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Caparroz M, Guzmán JL, Berenguel M, Acién FG. A novel data-driven model for prediction and adaptive control of pH in raceway reactor for microalgae cultivation. N Biotechnol 2024; 82:1-13. [PMID: 38615946 DOI: 10.1016/j.nbt.2024.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 04/05/2024] [Accepted: 04/11/2024] [Indexed: 04/16/2024]
Abstract
This work proposes a new data-driven model to estimate and predict pH dynamics in freshwater raceway photobioreactors. The resulting model is based purely on data measured from the reactor and divides the pH dynamics into two different behaviors. One behavior is described by the variation of pH due to the photosynthesis phenomena made by microalgae; and the other comes from the effect of CO2 injections into the medium for control purposes. Moreover, it was observed that the model parameters vary throughout the day depending on the weather conditions and reactor status. Thus, a decision tree algorithm is also developed to capture the parameter variation based on measured variables of the system, such as solar radiation, medium temperature, and medium level. The proposed model has been validated for a data set of more than 100 days during 10 months in a semi-industrial raceway reactor, covering a wide range of weather and system scenarios. Additionally, the proposed model was used to design an adaptive control algorithm which was also experimentally tested and compared with a classical fixed parameter control approach.
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Affiliation(s)
- M Caparroz
- University of Almería, Department of Informatics, ceiA3, CIESOL, Ctra. Sacramento, Almería 04120, Spain
| | - J L Guzmán
- University of Almería, Department of Informatics, ceiA3, CIESOL, Ctra. Sacramento, Almería 04120, Spain.
| | - M Berenguel
- University of Almería, Department of Informatics, ceiA3, CIESOL, Ctra. Sacramento, Almería 04120, Spain
| | - F G Acién
- University of Almería, Department of Chemical Engineering, ceiA3, CIESOL, Ctra. Sacramento, Almería 04120, Spain
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2
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Chin GJWL, Andrew AR, Abdul-Sani ER, Yong WTL, Misson M, Anton A. The effects of light intensity and nitrogen concentration to enhance lipid production in four tropical microalgae. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2023. [DOI: 10.1016/j.bcab.2023.102660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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3
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Shareefdeen Z, Elkamel A, Babar ZB. Recent Developments on the Performance of Algal Bioreactors for CO 2 Removal: Focusing on the Light Intensity and Photoperiods. BIOTECH (BASEL (SWITZERLAND)) 2023; 12:biotech12010010. [PMID: 36648836 PMCID: PMC9844339 DOI: 10.3390/biotech12010010] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 12/20/2022] [Accepted: 12/30/2022] [Indexed: 01/13/2023]
Abstract
This work presents recent developments of algal bioreactors used for CO2 removal and the factors affecting the reactor performance. The main focus of the study is on light intensity and photoperiods. The role of algae in CO2 removal, types of algal species used in bioreactors and conventional types of bioreactors including tubular bioreactor, vertical airlift reactor, bubble column reactor, flat panel or plate reactor, stirred tank reactor and specific type bioreactors such as hollow fibre membrane and disk photobioreactors etc. are discussed in details with respect to utilization of light. The effects of light intensity, light incident, photoinhibition, light provision arrangements and photoperiod on the performance of algal bioreactors for CO2 removal are also discussed. Efficient operation of algal photobioreactors cannot be achieved without the improvement in the utilization of incident light intensity and photoperiods. The readers may find this article has a much broader significance as algae is not only limited to removal or sequestration of CO2 but also it is used in a number of commercial applications including in energy (biofuel), nutritional and food sectors.
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Affiliation(s)
- Zarook Shareefdeen
- Department of Chemical and Biological Engineering, American University of Sharjah, Sharjah P.O. Box 26666, United Arab Emirates
- Correspondence:
| | - Ali Elkamel
- Department of Chemical Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
- Department of Chemical Engineering, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab Emirates
| | - Zaeem Bin Babar
- Institute of Environmental Sciences and Engineering (IESE), School of Civil and Environmental Engineering (SCEE), National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan
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4
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Sandaka BP, Kumar J. Alternative vehicular fuels for environmental decarbonization: a critical review of challenges in using electricity, hydrogen, and biofuels as a sustainable vehicular fuel. CHEMICAL ENGINEERING JOURNAL ADVANCES 2023. [DOI: 10.1016/j.ceja.2022.100442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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5
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Krasaesueb N, Boonnorat J, Maneeruttanarungroj C, Khetkorn W. Highly effective reduction of phosphate and harmful bacterial community in shrimp wastewater using short-term biological treatment with immobilized engineering microalgae. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 325:116452. [PMID: 36257228 DOI: 10.1016/j.jenvman.2022.116452] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/29/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
Shrimp farming wastewater includes high amounts of phosphate and microbiological contaminants, necessitating further treatment before release into receiving water bodies. After 24 h of shrimp wastewater treatment, alginate beads containing the blue-green algal Synechocystis strain lacking the phosphate regulator gene (mutant strain ΔSphU) at 150 mg L-1 reduced phosphate content from 17.5 mg L-1 to 5.0 mg L-1, representing 71.5% removal efficiency, with phosphate removal rate reaching 6.9 mg gDW-1 h-1 during photobioreactor operation. For short-term treatment, removal rates of nitrate, ammonium and nitrite were 42.7, 48.5 and 92.9%, respectively. Microalgal encapsulated beads also impacted the bacterial community composition dynamics in shrimp wastewater. Next-generation sequencing targeting the V3-V4 region of the 16S rDNA gene showed significant differences in bacterial community composition after 24 h of treatment. Proteobacteria are the most abundant phylum in shrimp wastewater. After 24 h of bioremediation, reductions of harmful bacteria in the Cellvibrionaceae and Pseudomonadaceae families were recorded at 5.85 and 3.18%, respectively. Engineered microalgal immobilization under optimal conditions can be applied as an alternative short-term bioremediation strategy to remove phosphate and other harmful microbial contamination from shrimp farming wastewater.
