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Bora A, Thondi Rajan AS, Ponnuchamy K, Muthusamy G, Alagarsamy A. Microalgae to bioenergy production: Recent advances, influencing parameters, utilization of wastewater - A critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 946:174230. [PMID: 38942321 DOI: 10.1016/j.scitotenv.2024.174230] [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: 04/30/2024] [Revised: 06/12/2024] [Accepted: 06/21/2024] [Indexed: 06/30/2024]
Abstract
Fossil fuel limitations and their influence on climate change through atmospheric greenhouse gas emissions have made the excessive use of fossil fuels widely recognized as unsustainable. The high lipid content, carbon-neutral nature and potential as a biofuel source have made microalgae a subject of global study. Microalgae are a promising supply of biomass for third-generation biofuels production since they are renewable. They have the potential to produce significant amounts of biofuel and are considered a sustainable alternative to non-renewable energy sources. Microalgae are currently incapable to synthesize algal biofuel on an extensive basis in a sustainable manner, despite their significance in the global production of biofuels. Wastewater contains nutrients (both organic and inorganic) which is essential for the development of microalgae. Microalgae and wastewater can be combined to remediate waste effectively. Wastewater of various kinds such as industrial, agricultural, domestic, and municipal can be used as a substrate for microalgal growth. This process helps reduce carbon dioxide emissions and makes the production of biofuels more cost-effective. This critical review provides a detailed analysis of the utilization of wastewater as a growth medium for microalgal - biofuel production. The review also highlights potential future strategies to improve the commercial production of biofuels from microalgae.
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Affiliation(s)
- Abhispa Bora
- Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Angelin Swetha Thondi Rajan
- Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Kumar Ponnuchamy
- Department of Animal Health and Management, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Govarthanan Muthusamy
- Department of Environmental Engineering, Kyungpook National University, 41566 Daegu, Republic of Korea
| | - Arun Alagarsamy
- Bioenergy and Bioremediation Laboratory, Department of Microbiology, Alagappa University, Karaikudi 630003, Tamil Nadu, India.
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Purba LDA, Susanti H, Admirasari R, Praharyawan S, Taufikurahman, Iwamoto K. Bibliometric insights into microalgae cultivation in wastewater: Trends and future prospects for biolipid production and environmental sustainability. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 352:120104. [PMID: 38242026 DOI: 10.1016/j.jenvman.2024.120104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 12/01/2023] [Accepted: 01/11/2024] [Indexed: 01/21/2024]
Abstract
Cultivation of microalgae in wastewater stream has been extensively reported, especially for simultaneous production of biolipid and wastewater treatment process. This study aimed to derive the research trend and focus on biolipid production from microalgae cultivated in wastewater by using bibliometric approach. The search strategy used in Scopus database resulted in 1339 research articles from 1990 to November 2023. Majority of publications (46%) were affiliated to China and India, showing their predominance in this field. Keywords related to the center of attention included biodiesel, biofuel, biomass and nutrient removal. Meanwhile, keyword with recent publication year, indicating the emerging research trends, revolved around the cultivation techniques and application of the system. Co-culture involving more than one microalgae species, bacteria and yeast showed promising results, while addition of nanoparticles was also found to be beneficial. Increasing exploration on the application of microalgae for treatment of saline wastewater was also reported and the carbon fixation mechanism by microalgae has been widely investigated to promote less environmental impact. Future research on these topics were suggested based on the findings of the bibliometric analyses.
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Affiliation(s)
- Laila Dina Amalia Purba
- Research Center for Applied Microbiology, National Research and Innovation Agency (BRIN), Cibinong, 16911, West Java, Indonesia.
| | - Hani Susanti
- Research Center for Applied Microbiology, National Research and Innovation Agency (BRIN), Cibinong, 16911, West Java, Indonesia
| | - Rahmania Admirasari
- Research Center for Applied Microbiology, National Research and Innovation Agency (BRIN), Cibinong, 16911, West Java, Indonesia
| | - Swastika Praharyawan
- Research Center for Applied Microbiology, National Research and Innovation Agency (BRIN), Cibinong, 16911, West Java, Indonesia
| | - Taufikurahman
- School of Life Science and Technology, Institut Teknologi Bandung, Jalan Ganesa No. 10, Bandung, 40132, Indonesia
| | - Koji Iwamoto
- Malaysia-Japan International Institute of Technology (MJIIT), Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur, 54100, Malaysia
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Chidichimo F, Basile MR, Conidi C, De Filpo G, Morelli R, Cassano A. A New Approach for Bioremediation of Olive Mill Wastewaters: Combination of Straw Filtration and Nanofiltration. MEMBRANES 2024; 14:38. [PMID: 38392665 PMCID: PMC10890137 DOI: 10.3390/membranes14020038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 02/24/2024]
Abstract
A combination of straw filtration and nanofiltration was investigated for the first time as a sustainable approach aimed at valorizing olive mill wastewaters (OMWs) within a circular economy strategy. Ground straw filters with different granulometry (120, 250 and 500 μm) were tested in the first step to clarify the raw wastewater. The 500 μm filter offered the best performance due to a lower exposed surface of the filtering fibers and a shorter filtering time, allowing us to reduce about 70% of the chemical oxygen demand (COD) of the raw wastewater. Three different commercial membranes in a flat-sheet configuration with a molecular weight cut-off (MWCO) in the range 150-500 Da were tested to fractionate the clarified wastewater according to a dead-end configuration. Among the investigated membranes, a polymeric membrane of 500 Da (NFA-12A) exhibited the highest productivity in selected operating conditions (steady-state values of 11.4 L/m2 h at 20 bar and 24 ± 2 °C). In addition, flux decays for this membrane were lower than the other two tested membranes, indicating a lower propensity to fouling phenomena. Higher rejections towards total polyphenols and total antioxidant activity (TAA) (76.6% and 73.2%, respectively) were also observed for this membrane. Flavanols and hydroxycinnamic acids were retained by more than 99%. The combination of straw filtration and NF with the NFA-12A membrane allowed us to reduce the COD of raw OMWs up to 97.6%. The retentate fraction of this membrane exhibited a TAA of 18.9 ± 0.7 mM Trolox, supporting its propensity for the development of innovative formulations of interest in food and nutraceutical applications.
