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Mahata C, Mishra S, Dhar S, Ray S, Mohanty K, Das D. Utilization of dark fermentation effluent for algal cultivation in a modified airlift photobioreactor for biomass and biocrude production. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 330:117121. [PMID: 36586369 DOI: 10.1016/j.jenvman.2022.117121] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/18/2022] [Accepted: 12/21/2022] [Indexed: 06/17/2023]
Abstract
Developing an efficient photobioreactor (PBR) and reducing freshwater dependence are among the significant challenges for generating 3rd generation biomass feedstock. Addressing these, the present study focused on developing a modified airlift (MoAL) PBR. Its performance was further evaluated and compared with the traditional airlift PBR by cultivating microalgae in dark fermentation spent wash. Lower mixing time and higher interfacial mass transfer coefficient was observed in the MoAL PBR having a perforated draft tube. Experimentally, the MoAL exhibited the maximum biomass concentration of 3.18 g L-1, which was 30% higher than that of the conventional airlift PBR. The semi-continuous operation of the MoAL (with water recycling) achieved the maximum biomass productivity of 0.83 g L-1 d-1, two folds superior to that of batch culture. The comprehensive biomass characterization (proximate, ultimate, and thermochemical) further confirmed its potential for bioenergy application. Considering that, hydrothermal liquefaction of the biomass resulted in a maximum biocrude yield of 31% w/w with a higher heating value (HHV) of 36.6 MJ kg-1. In addition, the biocrude comprised 66.6% w/w lighter fraction (<343 °C), including 21.5% w/w of heavy naphtha, 20.5% w/w of kerosene, and 24.6% w/w of diesel. The results can help develop sustainable technology for simultaneous wastewater remediation and biocrude production.
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Affiliation(s)
- Chandan Mahata
- Advanced Technology Development Centre, Indian Institute of Technology, Kharagpur, 721302, India
| | - Sanjeev Mishra
- Sardar Swaran Singh National Institute of Bio-Energy, Kapurthala, 144603, India; School of Energy Science and Engineering, Indian Institute of Technology, Guwahati, 781039, India
| | - Suman Dhar
- Department of Biotechnology, Indian Institute of Technology, Kharagpur, 721302, India
| | - Subhabrata Ray
- Department of Chemical Engineering, Indian Institute of Technology, Kharagpur, 721302, India
| | - Kaustubha Mohanty
- School of Energy Science and Engineering, Indian Institute of Technology, Guwahati, 781039, India; Department of Chemical Engineering, Indian Institute of Technology, Guwahati, 781039, India.
| | - Debabrata Das
- Department of Biotechnology, Indian Institute of Technology, Kharagpur, 721302, India.
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2
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Kora E, Patrinou V, Antonopoulou G, Ntaikou I, Terkelekopoulou AG, Lyberatos G. Dark fermentation of expired fruit juices for biohydrogen production followed by treatment and biotechnological exploitation of effluents towards bioplastics and microbial lipids. Biochem Eng J 2023. [DOI: 10.1016/j.bej.2023.108901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023]
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3
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The synergistic effect of EDTA-Fe and 1-naphthaleneacetic acid on the growth and carbohydrate content of Scenedesmus obliquus. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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4
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Cultivation of Microalgae in Unsterile Malting Effluent for Biomass Production and Lipid Productivity Improvement. FERMENTATION 2022. [DOI: 10.3390/fermentation8040186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Microalgae have the potential to grow in nutrient-rich environments and have the ability to accumulate nutrients from wastewater. The nutrients in malting wastewater are ideal for microalgae cultivation. However, there is limited published work on the growth characteristics of freshwater microalgae grown in malting effluent. This study examined the potential of diluted malting effluent for the growth of freshwater green algae Chlorella sp. and Chlamydomonas sp. isolated from northern Ontario and subsequent biomass and lipid production. Under the 18:6 h light/dark cultivation cycle, the highest cell number counted (540 × 104 cell·mL−1 on day 20) and total chlorophyll content were found in 50% diluted malting effluents for Chlorella sp., whereas the 70% dilution concentration was the most productive for Chlamydomonas (386 × 104 cell·mL−1 on day 16). The total lipid content was higher in the 50% dilution concentration of malting effluent in both Chlorella sp. (maximum 20.5%–minimum 11.5% of dry weight) and Chlamydomonas sp. (max 39.3%–min 25.9% of dry weight). These results emphasize the suitability of using unsterile diluted malting effluent for microalgae cultivation.
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Sitthikitpanya N, Sittijunda S, Khamtib S, Reungsang A. Co-generation of biohydrogen and biochemicals from co-digestion of Chlorella sp. biomass hydrolysate with sugarcane leaf hydrolysate in an integrated circular biorefinery concept. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:197. [PMID: 34598721 PMCID: PMC8487135 DOI: 10.1186/s13068-021-02041-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND A platform for the utilization of the Chlorella sp. biomass and sugarcane leaves to produce multiple products (biorefinery concept) including hydrogen, methane, polyhydroxyalkanoates (PHAs), lipid, and soil supplement with the goal to achieve the zero waste generation (circular economy) is demonstrated in this study. Microalgal biomass were hydrolyzed by mixed enzymes while sugarcane leaves were pretreated with alkali followed by enzyme. Hydrolysates were used to produce hydrogen and the hydrogenic effluent was used to produce multi-products. Solid residues at the end of hydrogen fermentation and the remaining acidified slurries from methane production were evaluated for the compost properties. RESULTS The maximum hydrogen yield of 207.65 mL-H2/g-volatile solid (VS)added was obtained from 0.92, 15.27, and 3.82 g-VS/L of Chlorella sp. biomass hydrolysate, sugarcane leaf hydrolysate, and anaerobic sludge, respectively. Hydrogenic effluent produced 321.1 mL/g-VS of methane yield, 2.01 g/L PHAs concentration, and 0.20 g/L of lipid concentration. Solid residues and the acidified slurries at the end of the hydrogen and methane production process were proved to have compost properties. CONCLUSION Hydrogen production followed by methane, PHA and lipid productions is a successful integrated circular biorefinery platform to efficiently utilize the hydrolysates of Chlorella sp. biomass and sugarcane leaf. The potential use of the solid residues at the end of hydrogen fermentation and the remaining acidified slurries from methane production as soil supplements demonstrates the zero waste concept. The approach revealed in this study provides a foundation for the optimal use of feedstock, resulting in zero waste.
