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Jadhav HB, Choudhary P, Deshmukh ND, Singh DK, Das M, Das A, Sai NCS, Muthusamy G, Annapure US, Ramniwas S, Mugabi R, Nayik GA. Advancements in non-thermal technologies for enhanced extraction of functional triacylglycerols from microalgal biomass: A comprehensive review. Food Chem X 2024; 23:101694. [PMID: 39184314 PMCID: PMC11342120 DOI: 10.1016/j.fochx.2024.101694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 07/22/2024] [Accepted: 07/22/2024] [Indexed: 08/27/2024] Open
Abstract
Microalgae have emerged as a storehouse of biologically active components having numerous health benefits that can be used in the formulation of nutraceuticals, and functional foods, for human consumption. Among these biologically active components, functional triacylglycerols are increasingly attracting the attention of researchers owing to their beneficial characteristics. Microalgae are excellent sources of triacylglycerol containing omega-3 and omega-6 fatty acids and can be used by the vegan population as a replacement for fish oil. The functional triacylglycerols extracted using conventional processes have various drawbacks resulting in lower yield and inferior quality products. The non-thermal technologies are emerging as user-friendly and environment-friendly technologies that intensify the yield of final products and maintain the high purity of extracted products that can be used in food, cosmetic, pharmaceutical, and nutraceutical applications. The present review focuses on major non-thermal technologies that can probably be used for the extraction of high-quality functional triacylglycerols from microalgae.
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Affiliation(s)
- Harsh B. Jadhav
- Department of Food Technology, Amity Institute of Biotechnology, Amity University, Jaipur, India
| | - Pintu Choudhary
- Department of Food Technology, CBL Government Polytechnic Sector 13, HUDA, Bhiwani, Haryana 127021, India
| | - Nikhil D. Deshmukh
- Department of Food Engineering and Technology, Sant Longowal Institute of Engineering and Technology, Sangrur, India
| | - Dhananjay Kumar Singh
- Department of Food Engineering and Technology, Sant Longowal Institute of Engineering and Technology, Sangrur, India
| | - Moumita Das
- Department of Food and Nutrition, Swami Vivekananda University, Barrackpore, Kolkata, India
| | - Arpita Das
- Department of Food and Nutrition, Brainware University, Kolkata, India
| | - Nadiminti Chandana Sri Sai
- Department of Dairy Sciences and Food Technology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, India
| | - Gayathri Muthusamy
- Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu, India
| | - Uday S. Annapure
- Department of Food Engineering and Technology, Institute of Chemical Technology, Matunga, Mumbai 400019, India
| | - Seema Ramniwas
- University Centre for Research and Development, Chandigarh University Gharuan, Mohali, Punjab, India
| | - Robert Mugabi
- Department of Food Technology and Nutrition, Makerere University, Kampala, Uganda
| | - Gulzar Ahmad Nayik
- Department of Microbiology, Marwadi University, Rajkot, Gujarat 360003, India
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2
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Bello M, A K M, D E A B, A A M, Ranganathan P. Sustainable algal biorefinery: A review on current perspective on technical maturity, supply infrastructure, business and industrial opportunities. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 370:122208. [PMID: 39243640 DOI: 10.1016/j.jenvman.2024.122208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 08/10/2024] [Accepted: 08/11/2024] [Indexed: 09/09/2024]
Abstract
The environmental problems associated with the use of fossil fuels demand a transition to renewable sources for fuels and energy. A biorefinery approach has often been considered and microalgae as a feedstock has been pampered for its numerous possibilities to produce biofuels. Depending on the species and cultivation conditions, microalgae can produce fats, proteins and sugars. These raw materials can thus be utilized in the production of biofuels, bioenergy and biochemicals. For this reason, algal biofuels are considered as sustainable and renewable options for climate related challenges. However, there are many issues such as supply infrastructure, business and refinery opportunities, as well as their efficacy, tied to sustainable production of these energetic materials from algae. Thus, technical maturity, scalability, energy and material balance demands coupled with cost, nutrient resources demand, certification and legislation are needed to demonstrate the biorefinery opportunities of algal biomass valorisation. This paper therefore recommends that various consortiums tasked with algal biofuel projects should be chosen for a more holistic integrated multidisciplinary approach to address the advancement of algal biofuel technology.
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Affiliation(s)
- Muhammadu Bello
- Department of Chemistry, Shehu Shagari College of Education, Sokoto, Nigeria.
| | - Modu A K
- Department of Industrial Chemistry, Abubakar Tafawa University, Bauchi ATBU, Nigeria
| | - Boryo D E A
- Department of Industrial Chemistry, Abubakar Tafawa University, Bauchi ATBU, Nigeria
| | - Mahmoud A A
- Department of Industrial Chemistry, Abubakar Tafawa University, Bauchi ATBU, Nigeria
| | - Panneerselvam Ranganathan
- Department of Chemical Engineering, National Institute of Technology Calicut, Kozhikode-673601, India
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3
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Cagney MH, O'Neill EC. Strategies for producing high value small molecules in microalgae. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 214:108942. [PMID: 39024780 DOI: 10.1016/j.plaphy.2024.108942] [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: 03/01/2024] [Revised: 06/11/2024] [Accepted: 07/15/2024] [Indexed: 07/20/2024]
Abstract
Eukaryotic microalgae are a diverse group of organisms that can be used for the sustainable production of a wide range of high value compounds, including lipids, flavours and dyes, bioplastics, and cosmetics. Optimising total biomass production often does not lead to optimal product yield and more sophisticated biphasic growth strategies are needed, introducing specific stresses to induce product synthesis. Genetic tools have been used to increase yields of natural products or to introduce new pathways to algae, and wider deployment of these tools offers promising routes for commercial production of high value compounds utilising minimal inputs.
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Affiliation(s)
- Michael H Cagney
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK; Biodiscovery Institute, University of Nottingham, University Park, Nottingham, NG7 2RD, UK
| | - Ellis C O'Neill
- School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK; Biodiscovery Institute, University of Nottingham, University Park, Nottingham, NG7 2RD, UK.
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4
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Soudagar MEM, Kiong TS, Jathar L, Nik Ghazali NN, Ramesh S, Awasarmol U, Ong HC. Perspectives on cultivation and harvesting technologies of microalgae, towards environmental sustainability and life cycle analysis. CHEMOSPHERE 2024; 353:141540. [PMID: 38423144 DOI: 10.1016/j.chemosphere.2024.141540] [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: 08/09/2023] [Revised: 12/18/2023] [Accepted: 02/23/2024] [Indexed: 03/02/2024]
Abstract
The development of algae is seen as a potential and ecologically sound approach to address the increasing demands in multiple sectors. However, successful implementation of processes is highly dependent on effective growing and harvesting methods. The present study provides a complete examination of contemporary techniques employed in the production and harvesting of algae, with a particular emphasis on their sustainability. The review begins by examining several culture strategies, encompassing open ponds, closed photobioreactors, and raceway ponds. The analysis of each method is conducted in a systematic manner, with a particular focus on highlighting their advantages, limitations, and potential for expansion. This approach ensures that the conversation is in line with the objectives of sustainability. Moreover, this study explores essential elements of algae harvesting, including the processes of cell separation, dewatering, and biomass extraction. Traditional methods such as centrifugation, filtration, and sedimentation are examined in conjunction with novel, environmentally concerned strategies including flocculation, electro-coagulation, and membrane filtration. It evaluates the impacts on the environment that are caused by the cultivation process, including the usage of water and land, the use of energy, the production of carbon dioxide, and the runoff of nutrients. Furthermore, this study presents a thorough examination of the current body of research pertaining to Life Cycle Analysis (LCA) studies, presenting a perspective that emphasizes sustainability in the context of algae harvesting systems. In conclusion, the analysis ends up with an examination ahead at potential areas for future study in the cultivation and harvesting of algae. This review is an essential guide for scientists, policymakers, and industry experts associated with the advancement and implementation of algae-based technologies.
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Affiliation(s)
- Manzoore Elahi M Soudagar
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, Malaysia; Department of Mechanical Engineering, Graphic Era (Deemed to be University), Dehradun, Uttarakhand - 248002, India; Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Thi-Qar, Nasiriyah, 64001, Iraq.
| | - Tiong Sieh Kiong
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, Malaysia.
| | - Laxmikant Jathar
- Department of Mechanical Engineering, Army Institute of Technology, Pune, 411015, India.
| | - Nik Nazri Nik Ghazali
- Department of Mechanical Engineering, Faculty of Engineering, University Malaya, 50603 Kuala Lumpur, Malaysia.
| | - S Ramesh
- Institute of Sustainable Energy (ISE), Universiti Tenaga Nasional, Jalan IKRAM-UNITEN, 43000 Kajang, Selangor, Malaysia; Department of Mechanical Engineering, Faculty of Engineering, University Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Umesh Awasarmol
- Department of Mechanical Engineering, Army Institute of Technology, Pune, 411015, India.
| | - Hwai Chyuan Ong
- Department of Engineering, School of Engineering and Technology, Sunway University, Jalan Universiti, Bandar Sunway, 47500, Selangor, Malaysia.
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5
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Zhang X, Zhang Z, Peng Y, Zhang Y, Li Q, Sun D. Salicylic acid enhances cell growth, fatty acid and astaxanthin production in heterotrophic Chromochloris zofingiensis without reactive oxygen species elevation. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2024; 17:1. [PMID: 38172878 PMCID: PMC10765886 DOI: 10.1186/s13068-023-02449-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 12/13/2023] [Indexed: 01/05/2024]
Abstract
BACKGROUND The induction of lipid and astaxanthin accumulation in microalgae is often achieved through abiotic stress. However, this approach usually leads to oxidative stress, which results in relatively low growth rate. Phytohormones, as important small molecule signaling substances, not only affect the growth and metabolism of microalgae but also influence the intracellular reactive oxygen species level. This study aimed to screen phytohormones that could promote the fatty acids and astaxanthin yield of heterotrophic Chromochloris zofingiensis without causing oxidative damage, and further investigate the underlying mechanisms. RESULTS In the present study, among all the selected phytohormones, the addition of exogenous salicylic acid (SA) could effectively promote cell growth along with the yield of total fatty acids (TFA) and astaxanthin in heterotrophic C. zofingiensis. Notably, the highest yields of TFA and astaxanthin were achieved at 100 μM SA, 43% and 97.2% higher compared with the control, respectively. Interestingly, the intracellular reactive oxygen species (ROS) levels, which are usually increased with elevated TFA content under abiotic stresses, were significantly decreased by SA treatment. Comparative transcriptome analysis unveiled significant alterations in overall carbon metabolism by SA. Specifically, the upregulation of fatty acid synthesis pathway, upregulation of β-carotene-4-ketolase (BKT) in carotenoid synthesis aligned with biochemical findings. Weighted gene co-expression network analysis highlighted ABC transporters and GTF2B-like transcription factor as potential key regulators. CONCLUSION This study found that salicylic acid can serve as an effective regulator to promote the celling growth and accumulation of fatty acids and astaxanthin in heterotrophic C. zofingiensis without ROS elevation, which provides a promising approach for heterotrophic production of TFA and astaxanthin without growth inhibition.
