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Mehariya S, Annamalai SN, Thaher MI, Quadir MA, Khan S, Rahmanpoor A, Abdurahman Kashem, Faisal M, Sayadi S, Al Hawari A, Al-Jabri H, Das P. A comprehensive review on versatile microalga Tetraselmis: Potentials applications in wastewater remediation and bulk chemical production. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 365:121520. [PMID: 38917540 DOI: 10.1016/j.jenvman.2024.121520] [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: 02/28/2024] [Revised: 05/08/2024] [Accepted: 06/16/2024] [Indexed: 06/27/2024]
Abstract
Microalgae are considered sustainable resources for the production of biofuel, feed, and bioactive compounds. Among various microalgal genera, the Tetraselmis genus, containing predominantly marine microalgal species with wide tolerance to salinity and temperature, has a high potential for large-scale commercialization. Until now, Tetraselmis sp. are exploited at smaller levels for aquaculture hatcheries and bivalve production. However, its prolific growth rate leads to promising areal productivity and energy-dense biomass, so it is considered a viable source of third-generation biofuel. Also, microbial pathogens and contaminants are not generally associated with Tetraselmis sp. in outdoor conditions due to faster growth as well as dominance in the culture. Numerous studies revealed that the metabolite compositions of Tetraselmis could be altered favorably by changing the growth conditions, taking advantage of its acclimatization or adaptation ability in different conditions. Furthermore, the biorefinery approach produces multiple fractions that can be successfully upgraded into various value-added products along with biofuel. Overall, Tetraselmis sp. could be considered a potential strain for further algal biorefinery development under the circular bioeconomy framework. In this aspect, this review discusses the recent advancements in the cultivation and harvesting of Tetraselmis sp. for wider application in different sectors. Furthermore, this review highlights the key challenges associated with large-scale cultivation, biomass harvesting, and commercial applications for Tetraselmis sp.
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Affiliation(s)
- Sanjeet Mehariya
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Senthil Nagappan Annamalai
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Mahmoud Ibrahim Thaher
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Mohammed Abdul Quadir
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Shoyeb Khan
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Ali Rahmanpoor
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Abdurahman Kashem
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Mohamed Faisal
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Sami Sayadi
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Alaa Al Hawari
- Department of Civil and Environmental Engineering, College of Engineering, Qatar University, 2713, Doha, Qatar
| | - Hareb Al-Jabri
- Department of Biological and Environmental Sciences, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - Probir Das
- Algal Technology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar.
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Silva JDME, Martins LHDS, Moreira DKT, Silva LDP, Barbosa PDPM, Komesu A, Ferreira NR, Oliveira JARD. Microbial Lipid Based Biorefinery Concepts: A Review of Status and Prospects. Foods 2023; 12:foods12102074. [PMID: 37238892 DOI: 10.3390/foods12102074] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/17/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
The use of lignocellulosic biomass as a raw material for the production of lipids has gained increasing attention, especially in recent years when the use of food in the production of biofuels has become a current technology. Thus, the competition for raw materials for both uses has brought the need to create technological alternatives to reduce this competition that could generate a reduction in the volume of food offered and a consequent commercial increase in the value of food. Furthermore, the use of microbial oils has been studied in many industrial branches, from the generation of renewable energy to the obtainment of several value-added products in the pharmaceutical and food industries. Thus, this review provides an overview of the feasibility and challenges observed in the production of microbial lipids through the use of lignocellulosic biomass in a biorefinery. Topics covered include biorefining technology, the microbial oil market, oily microorganisms, mechanisms involved in lipid-producing microbial metabolism, strain development, processes, lignocellulosic lipids, technical drawbacks, and lipid recovery.
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Affiliation(s)
- Jonilson de Melo E Silva
- Program of Food Science and Technology, Federal University of Pará (UFPA), Belém 66075-110, PA, Brazil
| | | | | | - Leonardo do Prado Silva
- Department of Food Science and Nutrition, Faculty of Food Engineering (FEA), State University of Campinas (UNICAMP), Campinas 13083-862, SP, Brazil
| | | | - Andrea Komesu
- Department of Marine Sciences (DCMar), Federal University of São Paulo (UNIFESP), Santos 11070-100, SP, Brazil
| | - Nelson Rosa Ferreira
- Faculty of Food Engineering, Technology Institute, Federal University of Pará (UFPA), Belém 66077-000, PA, Brazil
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Thanigaivel S, Rajendran S, Hoang TKA, Ahmad A, Luque R. Photobiological effects of converting biomass into hydrogen - Challenges and prospects. BIORESOURCE TECHNOLOGY 2023; 367:128278. [PMID: 36351535 DOI: 10.1016/j.biortech.2022.128278] [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: 09/29/2022] [Revised: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
In comparison to other methods of producing hydrogen, the production of biohydrogen is significantly less harmful to the surrounding ecosystem when it was produced from the biological origin such as microalgae. It could take the place of conventional fossil fuels while avoiding the emission of greenhouse gases. The substrates such as food, agricultural waste, and industrial waste can be readily utilized after the necessary pretreatment, led to an increase in the yield of hydrogen. Improving the production of biofuels at each stage can have a significant impact on the final results, making this method a potentially useful instrument. As a consequence of this, numerous approaches to pretreat the algal biomass, numerous types of enzymes and catalyst that play a crucial role for hydrogen production, the variables that influence the production of hydrogen, and the potential applications of genetic engineering have all been comprehensively covered in this study.