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Affiliation(s)
- Nattawut Krasaesueb
- Division of Biology, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi (RMUTT), Thanyaburi, Pathum Thani, 12110, Thailand
| | - Jarungwit Boonnorat
- Department of Environmental Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT), Thanyaburi, Pathum Thani, 12110, Thailand
| | - Cherdsak Maneeruttanarungroj
- Department of Biology, School of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand; Bioenergy Research Unit, School of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok, 10520, Thailand
| | - Wanthanee Khetkorn
- Division of Biology, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi (RMUTT), Thanyaburi, Pathum Thani, 12110, Thailand.
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Vignesh P, Jayaseelan V, Pugazhendiran P, Prakash MS, Sudhakar K. Nature-inspired nano-additives for Biofuel application – A Review. CHEMICAL ENGINEERING JOURNAL ADVANCES 2022. [DOI: 10.1016/j.ceja.2022.100360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
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7
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Wu M, Wu G, Lu F, Wang H, Lei A, Wang J. Microalgal photoautotrophic growth induces pH decrease in the aquatic environment by acidic metabolites secretion. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2022; 15:115. [PMID: 36289523 PMCID: PMC9608927 DOI: 10.1186/s13068-022-02212-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 10/08/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Microalgae can absorb CO2 during photosynthesis, which causes the aquatic environmental pH to rise. However, the pH is reduced when microalga Euglena gracilis (EG) is cultivated under photoautotrophic conditions. The mechanism behind this unique phenomenon is not yet elucidated. RESULTS The present study evaluated the growth of EG, compared to Chlorella vulgaris (CV), as the control group; analyzed the dissolved organic matter (DOM) in the aquatic environment; finally revealed the mechanism of the decrease in the aquatic environmental pH via comparative metabolomics analysis. Although the CV cell density was 28.3-fold that of EG, the secreted-DOM content from EG cell was 49.8-fold that of CV (p-value < 0.001). The main component of EG's DOM was rich in humic acids, which contained more DOM composed of chemical bonds such as N-H, O-H, C-H, C=O, C-O-C, and C-OH than that of CV. Essentially, the 24 candidate biomarkers metabolites secreted by EG into the aquatic environment were acidic substances, mainly lipids and lipid-like molecules, organoheterocyclic compounds, organic acids, and derivatives. Moreover, six potential critical secreted-metabolic pathways were identified. CONCLUSIONS This study demonstrated that EG secreted acidic metabolites, resulting in decreased aquatic environmental pH. This study provides novel insights into a new understanding of the ecological niche of EG and the rule of pH change in the microalgae aquatic environment.
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Affiliation(s)
- Mingcan Wu
- grid.263488.30000 0001 0472 9649Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060 China ,grid.428986.90000 0001 0373 6302State Key Laboratory of Marine Resource Utilization in South China Sea, College of Oceanology, Hainan University, Haikou, 570228 China
| | - Guimei Wu
- grid.428986.90000 0001 0373 6302State Key Laboratory of Marine Resource Utilization in South China Sea, College of Oceanology, Hainan University, Haikou, 570228 China
| | - Feimiao Lu
- grid.428986.90000 0001 0373 6302State Key Laboratory of Marine Resource Utilization in South China Sea, College of Oceanology, Hainan University, Haikou, 570228 China
| | - Hongxia Wang
- grid.9227.e0000000119573309Center for Microalgal Biotechnology and Biofuels, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072 China
| | - Anping Lei
- grid.263488.30000 0001 0472 9649Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060 China
| | - Jiangxin Wang
- grid.263488.30000 0001 0472 9649Shenzhen Key Laboratory of Marine Bioresource and Eco-Environmental Science, Shenzhen Engineering Laboratory for Marine Algal Biotechnology, Guangdong Provincial Key Laboratory for Plant Epigenetics, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen, 518060 China
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Ganesh Saratale R, Ponnusamy VK, Jeyakumar RB, Sirohi R, Piechota G, Shobana S, Dharmaraja J, Lay CH, Dattatraya Saratale G, Seung Shin H, Ashokkumar V. Microalgae cultivation strategies using cost-effective nutrient sources: Recent updates and progress towards biofuel production. BIORESOURCE TECHNOLOGY 2022; 361:127691. [PMID: 35926554 DOI: 10.1016/j.biortech.2022.127691] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/19/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
Scientists are grabbing huge attention as well as consciousness on non-renewable energy sources for the global energy crises because of gradual increase in oil price, fast depletion or low availability of resources, and the release of more toxic-gases (CO2, SOx, NxO) during exhaustion, etc. Due to such hitches, the key need is to find alternative biofuels or feedstocks to replace fossil fuel energy demands worldwide. Currently, microalgae have become intrigued feedstock candidates (3rd generation source of biofuel) to replace nearly 50-60 % of fossil fuels due to high production of biomass and oil, mitigating CO2 and wastewater remediation. The present work demonstrated the current developments and future perspectives on large-scale algal cultivation strategies for the biorefinery economy. In addition, various advanced cultivation techniques adopted for enhanced biomass production and cost-effective methods for bioenergy production were detailly discussed.