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Affiliation(s)
- Napapat Sitthikitpanya
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, Thailand
| | - Sureewan Sittijunda
- Faculty of Environment and Resource Studies, Mahidol Univesity, Nakhon Pathom, Thailand
| | - Sontaya Khamtib
- Soil Science Research Group, Agricultural Production Science Research and Development Division, Department of Agriculture, Bangkok, Thailand
| | - Alissara Reungsang
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen, Thailand.
- Research Group for Development of Microbial Hydrogen Production Process from Biomass, Khon Kaen University, Khon Kaen, Thailand.
- Academy of Science, Royal Society of Thailand, Bangkok, Thailand.
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6
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Patel A, Sarkar O, Rova U, Christakopoulos P, Matsakas L. Valorization of volatile fatty acids derived from low-cost organic waste for lipogenesis in oleaginous microorganisms-A review. BIORESOURCE TECHNOLOGY 2021; 321:124457. [PMID: 33316701 DOI: 10.1016/j.biortech.2020.124457] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/21/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
To meet environmental sustainability goals, microbial oils have been suggested as an alternative to petroleum-based products. At present, microbial fermentation for oil production relies on pure sugar-based feedstocks. However, these feedstocks are expensive and are in limited supply. Volatile fatty acids, which are generated as intermediates during anaerobic digestion of organic waste have emerged as a renewable feedstock that has the potential to replace conventional sugar sources for microbial oil production. They comprise short-chain (C2 to C6) organic acids and are employed as building blocks in the chemical industry. The present review discusses the use of oleaginous microorganisms for the production of biofuels and added-value products starting from volatile fatty acids as feedstocks. The review describes the metabolic pathways enabling lipogenesis from volatile fatty acids, and focuses on strategies to enhance lipid accumulation in oleaginous microorganisms by tuning the ratios of volatile fatty acids generated via anaerobic fermentation.
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Affiliation(s)
- Alok Patel
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden
| | - Omprakash Sarkar
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden
| | - Ulrika Rova
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden
| | - Paul Christakopoulos
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden
| | - Leonidas Matsakas
- Biochemical Process Engineering, Division of Chemical Engineering, Department of Civil, Environmental and Natural Resources Engineering, Luleå University of Technology, SE-971 87 Luleå, Sweden.
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7
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Lipid Induction in Scenedesmus abundans GH-D11 by Reusing the Volatile Fatty Acids in the Effluent of Dark Anaerobic Fermentation of Biohydrogen. Appl Biochem Biotechnol 2020; 191:258-272. [DOI: 10.1007/s12010-020-03294-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/12/2020] [Indexed: 12/21/2022]
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8
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Gong G, Zhang X, Tan T. Simultaneously enhanced intracellular lipogenesis and β-carotene biosynthesis of Rhodotorula glutinis by light exposure with sodium acetate as the substrate. BIORESOURCE TECHNOLOGY 2020; 295:122274. [PMID: 31670113 DOI: 10.1016/j.biortech.2019.122274] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 10/14/2019] [Accepted: 10/15/2019] [Indexed: 06/10/2023]
Abstract
In this study, light exposure was applied to simultaneously enhance lipogenesis and β-carotene biosynthesis of Rhodotorula glutinis with sodium acetate as the sole carbon source. The results showed that cell growth, intracellular lipogenesis and carotene biosynthesis were improved with an optimal exposure condition at 10 g/L and 20 g/L sodium acetate. Under high light exposure condition (8000 lx), cell growth and lipid production were inhibited while β-carotene accumulation was promoted. The fatty acid compositions moreover revealed that more polyunsaturated fatty acids and linoleic acid were generated under light exposure, which demonstrated its crucial role in the oxidative stress resistance in R. glutinis. The expression levels of some genes in acetate consumption, lipogenesis and β-carotene biosynthesis were found significantly upregulated under light exposure. The results proved that light exposure could be applied as an effective method to improve lipid and β-carotene production with sodium acetate as the substrate in R. glutinis.