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Affiliation(s)
- S Thanigaivel
- Department of Biotechnology, Faculty of Science & Humanities, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India
| | - Saravanan Rajendran
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez 1775, Arica, Chile.
| | - Tuan K A Hoang
- Centre of Excellence in Transportation Electrification and Energy Storage, Hydro-Québec, 1806, boul. Lionel-Boulet, Varennes J3X 1S1, Canada
| | - Awais Ahmad
- Departamento de Quimica Organica, Universidad de Cordoba, Edificio Marie Curie (C-3), Ctra Nnal IV-A, Km 396, E14014 Cordoba, Spain
| | - Rafael Luque
- Departamento de Quimica Organica, Universidad de Cordoba, Edificio Marie Curie (C-3), Ctra Nnal IV-A, Km 396, E14014 Cordoba, Spain; Peoples Friendship University of Russia (RUDN University), 6 Miklukho Maklaya str., 117198 Moscow, Russian Federation
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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.
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Sangela V, Kumar M, Choudhary S, Gour VS, Meena M, Vinayak V, Harish. Effect of nitrogen, phosphorus and sodium bicarbonate on lipid production and fatty acid profile in Coelastrella terrestris. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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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: 1] [Impact Index Per Article: 0.5] [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.
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Affiliation(s)
- Adel W. Almutairi
- Biological Sciences Department, Faculty of Science and Arts, King Abdulaziz University, Rabigh, Saudi Arabia
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Almutairi AW. Evaluation of halophilic microalgae isolated from Rabigh Red Sea coastal area for biodiesel production: Screening and biochemical studies. Saudi J Biol Sci 2022; 29:103339. [PMID: 35770271 PMCID: PMC9234712 DOI: 10.1016/j.sjbs.2022.103339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 05/04/2022] [Accepted: 06/10/2022] [Indexed: 11/30/2022] Open
Abstract
In the present study, different water samples from Red Sea coastal area at Rabigh city, Saudi Arabia were studied for their dominant algal species. Microalgal isolation was carried out based on dilution method and morphologically examined using F/2 as a growth medium. Dry weight and main biochemical composition (protein, carbohydrates, lipids) of all species were performed at the end of the growth, and biodiesel characteristics were estimated. Nannochloropsis sp., Dunaliella sp., Tetraselmis sp., Prorocentrum sp., Chlorella sp., Nitzschia sp., Coscinodiscus sp., and Navicula sp. were the most dominant species in the collected water samples and were used for further evaluation. Nannochloropsis sp. surpassed all other isolates in concern of biomass production with the maximum recorded dry weight of 0.89 g L−1, followed by Dunaliella sp. (0.69 g L−1). The highest crude protein content was observed in Nitzschia sp. (38.21%) and Dunaliella sp. (18.01%), while Nannochloropsis sp. showed 13.38%, with the lowest recorded lipid content in Coscinodiscus sp. (10.09%). Based on the growth, lipid content, and biodiesel characteristics, the present study suggested Dunaliella sp. and Nitzschia sp. as promising candidates for further large-scale biodiesel production.
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Affiliation(s)
- Adel W Almutairi
- Biological Sciences Department, Faculty of Science & Arts, King Abdulaziz University, Rabigh, Saudi Arabia
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Kumar A, Singh AK, Bilal M, Chandra R. Extremophilic Ligninolytic Enzymes: Versatile Biocatalytic Tools with Impressive Biotechnological Potential. Catal Letters 2022. [DOI: 10.1007/s10562-021-03800-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Fazili ABA, Shah AM, Zan X, Naz T, Nosheen S, Nazir Y, Ullah S, Zhang H, Song Y. Mucor circinelloides: a model organism for oleaginous fungi and its potential applications in bioactive lipid production. Microb Cell Fact 2022; 21:29. [PMID: 35227264 PMCID: PMC8883733 DOI: 10.1186/s12934-022-01758-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 02/10/2022] [Indexed: 11/10/2022] Open
Abstract
Microbial oils have gained massive attention because of their significant role in industrial applications. Currently plants and animals are the chief sources of medically and nutritionally important fatty acids. However, the ever-increasing global demand for polyunsaturated fatty acids (PUFAs) cannot be met by the existing sources. Therefore microbes, especially fungi, represent an important alternative source of microbial oils being investigated. Mucor circinelloides—an oleaginous filamentous fungus, came to the forefront because of its high efficiency in synthesizing and accumulating lipids, like γ-linolenic acid (GLA) in high quantity. Recently, mycelium of M. circinelloides has acquired substantial attraction towards it as it has been suggested as a convenient raw material source for the generation of biodiesel via lipid transformation. Although M. circinelloides accumulates lipids naturally, metabolic engineering is found to be important for substantial increase in their yields. Both modifications of existing pathways and re-formation of biosynthetic pathways in M. circinelloides have shown the potential to improve lipid levels. In this review, recent advances in various important metabolic aspects of M. circinelloides have been discussed. Furthermore, the potential applications of M. circinelloides in the fields of antioxidants, nutraceuticals, bioremediation, ethanol production, and carotenoids like beta carotene and astaxanthin having significant nutritional value are also deliberated.
