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de Cassia Soares Brandão B, Oliveira CYB, Dos Santos EP, de Abreu JL, Oliveira DWS, da Silva SMBC, Gálvez AO. Microalgae-based domestic wastewater treatment: a review of biological aspects, bioremediation potential, and biomass production with biotechnological high-value. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1384. [PMID: 37889346 DOI: 10.1007/s10661-023-12031-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: 05/02/2023] [Accepted: 10/23/2023] [Indexed: 10/28/2023]
Abstract
This review aims to perform an updated bibliographical survey on the cultivation of microalgae in domestic wastewater with a focus on biotechnological aspects. It was verified that the largest number of researches developed was about cultures in microalgae-bacteria consortium and mixed cultures of microalgae, followed by researches referring to the species Chlorella vulgaris and to the family Scenedesmaceae. According to published studies, these microorganisms are efficient in the biological treatment of domestic wastewater, as well as in the production of high value-added biomass, as they are capable of biosorbing the organic and inorganic compounds present in the culture medium, thus generating cells with high levels of lipids, proteins, and carbohydrates. These compounds are of great importance for different industry sectors, such as pharmaceuticals, food, and also for agriculture and aquaculture. In addition, biomolecules produced by microalgae can be extracted for several biotechnological applications; however, most studies focus on the production of biofuels, with biodiesel being the main one. There are also other emerging applications that still require more in-depth research, such as the use of biomass as a biofertilizer and biostimulant in the production of bioplastic. Therefore, it is concluded that the cultivation of microalgae in domestic wastewater is a sustainable way to promote effluent bioremediation and produce valuable biomass for the biobased industry, contributing to the development of technology for the green economy.
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Affiliation(s)
| | - Carlos Yure B Oliveira
- Departamento de Botânica, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil
| | | | - Jéssika Lima de Abreu
- Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil
| | | | | | - Alfredo Olivera Gálvez
- Departamento de Pesca e Aquicultura, Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil
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Zribi I, Zili F, Ben Ali R, Masmoudi MA, Sayadi S, Ben Ouada H, Chamkha M. Trends in microalgal-based systems as a promising concept for emerging contaminants and mineral salt recovery from municipal wastewater. ENVIRONMENTAL RESEARCH 2023:116342. [PMID: 37290616 DOI: 10.1016/j.envres.2023.116342] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 05/20/2023] [Accepted: 06/05/2023] [Indexed: 06/10/2023]
Abstract
In the context of climate change leading to water scarcity for many people in the world, the treatment of municipal wastewater becomes a necessity. However, the reuse of this water requires secondary and tertiary treatment processes to reduce or eliminate a load of dissolved organic matter and various emerging contaminants. Microalgae have shown hitherto high potential applications of wastewater bioremediation thanks to their ecological plasticity and ability to remediate several pollutants and exhaust gases from industrial processes. However, this requires appropriate cultivation systems allowing their integration into wastewater treatment plants at appropriate insertion costs. This review aims to present different open and closed systems currently used in the treatment of municipal wastewater by microalgae. It provides an exhaustive approach to wastewater treatment systems using microalgae, integrating the most suitable used microalgae species and the main pollutants present in the treatment plants, with an emphasis on emerging contaminants. The remediation mechanisms as well as the capacity to sequester exhaust gases were also described. The review examines constraints and future perspectives of microalgae cultivation systems in this line of research.
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Affiliation(s)
- Ines Zribi
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, B.P 1177, Sfax, 3018, Tunisia.
| | - Fatma Zili
- Laboratory of Blue Biotechnology and Aquatic Bioproducts, National Institute of Marine Sciences and Technologies, 5000, Monastir, Tunisia
| | - Rihab Ben Ali
- Laboratory of Blue Biotechnology and Aquatic Bioproducts, National Institute of Marine Sciences and Technologies, 5000, Monastir, Tunisia
| | - Mohamed Ali Masmoudi
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, B.P 1177, Sfax, 3018, Tunisia
| | - Sami Sayadi
- Biotechnology Program, Center for Sustainable Development, College of Arts and Sciences, Qatar University, 2713, Doha, Qatar.
| | - Hatem Ben Ouada
- Laboratory of Blue Biotechnology and Aquatic Bioproducts, National Institute of Marine Sciences and Technologies, 5000, Monastir, Tunisia.
| | - Mohamed Chamkha
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, B.P 1177, Sfax, 3018, Tunisia.