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Affiliation(s)
- Guiping Gong
- Beijing Key Lab of Bioprocess, National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China
| | - Xu Zhang
- Beijing Key Lab of Bioprocess, National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China.
| | - Tianwei Tan
- Beijing Key Lab of Bioprocess, National Energy R&D Center for Biorefinery, College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, PR China
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9
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Mishra S, Roy M, Mohanty K. Microalgal bioenergy production under zero-waste biorefinery approach: Recent advances and future perspectives. BIORESOURCE TECHNOLOGY 2019; 292:122008. [PMID: 31466819 DOI: 10.1016/j.biortech.2019.122008] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 08/09/2019] [Accepted: 08/12/2019] [Indexed: 05/08/2023]
Abstract
In view of the globalization and energy consumption, an economic and sustainable biorefinery model is essential to address the energy security and climate change. From this perspective, renewable biofuel production from microalgae along with a wide range of value-added co-products define its potential as a biorefinery feedstock. However, economic viability of microalgal biorefinery at its current state is not considered sustainable. Reduce, recycle, and reuse of waste derived from algal bioenergy conversion process will lead to an energy efficient and sustainable zero-waste microalgal biorefinery. This review focuses on three major aspects of zero-waste microalgal biorefinery approach; (1) recent advances on microalgal bioenergy conversion processes (chemical, biochemical and thermochemical); (2) mitigation and transformation of liquid and solid waste and (3) techno-economic analysis (TEA) and lifecycle assessment (LCA). In addition, the study also focuses on the challenges and future perspectives for an advanced microalgal biorefinery model.
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Affiliation(s)
- Sanjeev Mishra
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Madonna Roy
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Kaustubha Mohanty
- Centre for Energy, Indian Institute of Technology Guwahati, Guwahati 781039, India; Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, India.
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10
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Nagarajan D, Lee DJ, Chang JS. Integration of anaerobic digestion and microalgal cultivation for digestate bioremediation and biogas upgrading. BIORESOURCE TECHNOLOGY 2019; 290:121804. [PMID: 31327690 DOI: 10.1016/j.biortech.2019.121804] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 07/10/2019] [Accepted: 07/11/2019] [Indexed: 06/10/2023]
Abstract
Biogas is the gaseous byproduct obtained during anaerobic digestion which is rich in methane, along with a significant amount of other gases like CO2. The removal of CO2 is essential to upgrade the biogas to biomethane (>95% methane content). High CO2 tolerant microalgae can be employed as a biological CO2 scrubbing agent for biogas upgrading. Many microalgal strains tolerant to the levels of CO2 and CH4 seen in biogas have been reported. A CO2 removal efficiency of 50-99% can be attained based on the microalgae used and the cultivation conditions applied. Nutrient-rich liquid digestate obtained from anaerobic digestion can also be used as the cultivation medium for microalgae, performing biogas upgrading and digestate bioremediation simultaneously. Mixotrophic cultivation enables microalgae to utilize the organic carbon present in the liquid digestate along with nitrogen and phosphorus. Microalgae appears to be a potential biological CO2 scrubbing agent for efficient biogas upgrading.
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Affiliation(s)
- Dillirani Nagarajan
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Jo-Shu Chang
- Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Research Center for Energy Technology and Strategy, National Cheng Kung University, Tainan 701, Taiwan; Research Center for Circular Economy, National Cheng Kung University, Tainan 701, Taiwan; Department of Chemical Engineering and Materials Science, College of Engineering, Tunghai University, Taichung, Taiwan.
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11
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Ayman Oz N, Cagla Uzun Eker A. Simultaneous hydrogen production and pollutant removal from olive mill wastewaters using electrohydrolysis process. CHEMOSPHERE 2019; 232:296-303. [PMID: 31154191 DOI: 10.1016/j.chemosphere.2019.05.125] [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: 12/16/2018] [Revised: 05/03/2019] [Accepted: 05/13/2019] [Indexed: 06/09/2023]
Abstract
Management of olive mill wastewaters is one of the most challenging environmental issue in Mediterranean countries due to its high organic load, color, presence of phenolic compounds and need for high energy cost. Performance of electrohydrolysis (EH) process in terms of removal of organic compounds, detoxification and discoloration of olive mill wastewater (OMW) with simultaneous energy production in the hydrogen gas form has been investigated using aluminum electrodes. Different reaction times and electric potential gradients have been tested in order to determine the most effective conditions for removal of pollutants. The optimum reaction time and current were determined as 8 h and 8 V, respectively. Under these conditions, removal efficiencies for tCOD, suspended solids, color and phenol were obtained as 73%, 84%, 91% and 75%, respectively. At the end of the operating period of 8 h, 1037 ml hydrogen gas was obtained. The results show that electrohydrolysis process can be used as an alternative solution for the management of OMW and the process can be upgraded with a better reactor design or combined with different treatment processes to achieve a better effluent quality to meet discharge standards.
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Affiliation(s)
- Nilgun Ayman Oz
- Canakkale Onsekiz Mart University, Department of Environmental Engineering, Canakkale, 17100, Turkey.
| | - Alev Cagla Uzun Eker
- Canakkale Onsekiz Mart University, Department of Environmental Engineering, Canakkale, 17100, Turkey
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12
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Bakonyi P, Kumar G, Bélafi-Bakó K, Kim SH, Koter S, Kujawski W, Nemestóthy N, Peter J, Pientka Z. A review of the innovative gas separation membrane bioreactor with mechanisms for integrated production and purification of biohydrogen. BIORESOURCE TECHNOLOGY 2018; 270:643-655. [PMID: 30213541 DOI: 10.1016/j.biortech.2018.09.020] [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: 06/30/2018] [Revised: 09/02/2018] [Accepted: 09/03/2018] [Indexed: 06/08/2023]
Abstract
This review article focuses on an assessment of the innovative Gas Separation Membrane Bioreactor (GS-MBR), which is an emerging technology because of its potential for in-situ biohydrogen production and separation. The GS-MBR, as a special membrane bioreactor, enriches CO2 directly from the headspace of the anaerobic H2 fermentation process. CO2 can be fed as a substrate to auxiliary photo-bioreactors to grow microalgae as a promising raw material for biocatalyzed, dark fermentative H2-evolution. Overall, these features make the GS-MBR worthy of study. To the best of the authors' knowledge, the GS-MBR has not been studied in detail to date; hence, a comprehensive review of this topic will be useful to the scientific community.