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Affiliation(s)
- Francesco Chidichimo
- Department of Environmental Engineering (DIAm), University of Calabria, Via P. Bucci 42B, 87036 Rende, Italy
| | - Maria Rita Basile
- TEBAID Consortium, Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci 15D, 87036 Rende, Italy
| | - Carmela Conidi
- Institute on Membrane Technology, ITM-CNR, Via P. Bucci 17C, 87036 Rende, Italy
| | - Giovanni De Filpo
- Department of Chemistry and Chemical Technologies, University of Calabria, Via P. Bucci 15D, 87036 Rende, Italy
| | - Rosanna Morelli
- Institute on Membrane Technology, ITM-CNR, Via P. Bucci 17C, 87036 Rende, Italy
| | - Alfredo Cassano
- Institute on Membrane Technology, ITM-CNR, Via P. Bucci 17C, 87036 Rende, Italy
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Dahmen-Ben Moussa I, Maalej A, Masmoudi MA, Feki F, Choura S, Baccar N, Jelail L, Karray F, Chamkha M, Sayadi S. Effect of olive mill wastewaters on Scenedesmus sp. growth, metabolism and polyphenols removal. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:5508-5519. [PMID: 33682135 DOI: 10.1002/jsfa.11200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 01/24/2021] [Accepted: 03/07/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND The three-phase extraction process of olive oil produces highly contaminated wastewater (OMW). The elimination of this toxic by-product is an important environmental issue that requires the development of an appropriate management solution. The cultivation of microalgae using OMW as growth medium was therefore studied using single (the culture medium was formed by 0% to 80% ultrafiltered olive mill wastewater (OMUF) or OMW added to BG11) and two-stage strategies (microalgae were firstly cultivated in the BG11 medium. In the second stage, 40% and 80% of OMUF and OMW were added to the culture). In this work, biodegradation of OMW and subsequent extraction of lipid and antioxidant molecules was investigated as an ecofriendly method for the bioremediation and valorization of OMW. RESULTS For two-stage cultivation, OMUF and OMW stress enhanced the intracellular amount of polyphenol accumulated in Scenedesmus sp. and exhibited the highest 2, 2-diphenyl-1- picrylhydrazyl radical (DPPH) and 2,2'-azino-bis (3-ethylbenzoline-6-sulfonate) radical (ABTS) scavenging ability compared with single-stage cultivation. Moreover, the lipid profile is dominated by polyunsaturated acids. In the single-stage cultivation, the Ch a, Ch b, carotenoid, carbohydrate and lipid content of 2.57, 7.4, 1.69, 368, and 644 g kg-1 were observed in 40% OMUF added culture, respectively, along with high biomass productivity and 58% of polyphenol removal. Moreover, the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay showed that the biomass of Scenedesmus sp. cultured on 40% OMUF did not show any toxic effect, making it an efficient strategy. CONCLUSION The results indicate that Scenedesmus sp. is a promising microalga for the biotreatment of OMW and the extraction of bioactive metabolites. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Ines Dahmen-Ben Moussa
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Amina Maalej
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Mohamed A Masmoudi
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Firas Feki
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Sirine Choura
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Nidhal Baccar
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Lobna Jelail
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Fatma Karray
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Mohamed Chamkha
- Laboratory of Environmental Bioprocesses, Centre of Biotechnology of Sfax, University of Sfax, Sfax, Tunisia
| | - Sami Sayadi
- Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha, Qatar
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Heterogeneous Photo-Fenton Reaction for Olive Mill Wastewater Treatment—Case of Reusable Catalyst. Catalysts 2021. [DOI: 10.3390/catal11050557] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Heterogeneous catalysts can be an efficient and economical option for olive mill wastewater (OMW) treatment by an advanced oxidation process if they could be reused. In this work, OMW was treated using a heterogeneous photo-Fenton reaction (artificial ultraviolet light/H2O2/HFeO2). For this purpose, different concentrations of HFeO2 were tested: 0.04; 0.3; 0.8; 5.0; 10.0; 20.0; 30.0, and 50.0 g/L. The following operational conditions were chosen: pH = 3.0, temperature = 20 °C, agitation rate = 700 rpm. The experimental results showed high removal percentages of the main OMW characterization parameters at 50 g/L of HFeO2: %CODremoval = 62.8%; %total phenolic compounds (TPCs) = 88.9%. These results were also compared with those of other control oxidation systems, i.e., UV, H2O2, and UV/H2O2, which provided 35.5 and 56.1%; 46.2 and 74.0%; 48.0 and 76.8% removal, respectively. In addition, the catalyst was reused three times, recovering more than 90.5% of it.
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6
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An assessment of heterotrophy and mixotrophy in Scenedesmus and its utilization in wastewater treatment. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101911] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Study of Catalysts’ Influence on Photocatalysis/Photodegradation of Olive Oil Mill Wastewater. Determination of the Optimum Working Conditions. Catalysts 2020. [DOI: 10.3390/catal10050554] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The high production of raw olive oil mill wastewater (OMW) is a current environmental problem due to its high organic load and phenol compounds. In this work, photo-Fenton reaction as an advanced oxidation process has been chosen for OMW treatment. In this sense, different iron salts (FeCl3, Fe2(SO4)3, FeSO4·7H2O, and Fe(ClO4)3) as catalysts were used in order to compare their effects on treatment. For each catalyst, different H2O2 concentrations (2.5, 5.0, 7.5, 10.0, 15.0, 20.0, and 30.0%, w/v) as oxidizing agents were tested. The common experimental conditions were temperature 20 °C, the catalyst/H2O2 ratio = 0.03, pH = 3, and ultraviolet light. The Lagergren kinetic model, in cases of total organic carbon removal, for the best H2O2 concentration per catalyst was used. During the experiments, the water quality was determined by measuring the removal percentages on chemical oxygen demand, total carbon, total organic carbon, total nitrogen, total phenolic compounds, total iron, turbidity and electric conductivity. The best catalyst was FeCl3 and the optimum H2O2 concentration was 7.5% (w/v). At these optimal conditions, the removal percentages for chemical oxygen demand, total phenolic compounds, total carbon, total organic carbon and total nitrogen were 60.3%, 88.4%, 70.1%, 63.2% and 51.5%, respectively.