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Affiliation(s)
- Xinwei Zhang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
- School of Life Sciences, Hebei University, Baoding, 071000, China
| | - Zhao Zhang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China
- School of Life Sciences, Hebei University, Baoding, 071000, China
- Institute of Life Sciences and Green Development, Hebei University, Baoding, 071000, China
| | - Yanmei Peng
- School of Life Sciences, Hebei University, Baoding, 071000, China
| | - Yushu Zhang
- School of Life Sciences, Hebei University, Baoding, 071000, China
| | - Qingyang Li
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China.
| | - Dongzhe Sun
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, China.
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6
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Amouri M, Aziza M, Kaidi F, Abert Vian M, Chemat F, Amrane A, Assunção MFG, Santos LMA, Ounnar A, Zitouni D, Berrached A. Indigenous microalgae strains characterization for a sustainable biodiesel production. Biotechnol J 2024; 19:e2300096. [PMID: 38050663 DOI: 10.1002/biot.202300096] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 12/06/2023]
Abstract
Microalgae have been widely recognized as a promising feedstock for sustainable biofuels production to tackle global warming and pollution issues related to fossil fuels uses. This study identified and analyzed indigenous microalgae strains for biodiesel production, specifically Chlorella vulgaris and Coelastrella thermophila var. globulina, from two distinct locations in Algeria. Molecular identification confirmed their identity, and the microalgae exhibited notable growth characteristics. Local Chlorella vulgaris and Coelastrella thermophila var. globulina showed good growth and high biomass yield, compared to Chlorella vulgaris CCAP211/11B reaching a weight of 1.48 g L-1 , 1.95 g L-1 , and 2.10 g L-1 , respectively. Lipids content of local Chlorella vulgaris, Coelastrella thermophila var. globulina, and Chlorella vulgaris CCAP211/11B, were found to be 31.39 ± 3.3%, 17 ± 2.26%, and 19 ± 0.64%, respectively. Chlorella vulgaris stood out as a candidate for biodiesel production due to its equilibrium between SFA and PUFA (43.24% and 45.27%). FAs are predominated by SFA and MUFA for Coelastrella thermophila var. globulina with value of 81.49% (SFA+MUFA). Predicted biodiesel qualities comply with ASTM6751 and EN14214 standards. Studied microalgae have therefore a promising potential for biodiesel production. However, optimising cultivation conditions is necessary to enhance biomass and lipids yield at a large scale.
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Affiliation(s)
- Mohammed Amouri
- Centre de Développement des Energies Renouvelables, CDER, BP. 62 Route de l'Observatoire, Bouzaréah, Algiers, Algeria
| | - Majda Aziza
- Centre de Développement des Energies Renouvelables, CDER, BP. 62 Route de l'Observatoire, Bouzaréah, Algiers, Algeria
| | - Fayrouz Kaidi
- Centre de Développement des Energies Renouvelables, CDER, BP. 62 Route de l'Observatoire, Bouzaréah, Algiers, Algeria
| | | | - Farid Chemat
- GREEN Extraction Team, INRAE, UMR 408, Avignon University, Avignon, France
| | - Abdeltif Amrane
- Univ Rennes, Ecole Nationale Supérieure de Chimie de Rennes, CNRS, ISCR-UMR 6226, Rennes, France
| | - Mariana F G Assunção
- Coimbra Collection of Algae (ACOI), Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal
| | - Lília M A Santos
- Coimbra Collection of Algae (ACOI), Department of Life Sciences, Calçada Martim de Freitas, University of Coimbra, Coimbra, Portugal
| | - Amel Ounnar
- Centre de Développement des Energies Renouvelables, CDER, BP. 62 Route de l'Observatoire, Bouzaréah, Algiers, Algeria
| | - Dalila Zitouni
- Centre de Développement des Energies Renouvelables, CDER, BP. 62 Route de l'Observatoire, Bouzaréah, Algiers, Algeria
| | - Abdessalam Berrached
- Centre de Développement des Energies Renouvelables, CDER, BP. 62 Route de l'Observatoire, Bouzaréah, Algiers, Algeria
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7
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Luo Y, Ding Y, Jiang X, Zeng G, Peng R, Han Q, Jiang M. Effects of low temperature and highlight stress on lipid accumulation and cell structure of Tropidoneis maxima. J Basic Microbiol 2023; 63:1139-1152. [PMID: 37339809 DOI: 10.1002/jobm.202300092] [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: 02/28/2023] [Revised: 04/25/2023] [Accepted: 06/02/2023] [Indexed: 06/22/2023]
Abstract
Tropidoneis maxima is a marine diatom with a rapid growth rate that produces high levels of lipids. To explore whether the lipid content could be further enhanced, cultures were first incubated under optimal conditions and then stressed under low temperature (10°C), a high light intensity level (80 μmol/m2 ·s), and the two factors together (interaction treatment). The results indicated that high light intensity and the temperature-light interaction exhibited greater impacts on lipid synthesis of T. maxima than low temperature. The two stress treatments increased lipid content by 17.16% and 16.6% compared to the control. In particular, higher biomass concentration was obtained with high light intensity (1.082 g L-1 ) and low temperature (1.026 g L-1 ). Moreover, high light intensity (9.06%) and interaction (10.3%) treatments yielded lower starch content compared to low temperature (14.27%) at the end of the stress culture. After 3 days of stress culture, the high light intensity treatment resulted in a 97.01% increase in cell wall thickness and an 18.46% decrease in cell diameter. The results suggest that high light intensity stress on T. maxima would open a new approach to cost-effective biolipid production.
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Affiliation(s)
- Yuanyuan Luo
- Key Laboratory of Applied Marine Biotechnology, School of Marine Sciences, Ningbo University, Ningbo, China
| | - Yuhui Ding
- Key Laboratory of Applied Marine Biotechnology, School of Marine Sciences, Ningbo University, Ningbo, China
| | - Xiamin Jiang
- Key Laboratory of Applied Marine Biotechnology, School of Marine Sciences, Ningbo University, Ningbo, China
| | - Guoquan Zeng
- Zhejiang Mariculture Research Institute, Wenzhou, China
| | - Ruibing Peng
- Key Laboratory of Applied Marine Biotechnology, School of Marine Sciences, Ningbo University, Ningbo, China
| | - Qingxi Han
- Key Laboratory of Applied Marine Biotechnology, School of Marine Sciences, Ningbo University, Ningbo, China
| | - Maowang Jiang
- Key Laboratory of Applied Marine Biotechnology, School of Marine Sciences, Ningbo University, Ningbo, China
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8
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Talhami M, Mussa AA, Thaher MI, Das P, Abouelela AR, Hawari AH. Efficient extraction of lipids from microalgal biomass for the production of biofuels using low-cost protic ionic solvents. Biochem Eng J 2023. [DOI: 10.1016/j.bej.2023.108902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
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9
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Optimization of a two-phase culture system of Chlamydomonas hedleyi using light-emitting diodes and potential as a biodiesel feedstock. Process Biochem 2023. [DOI: 10.1016/j.procbio.2023.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
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10
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Ghaffar I, Deepanraj B, Sundar LS, Vo DVN, Saikumar A, Hussain A. A review on the sustainable procurement of microalgal biomass from wastewaters for the production of biofuels. CHEMOSPHERE 2023; 311:137094. [PMID: 36334745 DOI: 10.1016/j.chemosphere.2022.137094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 10/22/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
The feasibility of microalgal biomass as one of the most promising and renewable sources for the production of biofuels is being studied extensively. Microalgal biomass can be cultivated under photoautotrophic, heterotrophic, photoheterotrophic, and mixotrophic cultivation conditions. Photoautotrophic cultivation is the most common way of microalgal biomass production. Under mixotrophic cultivation, microalgae can utilize both organic carbon and CO2 simultaneously. Mixotrophic cultivation depicts higher biomass productivity as compared to photoautotrophic cultivation. It is evident from the literature that mixotrophic cultivation yields higher quantities of polyunsaturated fatty acids as compared to that photoautotrophic cultivation. In this context, for economical biomass production, the organic carbon of industrial wastewaters can be valorized for the mixotrophic cultivation of microalgae. Following the way, contaminants' load of wastewaters can be reduced while concomitantly producing highly productive microalgal biomass. This review focuses on different aspects covering the sustainable cultivation of different microalgal species in different types of wastewaters.
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Affiliation(s)
- Imania Ghaffar
- Applied and Environmental Microbiology Laboratory, Department of Wildlife and Ecology, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Balakrishnan Deepanraj
- Department of Mechanical Engineering, College of Engineering, Prince Mohammad Bin Fahd University, Al Khobar, Saudi Arabia.
| | - Lingala Syam Sundar
- Department of Mechanical Engineering, College of Engineering, Prince Mohammad Bin Fahd University, Al Khobar, Saudi Arabia
| | - Dai-Viet N Vo
- Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| | - Algam Saikumar
- Department of Aeronautical Engineering, MLR Institute of Technology, Hyderabad, Telangana, India
| | - Ali Hussain
- Applied and Environmental Microbiology Laboratory, Institute of Zoology, University of the Punjab, Lahore, Pakistan.
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11
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Shayesteh H, Vadiveloo A, Bahri PA, Moheimani NR. Long term outdoor microalgal phycoremediation of anaerobically digested abattoir effluent. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2022; 323:116322. [PMID: 36261972 DOI: 10.1016/j.jenvman.2022.116322] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/10/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Sufficient and reliable long-term field data on the growth, productivity and nutrient removal rates of microalgal based wastewater treatment system is essential to validate its overall techno-economic feasibility. Here, we investigated the semi-continuous microalgal cultivation of Scenedesmus sp. in anaerobically digested abattoir effluent (ADAE) for 13 months in outdoor raceway ponds operated at 20 cm depth. This study was initiated with three different cultures consisting of 1) monocultures of Chlorella sp., 2) Scenedesmus sp., and 3) an equal mixed concentration of both microalgae species. However, after 15 weeks, Scenedesmus sp. was found to be the most dominant microalgae species in all the different cultures, even completely taking over the Chlorella sp. monoculture. Over the course of summer and early autumn, the average weekly biomass productivity of Scenedesmus sp. cultures was 12.5 ± 0.6 g m-2 d-1 which was 16% and 30% higher than productivities recorded in spring and winter, respectively. All available ammoniacal nitrogen (NH3-N) was found to be exhausted during each growth period with an average 33.6% nitrogen assimilation rate. The average rate of phosphate and COD (chemical oxygen demand) removals were 85.2% and 37.5% throughout the cultivation period. No significant differences were found in carbohydrate, lipid and protein content of Scenedesmus sp. during different seasons of the year. Over 53% increase in biomass productivity can be achieved if CO2 is added to control culture pH at pH 6.5. Here, we successfully demonstrated reliability of continuous long-term cultivation of microalgae in ADAE for simultaneous wastewater treatment and algal biomass production.