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Xia Y, Sekine M, Hirahara M, Kishinami H, Yusoff FM, Toda T. Effects of concentration and frequency of CO2 supply on productivity of marine microalga Isochrysis galbana. ALGAL RES 2023. [DOI: 10.1016/j.algal.2023.102985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Morales-Pineda M, García-Gómez ME, Bedera-García R, García-González M, Couso I. CO 2 Levels Modulate Carbon Utilization, Energy Levels and Inositol Polyphosphate Profile in Chlorella. PLANTS (BASEL, SWITZERLAND) 2022; 12:plants12010129. [PMID: 36616258 PMCID: PMC9823770 DOI: 10.3390/plants12010129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/20/2022] [Accepted: 12/22/2022] [Indexed: 05/15/2023]
Abstract
Microalgae have a growing recognition of generating biomass and capturing carbon in the form of CO2. The genus Chlorella has especially attracted scientists' attention due to its versatility in algal mass cultivation systems and its potential in mitigating CO2. However, some aspects of how these green microorganisms respond to increasing concentrations of CO2 remain unclear. In this work, we analyzed Chlorella sorokiniana and Chlorella vulgaris cells under low and high CO2 levels. We monitored different processes related to carbon flux from photosynthetic capacity to carbon sinks. Our data indicate that high concentration of CO2 favors growth and photosynthetic capacity of the two Chlorella strains. Different metabolites related to the tricarboxylic acid cycle and ATP levels also increased under high CO2 concentrations in Chlorella sorokiniana, reaching up to two-fold compared to low CO2 conditions. The signaling molecules, inositol polyphosphates, that regulate photosynthetic capacity in green microalgae were also affected by the CO2 levels, showing a deep profile modification of the inositol polyphosphates that over-accumulated by up to 50% in high CO2 versus low CO2 conditions. InsP4 and InsP6 increased 3- and 0.8-fold, respectively, in Chlorella sorokiniana after being subjected to 5% CO2 condition. These data indicate that the availability of CO2 could control carbon flux from photosynthesis to carbon storage and impact cell signaling integration and energy levels in these green cells. The presented results support the importance of further investigating the connections between carbon assimilation and cell signaling by polyphosphate inositols in microalgae to optimize their biotechnological applications.
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Li J, Tang X, Pan K, Zhu B, Li Y, Wang Z, Zhao Y. Energy metabolism and intracellular pH regulation reveal different physiological acclimation mechanisms of Chlorella strains to high concentrations of CO 2. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 853:158627. [PMID: 36087671 DOI: 10.1016/j.scitotenv.2022.158627] [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: 06/20/2022] [Revised: 09/05/2022] [Accepted: 09/05/2022] [Indexed: 06/15/2023]
Abstract
The intolerance of high CO2 in the exhaust gas is the "bottleneck" limiting the wide application of microalgae for CO2 biosequestration. Around this topic, we selected high-CO2-tolerant (LAMB 33 and 31) and nontolerant (LAMB 122) Chlorella strains to study their different energy metabolisms and cytoplasmic pH regulations in response to high CO2. Under 40 % CO2, LAMB 33 and 31 both showed elevated ATP synthesis, accelerated ATP consumption and fast cytoplasmic pH regulation while exhibiting different acclimating strategies therein: chloroplast acclimations were reflected by high chlorophyll contents in 33 but photosystem transitions in 31; faster mitochondrial acclimations occurred in 33 than in 31; cellular organic carbon mainly flowed to monosaccharide synthesis for 33 but to monosaccharide and protein synthesis for 31; and cytoplasmic pH regulation was attributed to V-ATPase in 31 but not in 33. All the above metabolic processes gradually collapsed in 122, leading to growth inhibition. Our study identified different metabolic acclimation strategies among Chlorella strains to high CO2 and provided new traits for breeding microalgae for CO2 biosequestration.
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Affiliation(s)
- Jun Li
- College of Marine Life Sciences, Department of Marine Ecology, Ocean University of China, Qingdao 266003, China
| | - Xuexi Tang
- 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
| | - Kehou Pan
- Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China; Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Baohua Zhu
- Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China; Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Yun Li
- Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China; Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Ziqi Wang
- College of Marine Life Sciences, Department of Marine Ecology, Ocean University of China, Qingdao 266003, China
| | - 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.