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Hu X, Meneses YE, Aly Hassan A. Integration of sodium hypochlorite pretreatment with co-immobilized microalgae/bacteria treatment of meat processing wastewater. BIORESOURCE TECHNOLOGY 2020; 304:122953. [PMID: 32087541 DOI: 10.1016/j.biortech.2020.122953] [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: 11/26/2019] [Revised: 01/28/2020] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
Wastewater with 0.2, 0.4, 0.8, 1.0 mg/L free chlorine was biologically treated using co-immobilized microalgae/bacteria. In contrast, non-pretreated wastewater was treated with beads (control) and blank beads (blank) under the same operating condition. Results showed that NaClO pretreatment removed 8-33% total nitrogen (TN), 31-45% true color and 0.7-2.5 log CFU/mL aerobic-bacteria. At the end of treatment, maximum algal biomass (2,027 dry weight mg/L) was achieved with 0.2 mg/L free chlorine. Bacterial growth in wastewater was decreased by NaClO pretreatment before reaching 7.2-7.7 log CFU/mL on the fifth day. Beads with microorganisms (control) removed 15% more chemical-oxygen-demand (COD), 16% more TN, and 13% more total phosphate (PO43-) than blank. Pretreatment with 0.2 mg/L free chlorine increased TN removal from 75% to 80% while pollutants removal was substantially decreased with 0.4-1.0 mg/L free chlorine. Considering algal biomass growth and pollutants removal, 0.2 mg/L free chlorine pretreatment was recommended for microalgae/bacteria co-immobilized system.
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Affiliation(s)
- Xinjuan Hu
- Department of Food Science and Technology, Food Processing Center, University of Nebraska-Lincoln, Lincoln, NE 68588-6205, United States
| | - Yulie E Meneses
- Department of Food Science and Technology, Food Processing Center, University of Nebraska-Lincoln, Lincoln, NE 68588-6205, United States; Daugherty Water for Food Global Institute, Nebraska Innovation Campus, University of Nebraska-Lincoln, Lincoln, NE 68588-6204, United States.
| | - Ashraf Aly Hassan
- Department of Civil and Environmental Engineering and National Water Center, United Arab Emirates University, Al Ain, Abu Dhabi, United Arab Emirates; Department of Civil Engineering, University of Nebraska-Lincoln, Lincoln, NE 68588-0531, United States
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9
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Microalgal Growth in Paper Industry Effluent: Coupling Biomass Production with Nutrients Removal. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10093009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Paper and pulp industries produce effluents with high phosphorus concentrations, which need to be treated before their discharge in watercourses. The use of microalgae for this purpose has attracted the attention of researchers because: (i) microalgae can assimilate phosphorus (one of the main nutrients for their growth); and (ii) growing on effluents can significantly reduce the costs and environmental impact of microalgal biomass production. This study evaluated the growth and ability of Chlorella vulgaris to remove the phosphorus from a secondary-treated effluent of a Portuguese paper company. Batch experiments were performed for 11 days using different dilutions of the effluent to evaluate its inhibitory effect on microalgae. Results showed that the non-diluted effluent inhibited microalgal growth, indicating that this bioremediation process is possible after a previous dilution of the effluent. Regarding phosphorus removal, promising results were achieved, especially in the experiments conducted with the most diluted effluent: removal efficiencies obtained in these conditions were (54 ± 1)%. Another interesting finding of this study was microalgal growth in flakes’ form (mainly due to the compounds present in the effluent and to the pH values achieved), which can be an important economic advantage for biomass recovery after the remediation step.
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Belete YZ, Leu S, Boussiba S, Zorin B, Posten C, Thomsen L, Wang S, Gross A, Bernstein R. Characterization and utilization of hydrothermal carbonization aqueous phase as nutrient source for microalgal growth. BIORESOURCE TECHNOLOGY 2019; 290:121758. [PMID: 31349114 DOI: 10.1016/j.biortech.2019.121758] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/02/2019] [Accepted: 07/03/2019] [Indexed: 05/27/2023]
Abstract
This study investigated the feasibility of using hydrothermal carbonization (HTC) aqueous phase as an alternative nutrient source for microalgae cultivation, and the microalgae cultivation capability to treat this complex medium to a level enabling its reuse or discharge. HTC of activated sludge was optimized in terms of the energy content of the solid hydrochar and the nutrient content of the HTC aqueous phase adequate for microalgal growth. Growth rates of Coelastrella sp. and Chlorella sp. in the HTC aqueous phase based growth medium and a control medium (mBG11) were similar, indicating that the HTC aqueous phase does not inhibit the microalgae growth. Nitrogen and phosphorus concentrations were reduced by >90% and dissolved organic carbon by 80% after 6 days of cultivation, resulting in water quality suitable for reuse or discharge. This study confirms the microalgae high potential in a circular bio-economy to valorize wet bio-waste streams from various treatment methods.
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Affiliation(s)
- Yonas Zeslase Belete
- Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus 84990, Israel
| | - Stefan Leu
- Microalgal Biotechnology Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus 84990, Israel
| | - Sammy Boussiba
- Microalgal Biotechnology Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus 84990, Israel
| | - Boris Zorin
- Microalgal Biotechnology Laboratory, French Associates Institute for Agriculture and Biotechnology of Drylands, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus 84990, Israel
| | - Clemens Posten
- Institute of Process Engineering in Life Sciences, Karlsruhe Institute of Technology (KIT), Fritz Haber Weg 2, 76131 Karlsruhe, Germany
| | - Laurenz Thomsen
- Department of Physics and Earth Sciences, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | - Song Wang
- Department of Physics and Earth Sciences, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
| | - Amit Gross
- Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus 84990, Israel
| | - Roy Bernstein
- Zuckerberg Institute for Water Research, The Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede-Boqer Campus 84990, Israel.