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Affiliation(s)
- Hajar Shayesteh
- Algae R&D Centre, Discipline of Environmental and Conservation Sciences, Murdoch University, WA, 6150, Australia
| | - Ashiwin Vadiveloo
- Algae R&D Centre, Discipline of Environmental and Conservation Sciences, Murdoch University, WA, 6150, Australia; Centre for Water, Energy and Waste, Harry Butler Institute, Murdoch University, Murdoch, WA, 6150, Australia
| | - Parisa A Bahri
- Discipline of Engineering and Energy, Murdoch University, 90 South Street, Murdoch, WA, 6150, Australia; Centre for Water, Energy and Waste, Harry Butler Institute, Murdoch University, Murdoch, WA, 6150, Australia
| | - Navid R Moheimani
- Algae R&D Centre, Discipline of Environmental and Conservation Sciences, Murdoch University, WA, 6150, Australia; Centre for Water, Energy and Waste, Harry Butler Institute, Murdoch University, Murdoch, WA, 6150, Australia.
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12
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Carone M, Alpe D, Costantino V, Derossi C, Occhipinti A, Zanetti M, Riggio VA. Design and characterization of a new pressurized flat panel photobioreactor for microalgae cultivation and CO 2 bio-fixation. CHEMOSPHERE 2022; 307:135755. [PMID: 35868532 DOI: 10.1016/j.chemosphere.2022.135755] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 06/14/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Microalgae-based biorefinery processes are gaining particular importance as a biotechnological tool for direct carbon dioxide fixation and production of high-quality biomass and energy feedstock for different industrial markets. However, despite the many technological advances in photobioreactor designs and operations, microalgae cultivation is still limited due to the low yields achieved in open systems and to the high investment and operation costs of closed photobioreactors. In this work, a new alveolar flat panel photobioreactor was designed and characterized with the aim of achieving high microalgae productivities and CO2 bio-fixation rates. Moreover, the energy efficiency of the employed pump-assisted hydraulic circuit was evaluated. The 1.3 cm thick alveolar flat-panels enhance the light utilization, whereas the hydraulic design of the photobioreactor aims to improve the global CO2 gas-liquid mass transfer coefficient (kLaCO2). The mixing time, liquid flow velocity, and kLaCO2 as well as the uniformity matrix of the artificial lighting source were experimentally calculated. The performance of the system was tested by cultivating the green microalga Acutodesmus obliquus. A volumetric biomass concentration equal to 1.9 g L-1 was achieved after 7 days under controlled indoor cultivation conditions with a CO2 bio-fixation efficiency of 64% of total injected CO2. The (gross) energy consumption related to substrate handling was estimated to be between 27 and 46 Wh m-3, without any cost associated to CO2 injection and O2 degassing. The data suggest that this pilot-scale cultivation system may constitute a relevant technology in the development of microalgae-based industrial scenario for CO2 mitigation and biomass production.
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Affiliation(s)
- Michele Carone
- Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129, Torino, Italy.
| | - Davis Alpe
- Photo B-Otic S.r.l., Via Paolo Veronese 202, 10148, Torino, Italy
| | - Valentina Costantino
- Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129, Torino, Italy
| | - Clara Derossi
- Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129, Torino, Italy
| | - Andrea Occhipinti
- Abel Nutraceuticals S.r.l., Via Paolo Veronese 202, 10148, Torino, Italy
| | - Mariachiara Zanetti
- Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129, Torino, Italy
| | - Vincenzo A Riggio
- Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129, Torino, Italy
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Ideris F, Zamri MFMA, Shamsuddin AH, Nomanbhay S, Kusumo F, Fattah IMR, Mahlia TMI. Progress on Conventional and Advanced Techniques of In Situ Transesterification of Microalgae Lipids for Biodiesel Production. ENERGIES 2022; 15:7190. [DOI: 10.3390/en15197190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Global warming and the depletion of fossil fuels have spurred many efforts in the quest for finding renewable, alternative sources of fuels, such as biodiesel. Due to its auxiliary functions in areas such as carbon dioxide sequestration and wastewater treatment, the potential of microalgae as a feedstock for biodiesel production has attracted a lot of attention from researchers all over the world. Major improvements have been made from the upstream to the downstream aspects related to microalgae processing. One of the main concerns is the high cost associated with the production of biodiesel from microalgae, which includes drying of the biomass and the subsequent lipid extraction. These two processes can be circumvented by applying direct or in situ transesterification of the wet microalgae biomass, hence substantially reducing the cost. In situ transesterification is considered as a significant improvement to commercially produce biodiesel from microalgae. This review covers the methods used to extract lipids from microalgae and various in situ transesterification methods, focusing on recent developments related to the process. Nevertheless, more studies need to be conducted to further enhance the discussed in situ transesterification methods before implementing them on a commercial scale.
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14
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Ubando AT, Anderson S Ng E, Chen WH, Culaba AB, Kwon EE. Life cycle assessment of microalgal biorefinery: A state-of-the-art review. BIORESOURCE TECHNOLOGY 2022; 360:127615. [PMID: 35840032 DOI: 10.1016/j.biortech.2022.127615] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 06/15/2023]
Abstract
Microalgal biorefineries represent an opportunity to economically and environmentally justify the production of bioproducts. The generation of bioproducts within a biorefinery system must quantitatively demonstrate its viability in displacing traditional fossil-based refineries. To this end, several works have conducted life cycle analyses on microalgal biorefineries and have shown technological bottlenecks due to energy-intensive processes. This state-of-the-art review covers different studies that examined microalgal biorefineries through life cycle assessments and has identified strategic technologies for the sustainable production of microalgal biofuels through biorefineries. Different metrics were introduced to supplement life cycle assessment studies for the sustainable production of microalgal biofuel. Challenges in the comparison of various life cycle assessment studies were identified, and the future design choices for microalgal biorefineries were established.
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Affiliation(s)
- Aristotle T Ubando
- Department of Mechanical Engineering, De La Salle University, 2401 Taft Avenue, 0922 Manila, Philippines; Center for Engineering and Sustainable Development Research, De La Salle University, 2401 Taft Avenue, 0922 Manila, Philippines; Thermomechanical Laboratory, De La Salle University, Laguna Campus, LTI Spine Road, Laguna Blvd, Biñan, Laguna 4024, Philippines
| | - Earle Anderson S Ng
- Department of Mechanical Engineering, De La Salle University, 2401 Taft Avenue, 0922 Manila, Philippines
| | - Wei-Hsin Chen
- Department of Aeronautics and Astronautics, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Mechanical Engineering, National Chin-Yi University of Technology, Taichung 411, Taiwan.
| | - Alvin B Culaba
- Department of Mechanical Engineering, De La Salle University, 2401 Taft Avenue, 0922 Manila, Philippines; Center for Engineering and Sustainable Development Research, De La Salle University, 2401 Taft Avenue, 0922 Manila, Philippines
| | - Eilhann E Kwon
- Department of Earth Resources and Environmental Engineering, Hanyang University, Seoul 04763, Republic of Korea
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15
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Shah S, Li X, Jiang Z, Fahad S, Hassan S. Exploration of the phytohormone regulation of energy storage compound accumulation in microalgae. Food Energy Secur 2022. [DOI: 10.1002/fes3.418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Saud Shah
- College of Life Science, Linyi University Linyi City Shandong China
| | - Xiuling Li
- College of Life Science, Linyi University Linyi City Shandong China
| | - Zhaoyu Jiang
- College of Life Science, Linyi University Linyi City Shandong China
| | - Shah Fahad
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource College of Tropical Crops, Hainan University Haikou Hainan China
- Department of Agronomy University of Haripur Haripur Khyber Pakhtunkhwa Pakistan
| | - Shah Hassan
- Department of Agriculture Extenstion The University of Agriculture Peshawar Haripur Khyber Pakhtunkhwa Pakistan
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16
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Selenium-Enriched Spirulina (SeE-SP) Enhance Antioxidant Response, Immunity, and Disease Resistance in Juvenile Asian Seabass, Lates calcarifer. Antioxidants (Basel) 2022; 11:antiox11081572. [PMID: 36009291 PMCID: PMC9404762 DOI: 10.3390/antiox11081572] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/10/2022] [Accepted: 08/11/2022] [Indexed: 12/24/2022] Open
Abstract
The present study examined the efficacy of dietary selenium-enriched spirulina (SeE-SP) on growth performance, antioxidant response, liver and intestinal health, immunity and disease resistance of Asian seabass, Lates calcarifer. A total of 480 seabass juveniles with an initial weight of 9.22 ± 0.09 g/fish were randomly assigned to four dietary groups. The fish were fed a fishmeal protein replacement diets with SeE-SP at 5%, 10%, and 20%, namely SeE-SP5, SeE-SP10, and SeE-SP20, and a fishmeal-based diet as control for 8 weeks. The results indicated that seabass juveniles fed SeE-SP5 and SeE-SP10 diets grew at the same rate as the fish fed a fishmeal-based control diet after 8 weeks of feeding, while SeE-SP20 grew at a significantly lower rate than the control (p < 0.05). Although most of the measured biochemical parameters were not influenced by the Se-SP diets, serum antioxidant-enzyme glutathione peroxidase (GPx) and immunological indices, such as lysozyme activity and immunoglobulin-M, were found significantly higher in the SeE-SP5 and SeE-SP10 diets compared to control. In addition, the fish fed the SeE-SP5 diet showed significantly lower mortalities after the 14-day of bacterial challenge with V. harveyi. These outcomes indicated that up to 10% inclusion of SeE-SP in the diet of juvenile Asian seabass does not compromise growth, while SeE-SP5 enhanced disease resistance in juvenile seabass.