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Shao Y, Fu Y, Chen Y, Abomohra A, He Q, Jin W, Liu J, Tan Z, Li X. Enhancement of black and odorous water treatment coupled with accelerated lipid production by microalgae exposed to 12C 6+ heavy-ion beam irradiation. CHEMOSPHERE 2022; 305:135452. [PMID: 35752308 DOI: 10.1016/j.chemosphere.2022.135452] [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: 04/02/2022] [Revised: 05/29/2022] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
In this study, Auxenochlorella protothecoides (AP-CK) was selected due to its reported high growth potential in sterilized black and odorous water (SBOW). In order to improve the resource utilization level of microalgae for wastewater treatment, AP-CK was mutated using 12C6+ heavy-ion beam irradiation, and a high lipid-containing mutant (AP-34#) was isolated and further evaluated to treat original black and odorous water (OBOW). Compared with the wild type, the maximum removal rates of COD, NH4+-N and TP of the mutant increased by 8.12 ± 0.33%, 10.43 ± 0.54% and 11.97 ± 0.16%, respectively, while maximum dissolved oxygen content increased from 0 to 4.36 ± 0.25 mg/L. Besides, the mutant lipid yield increased by 115.87 ± 3.22% over the wild type in OBOW. The fatty acid profile of AP-34# grown in SBOW and OBOW showed higher proportion of saturated fatty acids (C16:0 and C18:0) and valuable polyunsaturated fatty acids (mainly C20:5n3 and C22:6n3) which are more suitable for biodiesel production and value-added products, respectively. This work provides a new perspective on improving the characteristics of microalgae and an innovative approach for resource-based microalgae wastewater treatment through bioremediation of black and odorous water.
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Affiliation(s)
- Yitong Shao
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Yongsheng Fu
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Yangwu Chen
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Abdelfatah Abomohra
- Department of Environmental Engineering, School of Architecture and Civil Engineering, Chengdu University, Chengdu, 610106, China
| | - Qi He
- Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 611756, China
| | - Wenjie Jin
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Jian Liu
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Zhouliang Tan
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - Xin Li
- Key Laboratory of Environmental and Applied Microbiology, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.
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Fernández-Rodríguez MJ, de la Lama-Calvente D, García-González M, Moreno-Fernández J, Jiménez-Rodríguez A, Borja R, Rincón-Llorente B. Integral Valorization of Two-Phase Olive Mill Solid Waste (OMSW) and Related Washing Waters by Anaerobic Co-digestion of OMSW and the Microalga Raphidocelis subcapitata Cultivated in These Effluents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3219-3227. [PMID: 35254817 PMCID: PMC8931757 DOI: 10.1021/acs.jafc.1c08100] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This study evaluates the comprehensive valorization of the byproducts derived from the two-phase olive oil elaboration process [i.e., olive washing water (OWW), olive oil washing water (OOWW), and olive mill solid waste (OMSW)] in a closed-loop process. Initially, the microalga Raphidocelis subcapitata was grown using a mixture of OWW and OOWW as the culture medium, allowing phosphate, nitrate, sugars, and soluble chemical oxygen demand removal. In a second step, the microalgal biomass grown in the mixture of washing waters was used as a co-substrate together with OMSW for an anaerobic co-digestion process. The anaerobic co-digestion of the combination of 75% OMSW-25% R. subcapitata enhanced the methane yield by 7.0 and 64.5% compared to the anaerobic digestion of the OMSW and R. subcapitata individually. This schedule of operation allowed for integration of all of the byproducts generated from the two-phase olive oil elaboration process in a full valorization system and the establishment of a circular economy concept for the olive oil industry.