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Affiliation(s)
- Péter Bakonyi
- Research Institute of Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem u. 10, 8200 Veszprém, Hungary
| | - Gopalakrishnan Kumar
- Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Box 8600 Forus, 4036 Stavanger, Norway; School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Katalin Bélafi-Bakó
- Research Institute of Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem u. 10, 8200 Veszprém, Hungary
| | - Sang-Hyoun Kim
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea.
| | - Stanislaw Koter
- Faculty of Chemistry, Department of Physical Chemistry, Nicolaus Copernicus University in Toruń, Gagarin Street 7, 87-100, Toruń, Poland
| | - Wojciech Kujawski
- Faculty of Chemistry, Department of Physical Chemistry, Nicolaus Copernicus University in Toruń, Gagarin Street 7, 87-100, Toruń, Poland
| | - Nándor Nemestóthy
- Research Institute of Bioengineering, Membrane Technology and Energetics, University of Pannonia, Egyetem u. 10, 8200 Veszprém, Hungary
| | - Jakub Peter
- Institute of Macromolecular Chemistry, AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
| | - Zbynek Pientka
- Institute of Macromolecular Chemistry, AS CR, Heyrovsky Sq. 2, 162 06 Prague 6, Czech Republic
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13
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Qi W, Mei S, Yuan Y, Li X, Tang T, Zhao Q, Wu M, Wei W, Sun Y. Enhancing fermentation wastewater treatment by co-culture of microalgae with volatile fatty acid- and alcohol-degrading bacteria. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.01.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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14
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Ma X, Gao M, Gao Z, Wang J, Zhang M, Ma Y, Wang Q. Past, current, and future research on microalga-derived biodiesel: a critical review and bibliometric analysis. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:10596-10610. [PMID: 29502258 DOI: 10.1007/s11356-018-1453-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 01/31/2018] [Indexed: 06/08/2023]
Abstract
Microalga-derived biodiesel plays a crucial role in the sustainable development of biodiesel in recent years. Literature related to microalga-derived biodiesel had an increasing trend with the expanding research outputs. Based on the Science Citation Index Expanded (SCI-Expanded) of the Web of Science, a bibliometric analysis was conducted to characterize the body of knowledge on microalga-derived biodiesel between 1993 and 2016. From the 30 most frequently used author keywords, the following research hotspots are extracted: lipid preparation from different microalga species, microalga-derived lipid and environmental applications, lipid-producing microalgae cultivation, microalgae growth reactor, and microalga harvest and lipid extraction. Other keywords, i.e., microalga mixotrophic cultivation, symbiotic system between microalga and other oleaginous yeast, microalga genetic engineering, and other applications of lipid-producing microalga are future focal points of research. Graphical abstract.
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Affiliation(s)
- Xiaoyu Ma
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Ming Gao
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Zhen Gao
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Juan Wang
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Min Zhang
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yingqun Ma
- Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, 1 Cleantech Loop, Singapore, 637141, Singapore
| | - Qunhui Wang
- Department of Environmental Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
- Beijing Key Laboratory on Resource-Oriented Treatment of Industrial Pollutants, Beijing, China.
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15
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Waste biorefineries — integrating anaerobic digestion and microalgae cultivation for bioenergy production. Curr Opin Biotechnol 2018; 50:101-110. [DOI: 10.1016/j.copbio.2017.11.017] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 11/24/2017] [Accepted: 11/27/2017] [Indexed: 12/18/2022]
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16
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Huo S, Kong M, Zhu F, Zou B, Wang F, Xu L, Zhang C, Huang D. Mixotrophic Chlorella sp. UJ-3 cultivation in the typical anaerobic fermentation effluents. BIORESOURCE TECHNOLOGY 2018; 249:219-225. [PMID: 29045925 DOI: 10.1016/j.biortech.2017.10.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/02/2017] [Accepted: 10/07/2017] [Indexed: 06/07/2023]
Abstract
The growth of mixotrophic Chlorella sp. UJ-3 cultivated in the three typical anaerobic fermentation effluents was investigated in this paper. The results showed that the microalgae grew best under intermediate light intensity for all the types of fermentation effluents. The butyrate type fermentation effluents induced the fastest growth rate for Chlorella sp. UJ-3, with a maximal cell concentration of 3.8×107 cells/mL. Under intermediate light intensity, the volatile fatty acids (VFAs) were almost depleted on the fifth day of the cultivation for all the three types of fermentation systems. The ratios of chlorophyll a/b were all increased for the three systems, indicating enhanced energy-capturing capability of the microalgae for photosynthesis after the VFAs were depleted. The highest lipid content was 25.4%dwt achieved in the butyrate type fermentation, and the fatty acid compositions were found to be considerably different for these three types of fermentation systems.
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Affiliation(s)
- Shuhao Huo
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Miao Kong
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Feifei Zhu
- Institute of Life Sciences, Jiangsu University, Zhenjiang 212013, China
| | - Bin Zou
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Feng Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Ling Xu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Cunsheng Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Daming Huang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China.