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Role of Biofuels in Energy Transition, Green Economy and Carbon Neutrality. SUSTAINABILITY 2021. [DOI: 10.3390/su132212374] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Modern civilization is heavily reliant on petroleum-based fuels to meet the energy demand of the transportation sector. However, burning fossil fuels in engines emits greenhouse gas emissions that harm the environment. Biofuels are commonly regarded as an alternative for sustainable transportation and economic development. Algal-based fuels, solar fuels, e-fuels, and CO2-to-fuels are marketed as next-generation sources that address the shortcomings of first-generation and second-generation biofuels. This article investigates the benefits, limitations, and trends in different generations of biofuels through a review of the literature. The study also addresses the newer generation of biofuels highlighting the social, economic, and environmental aspects, providing the reader with information on long-term sustainability. The use of nanoparticles in the commercialization of biofuel is also highlighted. Finally, the paper discusses the recent advancements that potentially enable a sustainable energy transition, green economy, and carbon neutrality in the biofuel sector.
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Evaluating the Influence of Cetane Improver Additives on the Outcomes of a Diesel Engine Characteristics Fueled with Peppermint Oil Diesel Blend. ENERGIES 2021. [DOI: 10.3390/en14102786] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This paper aims to evaluate the impact of cetane improvers on the combustion, performance and emission characteristics of a compression ignition engine fueled with a 20% peppermint bio-oil/diesel blend (P20). It is hypothesized that the low viscosity and boiling point of peppermint oil could improve the atomization characteristics of the fuel. However, the usage of peppermint oil is restricted due to its low cetane index. To improve this, Diethyl Ether (DEE) and Di- tertiary Butyl Peroxide (DTBP) are added to the P20 blend. The tests are performed in a single-cylinder naturally aspirated water-cooled diesel engine and results indicate that NOx emission for P20 + DEE and P20 + DTBP is decreased by 10.4% and 9.8%, respectively, when compared to P20 at full load condition. Among these two cetane improvers, DTBP is more effective in reducing the CO, HC and smoke emission and the performance of the engine was reported to be higher for P20 + DTBP blends.
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Lakshmikandan M, Murugesan A, Wang S, El-Fatah Abomohra A. Optimization of acid hydrolysis on the green seaweed Valoniopsis pachynema and approach towards mixotrophic microalgal biomass and lipid production. RENEWABLE ENERGY 2021; 164:1052-1061. [DOI: 10.1016/j.renene.2020.10.062] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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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: 17] [Impact Index Per Article: 4.3] [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.
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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.
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Abomohra AEF, El-Naggar AH, Alaswad SO, Elsayed M, Li M, Li W. Enhancement of biodiesel yield from a halophilic green microalga isolated under extreme hypersaline conditions through stepwise salinity adaptation strategy. BIORESOURCE TECHNOLOGY 2020; 310:123462. [PMID: 32388355 DOI: 10.1016/j.biortech.2020.123462] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 04/25/2020] [Accepted: 04/28/2020] [Indexed: 05/21/2023]
Abstract
In the present study, a halophilic microalgal species was isolated from a hypersaline lagoon with salinity average of 45.3‰ and identified as Dunaliella salina KSA-HS022. It was further cultivated at a salinity range of 50-250‰, applied directly to batch cultures or through stepwise increase in a semi-continuous culture. The later showed the highest biomass productivity of 0.191 g L-1 d-1 at 125‰, which represented 45.8% higher than the corresponding batch culture (control). Oxidative markers in the control cultures were significantly higher than those of the adapted culture, confirming reduction of oxidative stress by adaptation. In addition, stepwise adaptation showed the highest lipid productivity of 56.5 mg L-1 d-1 at 150‰ (39.9% higher than the corresponding control), which resulted in the highest fatty acid methyl esters productivity. Moreover, stepwise increase of salinity up to 150‰ enhanced the biodiesel characteristics, offering a new route for enhanced biodiesel production at extraordinary salinity levels.