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Affiliation(s)
- María José Fernández-Rodríguez
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Campus Universidad Pablo de Olavide, Edificio 46, Carretera de Utrera, km 1, 41013 Sevilla, Spain
- Departamento de Sistemas Físico, Químicos y Naturales, Universidad Pablo de Olavide, Carretera de Utrera, km 1, 41013 Sevilla, Spain
| | - David de la Lama-Calvente
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Campus Universidad Pablo de Olavide, Edificio 46, Carretera de Utrera, km 1, 41013 Sevilla, Spain
| | - Mercedes García-González
- Instituto de Bioquímica Vegetal y Fotosíntesis (IBVF), Centro de Investigaciones Científicas Isla de la Cartuja, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas (CSIC), Avenida Américo Vespucio 49, 41092 Sevilla, Spain
| | - José Moreno-Fernández
- Instituto de Bioquímica Vegetal y Fotosíntesis (IBVF), Centro de Investigaciones Científicas Isla de la Cartuja, Universidad de Sevilla-Consejo Superior de Investigaciones Científicas (CSIC), Avenida Américo Vespucio 49, 41092 Sevilla, Spain
| | - Antonia Jiménez-Rodríguez
- Departamento de Sistemas Físico, Químicos y Naturales, Universidad Pablo de Olavide, Carretera de Utrera, km 1, 41013 Sevilla, Spain
| | - Rafael Borja
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Campus Universidad Pablo de Olavide, Edificio 46, Carretera de Utrera, km 1, 41013 Sevilla, Spain
| | - Bárbara Rincón-Llorente
- Instituto de la Grasa, Consejo Superior de Investigaciones Científicas (CSIC), Campus Universidad Pablo de Olavide, Edificio 46, Carretera de Utrera, km 1, 41013 Sevilla, Spain
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Sheng Y, Mathimani T, Brindhadevi K, Basha S, Elfasakhany A, Xia C, Pugazhendhi A. Combined effect of CO 2 concentration and low-cost urea repletion/starvation in Chlorella vulgaris for ameliorating growth metrics, total and non-polar lipid accumulation and fatty acid composition. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 808:151969. [PMID: 34843758 DOI: 10.1016/j.scitotenv.2021.151969] [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: 10/09/2021] [Revised: 11/10/2021] [Accepted: 11/22/2021] [Indexed: 06/13/2023]
Abstract
Different CO2 concentration such as 0.03, 5, 10 and 15% and low-cost urea repletion/starvation in Chlorella vulgaris on growth, total and non-polar lipid content and fatty acid composition was studied. Chlorella vulgaris grown at 0.03% CO2 apparently revealed inferior biomass yield 0.55 g/L on 14th day compared to CO2 supplemented cells. In the case of CO2 supply, 15% CO2 has unveiled higher biomass yield at about 1.83 g/L on day 12 whereas biomass yield for 5 and 10% CO2 supplemented cells was 1.61 and 1.73 g/L, respectively on 12th day of cultivation. The biomass productivity (g) per liter per day was 32 mg in control condition whereas it was 125, 134 and 144 mg/L/d in 5, 10 and 15% CO2 supplied cells, respectively. Lipid content of the strain grown at control, 5, 10 and 15% CO2 was 21.2, 22.1, 23.4 and 24.6%, respectively and however, without CO2 addition in low-cost urea repleted and urea depleted medium grown cells revealed 21.2 and 24.2%, respectively. Interestingly, strain grown at 15% CO2 supply in urea deplete medium yielded 28.7% lipid and contribution of non-polar lipids in total lipids is 69.7%. Further, the fatty acid composition of the strain grown in 15% CO2 supply in urea depleted medium showed C16:0, C16:1, C18:1 and C18:3 in the level of 30.12, 9.98, 23.43, and 11.97%, respectively compared to control and urea amended condition.
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Affiliation(s)
- Yequan Sheng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China
| | - Thangavel Mathimani
- Department of Energy and Environment, National Institute of Technology, Tiruchirappalli 620015, Tamil Nadu, India
| | - Kathirvel Brindhadevi
- Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India
| | - Sakeenabi Basha
- Department of Community Dentistry, Faculty of Dentistry, Taif University, PO box 11099, Taif 21944, Saudi Arabia
| | - Ashraf Elfasakhany
- Mechanical Engineering Department, College of Engineering, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Changlei Xia
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
| | - Arivalagan Pugazhendhi
- School of Renewable Energy, Maejo University, Chiang Mai, 50290, Thailand; College of Medical and Health Science, Asia University, Taichung, Taiwan.
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Wu K, Ying K, Zhou J, Liu D, Liu L, Tao Y, Hanotu J, Zhu X, Cai Z. Optimizing the growth of Haematococcus pluvialis based on a novel microbubble-driven photobioreactor. iScience 2021; 24:103461. [PMID: 34988392 PMCID: PMC8710528 DOI: 10.1016/j.isci.2021.103461] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 09/26/2021] [Accepted: 11/11/2021] [Indexed: 12/25/2022] Open
Abstract
Haematococcus pluvialis, the richest bioresource for natural astaxanthin, encounters a challenge of achieving high growth rate when it comes to mass biomass production. Based on the substrate consumption model and Redfield ratio, rapid algae growth benefits from a proper carbon supply. However, the conventional cultivation schemes with limited carbon dioxide (CO2) supply and inefficient carbon mass transfer could have constrained the carbon capture and growing ability of H. pluvialis. We hypothesize that optimal H. pluvialis growth improvement may be achieved by efficient CO2 supply. Here, in this study, we first identified the carbon consumption of H. pluvialis during exponential growth. Then, a novel microbubble-driven photobioreactor (MDPBR) was designed to satisfy the carbon demand. The novel microbubble photobioreactor improves the CO2 supply by reducing bubble size, significantly elevating the CO2 mass transfer. With only 0.05 L min-1 of gas flow rate, higher cell growth rate (0.49 d-1) has been achieved in MDPBR.