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Sivagurunathan P, Kuppam C, Mudhoo A, Saratale GD, Kadier A, Zhen G, Chatellard L, Trably E, Kumar G. A comprehensive review on two-stage integrative schemes for the valorization of dark fermentative effluents. Crit Rev Biotechnol 2017; 38:868-882. [DOI: 10.1080/07388551.2017.1416578] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | - Chandrasekhar Kuppam
- School of Applied Biosciences, Kyungpook National University, Daegu, South Korea
| | - Ackmez Mudhoo
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Mauritius, Reduit, Republic of Mauritius
| | - Ganesh D. Saratale
- Department of Food Science & Biotechnology, Dongguk University- Seoul, Ilsandong-gu, Goyang-si, Gyonggido, Republic of Korea
| | - Abudukeremu Kadier
- Department of Chemical and Process Engineering, Faculty of Engineering & Built Environment, National University of Malaysia (UKM), Selangor, Malaysia
| | - Guangyin Zhen
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University, Shanghai, PR China
| | | | | | - Gopalakrishnan Kumar
- Green Processing, Bioremediation and Alternative Energies Research Group, Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam
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Chiranjeevi P, Venkata Mohan S. Diverse acidogenic effluents as feedstock for microalgae cultivation: Dual phase metabolic transition on biomass growth and lipid synthesis. BIORESOURCE TECHNOLOGY 2017; 242:191-196. [PMID: 28502573 DOI: 10.1016/j.biortech.2017.04.059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 04/14/2017] [Accepted: 04/16/2017] [Indexed: 05/11/2023]
Abstract
In this study, a biorefinery process integrating dark fermentation with microalgae cultivation (dual phase metabolic transition) was demonstrated with real-field wastewater. Acid rich fermented effluents (distillery waste (FDW1); dairy waste (FDW2)) were used as feedstock for microalgae cultivation. Experiments were performed with FDW1 during growth phase (GP) in mixotrophic mode and FDW2 during stress phase (SP) in both mixotrophic and heterotrophic modes. Mixotrophic cultivation with FDW1 documented significantly higher biomass productivity (5.3g/l). Total lipid (TL) percentage was high in mixotrophic (34%) mode and neutral lipid (NL) was high in heterotrophic (13%) mode of cultivation during SP with FDW2. Overall, the microalgae growth is favoured with effluents containing high acetate, and low butyrate concentrations. Mixotrophic cultivation enhanced both biomass growth and lipid production along with simultaneous treatment.
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Affiliation(s)
- P Chiranjeevi
- Bioengineering and Environmental Sciences Lab, EEFF Department, CSIR-Indian Institute of Chemical Technology (CSIR - IICT), Hyderabad 500 007, India
| | - S Venkata Mohan
- Bioengineering and Environmental Sciences Lab, EEFF Department, CSIR-Indian Institute of Chemical Technology (CSIR - IICT), Hyderabad 500 007, India.
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19
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Huang C, Luo MT, Chen XF, Xiong L, Li XM, Chen XD. Recent advances and industrial viewpoint for biological treatment of wastewaters by oleaginous microorganisms. BIORESOURCE TECHNOLOGY 2017; 232:398-407. [PMID: 28258805 DOI: 10.1016/j.biortech.2017.02.055] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 02/13/2017] [Accepted: 02/15/2017] [Indexed: 05/27/2023]
Abstract
Recently, technology of using oleaginous microorganisms for biological treatment of wastewaters has become one hot topic in biochemical and environmental engineering for its advantages such as easy for operation in basic bioreactor, having potential to produce valuable bio-products, efficient wastewaters treatment in short period, etc. To promote its industrialization, this article provides some comprehensive analysis of this technology such as its advances, issues, and outlook especially from industrial viewpoint. In detail, the types of wastewaters can be treated and the kinds of oleaginous microorganisms used for biological treatment are introduced, the potential of industrial application and issues (relatively low COD removal, low lipid yield, cost of operation, and lack of scale up application) of this technology are presented, and some critical outlook mainly on co-culture method, combination with other treatments, process controlling and adjusting are discussed systematically. By this article, some important information to develop this technology can be obtained.
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Affiliation(s)
- Chao Huang
- CAS Key Laboratory of Renewable Energy, Guangzhou 510640, PR China; Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China
| | - Mu-Tan Luo
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Xue-Fang Chen
- CAS Key Laboratory of Renewable Energy, Guangzhou 510640, PR China; Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China
| | - Lian Xiong
- CAS Key Laboratory of Renewable Energy, Guangzhou 510640, PR China; Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China
| | - Xiao-Mei Li
- CAS Key Laboratory of Renewable Energy, Guangzhou 510640, PR China; Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China
| | - Xin-De Chen
- CAS Key Laboratory of Renewable Energy, Guangzhou 510640, PR China; Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, PR China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, PR China.
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20
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Qi W, Chen T, Wang L, Wu M, Zhao Q, Wei W. High-strength fermentable wastewater reclamation through a sequential process of anaerobic fermentation followed by microalgae cultivation. BIORESOURCE TECHNOLOGY 2017; 227:317-323. [PMID: 28040653 DOI: 10.1016/j.biortech.2016.12.062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 12/12/2016] [Accepted: 12/17/2016] [Indexed: 06/06/2023]
Abstract
In this study, the sequential process of anaerobic fermentation followed by microalgae cultivation was evaluated from both nutrient and energy recovery standpoints. The effects of different fermentation type on the biogas generation, broth metabolites' composition, algal growth and nutrients' utilization, and energy conversion efficiencies for the whole processes were discussed. When the fermentation was designed to produce hydrogen-dominating biogas, the total energy conversion efficiency (TECE) of the sequential process was higher than that of the methane fermentation one. With the production of hydrogen in anaerobic fermentation, more organic carbon metabolites were left in the broth to support better algal growth with more efficient incorporation of ammonia nitrogen. By applying the sequential process, the heat value conversion efficiency (HVCE) for the wastewater could reach 41.2%, if methane was avoided in the fermentation biogas. The removal efficiencies of organic metabolites and NH4+-N in the better case were 100% and 98.3%, respectively.