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Affiliation(s)
- Abd El-Fatah Abomohra
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China; Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Amal H El-Naggar
- Botany and Microbiology Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Saleh O Alaswad
- Nuclear Science Research Institute (NSRI), King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia
| | - Mahdy Elsayed
- Department of Agricultural Engineering, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
| | - Mei Li
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China.
| | - Wenyuan Li
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
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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: 1.8] [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).
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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
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Patel A, Karageorgou D, Rova E, Katapodis P, Rova U, Christakopoulos P, Matsakas L. An Overview of Potential Oleaginous Microorganisms and Their Role in Biodiesel and Omega-3 Fatty Acid-Based Industries. Microorganisms 2020; 8:E434. [PMID: 32204542 PMCID: PMC7143722 DOI: 10.3390/microorganisms8030434] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 03/16/2020] [Accepted: 03/18/2020] [Indexed: 12/17/2022] Open
Abstract
Microorganisms are known to be natural oil producers in their cellular compartments. Microorganisms that accumulate more than 20% w/w of lipids on a cell dry weight basis are considered as oleaginous microorganisms. These are capable of synthesizing vast majority of fatty acids from short hydrocarbonated chain (C6) to long hydrocarbonated chain (C36), which may be saturated (SFA), monounsaturated (MUFA), or polyunsaturated fatty acids (PUFA), depending on the presence and number of double bonds in hydrocarbonated chains. Depending on the fatty acid profile, the oils obtained from oleaginous microorganisms are utilized as feedstock for either biodiesel production or as nutraceuticals. Mainly microalgae, bacteria, and yeasts are involved in the production of biodiesel, whereas thraustochytrids, fungi, and some of the microalgae are well known to be producers of very long-chain PUFA (omega-3 fatty acids). In this review article, the type of oleaginous microorganisms and their expertise in the field of biodiesel or omega-3 fatty acids, advances in metabolic engineering tools for enhanced lipid accumulation, upstream and downstream processing of lipids, including purification of biodiesel and concentration of omega-3 fatty acids are reviewed.
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Affiliation(s)
- Alok Patel
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden; (A.P.); (E.R.); (U.R.); (P.C.)
| | - Dimitra Karageorgou
- Laboratory of Biotechnology, Department of Biological Applications and Technologies, University of Ioannina, Ioannina 45110, Greece; (D.K.); (P.K.)
| | - Emma Rova
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden; (A.P.); (E.R.); (U.R.); (P.C.)
| | - Petros Katapodis
- Laboratory of Biotechnology, Department of Biological Applications and Technologies, University of Ioannina, Ioannina 45110, Greece; (D.K.); (P.K.)
| | - Ulrika Rova
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden; (A.P.); (E.R.); (U.R.); (P.C.)
| | - Paul Christakopoulos
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden; (A.P.); (E.R.); (U.R.); (P.C.)
| | - Leonidas Matsakas
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental, and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden; (A.P.); (E.R.); (U.R.); (P.C.)
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Uma V, Gnanasekaran D, Lakshmanan U, Dharmar P. Survey and isolation of marine cyanobacteria from eastern coast of India as a biodiesel feedstock. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101541] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Stamenković M, Steinwall E, Nilsson AK, Wulff A. Fatty acids as chemotaxonomic and ecophysiological traits in green microalgae (desmids, Zygnematophyceae, Streptophyta): A discriminant analysis approach. PHYTOCHEMISTRY 2020; 170:112200. [PMID: 31756679 DOI: 10.1016/j.phytochem.2019.112200] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 09/26/2019] [Accepted: 11/07/2019] [Indexed: 06/10/2023]
Abstract
Desmids (Zygnematophyceae) are a group of poorly studied green microalgae. The aim of the present study was to identify fatty acids (FAs) that could be used as biomarkers in desmids in general, and to determine FAs as traits within different ecophysiological desmid groups. FA profiles of 29 desmid strains were determined and analysed with respect to their geographic origin, trophic preference and age of cultivation. It appeared that merely FAs present in relatively large proportions such as palmitic, linoleic, α-linolenic and hexadecatrienoic acids could be used as biomarkers for reliable categorization of this microalgal group. Linear discriminant analysis applied to three a priori defined groups of desmids, revealed clear strain-specific characteristics regarding FA distribution, influenced by climate and trophic conditions at the source sites as well as by the age of culture and growth phase. Accordingly, when considering FAs for the determination of lower taxonomic ranks we recommend using the term "trait" instead of "biomarker", as the latter designates unchangeable "fingerprint" of a specific taxon. Furthermore, despite that desmids were regarded as microalgae having stable genomes, long-term cultivation appeared to cause modifications in FA metabolic pathways, evident as a larger proportion of stearidonic acid in desmid strains cultivated over extensive time periods (>35 years).