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Affiliation(s)
- Kebi Wu
- School of Life Sciences, Tsinghua University, Beijing 100086, China
- Shenzhen Public Platform for Screening and Application of Marine Microbial Resources, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Kezhen Ying
- Shenzhen Public Platform for Screening and Application of Marine Microbial Resources, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
- Oasis Photobio Tech Ltd, Overseas Chinese Scholars Venture Building, South District of High-Tech Industrial Park, Shenzhen, China
| | - Jin Zhou
- Shenzhen Public Platform for Screening and Application of Marine Microbial Resources, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Dai Liu
- Shenzhen Public Platform for Screening and Application of Marine Microbial Resources, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Lu Liu
- School of Life Sciences, Tsinghua University, Beijing 100086, China
- Shenzhen Public Platform for Screening and Application of Marine Microbial Resources, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Yi Tao
- Guangdong Provincial Engineering Research Centre for Urban Water Recycling and Environmental Safety, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - James Hanotu
- Department of Chemical and Biological Engineering, The University of Sheffield, Sheffield S13JD, UK
| | - Xiaoshan Zhu
- Shenzhen Public Platform for Screening and Application of Marine Microbial Resources, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Zhonghua Cai
- School of Life Sciences, Tsinghua University, Beijing 100086, China
- Shenzhen Public Platform for Screening and Application of Marine Microbial Resources, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
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Recent Advances in Carbon Dioxide Conversion: A Circular Bioeconomy Perspective. SUSTAINABILITY 2021. [DOI: 10.3390/su13126962] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Managing the concentration of atmospheric CO2 requires a multifaceted engineering strategy, which remains a highly challenging task. Reducing atmospheric CO2 (CO2R) by converting it to value-added chemicals in a carbon neutral footprint manner must be the ultimate goal. The latest progress in CO2R through either abiotic (artificial catalysts) or biotic (natural enzymes) processes is reviewed herein. Abiotic CO2R can be conducted in the aqueous phase that usually leads to the formation of a mixture of CO, formic acid, and hydrogen. By contrast, a wide spectrum of hydrocarbon species is often observed by abiotic CO2R in the gaseous phase. On the other hand, biotic CO2R is often conducted in the aqueous phase and a wide spectrum of value-added chemicals are obtained. Key to the success of the abiotic process is understanding the surface chemistry of catalysts, which significantly governs the reactivity and selectivity of CO2R. However, in biotic CO2R, operation conditions and reactor design are crucial to reaching a neutral carbon footprint. Future research needs to look toward neutral or even negative carbon footprint CO2R processes. Having a deep insight into the scientific and technological aspect of both abiotic and biotic CO2R would advance in designing efficient catalysts and microalgae farming systems. Integrating the abiotic and biotic CO2R such as microbial fuel cells further diversifies the spectrum of CO2R.
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Li J, Pan K, Tang X, Li Y, Zhu B, Zhao Y. The molecular mechanisms of Chlorella sp. responding to high CO 2: A study based on comparative transcriptome analysis between strains with high- and low-CO 2 tolerance. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 763:144185. [PMID: 33383507 DOI: 10.1016/j.scitotenv.2020.144185] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 11/28/2020] [Accepted: 11/30/2020] [Indexed: 05/28/2023]
Abstract
High CO2 acclimation for microalgae has attracted large research attention owing to the usefulness of microalgae in bio-sequestration of CO2 from the emission source. In this study, one high CO2 tolerant (LAMB 31) and non-tolerant (LAMB 122) Chlorella sp. strains were transferred from air to 40% CO2, during which four time points were chosen for comparative transcriptome analysis. Gene changes started in the lag phase (T1) of population growth with more genes (7889) upregulated in LAMB 31 than in LAMB 122 (1092). Further function enrichments indicated: In LAMB 31, up-regulation of genes in cyclic electron transportation, F-type ATPase and Calvin cycle were associated with the enhancement of carbon fixation abilities; upregulation of genes in phosphorylation together with V-ATPase, which contributed to cytoplasmatic pH stability; Lastly, enhancement of carbon metabolisms including TCA cycle and glycolysis accelerated the consumption of cellular organic carbon. Most of the genes in these pathways and processes showed downregulation in LAMB 122. This study disclosed the most complete transcriptional molecular mechanisms of Chlorella sp. responding to high CO2 by combining CO2 fixation, transportation, and metabolic processes. The results provided valuable genetic information for future screening and breeding of microalgae with high-CO2 tolerance for more efficient CO2 bio-sequestration.
