and 78.0% removal efficiency for NO3-N, NH3-N and TP, respectively. In addition, growth in WW significantly reduced polyunsaturated fatty acids by 36.0% with respect to BBM in favor of monounsaturated fatty acids. The present results confirmed that C. sorokiniana isolate BENHA721_ABO4 grown in secondary effluent municipal wastewater offers real potential for future application in wastewater treatment and biodiesel production.
Collapse
|
46
|
Sharma J, Kumar SS, Bishnoi NR, Pugazhendhi A. Enhancement of lipid production from algal biomass through various growth parameters. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.103] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
|
47
|
El-Esawi MA, Alaraidh IA, Alsahli AA, Alzahrani SM, Ali HM, Alayafi AA, Ahmad M. Serratia liquefaciens KM4 Improves Salt Stress Tolerance in Maize by Regulating Redox Potential, Ion Homeostasis, Leaf Gas Exchange and Stress-Related Gene Expression. Int J Mol Sci 2018; 19:E3310. [PMID: 30355997 PMCID: PMC6274875 DOI: 10.3390/ijms19113310] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 10/02/2018] [Accepted: 10/16/2018] [Indexed: 01/09/2023] Open
Abstract
High salinity mitigates crop productivity and quality. Plant growth-promoting soil rhizobacteria (PGPR) improve plant growth and abiotic stress tolerance via mediating various physiological and molecular mechanisms. This study investigated the effects of the PGPR strain Serratia liquefaciens KM4 on the growth and physiological and molecular responsiveness of maize (Zea mays L.) plants under salinity stress (0, 80, and 160 mM NaCl). High salinity significantly reduced plant growth and biomass production, nutrient uptake, leaf relative water content, pigment content, leaf gas exchange attributes, and total flavonoid and phenolic contents in maize. However, osmolyte content (e.g., soluble proteins, proline, and free amino acids), oxidative stress markers, and enzymatic and non-enzymatic antioxidants levels were increased in maize under high salinity. On the other hand, Serratia liquefaciens KM4 inoculation significantly reduced oxidative stress markers, but increased the maize growth and biomass production along with better leaf gas exchange, osmoregulation, antioxidant defense systems, and nutrient uptake under salt stress. Moreover, it was found that all these improvements were accompanied with the upregulation of stress-related genes (APX, CAT, SOD, RBCS, RBCL, H⁺-PPase, HKT1, and NHX1), and downregulation of the key gene in ABA biosynthesis (NCED). Taken together, the results demonstrate the beneficial role of Serratia liquefaciens KM4 in improving plant growth and salt stress tolerance in maize by regulating ion homeostasis, redox potential, leaf gas exchange, and stress-related genes expression.
Collapse
Affiliation(s)
- Mohamed A El-Esawi
- Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.
- UMR CNRS 8256 (B2A), IBPS, Université Paris VI, 75005 Paris, France.
| | - Ibrahim A Alaraidh
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Abdulaziz A Alsahli
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Saud M Alzahrani
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
| | - Hayssam M Ali
- Botany and Microbiology Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
- Timber Trees Research Department, Sabahia Horticulture Research Station, Horticulture Research Institute, Agriculture Research Center, Alexandria 21526, Egypt.
| | - Aisha A Alayafi
- Biological Sciences Department, Faculty of Science, University of Jeddah, Jeddah 21577, Saudi Arabia.
| | - Margaret Ahmad
- UMR CNRS 8256 (B2A), IBPS, Université Paris VI, 75005 Paris, France.
- Department of Biology, Xavier University, Cincinnati, OH 45207, USA.
| |
Collapse
|
48
|
Shao W, Ebaid R, Abomohra AEF, Shahen M. Enhancement of Spirulina biomass production and cadmium biosorption using combined static magnetic field. BIORESOURCE TECHNOLOGY 2018; 265:163-169. [PMID: 29890441 DOI: 10.1016/j.biortech.2018.06.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 06/04/2018] [Accepted: 06/05/2018] [Indexed: 05/16/2023]
Abstract
The effect of static magnetic field (SMF) on Spirulina platensis growth and its influence on cadmium ions (Cd2+) removal efficiency were studied. Application of 6 h day-1 SMF resulted in the highest significant biomass productivity of 0.198 g L-1 day-1. However, 10 and 15 mg L-1 of Cd2+ resulted in significant reduction in biomass productivity by 8.8 and 12.5%, respectively, below the control. Combined SMF showed 30.1% significant increase in biomass productivity over the control. On the other hand, increase of initial Cd2+ concentration resulted in significant reduction of Cd2+ removal efficiency, representing 79.7% and 61.5% at 10 and 15 mg L-1, respectively, after 16 days. Interestingly, application of SMF for 6 h day-1 enhanced Cd2+ removal efficiency counted by 91.4% and 82.3% after 20 days for cultures with initial Cd2+ concentration of 10 and 15 mg L-1, representing increase by 6.3 and 25.3%, respectively, over the SMF-untreated cultures.
Collapse
Affiliation(s)
- Weilan Shao
- School of the Environment and Safety Engineering, Jiangsu University, 212013 Jiangsu, China
| | - Reham Ebaid
- School of the Environment and Safety Engineering, Jiangsu University, 212013 Jiangsu, China
| | - Abd El-Fatah Abomohra
- School of Energy and Power Engineering, Jiangsu University, 212013 Jiangsu, China; Faculty of Science, Tanta University, 31527 Tanta, Egypt.
| | - Mohamed Shahen
- Faculty of Science, Tanta University, 31527 Tanta, Egypt; College of Life Science, Northwest A & F University, Yangling, Shaanxi 712100, China
| |
Collapse
|