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Affiliation(s)
- Marija Stamenković
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 461, SE40530, Göteborg, Sweden; Institute for Biological Research "Siniša Stanković", University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia.
| | - Elin Steinwall
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 461, SE40530, Göteborg, Sweden
| | - Anders K Nilsson
- Institute for Biological Research "Siniša Stanković", University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia; Section for Ophthalmology, Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Angela Wulff
- Department of Biological and Environmental Sciences, University of Gothenburg, Box 461, SE40530, Göteborg, Sweden
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Lakshmikandan M, Murugesan A, Wang S, Abomohra AEF, Jovita PA, Kiruthiga S. Sustainable biomass production under CO2 conditions and effective wet microalgae lipid extraction for biodiesel production. JOURNAL OF CLEANER PRODUCTION 2020; 247:119398. [DOI: 10.1016/j.jclepro.2019.119398] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Biomass and lipid induction strategies in microalgae for biofuel production and other applications. Microb Cell Fact 2019; 18:178. [PMID: 31638987 PMCID: PMC6805540 DOI: 10.1186/s12934-019-1228-4] [Citation(s) in RCA: 119] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 10/04/2019] [Indexed: 11/20/2022] Open
Abstract
The use of fossil fuels has been strongly related to critical problems currently affecting society, such as: global warming, global greenhouse effects and pollution. These problems have affected the homeostasis of living organisms worldwide at an alarming rate. Due to this, it is imperative to look for alternatives to the use of fossil fuels and one of the relevant substitutes are biofuels. There are different types of biofuels (categories and generations) that have been previously explored, but recently, the use of microalgae has been strongly considered for the production of biofuels since they present a series of advantages over other biofuel production sources: (a) they don’t need arable land to grow and therefore do not compete with food crops (like biofuels produced from corn, sugar cane and other plants) and; (b) they exhibit rapid biomass production containing high oil contents, at least 15 to 20 times higher than land based oleaginous crops. Hence, these unicellular photosynthetic microorganisms have received great attention from researches to use them in the large-scale production of biofuels. However, one disadvantage of using microalgae is the high economic cost due to the low-yields of lipid content in the microalgae biomass. Thus, development of different methods to enhance microalgae biomass, as well as lipid content in the microalgae cells, would lead to the development of a sustainable low-cost process to produce biofuels. Within the last 10 years, many studies have reported different methods and strategies to induce lipid production to obtain higher lipid accumulation in the biomass of microalgae cells; however, there is not a comprehensive review in the literature that highlights, compares and discusses these strategies. Here, we review these strategies which include modulating light intensity in cultures, controlling and varying CO2 levels and temperature, inducing nutrient starvation in the culture, the implementation of stress by incorporating heavy metal or inducing a high salinity condition, and the use of metabolic and genetic engineering techniques coupled with nanotechnology.
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Amoozegar MA, Safarpour A, Noghabi KA, Bakhtiary T, Ventosa A. Halophiles and Their Vast Potential in Biofuel Production. Front Microbiol 2019; 10:1895. [PMID: 31507545 PMCID: PMC6714587 DOI: 10.3389/fmicb.2019.01895] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 07/31/2019] [Indexed: 11/13/2022] Open
Abstract
Global warming and the limitations of using fossil fuels are a main concern of all societies, and thus, the development of alternative fuel sources is crucial to improving the current global energy situation. Biofuels are known as the best alternatives of unrenewable fuels and justify increasing extensive research to develop new and less expensive methods for their production. The most frequent biofuels are bioethanol, biobutanol, biodiesel, and biogas. The production of these biofuels is the result of microbial activity on organic substrates like sugars, starch, oil crops, non-food biomasses, and agricultural and animal wastes. Several industrial production processes are carried out in the presence of high concentrations of NaCl and therefore, researchers have focused on halophiles for biofuel production. In this review, we focus on the role of halophilic microorganisms and their current utilization in the production of all types of biofuels. Also, the outstanding potential of them and their hydrolytic enzymes in the hydrolysis of different kind of biomasses and the production of biofuels are discussed.