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17
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Bioenergy, Biofuels, Lipids and Pigments—Research Trends in the Use of Microalgae Grown in Photobioreactors. ENERGIES 2022. [DOI: 10.3390/en15155357] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
This scientometric review and bibliometric analysis aimed to characterize trends in scientific research related to algae, photobioreactors and astaxanthin. Scientific articles published between 1995 and 2020 in the Web of Science and Scopus bibliographic databases were analyzed. The article presents the number of scientific articles in particular years and according to the publication type (e.g., articles, reviews and books). The most productive authors were selected in terms of the number of publications, the number of citations, the impact factor, affiliated research units and individual countries. Based on the number of keyword occurrences and a content analysis of 367 publications, seven leading areas of scientific interest (clusters) were identified: (1) techno-economic profitability of biofuels, bioenergy and pigment production in microalgae biorefineries, (2) the impact of the construction of photobioreactors and process parameters on the efficiency of microalgae cultivation, (3) strategies for increasing the amount of obtained lipids and obtaining biodiesel in Chlorella microalgae cultivation, (4) the production of astaxanthin on an industrial scale using Haematococcus microalgae, (5) the productivity of biomass and the use of alternative carbon sources in microalgae culture, (6) the effect of light and carbon dioxide conversion on biomass yield and (7) heterotrophy. Analysis revealed that topics closely related to bioenergy production and biofuels played a dominant role in scientific research. This publication indicates the directions and topics for future scientific research that should be carried out to successfully implement economically viable technology based on microalgae on an industrial scale.
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Wang Q, Li H, Shen Q, Wang J, Chen X, Zhang Z, Lei Z, Yuan T, Shimizu K, Liu Y, Lee DJ. Biogranulation process facilitates cost-efficient resources recovery from microalgae-based wastewater treatment systems and the creation of a circular bioeconomy. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 828:154471. [PMID: 35288130 DOI: 10.1016/j.scitotenv.2022.154471] [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: 12/27/2021] [Revised: 02/18/2022] [Accepted: 03/07/2022] [Indexed: 06/14/2023]
Abstract
Energy self-sufficient wastewater treatment designs can reduce net energy consumption and achieve resources recovery. Microalgae are regarded as a promising candidate for developing a circular bioeconomy in wastewater treatment plants (WWTPs) due to its potential for simultaneous wastewater remediation and high value-added materials production. Much effort has been made to overcome the high production costs for microalgae; however, biomass harvesting still remains as the bottleneck for its large-scale application. In this study, the novel biogranulation system facilitating easier and faster microalgae harvesting was firstly compared with the conventional suspended culture for energy-efficiency and sustainability assessment on microalgae (Ankistrodesmus falcatus var. acicularis) cultivation using the synthetic anaerobic digestion liquor. Results demonstrated that the biogranulation system enhanced volumetric biomass productivity (223.17 ± 11.82 g/m3/day) by about 4.4 times compared to that from the suspended system (41.57 ± 2.08 g/m3/day) under the same environmental conditions. It was noticed that lipids, carbohydrates and proteins were accumulated in microalgae cells along with nutrients remediation, and the microalgae granules with much higher proteins content (313.28 ± 26.67 mg/g-VSS) could be easily harvested through 2 min gravity sedimentation with little impact on the contents of carbohydrates and lipids. In the whole cultivation and harvesting process, the biomass mass-based electricity consumption and footprint demand by the biogranulation system were reduced by 58% and 76%, respectively. Results from this study provide a cost-effective and sustainable approach for microalgae in the treatment of nutrients rich digestion liquor with simultaneous production of valuable biomaterials.
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Affiliation(s)
- Qian Wang
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Hui Li
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Qingyue Shen
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Jixiang Wang
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Xingyu Chen
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Zhenya Zhang
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Zhongfang Lei
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan.
| | - Tian Yuan
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Kazuya Shimizu
- Faculty of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8572, Japan
| | - Yu Liu
- School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Department of Mechanical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong
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Metabolic Engineering Strategies for Improved Lipid Production and Cellular Physiological Responses in Yeast Saccharomyces cerevisiae. J Fungi (Basel) 2022; 8:jof8050427. [PMID: 35628683 PMCID: PMC9144191 DOI: 10.3390/jof8050427] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 04/13/2022] [Accepted: 04/18/2022] [Indexed: 02/01/2023] Open
Abstract
Microbial lipids have been a hot topic in the field of metabolic engineering and synthetic biology due to their increased market and important applications in biofuels, oleochemicals, cosmetics, etc. This review first compares the popular hosts for lipid production and explains the four modules for lipid synthesis in yeast, including the fatty acid biosynthesis module, lipid accumulation module, lipid sequestration module, and fatty acid modification module. This is followed by a summary of metabolic engineering strategies that could be used for enhancing each module for lipid production. In addition, the efforts being invested in improving the production of value-added fatty acids in engineered yeast, such as cyclopropane fatty acid, ricinoleic acid, gamma linoleic acid, EPA, and DHA, are included. A discussion is further made on the potential relationships between lipid pathway engineering and consequential changes in cellular physiological properties, such as cell membrane integrity, intracellular reactive oxygen species level, and mitochondrial membrane potential. Finally, with the rapid development of synthetic biology tools, such as CRISPR genome editing tools and machine learning models, this review proposes some future trends that could be employed to engineer yeast with enhanced intracellular lipid production while not compromising much of its cellular health.
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20
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de Lima NAM, Ecard LG, Rodrigues E, Veiga L, Sampaio Guedes CE, Andrade S, Cunha Lima ST. Use of Microalgae for Biofuel Production in the Northeast Region of Brazil, with Emphasis on Genus Botryococcus: A Review. Ind Biotechnol (New Rochelle N Y) 2022. [DOI: 10.1089/ind.2022.0008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | | | - Edson Rodrigues
- Department of Life Sciences, State University of Bahia, Salvador, Brazil
| | - Luciana Veiga
- Institute of Biology, Federal University of Bahia, Salvador, Brazil
| | | | - Solange Andrade
- Institute of Biology, Federal University of Bahia, Salvador, Brazil
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21
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Yang Y, Zheng M, Qiao S, Zhou J, Bi Z, Quan X. Electro-Fenton improving fouling mitigation and microalgae harvesting performance in a novel membrane photobioreactor. WATER RESEARCH 2022; 210:117955. [PMID: 34953215 DOI: 10.1016/j.watres.2021.117955] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 10/06/2021] [Accepted: 12/06/2021] [Indexed: 06/14/2023]
Abstract
An innovative electro-Fenton enhanced membrane photobioreactor with satisfactory membrane fouling mitigation was constructed for microalgae harvesting. The porous carbon and carbon nanotubes hollow fiber membranes (PC-CHFMs) were used as the separation unit and cathode, simultaneously. H2O2 was generated by cathode reducing O2 in-situ, which would further produce •OH as the main oxidant by coupling H2O2 with Fe2+. The •OH could deeply remove the extracellular organic matter (EOM) deposited on the membrane surface or inside the pores. Experimental results showed that the permeate flux recovery rates of PC-CHFMs by electro-Fenton at the 18th, 29th and 41st day were 100%, 100% and 98.3%, respectively. The corresponding recovery rates by chemical cleaning at the same time were 99.8%, 81.7% and 54.4%. The stable and high permeate flux of PC-CHFMs made a great contribution to the microalgae harvesting efficiency, where the concentration factor could be 4.8 times higher than that of the control group. Filtrating superiority of PC-CHFMs was becoming more prominent with the extension of operating time. In addition, the removal efficiency of NH4+-N and TP in wastewater was approximately 100% at stable culture period.
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Affiliation(s)
- Yue Yang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Mingmei Zheng
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Sen Qiao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China; School of Environment Science and Engineering and National and Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Jiti Zhou
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhen Bi
- School of Environment Science and Engineering and National and Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Xie Quan
- Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education, China), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
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22
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Li P, Wang X, Luo Y, Yuan X. Sustainability evaluation of microalgae biodiesel production process integrated with nutrient close-loop pathway based on emergy analysis method. BIORESOURCE TECHNOLOGY 2022; 346:126611. [PMID: 34954351 DOI: 10.1016/j.biortech.2021.126611] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 06/14/2023]
Abstract
To make comprehensive assessment on sustainability of microalgae biofuel production process integrated with nutrient close-loop pathways, Emergy Analysis methodology was adopted based on case studies: microalgae biodiesel production integrated with Nutrient Recycling Pathway in Case A and microalgae biodiesel production integrated with Protein Production as By-Product Pathway in Case B. Emergy results show that microalgae biodiesel system integrated with Nutrient Recycling Pathway is more sustainable, and factor analysis shows that water source with higher unit emergy value and electricity with lower one are more favorable to improve sustainability performance of the integrated process. Besides, different generations of biofuel are also assessed by Emergy Analysis method, and the third-generation biodiesel shows the most sustainable potentials than the previous.
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Affiliation(s)
- Peiyao Li
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Xue Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
| | - Yiqing Luo
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Chemical Engineering Research Center, Tianjin University, Tianjin 300350, China.
| | - Xigang Yuan
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300350, China; Chemical Engineering Research Center, Tianjin University, Tianjin 300350, China
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23
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Magoni C, Bertacchi S, Giustra CM, Guzzetti L, Cozza R, Ferrari M, Torelli A, Marieschi M, Porro D, Branduardi P, Labra M. Could microalgae be a strategic choice for responding to the demand for omega-3 fatty acids? A European perspective. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.01.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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24
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Zhao Y, Li J, Ma X, Fang X, Zhu B, Pan K. Screening and application of Chlorella strains on biosequestration of the power plant exhaust gas evolutions of biomass growth and accumulation of toxic agents. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:6744-6754. [PMID: 34462853 DOI: 10.1007/s11356-021-15950-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 08/09/2021] [Indexed: 06/13/2023]
Abstract
To use microalgae for the biosequestration of carbon dioxide (CO2) emitted from the coal-fired power plants, the screening of high CO2 tolerant microalgae and their accumulation of toxic agents have attracted significant research attention. This study evaluated 10 Chlorella strains for high CO2 tolerance using combined growth rates and growth periods subjected to logistic parameters. We selected LAMB 31 with high r (0.89 ± 0.10 day-1), high k (6.51 ± 0.19), and medium Tp (5.17 ± 0.15 day) as a candidate for CO2 biosequestration. Correspondingly, six genes involving carbon fixation and metabolism processes were upregulated in LAMB 31 under high CO2 conditions, verifying its high CO2 tolerant ability. LAMB 31 cultures exposed to exhaust gas of power plant under different flow rates grew well, but the high flow rate (0.6 L/h) showed inhibition effects compared with low flow rates (0.2 and 0.3 L/h) at the end of the culturing period. The toxic agents in the exhaust gas including sulfur, arsenic, and mercury accumulated in LAMB 31 biomass but were deemed safe for use in the production of both human food and animal feed based on the National Food Safety Standard in China. This study showed a complete process involving high CO2 tolerant microalgae screening, high CO2 tolerant verification, and in situ application in a power plant. Data results provide valuable information as the basis for future research studies in microalgae application on CO2 mitigation at emission sources.
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Affiliation(s)
- Yan Zhao
- College of Marine Life Sciences, Department of Marine Ecology, Ocean University of China, Qingdao, 266003, China.