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Affiliation(s)
- Jun Li
- College of Marine Life Sciences, Department of Marine Ecology, Ocean University of China, Qingdao 266003, China
| | - Kehou Pan
- Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266100, China; Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, No. 5 12 Yu Shan Road, Qingdao 266003, China
| | - Xuexi Tang
- 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 266003, China.
| | - Yun Li
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, No. 5 12 Yu Shan Road, Qingdao 266003, China
| | - Baohua Zhu
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, No. 5 12 Yu Shan Road, Qingdao 266003, China
| | - 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 266003, China.
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Characteristics of an immobilized microalgae membrane bioreactor (iMBR): Nutrient removal, microalgae growth, and membrane fouling under continuous operation. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.102072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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13
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Guo G, Guan J, Sun S, Liu J, Zhao Y. Nutrient and heavy metal removal from piggery wastewater and CH 4 enrichment in biogas based on microalgae cultivation technology under different initial inoculum concentration. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2020; 92:922-933. [PMID: 31837273 DOI: 10.1002/wer.1287] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 11/21/2019] [Accepted: 12/10/2019] [Indexed: 06/10/2023]
Abstract
Three microalgae-based treatment technologies were applied for removing nutrients in piggery wastewater and CO2 in biogas simultaneously. Chlorella vulgaris (C. vulgaris), Scenedesmus obliquus (S. obliquus), and Neochloris oleoabundans (N. oleoabundans) were selected for mono-cultivation or co-cultivation with fungi or activated sludge. The effects of initial inoculum concentration (low of 62.06 ± 6.23 mg/L, medium of 121 ± 9.34 mg/L, and high of 180 ± 12.78 mg/L) of microalgae/algal symbiont on the pollutant removal efficiency were evaluated. The results showed that cultivation of S. obliquus with activated sludge had a relatively high CO2 and nutrients removal efficiency at a medium concentration of initial inoculum. The highest removal efficiency of total organic carbon, total nitrogen, and total phosphorus in piggery wastewater was 87.29%, 87.26%, and 90.17% by co-cultivation of S. obliquus with activated sludge. The highest CO2 removal of 64.28% could be achieved under co-cultivation of S. obliquus and fungi at medium initial inoculum concentrations. This work will be helpful to promote the study of microalgae-based biogas upgrading and piggery wastewater purification. PRACTITIONER POINTS: Nutrient and CO2 were efficiently removed in moderate microalgal initial inoculum. Scenedesmus obliquus-activated sludge cultivation achieved the highest nutrient removal. Co-cultivation of S. obliquus and fungi showed the highest CO2 removal. Zinc was removed efficiently in high microalgal initial inoculum. Chlorella vulgaris/S. obliquus-activated sludge performed economically.
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Affiliation(s)
- Guangyong Guo
- School of Environmental and Geographical Sciences, Shanghai Normal University, Shanghai, China
| | - Jian Guan
- Jiaxing Center for Disease Control and Prevention, Jiaxing, China
| | - Shiqing Sun
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, China
| | - Juan Liu
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, China
| | - Yongjun Zhao
- College of Biological, Chemical Science and Engineering, Jiaxing University, Jiaxing, China
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Li J, Tang X, Pan K, Zhu B, Li Y, Ma X, Zhao Y. The regulating mechanisms of CO 2 fixation and carbon allocations of two Chlorella sp. strains in response to high CO 2 levels. CHEMOSPHERE 2020; 247:125814. [PMID: 31927186 DOI: 10.1016/j.chemosphere.2020.125814] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 12/04/2019] [Accepted: 12/31/2019] [Indexed: 06/10/2023]
Abstract
The extreme high CO2 in industrial exhaust gas cannot be tolerated by microalgae is the key challenge for the application of microalgae in CO2 bio-sequestration. To provide better insights for this challenge, we chose one high CO2 tolerant (Chlorella sp. LAMB 31) and non-tolerant (Chlorella sp. LAMB 122) Chlorella sp. to examine their different CO2 fixation and carbon allocation responses to 40% CO2. The results indicated LAMB 31 had a 24-h "lag phase" of biomass increase, during which the transition from PSII-PSI and the increase of lipid synthesis happened to acclimate high CO2 conditions, followed by the increase of pigments synthesis, carbon fixation rates and polysaccharide productions. However, no acclimating mechanism was observed in LAMB 122, whose biomass, photosynthesis and material synthesis were all gradually collapsed under 40% CO2. Finally, four parameters including Chl a, polysaccharides, carbon fixation rates and MDA were selected to be good physiological biomarkers for high CO2 tolerant strains screenings in the future.