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Affiliation(s)
- Rijuta Ganesh Saratale
- Research Institute of Integrative Life Sciences, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Republic of Korea
| | - Vinoth Kumar Ponnusamy
- Department of Medicinal and Applied Chemistry, and Research Center for Environmental Medicine, Kaohsiung Medical University (KMU), Kaohsiung City, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital (KMUH), Kaohsiung City, Taiwan
| | - Rajesh Banu Jeyakumar
- Department of Life Sciences, Central University of Tamil Nadu, Thiruvarur 610005, India
| | - Ranjna Sirohi
- Department of Chemical and Biological Engineering, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea; Centre for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India
| | - Grzegorz Piechota
- GP CHEM. Laboratory of Biogas Research and Analysis, Legionów 40a/3, 87-100 Toruń, Poland
| | - Sutha Shobana
- Green Technology and Sustainable Development in Construction Research Group, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Viet Nam
| | - Jeyaprakash Dharmaraja
- Division of Chemistry, Faculty of Science and Humanities, AAA College of Engineering and Technology, Amathur 626005, Virudhunagar District, Tamil Nadu, India
| | - Chyi-How Lay
- Master's Program of Green Energy Science and Technology, Feng Chia University, Taichung, Taiwan
| | - Ganesh Dattatraya Saratale
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Republic of Korea
| | - Han Seung Shin
- Department of Food Science and Biotechnology, Dongguk University-Seoul, Ilsandong-gu, Goyang-si, Gyeonggido 10326, Republic of Korea
| | - Veeramuthu Ashokkumar
- Center for Transdisciplinary Research, Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai 600077, India.
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9
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Zhao X, Meng X, Liu Y, Bai S, Li B, Li H, Hou N, Li C. Single-cell sorting of microalgae and identification of optimal conditions by using response surface methodology coupled with life-cycle approaches. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 832:155061. [PMID: 35395299 DOI: 10.1016/j.scitotenv.2022.155061] [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: 03/21/2022] [Revised: 04/01/2022] [Accepted: 04/01/2022] [Indexed: 06/14/2023]
Abstract
Response surface methodology (RSM) has been widely used to identify optimal conditions for environmental microorganisms to maximize degrading pollutants and accumulating biomass. However, to date, environmental impact and economic cost have rarely been considered. In this study, a single cell of microalgae Chlorella sorokiniana ZM-5 was sorted, and its enrichment was carried out for the first time. The optimized conditions by RSM for achieving the highest COD, TN, TP removal and 352.61 mg/g lipid production were 24 h light time, 4.3:1C/N, 7.2 pH, and 30 °C temperature, respectively. Life-cycle approaches were then carried out upon this illustrative case, and the results indicated that the implementation of the above optimal conditions could reduce the total environmental impact by 48.0% and the total economic impact by 10.2%. This study showed the feasibility of applying life-cycle approaches to examine the optimal conditions of a biological process in terms of minimizing environmental impact and economic costs.
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Affiliation(s)
- Xinyue Zhao
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Xiangwei Meng
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Yan Liu
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Shunwen Bai
- School of Environment, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Bei Li
- State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Changchun 130033, China; HOOKE Instruments Ltd., Changchun 130033, China
| | - Hang Li
- HOOKE Instruments Ltd., Changchun 130033, China
| | - Ning Hou
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China
| | - Chunyan Li
- College of Resource and Environment, Northeast Agricultural University, Harbin 150030, China.
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10
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Lim HR, Khoo KS, Chia WY, Chew KW, Ho SH, Show PL. Smart microalgae farming with internet-of-things for sustainable agriculture. Biotechnol Adv 2022; 57:107931. [PMID: 35202746 DOI: 10.1016/j.biotechadv.2022.107931] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 12/28/2021] [Accepted: 02/17/2022] [Indexed: 12/30/2022]
Abstract
Agriculture farms such as crop, aquaculture and livestock have begun the implementation of Internet of Things (IoT) and artificial intelligence (AI) technology in improving their productivity and product quality. However, microalgae farming which requires precise monitoring, controlling and predicting the growth of microalgae biomass has yet to incorporate with IoT and AI technology, as it is still in its infancy phase. Particularly, the cultivation stage of microalgae involves many essential parameters (i.e. biomass concentration, pH, light intensity, temperature and tank level) which require precise monitoring as these parameters are important to ensure an effective biomass productivity in the microalgae farming. Besides, the conventional practices in the current process equipment are still powered by electricity, thus further development by integrating IoT into these processes can ease the production process. Further to that, many researchers has studied the machine learning approach for the identification and classification of microalgae. However, there are still limited studies reported on applying machine learning for the application of microalgae industry such as optimising microalgae cultivation for higher biomass productivity. Therefore, the implementation of IoT and AI in microalgae farming can contribute to the development of the global microalgae industry. The purpose of this current review paper focuses on the overview microalgae biomass production process along with the implementation of IoT toward the future of smart farming. To bridge the gap between the conventional and microalgae smart farming, this paper also highlights the insights on the implementation phases of microalgae smart farming starting from the infant stage that involves the installation and programming of IoT hardware. Then, it is followed by the application of machine learning to predict and auto-optimise the microalgae smart farming process. Furthermore, the process setup and detailed overview of microalgae farming with the integration of IoT have been discussed critically. This review paper would provide a new vision of microalgae farming for microalgae researchers and bio-processing industries into the digitalisation industrial era.
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Affiliation(s)
- Hooi Ren Lim
- State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor Darul Ehsan, Malaysia
| | - Kuan Shiong Khoo
- Faculty of Applied Sciences, UCSI University, UCSI Heights, 56000 Cheras, Kuala Lumpur, Malaysia.
| | - Wen Yi Chia
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor Darul Ehsan, Malaysia
| | - Kit Wayne Chew
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, Malaysia; College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China.
| | - Shih-Hsin Ho
- State Key Laboratory of Urban Water Resources and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China.
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor Darul Ehsan, Malaysia.