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China.
| | - Jun Li
- College of Marine Life Sciences, Department of Marine Ecology, Ocean University of China, Qingdao, 266003, China
| | - Xuebin Ma
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, No. 5 12 Yu Shan Road, Qingdao, 266003, Shandong, People's Republic of China
| | - Xingyu Fang
- Department of Radiology, PLA 305 Hospital, Beijing, 100017, China
| | - Baohua Zhu
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, No. 5 12 Yu Shan Road, Qingdao, 266003, Shandong, People's Republic of China
| | - Kehou Pan
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, No. 5 12 Yu Shan Road, Qingdao, 266003, Shandong, People's Republic of China.
- Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266100, China.
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25
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Zewdie DT, Ali AY. Techno-economic Analysis of Microalgal Biofuel Production Coupled with Sugarcane Processing Factories. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2022. [DOI: 10.1016/j.sajce.2022.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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26
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Biocomposites Using Whole or Valuable Component-Extracted Microalgae Blended with Polymers: A Review. Catalysts 2021. [DOI: 10.3390/catal12010025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Global demand for plastics has increased steadily alongside industrial development. Despite their versatility and convenience, environmental pollution caused by plastics are a major issue. With a reduction in the market size of plastics being seemingly impossible, bioplastics may become key to tackle this issue. Among a wide range of sources of bioplastics, microalgae have come into the limelight. While abundant and valuable components in microalgae have the potential to replace preexisting plastics, complex processes and low cost performances have prevented them from entering the market. In this study, we examined techniques for biocomposites in which polymers are blended with microalgae. We focused on microalgae-based biocomposite blending processed from the perspective of functionality and cost performance.
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27
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Wang C, Qi M, Guo J, Zhou C, Yan X, Ruan R, Cheng P. The Active Phytohormone in Microalgae: The Characteristics, Efficient Detection, and Their Adversity Resistance Applications. Molecules 2021; 27:46. [PMID: 35011277 PMCID: PMC8746318 DOI: 10.3390/molecules27010046] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/16/2021] [Accepted: 12/20/2021] [Indexed: 01/12/2023] Open
Abstract
Phytohormones are a class of small organic molecules that are widely used in higher plants and microalgae as chemical messengers. Phytohormones play a regulatory role in the physiological metabolism of cells, including promoting cell division, increasing stress tolerance, and improving photosynthetic efficiency, and thereby increasing biomass, oil, chlorophyll, and protein content. However, traditional abiotic stress methods for inducing the accumulation of energy storage substances in microalgae, such as high light intensity, high salinity, and heavy metals, will affect the growth of microalgae and will ultimately limit the efficient accumulation of energy storage substances. Therefore, the addition of phytohormones not only helps to reduce production costs but also improves the efficiency of biofuel utilization. However, accurate and sensitive phytohormones determination and analytical methods are the basis for plant hormone research. In this study, the characteristics of phytohormones in microalgae and research progress for regulating the accumulation of energy storage substances in microalgae by exogenous phytohormones, combined with abiotic stress conditions at home and abroad, are summarized. The possible metabolic mechanism of phytohormones in microalgae is discussed, and possible future research directions are put forward, which provide a theoretical basis for the application of phytohormones in microalgae.
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Affiliation(s)
- Chun Wang
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China; (C.W.); (M.Q.); (J.G.); (C.Z.)
| | - Mei Qi
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China; (C.W.); (M.Q.); (J.G.); (C.Z.)
| | - Jiameng Guo
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China; (C.W.); (M.Q.); (J.G.); (C.Z.)
| | - Chengxu Zhou
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China; (C.W.); (M.Q.); (J.G.); (C.Z.)
| | - Xiaojun Yan
- Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo 315211, China
| | - Roger Ruan
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota-Twin Cities, Saint Paul, MN 55108, USA;
| | - Pengfei Cheng
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China; (C.W.); (M.Q.); (J.G.); (C.Z.)
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota-Twin Cities, Saint Paul, MN 55108, USA;
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Xia D, Qiu W, Wang X, Liu J. Recent Advancements and Future Perspectives of Microalgae-Derived Pharmaceuticals. Mar Drugs 2021; 19:703. [PMID: 34940702 PMCID: PMC8703604 DOI: 10.3390/md19120703] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/25/2021] [Accepted: 12/07/2021] [Indexed: 12/19/2022] Open
Abstract
Microalgal cells serve as solar-powered factories that produce pharmaceuticals, recombinant proteins (vaccines and drugs), and valuable natural byproducts that possess medicinal properties. The main advantages of microalgae as cell factories can be summarized as follows: they are fueled by photosynthesis, are carbon dioxide-neutral, have rapid growth rates, are robust, have low-cost cultivation, are easily scalable, pose no risk of human pathogenic contamination, and their valuable natural byproducts can be further processed. Despite their potential, there are many technical hurdles that need to be overcome before the commercial production of microalgal pharmaceuticals, and extensive studies regarding their impact on human health must still be conducted and the results evaluated. Clearly, much work remains to be done before microalgae can be used in the large-scale commercial production of pharmaceuticals. This review focuses on recent advancements in microalgal biotechnology and its future perspectives.
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Affiliation(s)
- Donghua Xia
- State Key Laboratory of Food Science and Technology, The Engineering Research Center for Biomass Conversion, Nanchang University, Nanchang 330047, China;
| | - Wen Qiu
- Eco-Environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China;
| | - Xianxian Wang
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany;
| | - Junying Liu
- State Key Laboratory of Food Science and Technology, The Engineering Research Center for Biomass Conversion, Nanchang University, Nanchang 330047, China;
- Pharmaceutical Manufacturing Technology Centre (PMTC), Bernal Institute, University of Limerick, V94T9PX Limerick, Ireland
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Radziff SBM, Ahmad SA, Shaharuddin NA, Merican F, Kok YY, Zulkharnain A, Gomez-Fuentes C, Wong CY. Potential Application of Algae in Biodegradation of Phenol: A Review and Bibliometric Study. PLANTS (BASEL, SWITZERLAND) 2021; 10:2677. [PMID: 34961148 PMCID: PMC8709323 DOI: 10.3390/plants10122677] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/29/2021] [Accepted: 11/02/2021] [Indexed: 06/14/2023]
Abstract
One of the most severe environmental issues affecting the sustainable growth of human society is water pollution. Phenolic compounds are toxic, hazardous and carcinogenic to humans and animals even at low concentrations. Thus, it is compulsory to remove the compounds from polluted wastewater before being discharged into the ecosystem. Biotechnology has been coping with environmental problems using a broad spectrum of microorganisms and biocatalysts to establish innovative techniques for biodegradation. Biological treatment is preferable as it is cost-effective in removing organic pollutants, including phenol. The advantages and the enzymes involved in the metabolic degradation of phenol render the efficiency of microalgae in the degradation process. The focus of this review is to explore the trends in publication (within the year of 2000-2020) through bibliometric analysis and the mechanisms involved in algae phenol degradation. Current studies and publications on the use of algae in bioremediation have been observed to expand due to environmental problems and the versatility of microalgae. VOSviewer and SciMAT software were used in this review to further analyse the links and interaction of the selected keywords. It was noted that publication is advancing, with China, Spain and the United States dominating the studies with total publications of 36, 28 and 22, respectively. Hence, this review will provide an insight into the trends and potential use of algae in degradation.
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Affiliation(s)
- Syahirah Batrisyia Mohamed Radziff
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (S.B.M.R.); (S.A.A.); (N.A.S.)
| | - Siti Aqlima Ahmad
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (S.B.M.R.); (S.A.A.); (N.A.S.)
- Center for Research and Antarctic Environmental Monitoring (CIMAA), Universidad de Magallanes, Avda. Bulnes, Punta Arenas 01855, Chile;
| | - Noor Azmi Shaharuddin
- Department of Biochemistry, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, Serdang 43400, Selangor, Malaysia; (S.B.M.R.); (S.A.A.); (N.A.S.)
| | - Faradina Merican
- School of Biological Sciences, Universiti Sains Malaysia, Minden, Gelugor 11800, Penang, Malaysia;
| | - Yih-Yih Kok
- Division of Applied Biomedical Sciences and Biotechnology, School of Health Sciences, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Selangor, Malaysia;
| | - Azham Zulkharnain
- Department of Bioscience and Engineering, College of Systems Engineering and Science, Shibaura Institute of Technology, Saitama-shi 337-8570, Saitama, Japan;
| | - Claudio Gomez-Fuentes
- Center for Research and Antarctic Environmental Monitoring (CIMAA), Universidad de Magallanes, Avda. Bulnes, Punta Arenas 01855, Chile;
- Department of Chemical Engineering, Universidad de Magallanes, Avda. Bulnes, Punta Arenas 01855, Chile
| | - Chiew-Yen Wong
- Division of Applied Biomedical Sciences and Biotechnology, School of Health Sciences, International Medical University, Bukit Jalil, Kuala Lumpur 57000, Selangor, Malaysia;
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Shaikh SM, Hassan MK, Nasser M, Sayadi S, Ayesh AI, Vasagar V. A comprehensive review on harvesting of microalgae using Polyacrylamide-Based Flocculants: Potentials and challenges. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119508] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Potential for Biomass Production and Remediation by Cultivation of the Marine Model Diatom Phaeodactylum tricornutum in Oil Field Produced Wastewater Media. WATER 2021. [DOI: 10.3390/w13192700] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
While oilfield produced water (PW) is one of the largest, unclaimed wastewater streams of the oil industry, it could potentially be used as a cultivation medium for microalgae. Microalgae could help with the remediation of this water while also delivering biomass that can be transformed into valuable byproducts such as biofuels. The coupling of these two purposes is expected to cut production costs of biofuels while aiding environmental protection. In this study, we compared the cultivation capacity of the marine model diatom Phaeodactylum tricornutum in media at varying salinities and in media composed of PW from two oilfields in the Central Valley of California that differed drastically in the concentration of inorganic and organic constituents. Specifically, we measured the carrying capacity of these media, the maximum growth rates of P. tricornutum, its cellular lipid accumulation capacity, and its capacity to remediate the most polluted PW source. Our study shows that P. tricornutum can successfully adjust to the tested cultivation media through processes of short-term acclimation and long-term adaptation. Furthermore, the cultivation of P. tricornutum in the most heavily polluted PW source led to significant increases in cell yield and improved photosynthetic capacity during the stationary phase, which could be attributed chiefly to the higher levels of nitrate present in this PW source. Chemical water analyses also demonstrated the capability of P. tricornutum to remediate major nutrient content and potentially harmful elements like fluorine and copper. Because P. tricornutum is amenable to advanced genetic engineering, which could be taken advantage of to improve its cultivation resilience and productivity in an economic setting, we propose this study as a step towards essential follow-up studies that will identify the genetic regulation behind its growth in oilfield PW media and its remediation of the PW constituents.