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Affiliation(s)
- Wenqiang Qi
- School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China; CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Taojing Chen
- School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Liang Wang
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
| | - Minghong Wu
- School of Environmental and Chemical Engineering, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Quanyu Zhao
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Wei Wei
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
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21
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Torquato LDM, Pachiega R, Crespi MS, Nespeca MG, de Oliveira JE, Maintinguer SI. Potential of biohydrogen production from effluents of citrus processing industry using anaerobic bacteria from sewage sludge. WASTE MANAGEMENT (NEW YORK, N.Y.) 2017; 59:181-193. [PMID: 27825704 DOI: 10.1016/j.wasman.2016.10.047] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 10/11/2016] [Accepted: 10/28/2016] [Indexed: 06/06/2023]
Abstract
Citrus crops are among the most abundant crops in the world, which processing is mainly based on juice extraction, generating large amounts of effluents with properties that turn them into potential pollution sources if they are improperly discarded. This study evaluated the potential for bioconversion of effluents from citrus-processing industry (wastewater and vinasse) into hydrogen through the dark fermentation process, by applying anaerobic sewage sludge as inoculum. The inoculum was previously heat treated to eliminate H2-consumers microorganisms and improve its activity. Anaerobic batch reactors were operated in triplicate with increasing proportions (50, 80 and 100%) of each effluent as substrate at 37°C, pH 5.5. Citrus effluents had different effects on inoculum growth and H2 yields, demonstrated by profiles of acetic acid, butyric acid, propionic acid and ethanol, the main by-products generated. It was verified that there was an increase in the production of biogas with the additions of either wastewater (7.3, 33.4 and 85.3mmolL-1) or vinasse (8.8, 12.7 and 13.4mmolL-1) in substrate. These effluents demonstrated remarkable energetic reuse perspectives: 24.0MJm-3 and 4.0MJm-3, respectively. Besides promoting the integrated management and mitigation of anaerobic sludge and effluents from citrus industry, the biohydrogen production may be an alternative for the local energy supply, reducing the operational costs in their own facilities, while enabling a better utilization of the biological potential contained in sewage sludges.
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Affiliation(s)
- Lilian D M Torquato
- Department of Analytical Chemistry, Institute of Chemistry of Araraquara, São Paulo State University (UNESP), CP 355, 14801-970 Araraquara, São Paulo, Brazil.
| | - Renan Pachiega
- Center for Monitoring and Research of the Quality of Fuels, Biofuels, Crude Oil and Derivatives (CEMPEQC), Institute of Chemistry of Araraquara, São Paulo State University (UNESP), CP 355, 14801-970 Araraquara, São Paulo, Brazil
| | - Marisa S Crespi
- Department of Analytical Chemistry, Institute of Chemistry of Araraquara, São Paulo State University (UNESP), CP 355, 14801-970 Araraquara, São Paulo, Brazil
| | - Maurílio Gustavo Nespeca
- Center for Monitoring and Research of the Quality of Fuels, Biofuels, Crude Oil and Derivatives (CEMPEQC), Institute of Chemistry of Araraquara, São Paulo State University (UNESP), CP 355, 14801-970 Araraquara, São Paulo, Brazil
| | - José Eduardo de Oliveira
- Center for Monitoring and Research of the Quality of Fuels, Biofuels, Crude Oil and Derivatives (CEMPEQC), Institute of Chemistry of Araraquara, São Paulo State University (UNESP), CP 355, 14801-970 Araraquara, São Paulo, Brazil
| | - Sandra I Maintinguer
- Institute of Research on Bioenergy (IPBEN), São Paulo State University (UNESP), 13500-230 Rio Claro, São Paulo, Brazil.
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22
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Turon V, Trably E, Fouilland E, Steyer JP. Potentialities of dark fermentation effluents as substrates for microalgae growth: A review. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.03.018] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Boboescu IZ, Gherman VD, Lakatos G, Pap B, Bíró T, Maróti G. Surpassing the current limitations of biohydrogen production systems: The case for a novel hybrid approach. BIORESOURCE TECHNOLOGY 2016; 204:192-201. [PMID: 26790867 DOI: 10.1016/j.biortech.2015.12.083] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 12/22/2015] [Accepted: 12/28/2015] [Indexed: 06/05/2023]
Abstract
The steadily increase of global energy requirements has brought about a general agreement on the need for novel renewable and environmentally friendly energy sources and carriers. Among the alternatives to a fossil fuel-based economy, hydrogen gas is considered a game-changer. Certain methods of hydrogen production can utilize various low-priced industrial and agricultural wastes as substrate, thus coupling organic waste treatment with renewable energy generation. Among these approaches, different biological strategies have been investigated and successfully implemented in laboratory-scale systems. Although promising, several key aspects need further investigation in order to push these technologies towards large-scale industrial implementation. Some of the major scientific and technical bottlenecks will be discussed, along with possible solutions, including a thorough exploration of novel research combining microbial dark fermentation and algal photoheterotrophic degradation systems, integrated with wastewater treatment and metabolic by-products usage.