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Trivedi J, Singh J, Atray N, Ray SS, Agrawal D. Development of a non-linear growth model for predicting temporal evolution of Scenedesmus obliquus with varying irradiance. Bioprocess Biosyst Eng 2019; 42:2047-2054. [PMID: 31432253 DOI: 10.1007/s00449-019-02194-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/30/2019] [Accepted: 08/08/2019] [Indexed: 11/30/2022]
Abstract
In the present study, the effect of irradiance on growth performance of Scenedesmus obliquus was investigated, and various non-linear growth models were evaluated to predict its temporal evolution. This microalga was cultured in a LED-illuminated flat-panel gas-lift photobioreactor operated in batch mode at varying irradiance ranging from 50 to 200 µmol/m2/s keeping all the other physico-chemical parameters constant. When growth data in terms of optical density were fitted in sigmoidal growth models, three non-linear models, namely, Richards model, Gompertz model, and logistic model, were found to be the best fit. Comparing these models based on statistical information, the logistic model could more appropriately and precisely describe algal growth under varying light intensity. Finally, the parameters of the logistic model were determined using regression analysis and were incorporated in the logistic equation to investigate the kinetic characteristics of S. obliquus. The optimum light intensity (Iopt) for growth was found to be 150 µmol/m2/s, at which a maximum specific growth rate (µopt) of 0.35/day was obtained. The model developed was validated experimentally and could successfully explain the photo-inhibition phenomenon occurring at light intensity above 150 µmol/m2/s.
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Affiliation(s)
- Jayati Trivedi
- Biofuels Division, CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India.
| | - Jasvinder Singh
- Biofuels Division, CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Neeraj Atray
- Biofuels Division, CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - S S Ray
- Biofuels Division, CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Deepti Agrawal
- Biofuels Division, CSIR-Indian Institute of Petroleum, Mohkampur, Dehradun, 248005, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
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12
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Umamaheswari J, Shanthakumar S. Phycoremediation of paddy-soaked wastewater by indigenous microalgae in open and closed culture system. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 243:435-443. [PMID: 31103689 DOI: 10.1016/j.jenvman.2019.05.023] [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: 03/22/2019] [Revised: 05/01/2019] [Accepted: 05/04/2019] [Indexed: 06/09/2023]
Abstract
Phycoremediation; biotransformation of nutrients and or pollutants by microalgae, supports sustainable wastewater treatment, coupled with biomass production, resulting in enhanced cost savings, waste minimization, and energy conservation. A major challenge in this technique involves cultivation system to be adopted, mode of treatment and harvesting methods. Three different algal cultivation systems; polybags (PB), photobioreactors (PBR) and race way ponds (RWP) were employed for culturing an indigenous microalga, Scenedesmus obliquus in rice mill paddy-soaked wastewater (PSW). The maximum biomass productivity (BP) of 340 ± 2 mg/L/d was observed in PBR with an ammonical nitrogen (NH3-N) removal (RN) of 96.12 ± 0.21% and the phosphates (PO4-P) removal (RP) of 97.58 ± 0.18%. Highest lipids (L)∼12% (% biomass), protein (P)∼40% and carbohydrates (C)∼20%) were gained in PBR culture system, followed by RWP and PB.
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Affiliation(s)
- J Umamaheswari
- Department of Environmental and Water Resources Engineering, School of Civil Engineering, Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India
| | - S Shanthakumar
- Department of Environmental and Water Resources Engineering, School of Civil Engineering, Vellore Institute of Technology (VIT), Vellore, 632014, Tamil Nadu, India.
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13
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Qu Z, Duan P, Cao X, Liu M, Lin L, Li M. Comparison of monoculture and mixed culture (Scenedesmus obliquus and wild algae) for C, N, and P removal and lipid production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:20961-20968. [PMID: 31115809 DOI: 10.1007/s11356-019-05339-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 05/01/2019] [Indexed: 06/09/2023]
Abstract
This study compared the efficiency of nutrient removal and lipid accumulation by a monoculture of Scenedesmus obliquus and mixed cultures of microalgae. The highest removal efficiencies of ammonium (99.2%), phosphate (91.2%), and total organic carbon (83.6%) occurred in the monoculture. All the mixed cultures were dominated by S. quadricauda; in some mixed cultures, the proportions of Chlamydomonas reinhardtii and C. microsphaera reached > 20%. The lipid content and lipid production in the monoculture were 15.9% and 52.3 mg kg-1, respectively, significantly higher than those in all the mixed cultures of microalgae. In all the mixed cultures, the proportion of palmitic acid was > 50%. The results suggest that the monoculture had advantages over the mixed culture of microalgae in terms of nutrient removal and lipid production.
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Affiliation(s)
- Zhi Qu
- State Key Laboratory of Eco-hydraulics in Northwest Arid Region, Xi'an University of Technology, No. 5 Jinhuananlu, Xi'an, 710048, People's Republic of China
| | - Pengfei Duan
- Collaborative Innovation Center of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province, Nanyang Normal University, Nanyang, 473061, People's Republic of China
| | - Xubing Cao
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, People's Republic of China
| | - Manli Liu
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, People's Republic of China
| | - Li Lin
- Department of Water Environment Research, Changjiang River Scientific Research Institute, Wuhan, 430010, People's Republic of China
| | - Ming Li
- Collaborative Innovation Center of Water Security for Water Source Region of Mid-line of South-to-North Diversion Project of Henan Province, Nanyang Normal University, Nanyang, 473061, People's Republic of China.
- College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, People's Republic of China.