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Onay M. Sequential modelling for carbohydrate and bioethanol production from Chlorella saccharophila CCALA 258: a complementary experimental and theoretical approach for microalgal bioethanol production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:14316-14332. [PMID: 34608581 DOI: 10.1007/s11356-021-16831-w] [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: 06/14/2021] [Accepted: 09/27/2021] [Indexed: 06/13/2023]
Abstract
Bioethanol production from microalgal biomass is an attractive concept, and theoretical methods by which bioenergy can be produced indicate saving in both time and efficiency. The aim of the present study was to investigate the efficiencies of carbohydrate and bioethanol production by Chlorella saccharophila CCALA 258 using experimental, semiempirical, and theoretical methods, such as response surface methods (RSMs) and an artificial neural network (ANN) through sequential modeling. In addition, the interactive response surface modeling for determining the optimum conditions for the variables was assessed. The results indicated that the maximum bioethanol concentration was 11.20 g/L using the RSM model and 11.17 g/L using the ANN model under optimum conditions of 6% (v/v %) substrate and 4% (v/v %) inoculum at 96-h fermentation, pH 6, and 40 °C. In addition, the value of the experimental data for carbohydrate concentration was 0.2510 g/g biomass at ANN with the maximums of 50% (v/v) wastewater concentration, 4% (m/m) hydrogen peroxide concentration, and 6000 U/mL enzyme activity. Finally, although the RSM model was more effective than the ANN model for predicting bioethanol concentration, the ANN model yielded more precise values than the RSM model for carbohydrate concentration.
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Affiliation(s)
- Melih Onay
- Department of Environmental Engineering, Computational & Experimental Biochemistry Lab, Van Yuzuncu Yil University, 65080, Van, Turkey.
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12
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Heptapeptide Isolated from Isochrysis zhanjiangensis Exhibited Anti-Photoaging Potential via MAPK/AP-1/MMP Pathway and Anti-Apoptosis in UVB-Irradiated HaCaT Cells. Mar Drugs 2021; 19:md19110626. [PMID: 34822497 PMCID: PMC8625372 DOI: 10.3390/md19110626] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 11/07/2021] [Accepted: 11/07/2021] [Indexed: 01/14/2023] Open
Abstract
Marine microalgae can be used as sustainable protein sources in many fields with positive effects on human and animal health. DAPTMGY is a heptapeptide isolated from Isochrysis zhanjiangensis which is a microalga. In this study, we evaluated its anti-photoaging properties and mechanism of action in human immortalized keratinocytes cells (HaCaT). The results showed that DAPTMGY scavenged reactive oxygen species (ROS) and increase the level of endogenous antioxidants. In addition, through the exploration of its mechanism, it was determined that DAPIMGY exerted anti-photoaging effects. Specifically, the heptapeptide inhibits UVB-induced apoptosis through down-regulation of p53, caspase-8, caspase-3 and Bax and up-regulation of Bcl-2. Thus, DAPTMGY, isolated from I. zhanjiangensis, exhibits protective effects against UVB-induced damage.
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13
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Daneshvar E, Sik Ok Y, Tavakoli S, Sarkar B, Shaheen SM, Hong H, Luo Y, Rinklebe J, Song H, Bhatnagar A. Insights into upstream processing of microalgae: A review. BIORESOURCE TECHNOLOGY 2021; 329:124870. [PMID: 33652189 DOI: 10.1016/j.biortech.2021.124870] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 02/10/2021] [Accepted: 02/12/2021] [Indexed: 06/12/2023]
Abstract
The aim of this review is to provide insights into the upstream processing of microalgae, and to highlight the advantages of each step. This review discusses the most important steps of the upstream processing in microalgae research such as cultivation modes, photobioreactors design, preparation of culture medium, control of environmental factors, supply of microalgae seeds and monitoring of microalgal growth. An extensive list of bioreactors and their working volumes used, elemental composition of some well-known formulated cultivation media, different types of wastewater used for microalgal cultivation and environmental variables studied in microalgae research has been compiled in this review from the vast literature. This review also highlights existing challenges and knowledge gaps in upstream processing of microalgae and future research needs are suggested.
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Affiliation(s)
- Ehsan Daneshvar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland
| | - Yong Sik Ok
- Korea Biochar Research Center, APRU Sustainable Waste Management Program and Division of Environmental Science and Ecological Engineering, Korea University, Anam-ro 145, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Samad Tavakoli
- Beijing Higher Institution Engineering Research Center of Animal Product, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Binoy Sarkar
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, United Kingdom
| | - Sabry M Shaheen
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; King Abdulaziz University, Faculty of Meteorology, Environment, and Arid Land Agriculture, Department of Arid Land Agriculture, Jeddah 21589, Saudi Arabia; University of Kafrelsheikh, Faculty of Agriculture, Department of Soil and Water Sciences, 33516 Kafr El-Sheikh, Egypt
| | - Hui Hong
- Beijing Higher Institution Engineering Research Center of Animal Product, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Xinghua Industrial Research Centre for Food Science and Human Health, China Agricultural University, Xinghua, Jiangsu 225700, China
| | - Yongkang Luo
- Beijing Higher Institution Engineering Research Center of Animal Product, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China; Xinghua Industrial Research Centre for Food Science and Human Health, China Agricultural University, Xinghua, Jiangsu 225700, China
| | - Jörg Rinklebe
- University of Wuppertal, School of Architecture and Civil Engineering, Institute of Foundation Engineering, Water- and Waste-Management, Laboratory of Soil- and Groundwater-Management, Pauluskirchstraße 7, 42285 Wuppertal, Germany; University of Sejong, Department of Environment, Energy and Geoinformatics, 98 Gunja-Dong, Guangjin-Gu, Seoul, Republic of Korea
| | - Hocheol Song
- Department of Environment and Energy, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Republic of Korea
| | - Amit Bhatnagar
- Department of Separation Science, LUT School of Engineering Science, LUT University, Sammonkatu 12, FI-50130 Mikkeli, Finland.