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Kashyap M, Kiran B. Milking microalgae in conjugation with nano-biorefinery approach utilizing wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2021; 293:112864. [PMID: 34049157 DOI: 10.1016/j.jenvman.2021.112864] [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: 02/18/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 06/12/2023]
Abstract
In today's era, we need to replace chemical or physical processes of nanoparticle synthesis with biosynthesis processes to avoid environmental damage. These bioderived nanoparticles can help in addressing the problems of wastewater treatment and biofuels production. This review gives an insight into solving multiple problems using a nano-biorefinery approach in conjugation with wastewater treatment. The major advantage of using a bio-derivative method in nanoparticle synthesis is its low toxicity towards the environment. The current review discusses the development of nanoscience and its biogenic importance. It covers the usage of microalgae for (A) Nanoparticle's biosynthesis (B) Mechanism of nanoparticle biosynthesis (C) Nanoparticles in bio-refinery processes (D) Wastewater treatment with microalgae and bio-derived nanoparticles (E) A hypothetical mechanistic approach, which utilizes the photothermal effect of metallic nanoparticles to extract lipids from the cells without cell damage. The term "cell milking" has been around for quite some time, and the hypothesis discussed in the present study can help in this context. The current hypothesized process can pave ways for futuristic endeavors to conjugate nanoparticles and microalgae for viable and commercial production of biofuel, nanoparticles, and many other molecules.
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Affiliation(s)
- Mrinal Kashyap
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, 453552, India
| | - Bala Kiran
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, 453552, India.
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Unay E, Ozkaya B, Yoruklu HC. A multicriteria decision analysis for the evaluation of microalgal growth and harvesting. CHEMOSPHERE 2021; 279:130561. [PMID: 33892454 DOI: 10.1016/j.chemosphere.2021.130561] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 03/22/2021] [Accepted: 04/07/2021] [Indexed: 06/12/2023]
Abstract
Biomass obtained from microalgae research studies gained momentum in recent years because of their extensive application potential in multiple industries such as high-value nutraceuticals, bioproducts, cosmetics, animal feed industries, and biofuels while being a sustainable and environmentally friendly option. Although they have high biomass yields and rapid growth rates there are some limitations and challenges that remain for large-scale commercialized cultivation and harvesting methods of microalgae. Since there are multiple pathways related to efficient cultivation and harvesting methods to be viable, this study adopted, TOPSIS (Technique for Order Preference by Similarity to Ideal Solution), a multicriteria decision-making tool, to find the most acceptable alternative by using excel spreadsheets to evaluate the information that is derived from literature and pilot-scale studies. As a result, tubular (helical) and plate (flat panel) photobioreactors (PBRs) for cultivation and chemical harvesting (with chitosan) and bio-flocculation for harvesting were deemed suitable, while plastic bag PBR and suspended air flotation were deemed unsuitable.
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Affiliation(s)
- Elifnaz Unay
- Yildiz Technical University, Faculty of Civil Engineering, Environmental Engineering Department, 34220, Esenler Istanbul, Turkey.
| | - Bestami Ozkaya
- Yildiz Technical University, Faculty of Civil Engineering, Environmental Engineering Department, 34220, Esenler Istanbul, Turkey.
| | - Hulya Civelek Yoruklu
- Yildiz Technical University, Faculty of Civil Engineering, Environmental Engineering Department, 34220, Esenler Istanbul, Turkey.
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Ananthi V, Balaji P, Sindhu R, Kim SH, Pugazhendhi A, Arun A. A critical review on different harvesting techniques for algal based biodiesel production. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 780:146467. [PMID: 33774295 DOI: 10.1016/j.scitotenv.2021.146467] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 02/19/2021] [Accepted: 03/10/2021] [Indexed: 06/12/2023]
Abstract
The fuels retrieved from renewable sources which are usually employed as both carbon and energy sources are termed as neutral based biofuels. The most promising feedstock from renewable sources with great potentiality in contributing to the inclining energy demand is microalgae. These microalgae can be harnessed readily in terms of obtaining qualitative biodiesel with greater energy consumption under limited operational cost. The process of harvesting or dewatering microalgae could be carried under single or sequential combinations of operations. The major drawback of harvesting such as huge operational cost could be lowered by increasing the level of automation than cost of investments. The present review concentrates and explores on the techno-economic analysis of the microalgal harvesting and dewatering processes on a large scale. Along with these advanced techniques enclosing the utilization of nanoparticles for harvesting has also been explored. And it also adds with the impacts of concerning facts on energy consumption, processing cost and recovery of resources during harvesting.
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Affiliation(s)
- V Ananthi
- Department of Microbiology, PRIST University, Madurai Campus, Tamil Nadu, India; Department of Microbiology, Alagappa University, Karaikudi, Tamil Nadu, India
| | - P Balaji
- PG and Research Centre in Biotechnology, MGR College, Hosur, Tamil Nadu, India
| | - Raveendran Sindhu
- Microbial Processes and Technology Division, CSIR- National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum, Kerala, India
| | - Sang-Hyoun Kim
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Arivalagan Pugazhendhi
- School of Renewable Energy, Maejo University, Chiang Mai 50290, Thailand; College of Medical and Health Science, Asia University, Taichung, Taiwan.
| | - A Arun
- Department of Microbiology, Alagappa University, Karaikudi, Tamil Nadu, India.
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Slocombe SP, Huete-Ortega M, Kapoore RV, Okurowska K, Mair A, Day JG, Stanley MS, Vaidyanathan S. Enabling large-scale production of algal oil in continuous output mode. iScience 2021; 24:102743. [PMID: 34278255 PMCID: PMC8264157 DOI: 10.1016/j.isci.2021.102743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 05/07/2021] [Accepted: 06/14/2021] [Indexed: 11/08/2022] Open
Abstract
Large-scale algal oil production requires continuous outputs and a trade-off between growth and oil content. Two unrelated marine algae (Nannochloropsis oceanica [CCAP 849/10] and Chlorella vulgaris [CCAP 211/21A]) that showed high oil production under batch culture were studied under controlled semicontinuous cultivation conditions. Three essential attributes maximized oil productivity: (i) downregulation of cell size to maximize light absorption under N limitation; (ii) low nutrient-depletion thresholds to trigger oil induction; (iii) a means of carbohydrate suppression in favor of oil. N. oceanica responded better to input N/P variations and is more suited to continuous oil production. A low N/P ratio was effective in both suppressing carbohydrate and reducing cell size concomitant with oil production. In C. vulgaris, nutrient starvation thresholds for oil were higher and carbohydrate was preferentially induced, which impeded stress-level optimization for oil. These differences, which impact continuous oil production at scale, are driven by species adaptation to specific marine habitats. VIDEO ABSTRACT VIDEO ABSTRACT
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Affiliation(s)
- Stephen P. Slocombe
- The Scottish Association for Marine Science (SAMS), Scottish Marine Institute, Oban, Argyll PA37 1QA, UK
| | - Maria Huete-Ortega
- Advanced Biomanufacturing Centre, Department of Chemical and Biological Engineering, ChELSI Institute, The University of Sheffield, Sheffield S1 3JD, UK
| | - Rahul Vijay Kapoore
- Advanced Biomanufacturing Centre, Department of Chemical and Biological Engineering, ChELSI Institute, The University of Sheffield, Sheffield S1 3JD, UK
| | - Katarzyna Okurowska
- Advanced Biomanufacturing Centre, Department of Chemical and Biological Engineering, ChELSI Institute, The University of Sheffield, Sheffield S1 3JD, UK
| | - Alison Mair
- The Scottish Association for Marine Science (SAMS), Scottish Marine Institute, Oban, Argyll PA37 1QA, UK
| | - John G. Day
- The Scottish Association for Marine Science (SAMS), Scottish Marine Institute, Oban, Argyll PA37 1QA, UK
| | - Michele S. Stanley
- The Scottish Association for Marine Science (SAMS), Scottish Marine Institute, Oban, Argyll PA37 1QA, UK
| | - Seetharaman Vaidyanathan
- Advanced Biomanufacturing Centre, Department of Chemical and Biological Engineering, ChELSI Institute, The University of Sheffield, Sheffield S1 3JD, UK
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Zavafer A, Bates H, Labeeuw L, Kofler JR, Ralph PJ. Normalized chlorophyll fluorescence imaging: A method to determine irradiance and photosynthetically active radiation in phytoplankton cultures. ALGAL RES 2021. [DOI: 10.1016/j.algal.2021.102309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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37
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Álvarez X, Jiménez A, Cancela Á, Valero E, Sánchez Á. Harvesting freshwater algae with tannins from the bark of forest species: Comparison of methods and pelletization of the biomass obtained. CHEMOSPHERE 2021; 268:129313. [PMID: 33359839 DOI: 10.1016/j.chemosphere.2020.129313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/04/2020] [Accepted: 12/12/2020] [Indexed: 06/12/2023]
Abstract
Toxic cyanobacteria growth rates have increased in recent decades due to climate change and human activities. Microalgae, with their ability to produce a large amount of biomass, are considered as a source of energy that can be used to produce biofuels. The aim of this study is to test four different microalgae harvesting methods (sedimentation, coagulation-flocculation, pH variation, and centrifugation) in order to find which is best suited to the A Baxe reservoir, which has been suffering from cyanobacterial blooms in recent years. Centrifugation proved the most efficient method (85.74%-1790 RCF), but it can induce cell rupture. Natural sedimentation and pH variation obtained similar results at 49.36% and 49.02% respectively. Although all four methods have advantages, our results reveal that coagulation-flocculation, using 10 mg/L of Pinus pinaster, results in a removal efficiency of 68.10%, making it the most suitable method, though with 20 mg/L the performance was lower (66.03%). To minimise environmental waste, the microalgae removed were then transformed into pellets to be used as biofuel, with a higher heating value (HHV) of 21,196.96 ± 1602.33 kJ/kg. The pellets obtained from the microalgae residue did not meet all the requirements for use as biofuels, but microalgae biomass could be mixed with other sources and therefore looks like a promising option for the future.
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Affiliation(s)
- Xana Álvarez
- Natural Resources and Environment Engineering Department, School of Forestry Engineering, University of Vigo, Campus A Xunqueira S/n., 36005 Pontevedra, Spain.
| | - Alejandro Jiménez
- School of Forestry Engineering, University of Vigo, Campus A Xunqueira S/n., 36005, Pontevedra, Spain.
| | - Ángeles Cancela
- Chemical Engineering Department, School of Forestry Engineering, University of Vigo, Campus A Xunqueira S/n., 36005, Pontevedra, Spain.
| | - Enrique Valero
- Natural Resources and Environment Engineering Department, School of Forestry Engineering, University of Vigo, Campus A Xunqueira S/n., 36005 Pontevedra, Spain.
| | - Ángel Sánchez
- Chemical Engineering Department, School of Industrial Engineering, University of Vigo, Campus Lagoas-Marcosende S/n, 36310, Vigo-Pontevedra, Spain.