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Malvis A, Hodaifa G, Halioui M, Seyedsalehi M, Sánchez S. Integrated process for olive oil mill wastewater treatment and its revalorization through the generation of high added value algal biomass. WATER RESEARCH 2019; 151:332-342. [PMID: 30616045 DOI: 10.1016/j.watres.2018.12.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 12/03/2018] [Accepted: 12/17/2018] [Indexed: 06/09/2023]
Abstract
The two-phase continuous centrifugation process for olive oil extraction generates high amounts of olive oil mill wastewater (OMW), characterized by containing large concentrations of numerous contaminant compounds for the environment. An integral process based on physico-chemical (flocculation, photolysis and microfiltration) and microalgal growth stages was proposed for its treatment. Chemical oxygen demand (COD) removal percentages were 57.5%, 88.8% and 20.5% for flocculation, photolysis and microfiltration, respectively. The global removal percentages of organic load in the primary treatment were 96.2% for COD, 80.3% for total organic carbon (TOC) and 96.6% for total phenolic compounds (TPCs). In secondary treatment, different experiments using the microalgae Chlorella pyrenoidosa were performed on a laboratory scale in stirred batch tank reactors. The OMW concentrations in each culture medium were: 5%, 10%, 25%, 50%, 75% and 100% (v/v). The common experimental conditions were: pH = 7, temperature = 25 °C, agitation speed = 200 rpm, aeration rate = 0.5 (v/v) and illumination intensity = 359 μE m-2 s-1. The highest maximum specific growth rate (0.07 h-1) and volumetric biomass production (1.25 mg/(L h)) values were achieved in the culture with 50% of OMW (v/v). The final biomass obtained had a high percentage of carbohydrates, whose content ranged from 30.3% to 89.2% and the highest lipid content (34.2%) was determined in the culture with 25% of OMW (v/v). The final treated water is suitable for its use in irrigation, discharge to receiving waters or for being reused in the same process.
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Affiliation(s)
- Ana Malvis
- Molecular Biology and Biochemical Engineering Department, Chemical Engineering Area, University of Pablo de Olavide, ES-41013, Seville, Spain
| | - Gassan Hodaifa
- Molecular Biology and Biochemical Engineering Department, Chemical Engineering Area, University of Pablo de Olavide, ES-41013, Seville, Spain; Chemical, Environmental and Materials Department, University of Jaén, Centre of Advanced Studies in Olives and Olive-Oil, ES-23071, Jaén, Spain.
| | - Mansour Halioui
- Chemical, Environmental and Materials Department, University of Jaén, Centre of Advanced Studies in Olives and Olive-Oil, ES-23071, Jaén, Spain
| | | | - Sebastián Sánchez
- Chemical, Environmental and Materials Department, University of Jaén, Centre of Advanced Studies in Olives and Olive-Oil, ES-23071, Jaén, Spain
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15
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Nagabalaji V, Sivasankari G, Srinivasan SV, Suthanthararajan R, Ravindranath E. Nutrient removal from synthetic and secondary treated sewage and tannery wastewater through phycoremediation. ENVIRONMENTAL TECHNOLOGY 2019; 40:784-792. [PMID: 29171794 DOI: 10.1080/09593330.2017.1408689] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 11/18/2017] [Indexed: 06/07/2023]
Abstract
In this study, potential microalgae species (Chlorella vulgaris, Scenedesmus dimorphus, Chlorococcum sp. and Chlamydomonas sp.) have been studied for nutrient removal from synthetic and industrial wastewater. Batch experiments were carried out to investigate the removal performance among four chosen species at different nitrogen and phosphorus concentrations. NH4-N and PO4-P were varied from 13.2 to 52.8 mg/L and 6.6 to 26.4 mg/L, respectively, by keeping N:P ratio as 2:1. In synthetic wastewater, maximum NH4-N and PO4-P removal efficiencies of 88.6% and 91.2% were obtained with C. vulgaris when compared to the other microalgae studied. Further studies were carried out using C. vulgaris in batch experiments to investigate the nutrient removal performance in secondary treated sewage, soak liquor and composite tannery effluent. Experimental results indicated that NH4-N, NO3-N, PO4-P and chemical oxygen demand (COD) removal efficiencies were found to be 68.6%, 74%, 71.5% and 90.2%, respectively, in secondary treated sewage. Maximum removal efficiencies of NH4-N, NO3-N, PO4-P and COD in composite tannery wastewater were found to be 55%, 85.6%, 60.5% and 43.4%, respectively. In soak liquor, maximum removal efficiencies of NH4-N, NO3-N, PO4-P and COD were found to 66.7%, 62.6%, 63.6% and 93.8%, respectively.
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Affiliation(s)
- V Nagabalaji
- a Environmental Science and Engineering Division , Central Leather Research Institute , Chennai , India
| | - G Sivasankari
- a Environmental Science and Engineering Division , Central Leather Research Institute , Chennai , India
| | - S V Srinivasan
- a Environmental Science and Engineering Division , Central Leather Research Institute , Chennai , India
| | - R Suthanthararajan
- a Environmental Science and Engineering Division , Central Leather Research Institute , Chennai , India
| | - E Ravindranath
- a Environmental Science and Engineering Division , Central Leather Research Institute , Chennai , India
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16
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Rude KM, Barzee TJ, Franz AK. Producing Oleaginous Microorganisms Using Wastewater: Methods and Guidelines for Lab- and Industrial-Scale Production. Methods Mol Biol 2019; 1995:327-355. [PMID: 31148137 DOI: 10.1007/978-1-4939-9484-7_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cultivation of oleaginous microorganisms on wastewater provides alternative biofuel options while also acting as a remediation technique for alternative wastewater treatment. This chapter describes guidelines and methods for the production of oleaginous microorganisms-with a focus on microalgae-using wastewater as a growth medium while considering a variety of general challenges for both lab- and industrial-scale production. Cultivation techniques described here range in scale from microplates with 10-mL working volumes, up to multigallon, industrial-scale microorganism cultivation, with a focus on microalgae. This chapter includes guidelines for the preparation of wastewater and selection of oleaginous microorganisms combined with methods for the production of oleaginous microorganisms cultivated using wastewater.
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Affiliation(s)
- Kayla M Rude
- Department of Chemistry, University of California, Davis, Davis, CA, USA
- Agricultural and Environmental Chemistry Graduate Group, University of California, Davis, CA, USA
| | - Tyler J Barzee
- Department of Biological and Agricultural Engineering, University of California, Davis, Davis, CA, USA
| | - Annaliese K Franz
- Department of Chemistry, University of California, Davis, Davis, CA, USA.
- Agricultural and Environmental Chemistry Graduate Group, University of California, Davis, CA, USA.