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14
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Sero ET, Siziba N, Bunhu T, Shoko R. Isolation and screening of microalgal species, native to Zimbabwe, with potential use in biodiesel production. ALL LIFE 2021. [DOI: 10.1080/26895293.2021.1911862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
| | - Nqobizitha Siziba
- Department of Biology, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
| | - Tavengwa Bunhu
- Department of Chemistry, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
| | - Ryman Shoko
- Department of Biology, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
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Alami AH, Alasad S, Ali M, Alshamsi M. Investigating algae for CO 2 capture and accumulation and simultaneous production of biomass for biodiesel production. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 759:143529. [PMID: 33229076 DOI: 10.1016/j.scitotenv.2020.143529] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 10/21/2020] [Accepted: 10/27/2020] [Indexed: 06/11/2023]
Abstract
Carbon capture and sequestration technologies are used to reduce carbon emissions. Membranes, solvents, and adsorbents are the three major methods of CO2 capture. One of the promising methods is the use of algae to absorb CO2 from flue gases and convert it into biomass. Algae have great potential as renewable fuel sources and CO2 capture using photosynthesis for carbon fixation has also attracted much attention. This paper presents an extensive and in-depth report on the utilization of algae for carbon capture and accumulation. This is done in conjunction with cultivating the algae for the production of biomass for biodiesel production. Different systems are investigated for algae cultivation as well as carbon capture to effectively mitigate carbon emissions. The performance and productivity of these biosystems depend on various conditions including algae type, light sources, nutrients, pH, temperature, and mass transfer. Macroalgae and microalgae species were explored to determine their suitability for carbon capture and sequestration, along with the production of biodiesel. The steps for producing biodiesel were comprehensively reviewed, which are harvesting, dehydrating, oil extraction, oil refining, and transesterification. This technology combines active carbon capture with the potential of biodiesel production.
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Affiliation(s)
- Abdul Hai Alami
- Sustainable and Renewable Energy Engineering, University of Sharjah, P.O.Box 27272, Sharjah, United Arab Emirates; Center for Advanced Materials Research, Research Institute of Science and Engineering (RISE), University of Sharjah, Sharjah, P.O.Box 27272, United Arab Emirates.
| | - Shamma Alasad
- Sustainable and Renewable Energy Engineering, University of Sharjah, P.O.Box 27272, Sharjah, United Arab Emirates
| | - Mennatalah Ali
- Sustainable and Renewable Energy Engineering, University of Sharjah, P.O.Box 27272, Sharjah, United Arab Emirates
| | - Maitha Alshamsi
- Sustainable and Renewable Energy Engineering, University of Sharjah, P.O.Box 27272, Sharjah, United Arab Emirates
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Abstract
The need to reduce costs associated with the production of microalgae biomass has encouraged the coupling of process with wastewater treatment. Emerging pollutants in municipal, industrial, and agricultural wastewaters, ranging from pharmaceuticals to metals, endanger public health and natural resources. The use of microalgae has, in fact, been shown to be an efficient method in water-treatment processes and presents several advantages, such as carbon sequestration, and an opportunity to develop innovative bioproducts with applications to several industries. Using a bibliometric analysis software, SciMAT, a mapping of the research field was performed, analyzing the articles produced between 1981 and 2018, aiming to identifying the hot topics and trends studied until now. The application of microalgae on water bioremediation is an evolving research field that currently focuses on developing efficient and cost-effective treatments methods that also enable the production of add-value products, leading to a blue and circular economy.
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Chowdury KH, Nahar N, Deb UK. The Growth Factors Involved in Microalgae Cultivation for Biofuel Production: A Review. ACTA ACUST UNITED AC 2020. [DOI: 10.4236/cweee.2020.94012] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Qi F, Pei H, Mu R, Ma G, Wu D, Han Q. Characterization and optimization of endogenous lipid accumulation in Chlorella vulgaris SDEC-3M ability to rapidly accumulate lipid for reversing nightly lipid loss. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:151. [PMID: 31236138 PMCID: PMC6580531 DOI: 10.1186/s13068-019-1493-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Accepted: 06/09/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND During inevitable light/dark cycle, lipid productivity of outdoor microalgae photoautotrophic cultivation is lowered by nightly biomass and lipid loss. To minimize, or even reverse the nightly lipid loss, it was expected that lipid accumulation would not cease, even if at night. Without relying on photosynthesis and organic matter in media, endogenous lipid accumulation that consumes energy and carbon sources derived from cells themselves, namely endogenous accumulation, is the only way for lipid production. The main aims of the present study was to characteristic endogenously accumulated lipid, confirm feasibility to reverse nightly lipid loss, and determine optimal conditions and its quality suitability for biodiesel feedstock production under stress conditions. RESULTS Chlorella vulgaris SDEC-3M ability to rapidly accumulated lipid under stress conditions was cultivated for 12 h in darkness, and the effects of various conditions on lipid accumulation and biomass loss were analyzed. Under non-stress conditions, lipid contents dropped. Under certain stress conditions, conversely, the lipid contents were substantially improved so that net nightly endogenous lipid accumulation was observed. Under the optimal conditions (aeration mode with 0.10 vvm and 15% CO2, 5-10 mg L-1 of NO3 --N, 30-35 °C, approximate 2500 mg L-1 of biomass), the lipid content was doubled and increased lipid was approximately 180 mg L-1. Among stress conditions, N-deficiency had the most significant effect on endogenous lipid accumulation, and the optimum results were characterized under relatively low-N concentrations. Higher consistency between loss in carbohydrate and gain in lipid confirmed accumulated lipid endogenously conversed from carbohydrate. Based on the analyses of fatty acids profiles and prediction of kinematic viscosity, specific gravity, cloud point, cetane number and iodine value, it was confirmed that the quality of lipid obtained under optimal conditions complied with biodiesel quality standards. CONCLUSION Via triggering endogenous lipid accumulation by stress conditions, even in darkness, SDEC-3M can synthesize enough lipid suitable for biodiesel feedstock. It implies that the lipid accumulation phase in two-phase strategy can be scheduled at night, and following biomass production stage in light, which should be a solution to improve the lipid yield and quality of large-scale outdoor photoautotrophic microalgae cultivation for biodiesel production.