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Affiliation(s)
- Jun Li
- College of Marine Life Sciences, Department of Marine Ecology, Ocean University of China, Qingdao, 266003, China
| | - Xuexi Tang
- 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
| | - Kehou Pan
- Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266100, China; Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, No. 5 12 Yu Shan Road, Qingdao, 266003, PR China
| | - Baohua Zhu
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, No. 5 12 Yu Shan Road, Qingdao, 266003, PR China
| | - Yun Li
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, No. 5 12 Yu Shan Road, Qingdao, 266003, PR China
| | - Xuebin Ma
- Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, No. 5 12 Yu Shan Road, Qingdao, 266003, PR China
| | - Yan Zhao
- College of Marine Life Sciences, Department of Marine Ecology, Ocean University of China, Qingdao, 266003, China.
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15
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Anto S, Mukherjee SS, Muthappa R, Mathimani T, Deviram G, Kumar SS, Verma TN, Pugazhendhi A. Algae as green energy reserve: Technological outlook on biofuel production. CHEMOSPHERE 2020; 242:125079. [PMID: 31678847 DOI: 10.1016/j.chemosphere.2019.125079] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 08/12/2019] [Accepted: 10/05/2019] [Indexed: 05/14/2023]
Abstract
Depletion of fossil fuel sources and their emissions have triggered a vigorous research in finding alternative and renewable energy sources. In this regard, algae are being exploited as a third generation feedstock for the production of biofuels such as bioethanol, biodiesel, biogas, and biohydrogen. However, algal based biofuel does not reach successful peak due to the higher cost issues in cultivation, harvesting and extraction steps. Therefore, this review presents an extensive detail of deriving biofuels from algal biomass starting from various algae cultivation systems like raceway pond and photobioreactors and its bottlenecks. Evolution of biofuel feedstocks from edible oils to algae have been addressed in the initial section of the manuscript to provide insights on the different generation of biofuel. Different configuration of photobioreactor systems used to reduce contamination risk and improve biomass productivity were extensively discussed. Photobioreactor performance greatly relies on the conditions under which it is operated. Hence, the importance of such conditions alike temperature, light intensity, inoculum size, CO2, nutrient concentration, and mixing in bioreactor performance have been described. As the lipid is the main component in biodiesel production, several pretreatment methods such as physical, chemical and biological for disrupting cell membrane to extract lipid were comprehensively reviewed and presented. This review article had put forth the recent advancement in the pretreatment methods like hydrothermal processing of algal biomasses using acid or alkali. Eventually, challenges and future dimensions in algal cultivation and pretreatment process were discussed in detail for making an economically viable algal biofuel.
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Affiliation(s)
- Susaimanickam Anto
- Department of Energy and Environment, National Institute of Technology, Tiruchirappalli - 620015, Tamil Nadu, India
| | - Subhra Sankha Mukherjee
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli - 620 015, Tamil Nadu, India
| | - Rhea Muthappa
- Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli - 620 015, Tamil Nadu, India
| | - Thangavel Mathimani
- Department of Energy and Environment, National Institute of Technology, Tiruchirappalli - 620015, Tamil Nadu, India
| | - Garlapati Deviram
- National Centre for Coastal Research, Ministry of Earth Science (MoES), Chennai - 600 100, Tamil Nadu, India
| | - Smita S Kumar
- Centre for Rural Development and Technology, Indian Institute of Technology Delhi, Hauz Khas - 110016, New Delhi, India
| | - Tikendra Nath Verma
- Department of Mechanical Engineering, National Institute of Technology Manipur, India
| | - Arivalagan Pugazhendhi
- Innovative Green Product Synthesis and Renewable Environment Development Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Viet Nam.