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17
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Enhanced CO2 biofixation and protein production by microalgae biofilm attached on modified surface of nickel foam. Bioprocess Biosyst Eng 2018; 42:521-528. [DOI: 10.1007/s00449-018-2055-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 11/21/2018] [Indexed: 12/11/2022]
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18
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Biomass Production and Nutrient Removal by Chlorella vulgaris from Anaerobic Digestion Effluents. ENERGIES 2018. [DOI: 10.3390/en11071654] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Effect of Ca2+ concentration on Scenedesmus sp. growth in heterotrophic and photoautotrophic cultivation. N Biotechnol 2018; 40:228-235. [DOI: 10.1016/j.nbt.2017.09.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 09/13/2017] [Accepted: 09/13/2017] [Indexed: 11/21/2022]
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20
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Jez S, Spinelli D, Fierro A, Dibenedetto A, Aresta M, Busi E, Basosi R. Comparative life cycle assessment study on environmental impact of oil production from micro-algae and terrestrial oilseed crops. BIORESOURCE TECHNOLOGY 2017; 239:266-275. [PMID: 28531851 DOI: 10.1016/j.biortech.2017.05.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/03/2017] [Accepted: 05/04/2017] [Indexed: 06/07/2023]
Abstract
In this study the LCA methodology is applied in order to satisfy two goals: i) to evaluate the hot spots in site-specific production chain of biodiesel from terrestrial and micro-algae feedstock; ii) to compare quantitatively, utilizing primary data, the impacts of the first generation in respect to the third generation bio-fuels. Results show that micro-algae are neither competitive yet with traditional oil crops nor with fossil fuel. The use of renewable technologies as photovoltaics and biogas self production might increase the competitiveness of micro-algae oil. Further investigations are however necessary to optimize their production chain and to increase the added value of co-products.
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Affiliation(s)
- S Jez
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, Siena, Italy
| | - D Spinelli
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, Siena, Italy
| | - A Fierro
- Department of Biology and LuPT, University of Naples Federico II, Via Cinthia, Naples, Italy
| | | | - M Aresta
- CIRCC, via Celso Ulpiani 27, 70126 Bari, Italy
| | - E Busi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, Siena, Italy.
| | - R Basosi
- Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, Siena, Italy
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Pulido JMO. A review on the use of membrane technology and fouling control for olive mill wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 563-564:664-675. [PMID: 26472261 DOI: 10.1016/j.scitotenv.2015.09.151] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Revised: 09/29/2015] [Accepted: 09/29/2015] [Indexed: 06/05/2023]
Abstract
Olive mill effluents (OME) by-produced have significantly increased in the last decades as a result of the boost of the olive oil agro-industrial sector and due to the conversion into continuous operation centrifugation technologies. In these effluents, the presence of phytotoxic recalcitrant pollutants makes them resistant to biological degradation and thus inhibits the efficiency of biological and conventional processes. Many reclamation treatments as well as integrated processes for OME have already been proposed and developed but not led to completely satisfactory and cost-effective results. Olive oil industries in its current status, typically small mills dispersed, cannot afford such high treatment costs. Furthermore, conventional treatments are not able to abate the significant dissolved monovalent and divalent ions concentration present in OME. Within this framework, membrane technology offers high efficiency and moderate investment and maintenance expenses. Wastewater treatment by membrane technologies is growing in the recent years. This trend is owed to the fact of the availability of new membrane materials, membrane designs, membrane module concepts and general know-how, which have promoted credibility among investors. However, fouling reduces the membrane performances in time and leads to premature substitution of the membrane modules, and this is a problem of cost efficiency since wastewater treatment must imply low operating costs. Appropriate fouling inhibition methods should assure this result, thus making membrane processes for wastewater stream treatment both technically and economically feasible. In this paper, the treatment of the effluents by-produced in olive mills, generally called olive mill wastewaters, will be addressed. Within this context, the state of the art of the different pretreatments and integral membrane processes proposed up to today will be gathered and discussed, with an insight in the problem of fouling.
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23
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Ochando-Pulido JM, Víctor-Ortega MD, Martínez-Férez A. Recovery of iron after Fenton-like secondary treatment of olive mill wastewater by nano-filtration and low-pressure reverse osmosis membranes. GRASAS Y ACEITES 2016. [DOI: 10.3989/gya.1001153] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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24
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Sulochana SB, Arumugam M. Influence of abscisic acid on growth, biomass and lipid yield of Scenedesmus quadricauda under nitrogen starved condition. BIORESOURCE TECHNOLOGY 2016; 213:198-203. [PMID: 26949054 DOI: 10.1016/j.biortech.2016.02.078] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 02/17/2016] [Accepted: 02/19/2016] [Indexed: 05/03/2023]
Abstract
Scenedesmus quadricauda, accumulated more lipid but with a drastic reduction in biomass yield during nitrogen starvation. Abscisic acid (ABA) being a stress responsible hormone, its effect on growth and biomass with sustainable lipid yield during nitrogen depletion was studied. The result revealed that the ABA level shoots up at 24h (27.21pmol/L) during the onset of nitrogen starvation followed by a sharp decline. The external supplemented ABA showed a positive effect on growth pattern (38×10(6)cells/ml) at a lower concentration. The dry biomass yield is also increasing up to 2.1 fold compared to nitrogen deficient S. quadricauda. The lipid content sustains in 1 and 2μM concentration of ABA under nitrogen-deficient condition. The fatty acid composition of ABA treated S. quadricauda cultures with respect to nitrogen-starved cells showed 11.17% increment in saturated fatty acid content, the desired lipid composition for biofuel application.
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Affiliation(s)
- Sujitha Balakrishnan Sulochana
- Biotechnology Division, National Institute for Interdisciplinary Science and Technology (NIIST), Council of Scientific and Industrial Research (CSIR), Trivandrum, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), India
| | - Muthu Arumugam
- Biotechnology Division, National Institute for Interdisciplinary Science and Technology (NIIST), Council of Scientific and Industrial Research (CSIR), Trivandrum, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), India.