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Affiliation(s)
- Feng Qi
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101 China
- Shandong Provincial Engineering Centre on Environmental Science and Technology, Jinan, 250061 China
- Shandong Co-innovation Center of Green Building, Jinan, 250101 China
| | - Haiyan Pei
- Shandong Provincial Engineering Centre on Environmental Science and Technology, Jinan, 250061 China
- School of Environmental Science and Engineering, Shandong University, Qingdao, 266237 China
| | - Ruimin Mu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101 China
- Shandong Co-innovation Center of Green Building, Jinan, 250101 China
| | - Guixia Ma
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101 China
| | - Daoji Wu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, 250101 China
| | - Qiang Han
- Jinan Urban Construction Group Co., Ltd, Jinan, 250031 China
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Karuppan R, Javee A, Gopidas SK, Subramani N. Influence of agriculture fertilizer for the enhanced growth and astaxanthin production from Haematococcus lacustris RRGK isolated from Himachal Pradesh, India. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-0543-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Krasaesueb N, Incharoensakdi A, Khetkorn W. Utilization of shrimp wastewater for poly-β-hydroxybutyrate production by Synechocystis sp. PCC 6803 strain ΔSphU cultivated in photobioreactor. ACTA ACUST UNITED AC 2019; 23:e00345. [PMID: 31193428 PMCID: PMC6529710 DOI: 10.1016/j.btre.2019.e00345] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 05/12/2019] [Accepted: 05/12/2019] [Indexed: 12/01/2022]
Abstract
Shrimp wastewater is a rich source of P- and N-compounds suitable for cyanobacterial growth. Phosphate in shrimp wastewater can be efficiently removed by Synechocystis ΔSphU. ΔSphU accumulates high PHB with commercial value when shrimp wastewater contains low nitrate level. Shrimp wastewater can be used for biodegradable plastic production by cyanobacterial cell.
The wastewater discharge from the intensive shrimp aquaculture contains high concentration of nutrients, which can lead to eutrophication. This study aimed to reuse the shrimp wastewater for low cost cyanobacterial cultivation to produce biodegradable plastic poly-β-hydroxybutyrate (PHB). The Synechocystis sp. PCC 6803 (ΔSphU) lacking phosphate regulator (SphU) could utilize nutrients in shrimp wastewater for promoting biomass yield of 500 mg L−1 after 14 days. The ΔSphU showed the highest phosphate uptake rate of 20.16 mggDw−1d−1 at the first day of photobioreactor running. In addition, the nutrient removal efficiencies were 96.99% for phosphate, 80.10% for nitrate, 67.90% for nitrite and 98.07% for ammonium. The reduction of nitrate in shrimp wastewater due to nitrogen assimilation could induce PHB accumulation in ΔSphU. The highest PHB content was 32.48% (w/w) DW, with the maximum PHB productivity of 12.73 mg L−1d−1. The produced PHB of ΔSphU had material properties similar to those of the commercial PHB.
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Affiliation(s)
- Nattawut Krasaesueb
- Division of Biology, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Thanyaburi, Pathumthani, 12110, Thailand
| | - Aran Incharoensakdi
- Laboratory of Cyanobacterial Biotechnology, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.,Academy of Science, Royal Society of Thailand, Bangkok 10300, Thailand
| | - Wanthanee Khetkorn
- Division of Biology, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Thanyaburi, Pathumthani, 12110, Thailand
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Jebali A, Acién FG, Jiménez-Ruiz N, Gómez C, Fernández-Sevilla JM, Mhiri N, Karray F, Sayadi S, Molina-Grima E. Evaluation of native microalgae from Tunisia using the pulse-amplitude-modulation measurement of chlorophyll fluorescence and a performance study in semi-continuous mode for biofuel production. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:119. [PMID: 31110560 PMCID: PMC6511200 DOI: 10.1186/s13068-019-1461-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 05/02/2019] [Indexed: 05/02/2023]
Abstract
BACKGROUND Microalgae are attracting much attention as a promising feedstock for renewable energy production, while simultaneously providing environmental benefits. So far, comparison studies for microalgae selection for this purpose were mainly based on data obtained from batch cultures, where the lipid content and the growth rate were the main selection parameters. The present study evaluates the performance of native microalgae strains in semi-continuous mode, considering the suitability of the algal-derived fatty acid composition and the saponifiable lipid productivity as selection criteria for microalgal fuel production. Evaluation of the photosynthetic performance and the robustness of the selected strain under outdoor conditions was conducted to assess its capability to grow and tolerate harsh environmental growth conditions. RESULTS In this study, five native microalgae strains from Tunisia (one freshwater and four marine strains) were isolated and evaluated as potential raw material to produce biofuel. Firstly, molecular identification of the strains was performed. Then, experiments in semi-continuous mode at different dilution rates were carried out. The local microalgae strains were characterized in terms of biomass and lipid productivity, in addition to protein content, and fatty acid profile, content and productivity. The marine strain Chlorella sp. showed, at 0.20 1/day dilution rate, lipid and biomass productivities of 35.10 mg/L day and 0.2 g/L day, respectively. Moreover, data from chlorophyll fluorescence measurements demonstrated the robustness of this strain as it tolerated extreme outdoor conditions including high (38 °C) and low (10 °C) temperature, and high irradiance (1600 µmol/m2 s). CONCLUSIONS Selection of native microalgae allows identifying potential strains suitable for use in the production of biofuels. The selected strain Chlorella sp. demonstrated adequate performance to be scaled up to outdoor conditions. Although experiments were performed at laboratory conditions, the methodology used in this paper allows a robust evaluation of microalgae strains for potential market applications.