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Affiliation(s)
- Iulian Zoltan Boboescu
- Polytechnic University of Timisoara, Victoriei Square, nr. 2, 300006 Timisoara, Romania; Hungarian Academy of Sciences, Biological Research Centre Szeged, Temesvari krt. 62, 6726 Szeged, Hungary
| | - Vasile Daniel Gherman
- Polytechnic University of Timisoara, Victoriei Square, nr. 2, 300006 Timisoara, Romania
| | - Gergely Lakatos
- Hungarian Academy of Sciences, Biological Research Centre Szeged, Temesvari krt. 62, 6726 Szeged, Hungary
| | - Bernadett Pap
- Seqomics Biotechnology Ltd., Vállalkozók útja 7, 6782 Mórahalom, Hungary
| | - Tibor Bíró
- Szent István University, Faculty of Economics, Agricultural and Health Studies, Szarvas, Hungary
| | - Gergely Maróti
- Polytechnic University of Timisoara, Victoriei Square, nr. 2, 300006 Timisoara, Romania; Hungarian Academy of Sciences, Biological Research Centre Szeged, Temesvari krt. 62, 6726 Szeged, Hungary.
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24
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Turon V, Trably E, Fouilland E, Steyer JP. Growth of Chlorella sorokiniana on a mixture of volatile fatty acids: The effects of light and temperature. BIORESOURCE TECHNOLOGY 2015; 198:852-860. [PMID: 26461792 DOI: 10.1016/j.biortech.2015.10.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 09/30/2015] [Accepted: 10/01/2015] [Indexed: 06/05/2023]
Abstract
This study investigated the influence of light and temperature on Chlorella sorokiniana grown on a mixture of acetate and butyrate, two of the volatile fatty acids produced by dark fermentation. Exposure to light caused autotrophic biomass production (56% of the final biomass) and reduced the time to reach butyrate exhaustion to 7 days at 25°C from 10 days in the dark. For growth on acetate at the optimum temperature (35°C), the presence of butyrate reduced the growth rate (by 46%) and the carbon yield (by 36%). For successful microalgae growth on dark fermentation effluent, butyrate inhibition may be reduced by setting the temperature to 30°C and providing light.
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Affiliation(s)
- V Turon
- INRA, UR0050 Laboratoire de Biotechnologie de l'Environnement, F-11100 Narbonne, France
| | - E Trably
- INRA, UR0050 Laboratoire de Biotechnologie de l'Environnement, F-11100 Narbonne, France
| | - E Fouilland
- Marine Biodiversity, Exploitation and Conservation - UMR 9190 MARBEC, CNRS, UM, IFREMER, IRD, Station Marine, Université de Montpellier, 2 Rue des Chantiers, 34200 Sète, France.
| | - J-P Steyer
- INRA, UR0050 Laboratoire de Biotechnologie de l'Environnement, F-11100 Narbonne, France
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25
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Ren HY, Liu BF, Kong F, Zhao L, Ren N. Hydrogen and lipid production from starch wastewater by co-culture of anaerobic sludge and oleaginous microalgae with simultaneous COD, nitrogen and phosphorus removal. WATER RESEARCH 2015; 85:404-12. [PMID: 26364224 DOI: 10.1016/j.watres.2015.08.057] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 08/12/2015] [Accepted: 08/30/2015] [Indexed: 05/07/2023]
Abstract
Anaerobic sludge (AS) and microalgae were co-cultured to enhance the energy conversion and nutrients removal from starch wastewater. Mixed ratio, starch concentration and initial pH played critical roles on the hydrogen and lipid production of the co-culture system. The maximum hydrogen production of 1508.3 mL L(-1) and total lipid concentration of 0.36 g L(-1) were obtained under the optimized mixed ratio (algae:AS) of 30:1, starch concentration of 6 g L(-1) and initial pH of 8. The main soluble metabolites in dark fermentation were acetate and butyrate, most of which can be consumed in co-cultivation. When sweet potato starch wastewater was used as the substrate, the highest COD, TN and TP removal and energy conversion efficiencies reached 80.5%, 88.7%, 80.1% and 34.2%, which were 176%, 178%, 200% and 119% higher than that of the control group (dark fermentation), respectively. This research provided a novel approach and achieved efficient simultaneous energy recovery and nutrients removal from starch wastewater by the co-culture system.
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Affiliation(s)
- Hong-Yu Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
| | - Bing-Feng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
| | - Fanying Kong
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
| | - Lei Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Nanqi Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
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26
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Turon V, Trably E, Fayet A, Fouilland E, Steyer JP. Raw dark fermentation effluent to support heterotrophic microalgae growth: microalgae successfully outcompete bacteria for acetate. ALGAL RES 2015. [DOI: 10.1016/j.algal.2015.08.011] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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27
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Ren HY, Liu BF, Kong F, Zhao L, Ren NQ. Sequential generation of hydrogen and lipids from starch by combination of dark fermentation and microalgal cultivation. RSC Adv 2015. [DOI: 10.1039/c5ra15023j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Dark fermentative hydrogen production and microalgal lipid production was successfully combined to enhance the energy conversion from starch with simultaneous treatment of volatile fatty acids in the effluent.