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25
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Lutzu GA, Zhang W, Liu T. Feasibility of using brewery wastewater for biodiesel production and nutrient removal by Scenedesmus dimorphus. ENVIRONMENTAL TECHNOLOGY 2015; 37:1568-1581. [PMID: 26714635 DOI: 10.1080/09593330.2015.1121292] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
This work investigates the potential use of a brewery wastewater as a medium for the cultivation of the oleaginous species Scenedesmus dimorphus with the double aim of removing nutrients and to produce biomass as feedstock for biodiesel. For this purpose, effects of nitrogen (61.8-247 mg L(-1)), phosphorous (1.4-5.5 mg L(-1)), and iron (1.5-6 mg L(-1)) concentrations on growth, nutrients uptake, lipid accumulation, and fatty acids profile of this microalga were investigated. Results showed that brewery wastewater can be used as a culture medium even if nitrogen and phosphorous concentrations should have been modified to improve both biomass (6.82 g L(-1)) and lipid accumulation (44.26%). The analysis revealed a C16-C18 composition of 93.47% fatty acids methyl esters with a relative high portion of unsaturated ones (67.24%). High removal efficiency (>99%) for total nitrogen and total phosphorous and a reduction of up to 65% in chemical oxygen demand were achieved, respectively. The final microalgae biomass, considering its high lipid content as well as its compliance with the standards for the quality of biodiesel, and considering also the high removal efficiencies obtained for macronutrients and organic carbon, makes the brewery wastewater a viable option as a priceless medium for the cultivation of microalgae.
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Affiliation(s)
- Giovanni Antonio Lutzu
- a Key Laboratory of Biofuel , Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Science , Qingdao , People's Republic of China
| | - Wei Zhang
- a Key Laboratory of Biofuel , Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Science , Qingdao , People's Republic of China
| | - Tianzhong Liu
- a Key Laboratory of Biofuel , Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Science , Qingdao , People's Republic of China
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26
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Ochando-Pulido JM, Martinez-Ferez A. On the Recent Use of Membrane Technology for Olive Mill Wastewater Purification. MEMBRANES 2015; 5:513-31. [PMID: 26426062 PMCID: PMC4703997 DOI: 10.3390/membranes5040513] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Accepted: 09/24/2015] [Indexed: 12/03/2022]
Abstract
Many reclamation treatments as well as integrated processes for the purification of olive mill wastewaters (OMW) have already been proposed and developed but not led to completely satisfactory results, principally due to complexity or cost-ineffectiveness. The olive oil industry in its current status, composed of little and dispersed factories, cannot stand such high costs. Moreover, these treatments are not able to abate the high concentration of dissolved inorganic matter present in these highly polluted effluents. In the present work, a review on the actual state of the art concerning the treatment and disposal of OMW by membranes is addressed, comprising microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), and reverse osmosis (RO), as well as membrane bioreactors (MBR) and non-conventional membrane processes such as vacuum distillation (VD), osmotic distillation (OD) and forward osmosis (FO). Membrane processes are becoming extensively used to replace many conventional processes in the purification of water and groundwater as well as in the reclamation of wastewater streams of very diverse sources, such as those generated by agro-industrial activities. Moreover, a brief insight into inhibition and control of fouling by properly-tailored pretreatment processes upstream the membrane operation and the use of the critical and threshold flux theories is provided.
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27
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Bleeke F, Quante G, Winckelmann D, Klöck G. Effect of voltage and electrode material on electroflocculation of Scenedesmus acuminatus. BIORESOUR BIOPROCESS 2015. [DOI: 10.1186/s40643-015-0064-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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28
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Wirth R, Lakatos G, Böjti T, Maróti G, Bagi Z, Kis M, Kovács A, Ács N, Rákhely G, Kovács KL. Metagenome changes in the mesophilic biogas-producing community during fermentation of the green alga Scenedesmus obliquus. J Biotechnol 2015; 215:52-61. [PMID: 26087313 DOI: 10.1016/j.jbiotec.2015.06.396] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 06/08/2015] [Accepted: 06/12/2015] [Indexed: 01/02/2023]
Abstract
A microalgal biomass offers a potential alternative to the maize silage commonly used in biogas technology. In this study, photoautotrophically grown Scenedesmus obliquus was used as biogas substrate. This microalga has a low C/N ratio of 8.5 relative to the optimum 20-30. A significant increase in the ammonium ion content was not observed. The methane content of the biogas generated from Sc. obliquus proved to be higher than that from maize silage, but the specific biogas yield was lower. Semi-continuous steady biogas production lasted for 2 months. Because of the thick cell wall of Sc. obliquus, the biomass-degrading microorganisms require additional time to digest its biomass. The methane concentration in the biogas was also high, in co-digestion (i.e., 52-56%) as in alga-fed anaerobic digestion (i.e., 55-62%). These results may be related to the relative predominance of the order Clostridiales in co-digestion and to the more balanced C/N ratio of the mixed algal-maize biomass. Predominance of the order Methanosarcinales was observed in the domain Archaea, which supported the diversity of metabolic pathways in the process.
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Affiliation(s)
- Roland Wirth
- Department of Biotechnology, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary.
| | - Gergely Lakatos
- Institute of Biochemistry, Biological Research Center, Hungarian Academy of Sciences, Temesvári krt. 62, H-6726 Szeged, Hungary.
| | - Tamás Böjti
- Department of Biotechnology, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary.
| | - Gergely Maróti
- Institute of Biochemistry, Biological Research Center, Hungarian Academy of Sciences, Temesvári krt. 62, H-6726 Szeged, Hungary.
| | - Zoltán Bagi
- Department of Biotechnology, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary.
| | - Mihály Kis
- Institute of Plant Biology, Biological Research Center, Hungarian Academy of Sciences, Temesvári krt. 62, H-6726 Szeged, Hungary.
| | - Attila Kovács
- Phytoplankton and Macrophyte Research Team, Balaton Limnological Institute, Klebersberg Kuno 3, H-8237 Tihany, Hungary.
| | - Norbert Ács
- Department of Biotechnology, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary.
| | - Gábor Rákhely
- Department of Biotechnology, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary; Institute of Biophysics, Biological Research Center, Hungarian Academy of Sciences, Temesvári krt. 62, H-6726 Szeged, Hungary.
| | - Kornél L Kovács
- Department of Biotechnology, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary; Institute of Biophysics, Biological Research Center, Hungarian Academy of Sciences, Temesvári krt. 62, H-6726 Szeged, Hungary; Department of Oral Biology and Experimental Dental Research, University of Szeged, Tisza L. krt. 64, H-6720 Szeged, Hungary.