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Affiliation(s)
- A. Jebali
- Laboratory of Environmental Bioprocesses, Sfax Centre of Biotechnology, University of Sfax, P.O. Box 1177, 3018 Sfax, Tunisia
- Department of Chemical Engineering, University of Almería, Carretera Sacramento s/n, 04120 Almería, Spain
| | - F. G. Acién
- Department of Chemical Engineering, University of Almería, Carretera Sacramento s/n, 04120 Almería, Spain
| | - N. Jiménez-Ruiz
- Department of Chemical Engineering, University of Almería, Carretera Sacramento s/n, 04120 Almería, Spain
| | - C. Gómez
- Department of Chemical Engineering, University of Almería, Carretera Sacramento s/n, 04120 Almería, Spain
| | - J. M. Fernández-Sevilla
- Department of Chemical Engineering, University of Almería, Carretera Sacramento s/n, 04120 Almería, Spain
| | - N. Mhiri
- Laboratory of Environmental Bioprocesses, Sfax Centre of Biotechnology, University of Sfax, P.O. Box 1177, 3018 Sfax, Tunisia
| | - F. Karray
- Laboratory of Environmental Bioprocesses, Sfax Centre of Biotechnology, University of Sfax, P.O. Box 1177, 3018 Sfax, Tunisia
| | - S. Sayadi
- Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar
| | - E. Molina-Grima
- Department of Chemical Engineering, University of Almería, Carretera Sacramento s/n, 04120 Almería, Spain
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Tango MD, Calijuri ML, Assemany PP, do Couto EDA. Microalgae cultivation in agro-industrial effluents for biodiesel application: effects of the availability of nutrients. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2018; 78:57-68. [PMID: 30101789 DOI: 10.2166/wst.2018.180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The present study evaluated the cultivation of microalgae in a photobioreactor using effluents from the meat-processing industry, which had been previously treated at the primary and secondary levels. Scenedesmus sp. was the dominant genus in the phytoplankton community in both of the evaluated effluents. The different nutritional conditions affected the production of biomass, which reached 1,160 mg/L of volatile suspended solids (VSS) and 371 mg/L of VSS with cultivation in the primary (PE) and secondary effluents (SE), respectively. In both effluents, great removal efficiencies close to quantification limits were observed for ammoniacal nitrogen and soluble phosphorus. Regarding the accumulation of lipids, there were no considerable differences between the effluents. The highest lipid productivity that was observed in the PE, which reached 3.7 g/m²·d, was attributed to its larger production of biomass as a consequence of its better nutritional condition in relation to the SE.
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Affiliation(s)
- Mariana Daniel Tango
- Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Department of Civil Engineering, Environmental Engineering Group - nPA, Campus Viçosa, Viçosa, MG 36570-000, Brazil E-mail:
| | - Maria Lúcia Calijuri
- Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Department of Civil Engineering, Environmental Engineering Group - nPA, Campus Viçosa, Viçosa, MG 36570-000, Brazil E-mail:
| | - Paula Peixoto Assemany
- Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Department of Civil Engineering, Environmental Engineering Group - nPA, Campus Viçosa, Viçosa, MG 36570-000, Brazil E-mail:
| | - Eduardo de Aguiar do Couto
- Federal University of Viçosa (Universidade Federal de Viçosa/UFV), Department of Civil Engineering, Environmental Engineering Group - nPA, Campus Viçosa, Viçosa, MG 36570-000, Brazil E-mail:
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Scale-up and large-scale production of Tetraselmis sp. CTP4 (Chlorophyta) for CO 2 mitigation: from an agar plate to 100-m 3 industrial photobioreactors. Sci Rep 2018; 8:5112. [PMID: 29572455 PMCID: PMC5865139 DOI: 10.1038/s41598-018-23340-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 02/01/2018] [Indexed: 12/01/2022] Open
Abstract
Industrial production of novel microalgal isolates is key to improving the current portfolio of available strains that are able to grow in large-scale production systems for different biotechnological applications, including carbon mitigation. In this context, Tetraselmis sp. CTP4 was successfully scaled up from an agar plate to 35- and 100-m3 industrial scale tubular photobioreactors (PBR). Growth was performed semi-continuously for 60 days in the autumn-winter season (17th October – 14th December). Optimisation of tubular PBR operations showed that improved productivities were obtained at a culture velocity of 0.65–1.35 m s−1 and a pH set-point for CO2 injection of 8.0. Highest volumetric (0.08 ± 0.01 g L−1 d−1) and areal (20.3 ± 3.2 g m−2 d−1) biomass productivities were attained in the 100-m3 PBR compared to those of the 35-m3 PBR (0.05 ± 0.02 g L−1 d−1 and 13.5 ± 4.3 g m−2 d−1, respectively). Lipid contents were similar in both PBRs (9–10% of ash free dry weight). CO2 sequestration was followed in the 100-m3 PBR, revealing a mean CO2 mitigation efficiency of 65% and a biomass to carbon ratio of 1.80. Tetraselmis sp. CTP4 is thus a robust candidate for industrial-scale production with promising biomass productivities and photosynthetic efficiencies up to 3.5% of total solar irradiance.