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Douchi D, Mosey M, Astling DP, Knoshaug EP, Nag A, McGowen J, Laurens LM. Nuclear and chloroplast genome engineering of a productive non-model alga Desmodesmus armatus: Insights into unusual and selective acquisition mechanisms for foreign DNA. ALGAL RES 2021. [DOI: 10.1016/j.algal.2020.102152] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Li X, Slavens S, Crunkleton DW, Johannes TW. Interactive effect of light quality and temperature on Chlamydomonas reinhardtii growth kinetics and lipid synthesis. ALGAL RES 2021. [DOI: 10.1016/j.algal.2020.102127] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Novel Insights into the Biotechnological Production of Haematococcus pluvialis-Derived Astaxanthin: Advances and Key Challenges to Allow Its Industrial Use as Novel Food Ingredient. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2020. [DOI: 10.3390/jmse8100789] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Astaxanthin shows many biological activities. It has acquired a high economic potential and its current market is dominated by its synthetic form. However, due to the increase of the health and environmental concerns from consumers, natural forms are now preferred for human consumption. Haematococcus pluvialis is artificially cultured at an industrial scale to produce astaxanthin used as a dietary supplement. However, due to the high cost of its cultivation and its relatively low biomass and pigment productivities, the astaxanthin extracted from this microalga remains expensive and this has probably the consequence of slowing down its economic development in the lower added-value market such as food ingredient. In this review, we first aim to provide an overview of the chemical and biochemical properties of astaxanthin, as well as of its natural sources. We discuss its bioavailability, metabolism, and biological activities. We present a state-of-the-art of the biology and physiology of H. pluvialis, and highlight novel insights into the biotechnological processes which allow optimizing the biomass and astaxanthin productivities. We are trying to identify some lines of research that would improve the industrial sustainability and economic viability of this bio-production and to broaden the commercial potential of astaxanthin produced from H. pluvialis.
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Najjar YS, Abu-Shamleh A. Harvesting of microalgae by centrifugation for biodiesel production: A review. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.102046] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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42
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Deka D, Marwein R, Chikkaputtaiah C, Kaki SS, Azmeera T, Boruah HPD, Velmurugan N. Strain improvement of long-chain fatty acids producing Micractinium sp. by flow cytometry. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.06.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Ghani N, Shahzadi N, Sadaf S, Ullah I, Ali E, Iqbal J, Rafique T, Maqbool M. Isolation of Several Indigenous Microalgae from Kallar Kahar Lake, Chakwal Pakistan. IRANIAN JOURNAL OF BIOTECHNOLOGY 2020; 18:e2214. [PMID: 33850937 PMCID: PMC8035414 DOI: 10.30498/ijb.2020.122025.2214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Kallar Kahar lake, Punjab, Pakistan is a rich source of phytoplankton which can be used for biofuel production. OBJECTIVE This study was conducted to investigate the presence of different microalgae species present in this lake and their possible utilization for bioenergy production. MATERIALS AND METHODS The crude culture was examined under microscope. Isolation of the identified species was carried out by using serial dilution and colony picking methods. Isolated strains were evaluated by investigating their biomass productivity, salinity resistance and auto-flocculation ability. RESULTS Four different microalgae species (Chlorella, Scenedesmus, Oscillatoria and Spirulina) were identified in the crude sample. The experimental results indicated that, among the four isolated strains, the Oscillatoria species showed highest biomass productivity (4.2 gL-1) and Scenedesmus showed comparatively higher salt resistance. Scenedesmus also showed great potential of auto-flocculation as around 70 % of its cells sediment within 5 h without addition of any external flocculating agent. The lipid content in the isolated strains has also been carried out using Soxhlet extraction. CONCLUSION Four different microalgae strains have been found in Kallar Kahar lake that reflected good biomass productivity and are capable of auto-flocculation.
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Affiliation(s)
- Naila Ghani
- Department of Chemistry, University of Agriculture Faisalabad, Pakistan
| | - Nargis Shahzadi
- Department of Chemistry, University of Agriculture Faisalabad, Pakistan
| | - Sana Sadaf
- Punjab Bio-Energy Institute, University of Agriculture, Faisalabad, Pakistan
| | - Inam Ullah
- Department of Chemistry, University of Okara, Okara, Pakistan
| | - Ehsan Ali
- Punjab Bio-Energy Institute, University of Agriculture, Faisalabad, Pakistan
| | - Javed Iqbal
- Department of Chemistry, University of Agriculture Faisalabad, Pakistan
- Punjab Bio-Energy Institute, University of Agriculture, Faisalabad, Pakistan
| | - Tanzila Rafique
- Department of Botany, Government College Women University, Faisalabad, Pakistan
| | - Munazza Maqbool
- Department of Chemistry, University of Agriculture Faisalabad, Pakistan
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Slocombe SP, Zúñiga-Burgos T, Chu L, Wood NJ, Camargo-Valero MA, Baker A. Fixing the Broken Phosphorus Cycle: Wastewater Remediation by Microalgal Polyphosphates. FRONTIERS IN PLANT SCIENCE 2020; 11:982. [PMID: 32695134 PMCID: PMC7339613 DOI: 10.3389/fpls.2020.00982] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/16/2020] [Indexed: 05/06/2023]
Abstract
Phosphorus (P), in the form of phosphate derived from either inorganic (Pi) or organic (Po) forms is an essential macronutrient for all life. P undergoes a biogeochemical cycle within the environment, but anthropogenic redistribution through inefficient agricultural practice and inadequate nutrient recovery at wastewater treatment works have resulted in a sustained transfer of P from rock deposits to land and aquatic environments. Our present and near future supply of P is primarily mined from rock P reserves in a limited number of geographical regions. To help ensure that this resource is adequate for humanity's food security, an energy-efficient means of recovering P from waste and recycling it for agriculture is required. This will also help to address excess discharge to water bodies and the resulting eutrophication. Microalgae possess the advantage of polymeric inorganic polyphosphate (PolyP) storage which can potentially operate simultaneously with remediation of waste nitrogen and phosphorus streams and flue gases (CO2, SOx, and NOx). Having high productivity in photoautotrophic, mixotrophic or heterotrophic growth modes, they can be harnessed in wastewater remediation strategies for biofuel production either directly (biodiesel) or in conjunction with anaerobic digestion (biogas) or dark fermentation (biohydrogen). Regulation of algal P uptake, storage, and mobilization is intertwined with the cellular status of other macronutrients (e.g., nitrogen and sulphur) in addition to the manufacture of other storage products (e.g., carbohydrate and lipids) or macromolecules (e.g., cell wall). A greater understanding of controlling factors in this complex interaction is required to facilitate and improve P control, recovery, and reuse from waste streams. The best understood algal genetic model is Chlamydomonas reinhardtii in terms of utility and shared resources. It also displays mixotrophic growth and advantageously, species of this genus are often found growing in wastewater treatment plants. In this review, we focus primarily on the molecular and genetic aspects of PolyP production or turnover and place this knowledge in the context of wastewater remediation and highlight developments and challenges in this field.
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Affiliation(s)
- Stephen P. Slocombe
- Centre for Plant Sciences and Astbury Centre for Structural Molecular Biology, Faculty of Biological Sciences, School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Tatiana Zúñiga-Burgos
- Centre for Plant Sciences and Astbury Centre for Structural Molecular Biology, Faculty of Biological Sciences, School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
- BioResource Systems Research Group, School of Civil Engineering, University of Leeds, Leeds, United Kingdom
| | - Lili Chu
- Centre for Plant Sciences and Astbury Centre for Structural Molecular Biology, Faculty of Biological Sciences, School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
| | - Nicola J. Wood
- Centre for Plant Sciences and Astbury Centre for Structural Molecular Biology, Faculty of Biological Sciences, School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
- Centre for Doctoral Training in Bioenergy, School of Chemical and Process Engineering, University of Leeds, Leeds, United Kingdom
| | - Miller Alonso Camargo-Valero
- BioResource Systems Research Group, School of Civil Engineering, University of Leeds, Leeds, United Kingdom
- Departamento de Ingeniería Química, Universidad Nacional de Colombia, Manizales, Colombia
| | - Alison Baker
- Centre for Plant Sciences and Astbury Centre for Structural Molecular Biology, Faculty of Biological Sciences, School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
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45
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Sandani WP, Nishshanka GKSH, Premaratne RGMM, Nanayakkara Wijayasekera SC, Ariyadasa TU, Premachandra JK. Comparative assessment of pretreatment strategies for production of microalgae-based biodiesel from locally isolated Chlorella homosphaera. J Biosci Bioeng 2020; 130:295-305. [PMID: 32507481 DOI: 10.1016/j.jbiosc.2020.03.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 02/03/2020] [Accepted: 03/07/2020] [Indexed: 01/08/2023]
Abstract
The yield and quality of lipids extracted from microalgal biomass are critical factors in the production of microalgae-based biodiesel. The green microalga Chlorella homosphaera, isolated from Beira Lake, Colombo, Sri Lanka was employed in the present study to identify the effect of chlorophyll removal and cell disruption methods on lipid extraction yield, fatty acid methyl ester (FAME) profile and quality parameters of biodiesel; including cetane number (CN), iodine value (IV), degree of unsaturation (DU) and high heating value (HHV). In the first section of this study, chlorophyll was removed from dry microalgae biomass prior to lipid extraction. Through the analysis of FAME profiles, it was observed that chlorophyll removal yielded biodiesel of enhanced quality, albeit with a lipid loss of 44.2% relative to the control. In the second section of the study, mechanical cell disruption strategies including grinding, autoclaving, water bath heating and microwaving were employed to identify the most effective method to improve lipid recovery from chlorophyll-removed microalgae biomass. Autoclaving (121 °C, 20 min sterilization time, total time 2 h) was the most effective cell disruption technique of the methods tested, in terms of lipid extraction yield (39.80%) and also biodiesel quality. Moreover, it was observed that employing cell disruption subsequent to chlorophyll removal has a significant impact on the FAME profile of microalgae-based biodiesel, and consequently served to increase HHV and CN although IV and DU did not vary significantly.