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Affiliation(s)
- Mohammad Ali Amoozegar
- Extremophiles Laboratory, Department of Microbiology, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran
| | - Atefeh Safarpour
- Extremophiles Laboratory, Department of Microbiology, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran
| | - Kambiz Akbari Noghabi
- Department of Industrial and Environmental Biotechnology, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
| | - Tala Bakhtiary
- Extremophiles Laboratory, Department of Microbiology, School of Biology and Center of Excellence in Phylogeny of Living Organisms, College of Science, University of Tehran, Tehran, Iran
| | - Antonio Ventosa
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville, Spain
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22
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Hossain N, Mahlia TMI. Progress in physicochemical parameters of microalgae cultivation for biofuel production. Crit Rev Biotechnol 2019; 39:835-859. [DOI: 10.1080/07388551.2019.1624945] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Nazia Hossain
- Department of Civil and Infrastructure Engineering, School of Engineering, RMIT University, Melbourne, VIC, Australia
| | - Teuku Meurah Indra Mahlia
- School of Information, Systems and Modelling, Faculty of Engineering and Information Technology, University of Technology Sydney, Sydney, NSW, Australia
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Chandra R, Ghosh UK. Effects of various abiotic factors on biomass growth and lipid yield of Chlorella minutissima for sustainable biodiesel production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:3848-3861. [PMID: 30539390 DOI: 10.1007/s11356-018-3696-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 11/06/2018] [Indexed: 06/09/2023]
Abstract
In this study, effects of different abiotic factors were studied on biomass and lipid yield of green microalga Chlorella minutissima (C. minutissima) Various concentrations of abiotic factors like nitrogen, phosphorus, glucose, iron, zinc, different values of pH, temperature, light intensity and different photoperiods were observed on the biomass growth and lipid yield of C. minutissima cultivated with modified CHU-13 medium. Initially, three cultivation media namely, Bold's basal medium (BBM), modified CHU-13 and blue-green-11 (BG-11) were used to culture C. minutissima in batch mode. Microalga cultivated with modified CHU-13 medium resulted in maximum biomass and lipid yield of 970 ± 0.21 and 356.63 ± 0.51 mg/L, respectively. To maximize biomass and lipid yield of microalga further, it was cultivated with modified CHU-13 medium and variation of above mentioned abiotic factors was done. Different biomass and lipid yields were achieved for different abiotic factors varied. Highest biomass of 1840.49 ± 0.62 mg/L was achieved with 12 g of glucose containing medium and highest lipid yield of 579.86 ± 0.76 mg/L was achieved with 0.3 g of nitrogen containing medium. GC-MS analysis of biodiesel obtained from C. minutissima biomass cultivated with modified CHU-13 medium shown the presence of C14:0, C16:0, C16:1, C18:0, C18:1, C18:2, C18:3, C20:0, C20:1 and C22:0. Properties of biodiesel obtained from C. minutissima were found in compliance with ASTM-6751-02 and European biodiesel standards EN14214. These results suggest that C. minutissima can be used as a potential biodiesel feedstock for microalgal biodiesel production.
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Affiliation(s)
- Rajesh Chandra
- Bioenergy Research Laboratory, Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee (Saharanpur Campus), Saharanpur, Uttar Pradesh, 247001, India.
| | - Uttam Kumar Ghosh
- Bioenergy Research Laboratory, Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee (Saharanpur Campus), Saharanpur, Uttar Pradesh, 247001, India
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Parichehreh R, Gheshlaghi R, Mahdavi MA, Elkamel A. Optimization of lipid production in Chlorella vulgaris for biodiesel production using flux balance analysis. Biochem Eng J 2019. [DOI: 10.1016/j.bej.2018.10.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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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 & BIOENERGY 2019. [DOI: 10.1016/j.biombioe.2018.12.009] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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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]
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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: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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28
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Fatty Acids, Hydrocarbons and Terpenes of Nannochloropsis and Nannochloris Isolates with Potential for Biofuel Production. ENERGIES 2018. [DOI: 10.3390/en12010130] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Marine microalgae are a promising feedstock for biofuel production given their high growth rates and biomass production together with cost reductions due to the use of seawater for culture preparation. However, different microalgae species produce different families of compounds. Some compounds could be used directly as fuels, while others require thermochemical processing to obtain quality biofuels. This work focuses on the characterization of three marine microalgae strains native in Mexico and reported for the first time. Ultrastructure and phylogenetic analysis, suggested that they belong to Nannochloropsis sp. (NSRE-1 and NSRE-2) and Nannochloris sp. (NRRE-1). The composition of their lipid fractions included hydrocarbons, triacylglycerides (TAGs), free fatty acids (FFAs) and terpenes. Based on theoretical estimations from TAG and FFA composition, the potential biodiesels were found to comply with six of the seven estimated properties (ASTM D6751 and EN 14214). On the other hand, hydrocarbons and terpenes synthesized by the strains have outstanding potential as precursors for the production of other renewable fuels, mainly green diesel and bio-jet fuel, which are “drop-in” fuels with quality properties similar to fossil fuels. The validity of this theoretical analysis was demonstrated for the oxygenates of strain NSRE-2, which were experimentally hydrodeoxygenated, obtaining a high-quality renewable diesel as the reaction product.
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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: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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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: 12] [Impact Index Per Article: 2.0] [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.