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Microalgal Production Systems with Highlights of Bioenergy Production. ENERGY FROM MICROALGAE 2018. [DOI: 10.1007/978-3-319-69093-3_2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Enhancement of biodiesel production in Chlorella vulgaris cultivation using silica nanoparticles. BIOTECHNOL BIOPROC E 2017. [DOI: 10.1007/s12257-016-0657-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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26
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Li H, Li C, Chen J, Liu L, Yang Q. Synthesis of a Pyridine-Zinc-Based Porous Organic Polymer for the Co-catalyst-Free Cycloaddition of Epoxides. Chem Asian J 2017; 12:1095-1103. [DOI: 10.1002/asia.201700258] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 03/19/2017] [Indexed: 11/07/2022]
Affiliation(s)
- He Li
- State Key Laboratory of Catalysis; i ChEM; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
| | - Chunzhi Li
- State Key Laboratory of Catalysis; i ChEM; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Jian Chen
- State Key Laboratory of Catalysis; i ChEM; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Lina Liu
- State Key Laboratory of Catalysis; i ChEM; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Qihua Yang
- State Key Laboratory of Catalysis; i ChEM; Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 China
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Sung MG, Lee B, Kim CW, Nam K, Chang YK. Enhancement of lipid productivity by adopting multi-stage continuous cultivation strategy in Nannochloropsis gaditana. BIORESOURCE TECHNOLOGY 2017; 229:20-25. [PMID: 28092732 DOI: 10.1016/j.biortech.2016.12.100] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 12/26/2016] [Accepted: 12/27/2016] [Indexed: 06/06/2023]
Abstract
In the present study, a novel process-based cultivation system was designed to improve lipid productivity of Nannochloropsis gaditana, an oleaginous microalga that has high potential for biofuel production. Specifically, four flat-panel photobioreactors were connected in series, and this system was subjected to continuous chemostat cultivation by feeding fresh medium to the first reactor at dilution rates of 0.028 and 0.056day-1, which were determined based on Monod kinetics. The results show that the serially connected photobioreactor system achieved 20.0% higher biomass productivity and 46.1% higher fatty acid methyl ester (FAME) productivity than a conventional single photobioreactor with equivalent dilution rate. These results suggest that a process-based approach using serially connected photobioreactors for microalgal cultivation can improve the productivity of lipids that can be used for biofuel production.
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Affiliation(s)
- Min-Gyu Sung
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Bongsoo Lee
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Chul Woong Kim
- Corporate R&D Research Park, LG Chem, 188 Munji-ro, Yeseong-gu, Daejeon, Republic of Korea
| | - Kibok Nam
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea
| | - Yong Keun Chang
- Department of Chemical and Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea; Advanced Biomass R&D Center, #2502 Building W1-3, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea.
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Tran NAT, Padula MP, Evenhuis CR, Commault AS, Ralph PJ, Tamburic B. Proteomic and biophysical analyses reveal a metabolic shift in nitrogen deprived Nannochloropsis oculata. ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.07.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Abdullah MA, Ahmad A, Shah SMU, Shanab SMM, Ali HEA, Abo-State MAM, Othman MF. Integrated algal engineering for bioenergy generation, effluent remediation, and production of high-value bioactive compounds. BIOTECHNOL BIOPROC E 2016. [DOI: 10.1007/s12257-015-0388-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Huang J, Li Y, Wan M, Yan Y, Feng F, Qu X, Wang J, Shen G, Li W, Fan J, Wang W. Novel flat-plate photobioreactors for microalgae cultivation with special mixers to promote mixing along the light gradient. BIORESOURCE TECHNOLOGY 2014; 159:8-16. [PMID: 24632435 DOI: 10.1016/j.biortech.2014.01.134] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Revised: 01/29/2014] [Accepted: 01/31/2014] [Indexed: 06/03/2023]
Abstract
Novel flat-plate photobioreactors (PBRs) with special mixers (type-a, type-b, and type-c) were designed based on increased mixing degree along the light gradient. The hydrodynamic and light regime characteristic of the novel PBRs were investigated through computational fluid dynamics. Compared with the control reactor without mixer, the novel reactors can effectively increase liquid velocity along the light gradient, the frequency of light/dark (L/D) cycles, and the algal growth rates of Chlorella pyrenoidosa. The maximum biomass concentrations in type-a, type-b, and type-c reactors were 42.9% (1.3 g L(-1)), 31.9% (1.2 g L(-1)), and 20.9% (1.1 g L(-1)) higher than that in the control reactor (0.91 g L(-1)), respectively, at an aeration rate of 1.0 vvm. Correlation analysis of algal growth rate with the characteristics of mixing and light regime shows the key factors affecting algal photoautotrophic growth are liquid velocity along the light gradient and L/D cycles rather than the macro-mixing degree.
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Affiliation(s)
- Jianke Huang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Yuanguang Li
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Minxi Wan
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Yi Yan
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Fei Feng
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Xiaoxing Qu
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Jun Wang
- Jiaxing Zeyuan Bio-products Co., Ltd., Jiaxing 314007, PR China
| | - Guomin Shen
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Wei Li
- State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Jianhua Fan
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Weiliang Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, PR China
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The production of light olefins by catalytic cracking of the microalga Isochrysis zhanjiangensis over a modified ZSM-5 catalyst. CHINESE JOURNAL OF CATALYSIS 2014. [DOI: 10.1016/s1872-2067(14)60026-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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