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16
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Temperature dependent morphological changes on algal growth and cell surface with dairy industry wastewater: an experimental investigation. 3 Biotech 2020; 10:24. [PMID: 31903319 DOI: 10.1007/s13205-019-2008-x] [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: 05/03/2019] [Accepted: 12/02/2019] [Indexed: 12/11/2022] Open
Abstract
In the present study, influence of temperature and dairy industry waste water (DIWW) concentration on the growth of Chlorella pyrenoidosa has been done along with the thermodynamic analysis of different functions viz. change in enthalpy (∆H), change in entropy (∆S), free energy change (∆G), and activation energy (E a) to study the impact on cell size distribution and morphological changes. Among the studied temperatures, higher biomass productivity was observed at 35 °C at 75% of DIWW. Thermodynamic analysis showed the spontaneous and exothermic nature of growth of C. pyrenoidosa. Experimental data have significantly proven the kinetic and thermodynamics functions with 35 °C temperature, ∆H (- 46.78 kJ mol-1), ∆S (- 0.10 kJ mol-1), ∆G (- 14.8 kJ mol-1), and E a (49.28 kJ mol-1). At this temperature, size distribution showed maximum percentage (48%) cells were of 6540 nm, whereas the minimum percentage (3%) cells were of 2750 nm. SEM-EDX study revealed that increase in temperature leads to increase in roughness and elemental deposition of metal on cell surface.
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Okazaki H, Takabe Y, Masuda T, Hoshikawa Y. Biochemical response of indigenous microalgal consortia to variations in nitrogen concentration of treated effluent. BIORESOURCE TECHNOLOGY 2019; 280:118-126. [PMID: 30763864 DOI: 10.1016/j.biortech.2019.02.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 01/31/2019] [Accepted: 02/04/2019] [Indexed: 06/09/2023]
Abstract
Cultivation conditions influence microalgal cellular components, such as lipid accumulation under nutrient depletion, high light irradiation and salinity stress. In this study, indigenous microalgal consortia were cultivated in batch mode using an actual treated effluent. The temporal response of cellular components to the variations in nitrogen concentration and influence of light irradiation on the response were investigated. Prolonged exposure of indigenous microalgal consortia to nitrogen exhaustion had minor effects on total lipid accumulation and enhancement of energy content. Nitrogen replenishment was followed by immediate crude protein accumulation for growth recovery. Total lipid reduction was observed under light and dark conditions after nitrogen replenishment. A one-day lag after nitrogen replenishment in the total lipid reduction was revealed under nitrogen depletion; meanwhile, under nitrogen exhaustion, lipids were utilised as the primary carbon and/or energy source after replenishment, as represented by the decrease from 10.8% to 9.04% within 6 h after the replenishment.
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Affiliation(s)
- Hironori Okazaki
- Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori 6808552, Japan
| | - Yugo Takabe
- Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori 6808552, Japan.
| | - Takanori Masuda
- Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori 6808552, Japan
| | - Yoshiko Hoshikawa
- Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori 6808552, Japan
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Cao L, Zhou T, Li Z, Wang J, Tang J, Ruan R, Liu Y. Effect of combining adsorption-stripping treatment with acidification on the growth of Chlorella vulgaris and nutrient removal from swine wastewater. BIORESOURCE TECHNOLOGY 2018; 263:10-16. [PMID: 29723844 DOI: 10.1016/j.biortech.2018.04.094] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Revised: 04/21/2018] [Accepted: 04/23/2018] [Indexed: 05/13/2023]
Abstract
After swine wastewater (SW) was treated with adsorption-stripping stage, the concentration of NH4+-N and Total phosphorus (TP) in SW significantly decreased from 598.04, 42.95 to 338.02, 8.36 mg L-1, respectively. The concentration of heavy metals, especially Zn2+ (96.78%), decreased by the ion exchange of artificial zeolite (AZ). The acidification of SW could significantly improve the nutrient utilization efficiency and promote the growth rate of C. vulgaris due to the hydrolysis of macromolecular substances into smaller molecules usable for algae. By combining adsorption (Part I), stripping (Part II) and cultivation (Part III), the highest removal rates of NH4+-N, TP, chemical oxygen demand (COD) and total organic carbon (TOC) from SW were 80.50, 96.90, 72.91, and 84.17%, respectively, and the OD680 value was 1.129 (1.48 times of control) at pH 6.0. The combined system (Part I-III) can significantly enhance the removal efficiency of nutrient and biomass production by acidification.
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Affiliation(s)
- Leipeng Cao
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Ting Zhou
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Zihan Li
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Jingjing Wang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Juan Tang
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China
| | - Roger Ruan
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China; Center for Biorefining and Dept. of Bioproducts and Biosystems Engineering, University of Minnesota, Paul 55108, USA
| | - Yuhuan Liu
- State Key Laboratory of Food Science and Technology, Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China.
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