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Prospecting for Oleaginous and Robust Chlorella spp. for Coal-Fired Flue-Gas-Mediated Biodiesel Production. ENERGIES 2018. [DOI: 10.3390/en11082026] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Prospecting for robust and high-productivity strains is a strategically important step in the microalgal biodiesel process. In this study, 30 local strains of Chlorella were evaluated in photobioreactors for biodiesel production using coal-fired flue-gas. Three strains (M082, M134, and KR-1) were sequentially selected based on cell growth, lipid content, and fatty acid composition under autotrophic and mixotrophic conditions. Under autotrophic conditions, M082 and M134 showed comparable lipid contents (ca. 230 mg FAME [fatty acid methyl esters derived from microalgal lipids]/g cell) and productivities (ca. 40 mg FAME/L·d) versus a reference strain (KR-1) outdoors with actual flue-gas (CO2, 13%). Interestingly, under mixotrophic conditions, M082 demonstrated, along with maximal lipid content (397 mg FAME/g cell), good tolerance to high temperature (40 °C). Furthermore, the fatty acid methyl esters met important international standards under all of the tested culture conditions. Thus, it was concluded that M082 can be a feedstock of choice for coal-fired, flue-gas-mediated biodiesel production.
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Abomohra AEF, El-Naggar AH, Baeshen AA. Potential of macroalgae for biodiesel production: Screening and evaluation studies. J Biosci Bioeng 2018; 125:231-237. [PMID: 29037768 DOI: 10.1016/j.jbiosc.2017.08.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 07/30/2017] [Accepted: 08/17/2017] [Indexed: 11/25/2022]
Abstract
Nowadays, biofuel production is a fast expanding industry and is facing a growing dilemma about a feedstock source capable of keeping up with demand. Recently, macroalgae have been attracting a wide attention as a source for biofuel. In the present study, ten macroalgae were collected and screened as biodiesel feedstocks. As a result of their high biomass production and relatively high lipid content, Ulva lactuca, Padina boryana and Ulva intestinalis showed the highest significant lipids and fatty acid methyl esters (FAMEs) areal productivities among the studied species. Saturated fatty acids (SAFs) showed insignificant differences in the selected species, with noticeably significant higher polyunsaturated fatty acids (PUFAs) content in U. lactuca by 4.2 and 3 times, with respect to P. boryana and U. intestinalis, respectively. The recorded increase in PUFAs was attributed to higher content of C16:4n-3, C18:3n-3 and C18:4n-3. By lipid fractionation, P. boryana showed significant higher concentration of neutral lipids (37.7 mg g-1 CDW, representing 46.7% of total fatty acids) in comparison to U. lactuca and U. intestinalis, which showed 16% and 17% lower neutral lipid fractions, respectively. In addition, biodiesel characteristics of the studied macroalgae complied with that of international standards. Furthermore, oil-free residual biomass can be readily converted into fermentable sugars or biogas due to its high carbohydrates content, which adds to the economics of macroalgae as biofuel feedstock. In conclusion, the present study confirmed that macroalgae represent an attractive alternative renewable feedstock for biodiesel and other biofuels.
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Affiliation(s)
- Abd El-Fatah Abomohra
- New Energy Department, School of Energy and Power Engineering, Jiangsu University, 212013 Jiangsu, China; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt.
| | - Amal Hamed El-Naggar
- Biological Science Department, Science Faculty for Girls, King Abdulaziz University, Jeddah 21589, Saudi Arabia; Botany Department, Faculty of Science, Tanta University, Tanta 31527, Egypt
| | - Areej Ali Baeshen
- Biological Science Department, Science Faculty for Girls, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Lipid enhancement in microalgae by temporal phase separation: Use of indigenous sources of nutrients. Chin J Chem Eng 2018. [DOI: 10.1016/j.cjche.2017.03.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Chandra R, Ghosh UK, Nayak JK. Phycoremediation potential of marine microalga Tetraselmis indica on secondary treated domestic sewage for nutrient removal and biodiesel production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:20868-20875. [PMID: 28721615 DOI: 10.1007/s11356-017-9734-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 07/07/2017] [Indexed: 06/07/2023]
Abstract
Marine microalga Tetraselmis indica (T. indica) was cultivated in secondary treated domestic sewage (STDS) in batch mode. Optimization studies showed that after 14 days of cultivation period, highest biomass yield reached was 0.88 ± 0.04 g/L at the optimum temperature of 27 ± 1 °C and light intensity of 135 μmol m-2 s-1. T. indica removed about 60.93% phosphate, 78.46% nitrate, 72.94% chemical oxygen demand (COD), 73.17% biological oxygen demand (BOD), 98.90% total dissolved solids (TDS) and heavy metals (83.11% Cd, 55.67% Ca, 45.12% Cu, 13.67% Mn, 50.88% Pb, and 98.92% Al) from STDS. The level of electrical conductivity was reduced to 0.0974 ± 0.045 dS/m. The fatty acid methyl ester (FAME) profile showed the presence of palmitic acid (12.91%), oleic acid (35.94%), linoleic acid (14.89%) and eicosanoic acid (12.34%). This study indicates the potential of T. indica for removal of pollutants from STDS and also its capability of biodiesel production.