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Affiliation(s)
- Hong-Yu Ren
- State Key Laboratory of Urban Water Resource and Environment
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Bing-Feng Liu
- State Key Laboratory of Urban Water Resource and Environment
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Fanying Kong
- State Key Laboratory of Urban Water Resource and Environment
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Lei Zhao
- State Key Laboratory of Urban Water Resource and Environment
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- China
| | - Nan-Qi Ren
- State Key Laboratory of Urban Water Resource and Environment
- School of Municipal and Environmental Engineering
- Harbin Institute of Technology
- Harbin 150090
- China
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28
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Ren HY, Liu BF, Kong F, Zhao L, Ren NQ. Improved Nile red staining of Scenedesmus sp. by combining ultrasonic treatment and three-dimensional excitation emission matrix fluorescence spectroscopy. ALGAL RES 2015. [DOI: 10.1016/j.algal.2014.11.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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29
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Ling J, Nip S, Cheok WL, de Toledo RA, Shim H. Lipid production by a mixed culture of oleaginous yeast and microalga from distillery and domestic mixed wastewater. BIORESOURCE TECHNOLOGY 2014; 173:132-139. [PMID: 25299489 DOI: 10.1016/j.biortech.2014.09.047] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 09/10/2014] [Accepted: 09/11/2014] [Indexed: 06/04/2023]
Abstract
Lipid productivity by mixed culture of Rhodosporidium toruloides and Chlorella pyrenoidosa was studied using 1:1 mixed real wastewater from distillery and local municipal wastewater treatment plant with initial soluble chemical oxygen demand (SCOD) around 25,000 mg/L, initial cell density of 2×10(7) cells/mL (yeast) and 5×10(6) cells/mL (microalga), at 30 °C and 2.93 W/m2 (2000 lux, 12:12 h light and dark cycles). Lipid content and lipid yield achieved were 63.45±2.58% and 4.60±0.36 g/L with the associated removal efficiencies for SCOD, total nitrogen (TN), and total phosphorus (TP) at 95.34±0.07%, 51.18±2.17%, and 89.29±4.91%, respectively, after 5 days of cultivation without the pH adjustment. Inoculation of microalgae at 40 h of the initial yeast cultivation and harvesting part of inactive biomass at 72 h by sedimentation could improve both lipid production and wastewater treatment efficiency under non-sterile conditions.
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Affiliation(s)
- Jiayin Ling
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macau SAR, China
| | - Saiwa Nip
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macau SAR, China
| | - Wai Leong Cheok
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macau SAR, China
| | - Renata Alves de Toledo
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macau SAR, China
| | - Hojae Shim
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Taipa, Macau SAR, China.
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30
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Tian-Yuan Z, Yin-Hu W, Lin-Lan Z, Xiao-Xiong W, Hong-Ying H. Screening heterotrophic microalgal strains by using the Biolog method for biofuel production from organic wastewater. ALGAL RES 2014. [DOI: 10.1016/j.algal.2014.10.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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31
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Ren HY, Liu BF, Kong F, Zhao L, Xie GJ, Ren NQ. Enhanced lipid accumulation of green microalga Scenedesmus sp. by metal ions and EDTA addition. BIORESOURCE TECHNOLOGY 2014; 169:763-767. [PMID: 25037828 DOI: 10.1016/j.biortech.2014.06.062] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 06/16/2014] [Accepted: 06/18/2014] [Indexed: 05/12/2023]
Abstract
Effects of Fe(3+) (0-0.12 g/L), Mg(2+) (0-0.73 g/L) and Ca(2+) (0-0.98 g/L) on the biomass and lipid accumulation of heterotrophic microalgae were investigated in dark environment. The biomass and lipid production exhibited an increasing trend with increasing the concentrations of metal ions. In cultures with 1.2 × 10(-3) g/L Fe(3+), 7.3 × 10(-3) g/L Mg(2+) and 9.8 × 10(-4) g/L Ca(2+), the maximum biomass, total lipid content and lipid productivity reached 3.49 g/L, 47.4% and 275.7 mg/L/d, respectively. More importantly, EDTA addition (1.0 × 10(-3) g/L) could enhance the solubility of metal ions (iron and calcium) and increase their availability by microalgae, which evidently promote the lipid accumulation. Compared with the control, the total lipid content and lipid productivity increased 28.2% and 29.7%, respectively. These show that appropriate concentrations of metal ions and EDTA in the culture medium were beneficial to lipid accumulation of heterotrophic Scenedesmus sp. cells.
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Affiliation(s)
- Hong-Yu Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Bing-Feng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
| | - Fanying Kong
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Lei Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Guo-Jun Xie
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Nan-Qi Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
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32
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Ren HY, Liu BF, Kong F, Zhao L, Xie GJ, Ren NQ. Energy conversion analysis of microalgal lipid production under different culture modes. BIORESOURCE TECHNOLOGY 2014; 166:625-629. [PMID: 24953728 DOI: 10.1016/j.biortech.2014.05.106] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 05/24/2014] [Accepted: 05/27/2014] [Indexed: 06/03/2023]
Abstract
Growth and lipid production performance of Scenedesmus sp. under different culture modes were investigated. Under heterotrophic aerobic mode, algal biomass concentration and total lipid content reached 3.42 g L(-1) and 43.0 wt.%, which were much higher than those in autotrophic aerobic mode (0.55 g L(-1)/20.2 wt.%). The applied light exposure of 7.0 Wm(-2) was beneficial to biomass and lipid accumulation. Mixotrophic aerobic mode produced the highest biomass concentration of 3.84 g L(-1). The biomass was rich in lipids (51.3 wt.%) and low in proteins (17.9 wt.%) and carbohydrates (10.3 wt.%). However, lower algal biomass concentration (2.93 g L(-1)) and total lipid content (36.1 wt.%) were obtained in mixotrophic anaerobic mode. Mixotrophic aerobic mode gave the maximum heat value conversion efficiency of 45.7%. These results indicate that mixotrophic aerobic cultivation was a promising culture mode for lipid production by Scenedesmus sp.
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Affiliation(s)
- Hong-Yu Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Bing-Feng Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
| | - Fanying Kong
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Lei Zhao
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Guo-Jun Xie
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
| | - Nan-Qi Ren
- State Key Laboratory of Urban Water Resource and Environment, School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China.
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