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Affiliation(s)
| | | | | | | | - Thilini Udayangani Ariyadasa
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka.
| | - Jagath Kumara Premachandra
- Department of Chemical and Process Engineering, Faculty of Engineering, University of Moratuwa, Moratuwa 10400, Sri Lanka
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46
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Investigation of Growth, Lipid Productivity, and Fatty Acid Profiles in Marine Bloom-Forming Dinoflagellates as Potential Feedstock for Biodiesel. JOURNAL OF MARINE SCIENCE AND ENGINEERING 2020. [DOI: 10.3390/jmse8060381] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Microalgae-based biodiesel is increasingly recognized as an alternative to crop-based biodiesel. In this study, 10 local strains of dinoflagellates collected from Hong Kong waters, including a monoculture and field sample of Scrippsiella sp. isolated from an algal bloom, were evaluated against the performance of green alga Tetraselmis suecica. The specific growth rate, biomass production, lipid productivity, and fatty acid profile were investigated. The total lipid content of isolated strains ranged from 16.2% to 32.2% of the total dry biomass, whereas palmitic acid (C16:0) and docosahexaenoic acid (DHA, C22:6n3) were dominant in the fatty acid profile. Scrippsiella sp. has a high lipid productivity (47.3 mg/L/day) and fatty acid methyl esters (FAME) content (55.2–73 mg/g dry weight (dw)), which were comparable to that in green alga T. suecica. Further, monoculture and field sampled blooming Scrippsiella sp. showed no significant difference in most parameters, suggesting the possibility of harvesting a natural algal bloom population as a mitigation strategy to harmful algal bloom and to use as biodiesel feedstock. Overall, dinoflagellate species showed a slower growth rate (0.04–0.57 day−1) than most compared species (0.07–1.34 day−1), likely due to a large genome size and low chlorophyll to carbon ratio. Notably, most investigated dinoflagellates were not ideal for mass biodiesel production due to the low growth rate and lipid productivity. However, a high level of polyunsaturated fatty acids (PUFA) in dinoflagellates are prospective for further studies in other biotechnological applications. Though effectively harvesting algal blooming biomass can be complex, it can be further explored as a strategy for algal bloom mitigation and potentially creating values at the advantage of natural bloom when applying harvested biomass for biodiesel and bioactive compounds extraction.
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47
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Wahlen BD, Wendt LM, Murphy A, Thompson VS, Hartley DS, Dempster T, Gerken H. Preservation of Microalgae, Lignocellulosic Biomass Blends by Ensiling to Enable Consistent Year-Round Feedstock Supply for Thermochemical Conversion to Biofuels. Front Bioeng Biotechnol 2020; 8:316. [PMID: 32351950 PMCID: PMC7174550 DOI: 10.3389/fbioe.2020.00316] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 03/23/2020] [Indexed: 11/19/2022] Open
Abstract
Seasonal variation in microalgae productivity is a significant barrier to economical production of algae biofuels and chemicals. Summer production can be 3–5 times higher than in the winter resulting in uneven feedstock supplies at algae biorefineries. A portion of the summer production must be preserved for conversion in the winter in order to maintain a biorefinery running at capacity. Ensiling, a preservation process that utilizes lactic acid fermentation to limit microbial degradation, has been demonstrated to successfully stabilize algae biomass (20% solids) and algae-lignocellulosic blends (40% algae-60% lignocellulosic biomass, dry basis) for over 6 months, resulting in fuel production cost savings with fewer emissions. Preservation of algae as blends could be beneficial to biorefineries that utilize thermochemical approaches to fuel production as co-processing of algae and lignocellulosic biomass has been observed to enhance biocrude yield and improve oil quality. This study conducts a resource assessment of biomass residues in the southern United States to identify materials available during peak algae productivity and in sufficient quantity to meet the algae storage needs of an algae biofuel industry. Eight feedstocks met the quantity threshold but only three, distillers grains, haylage, and yard waste, were also available in season. Storage experiments utilizing both freshwater and marine strains of microalgae – Scenedesmus acutus, Chlorella vulgaris, Chlorella zofingiensis, Nannochloropsis gaditana, and Porphyridium purpureum – and yard waste were conducted for 30 days. Storage losses were less than 10% in all but one case, and the pH of all but one blend was reduced to less than 4.7, indicating that yard waste is a suitable feedstock for blending with algae prior to storage. To better understand whether the benefits to conversion realized by processing blends might be affected by storage, elemental analysis and bomb calorimetry of pre- and post-storage algae-yard waste blends were conducted to characterize changes occurring during storage. Storing algae biomass as blends with lignocellulosic biomass could be an effective method of mitigating seasonal variability in algae biomass production while retaining the synergistic effect of co-processing algae blends in thermochemical conversion.
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Affiliation(s)
- Bradley D Wahlen
- Biological Processing, Idaho National Laboratory, Idaho Falls, ID, United States
| | - Lynn M Wendt
- Biological Processing, Idaho National Laboratory, Idaho Falls, ID, United States
| | - Austin Murphy
- Biological Processing, Idaho National Laboratory, Idaho Falls, ID, United States
| | - Vicki S Thompson
- Biological Processing, Idaho National Laboratory, Idaho Falls, ID, United States
| | - Damon S Hartley
- Biological Processing, Idaho National Laboratory, Idaho Falls, ID, United States
| | - Thomas Dempster
- Biofuels Center of Excellence, Santa Fe Community College, Santa Fe, NM, United States
| | - Henri Gerken
- Arizona Center for Algae Technology and Innovation, Arizona State University, Tempe, AZ, United States
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48
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Kumbhar AN, He M, Rajper AR, Memon KA, Rizwan M, Nagi M, Woldemicael AG, Li D, Wang C, Wang C. The Use of Urea and Kelp Waste Extract is A Promising Strategy for Maximizing the Biomass Productivity and Lipid Content in Chlorella sorokiniana. PLANTS (BASEL, SWITZERLAND) 2020; 9:E463. [PMID: 32272580 PMCID: PMC7238413 DOI: 10.3390/plants9040463] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/24/2020] [Accepted: 03/25/2020] [Indexed: 11/16/2022]
Abstract
The decline in fossil fuel reserves has forced researchers to seek out alternatives to fossil fuels. Microalgae are considered to be a promising feedstock for sustainable biofuel production. Previous studies have shown that urea is an important nitrogen source for cell growth and the lipid production of microalgae. The present study investigated the effect of different concentrations of urea combined with kelp waste extract on the biomass and lipid content of Chlorella sorokiniana. The results revealed that the highest cell density, 20.36 × 107 cells-1, and maximal dry biomass, 1.70 g/L, were achieved in the presence of 0.5 g/L of urea combined with 8% kelp waste extract. Similarly, the maximum chlorophyll a, b and beta carotenoid were 10.36 mg/L, 7.05, and 3.01 mg/L, respectively. The highest quantity of carbohydrate content, 290.51 µg/mL, was achieved in the presence of 0.2 g/L of urea and 8% kelp waste extract. The highest fluorescence intensity, 40.05 × 107 cells-1, and maximum total lipid content (30%) were achieved in the presence of 0.1 g/L of urea and 8% kelp waste extract. The current study suggests that the combination of urea and kelp waste extract is the best strategy to enhance the biomass and lipid content in Chlorella sorokiniana.
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Affiliation(s)
- Ali Nawaz Kumbhar
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (A.N.K.); (M.H.); (A.R.R.); (K.A.M.); (M.N.); (A.G.W.); (D.L.); (C.W.)
| | - Meilin He
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (A.N.K.); (M.H.); (A.R.R.); (K.A.M.); (M.N.); (A.G.W.); (D.L.); (C.W.)
| | - Abdul Razzaque Rajper
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (A.N.K.); (M.H.); (A.R.R.); (K.A.M.); (M.N.); (A.G.W.); (D.L.); (C.W.)
| | - Khalil Ahmed Memon
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (A.N.K.); (M.H.); (A.R.R.); (K.A.M.); (M.N.); (A.G.W.); (D.L.); (C.W.)
| | - Muhammad Rizwan
- US Pakistan Center for Advanced Studies in Water, Mehran University of Engineering and Technology; Jamshoro 76062, Pakistan;
| | - Mostafa Nagi
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (A.N.K.); (M.H.); (A.R.R.); (K.A.M.); (M.N.); (A.G.W.); (D.L.); (C.W.)
| | - Abeselom Ghirmai Woldemicael
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (A.N.K.); (M.H.); (A.R.R.); (K.A.M.); (M.N.); (A.G.W.); (D.L.); (C.W.)
| | - Dan Li
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (A.N.K.); (M.H.); (A.R.R.); (K.A.M.); (M.N.); (A.G.W.); (D.L.); (C.W.)
| | - Chun Wang
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (A.N.K.); (M.H.); (A.R.R.); (K.A.M.); (M.N.); (A.G.W.); (D.L.); (C.W.)
| | - Changhai Wang
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China; (A.N.K.); (M.H.); (A.R.R.); (K.A.M.); (M.N.); (A.G.W.); (D.L.); (C.W.)
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49
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Yin Z, Zhu L, Li S, Hu T, Chu R, Mo F, Hu D, Liu C, Li B. A comprehensive review on cultivation and harvesting of microalgae for biodiesel production: Environmental pollution control and future directions. BIORESOURCE TECHNOLOGY 2020; 301:122804. [PMID: 31982297 DOI: 10.1016/j.biortech.2020.122804] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 05/05/2023]
Abstract
Biodiesel is one of the best promising candidates in response to the energy crisis, since it has the capability to minimize most of the environmental problems. Microalgae, as the feedstock of third-generation biodiesel, are considered as one of the most sustainable resources. However, microalgae production for biodiesel feedstock on a large scale is still limited, because of the influences of lipid contents, biomass productivities, lipid extraction technologies, the water used in microalgae cultivation and processes of biomass harvesting. This paper firstly reviews the recent advances in microalgae cultivation and growth processes. Subsequently, current microalgae harvesting technologies are summarized and flocculation mechanisms are analyzed, while the characteristics that the ideal harvesting methods should have are summarized. This review also summarizes the environmental pollution control performances and the key challenges in future. The key suggestions and conclusions in the paper can offer a promising roadmap for the cost-effective biodiesel production.
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Affiliation(s)
- Zhihong Yin
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Liandong Zhu
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China; Faculty of Technology, and Vaasa Energy Institute, University of Vaasa, PO Box 700, FI-65101 Vaasa, Finland.
| | - Shuangxi Li
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Tianyi Hu
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Ruoyu Chu
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Fan Mo
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Dan Hu
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Chenchen Liu
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Bin Li
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
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50
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da Silva Nonato N, Nottar Escobar EL, Kochepka DM, Bianchini Derner R, Montes D’Oca MG, Corazza ML, Pereira Ramos L. Extraction of Muriella decolor lipids using conventional and pressurized solvents and characterization of their fatty acid profile for biodiesel applications. J Supercrit Fluids 2020. [DOI: 10.1016/j.supflu.2020.104750] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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