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Affiliation(s)
- Rajesh Chandra
- Bioenergy Research Laboratory, Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh, 247001, India
| | - Uttam Kumar Ghosh
- Bioenergy Research Laboratory, Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh, 247001, India
| | - Jagdeep Kumar Nayak
- Bioenergy Research Laboratory, Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Saharanpur Campus, Saharanpur, Uttar Pradesh, 247001, India
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Mohd-Sahib AA, Lim JW, Lam MK, Uemura Y, Isa MH, Ho CD, Kutty SRM, Wong CY, Rosli SS. Lipid for biodiesel production from attached growth Chlorella vulgaris biomass cultivating in fluidized bed bioreactor packed with polyurethane foam material. BIORESOURCE TECHNOLOGY 2017; 239:127-136. [PMID: 28501685 DOI: 10.1016/j.biortech.2017.04.118] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 04/26/2017] [Accepted: 04/28/2017] [Indexed: 06/07/2023]
Abstract
The potential to grow attached microalgae Chlorella vulgaris in fluidized bed bioreactor was materialized in this study, targeting to ease the harvesting process prior to biodiesel production. The proposed thermodynamic mechanism and physical property assessment of various support materials verified polyurethane to be suitable material favouring the spontaneous adhesion by microalgae cells. The 1-L bioreactor packed with only 2.4% (v/v) of 1.00-mL polyurethane foam cubes could achieve the highest attached growth microalgae biomass and lipid weights of 812±122 and 376±37mg, respectively, in comparison with other cube sizes. The maturity of attached growth microalgae biomass for harvesting could also be determined from the growth trend of suspended microalgae biomass. Analysis of FAME composition revealed that the harvested microalgae biomass was dominated by C16-C18 (>60%) and mixture of saturated and mono-unsaturated fatty acids (>65%), satiating the biodiesel standard with adequate cold flow property and oxidative stability.
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Affiliation(s)
- Ainur-Assyakirin Mohd-Sahib
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Jun-Wei Lim
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia.
| | - Man-Kee Lam
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Yoshimitsu Uemura
- Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Mohamed Hasnain Isa
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Chii-Dong Ho
- Department of Chemical and Materials Engineering, Tamkang University, Tamsui, New Taipei City 251, Taiwan
| | - Shamsul Rahman Mohamed Kutty
- Department of Civil and Environmental Engineering, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Chung-Yiin Wong
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Siti-Suhailah Rosli
- Department of Fundamental and Applied Sciences, Universiti Teknologi PETRONAS, 32610 Seri Iskandar, Perak Darul Ridzuan, Malaysia
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Ali SS, Abomohra AEF, Sun J. Effective bio-pretreatment of sawdust waste with a novel microbial consortium for enhanced biomethanation. BIORESOURCE TECHNOLOGY 2017; 238:425-432. [PMID: 28458176 DOI: 10.1016/j.biortech.2017.03.187] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2017] [Revised: 03/28/2017] [Accepted: 03/30/2017] [Indexed: 05/25/2023]
Abstract
Anaerobic digestion (AD) is considered an efficient cost-effective technology for sustainable biogas production from lignocellulosic wastes. A novel lignocellulosic degradation microbial consortium (LCDC) was isolated from rotten sawdust, and further used for sawdust pretreatment prior to AD. Results showed that pretreatment of sawdust for 10days led to significant reduction in cellulose, hemicelluloses, and lignin contents by 37.5%, 39.6%, and 56.7%, respectively, with respect to the control. In addition, the pretreatment enhanced cumulative biogas yield, which reached its maximum value of 312.0Lkg-1VS after 28days of AD (25.6% higher than the corresponding control). Moreover, the maximum significant cumulative methane yield was recorded after 28days of AD of the pretreated sawdust (155.2Lkg-1VS), which represented 72.6% higher than the corresponding control. Significantly higher biomethane yield from sawdust pretreated with LCDC confirms that this process is more economical than the previous reports.
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Affiliation(s)
- Sameh S Ali
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, 212013 Zhenjiang, China; Botany Department, Faculty of Science, Tanta University, 31527 Tanta, Egypt
| | - Abd El-Fatah Abomohra
- School of Energy and Power Engineering, Jiangsu University, 212013 Zhenjiang, China; Botany Department, Faculty of Science, Tanta University, 31527 Tanta, Egypt
| | - Jianzhong Sun
- Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, 212013 Zhenjiang, China.
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