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29
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Engineering biological systems toward a sustainable bioeconomy. J Ind Microbiol Biotechnol 2015; 42:813-38. [PMID: 25845304 DOI: 10.1007/s10295-015-1606-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Accepted: 03/09/2015] [Indexed: 01/07/2023]
Abstract
The nature of our major global risks calls for sustainable innovations to decouple economic growth from greenhouse gases emission. The development of sustainable technologies has been negatively impacted by several factors including sugar production costs, production scale, economic crises, hydraulic fracking development and the market inability to capture externality costs. However, advances in engineering of biological systems allow bridging the gap between exponential growth of knowledge about biology and the creation of sustainable value chains for a broad range of economic sectors. Additionally, industrial symbiosis of different biobased technologies can increase competitiveness and sustainability, leading to the development of eco-industrial parks. Reliable policies for carbon pricing and revenue reinvestments in disruptive technologies and in the deployment of eco-industrial parks could boost the welfare while addressing our major global risks toward the transition from a fossil to a biobased economy.
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30
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Ochando Pulido JM. The importance of pretreatment tailoring on the performance of ultrafiltration membranes to treat two-phase olive mill wastewater. GRASAS Y ACEITES 2015. [DOI: 10.3989/gya.0829142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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31
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Yang K, Qin L, Wang Z, Feng W, Feng P, Zhu S, Xu J, Yuan Z. Water-saving analysis on an effective water reuse system in biodiesel feedstock production based on Chlorella zofingiensis fed-batch cultivation. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2015; 71:1562-1568. [PMID: 26442499 DOI: 10.2166/wst.2015.139] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The micralgae-based biofuel obtained from dairy wastewater (DWW) is considered a promising source of energy. However, this process consumes water due to the concentration of wastewater being normally too high for some micoralgae cultivation, and dilution is always needed. In this work, the cultivation of microalgae has been examined in non-recirculated water (NR) and recirculated water systems (R). The growth of Chlorella zofingiensis and the nutrient removal of DWW have been recorded. The comparison indicates the R had a little more advantage in biomass and lipid output (1.55, 0.22 g, respectively) than the NR (1.51, 0.20 g, respectively). However, the total chemical oxygen demand (COD), total Kjeldahl nitrogen (TKN), and total phosphorus (TP) removals of the R were lower than those of the NR system during the culture. The highest removal of total COD, TKN, and TP were 85.05%, 93.64%, and 98.45%, respectively. Furthermore, no significant difference has been observed in the higher heating value and lipid content of the biomass of the R and NR. The results show the R can save 30% of the total water input during the culture. All above results indicate the R system has great potential in industry.
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Affiliation(s)
- Kang Yang
- Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Guangzhou 510640, China E-mail: ; University of Chinese Academy of Sciences, Beijing 100049, China; †These two authors contributed equally to this work
| | - Lei Qin
- Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Guangzhou 510640, China E-mail: ; †These two authors contributed equally to this work
| | - Zhongming Wang
- Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Guangzhou 510640, China E-mail:
| | - Wei Feng
- Beijing Key Laboratory of Bioprocess, Department of Biochemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Pingzhong Feng
- Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Guangzhou 510640, China E-mail:
| | - Shunni Zhu
- Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Guangzhou 510640, China E-mail:
| | - Jingliang Xu
- Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Guangzhou 510640, China E-mail:
| | - Zhenhong Yuan
- Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Guangzhou 510640, China E-mail:
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Ding J, Zhao F, Cao Y, Xing L, Liu W, Mei S, Li S. Cultivation of microalgae in dairy farm wastewater without sterilization. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2015; 17:222-227. [PMID: 25397979 DOI: 10.1080/15226514.2013.876970] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The present study investigated the feasibility of cultivating microalgae in dairy farm wastewater. The growth of microalgae and the removal rate of the nutrient from the wastewater were examined. The wastewater was diluted 20, 10 and 5 times before applied to cultivate microalgae. A 5 dilution yielded 0.86 g/L dry weight in 6 days with a relative growth rate of 0.28 d(-1), the 10×dilution gave 0.74 g/L and a relative growth rate of 0.26 d(-1) while the 20×dilution 0.59 g/L and a relative growth rate 0.23 d(-1). The nutrients in the wastewater could be removed effectively in different diluted dairy wastewater. The greatest dilution (20×) showed the removal rates: ammonia, 99.26%; P, 89.92%; COD, 84.18%. A 10×dilution removal% was: ammonia 93; P 91 and COD 88. The 5× dilution removal% was: ammonia 83; P 92; COD 90.
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Affiliation(s)
- Jinfeng Ding
- a Chinese Academy of Agricultural Mechanization Sciences , Chaoyang District, Beijing , China
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33
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Advances in the Production of High-Value Products by Microalgae. Ind Biotechnol (New Rochelle N Y) 2014. [DOI: 10.1089/ind.2013.0039] [Citation(s) in RCA: 168] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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34
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Threshold flux measurement of an ultrafiltration membrane module in the treatment of two-phase olive mill wastewater. Chem Eng Res Des 2014. [DOI: 10.1016/j.cherd.2013.11.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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35
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Nutrient Removal Efficiency and Physiological Responses of Desmodesmus communis at Different HRTs and Nutrient Stress Condition Using Different Sources of Urban Wastewater Effluents. Appl Biochem Biotechnol 2014; 173:74-89. [DOI: 10.1007/s12010-014-0792-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2013] [Accepted: 02/10/2014] [Indexed: 10/25/2022]
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36
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A novel photocatalyst with ferromagnetic core used for the treatment of olive oil mill effluents from two-phase production process. ScientificWorldJournal 2013; 2013:196470. [PMID: 24489490 PMCID: PMC3893870 DOI: 10.1155/2013/196470] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Accepted: 10/02/2013] [Indexed: 11/29/2022] Open
Abstract
Photocatalytic degradation of olive oil mill wastewater from two-phase continuous centrifugation process was studied. A novel photocatalyst with ferromagnetic properties was characterized and investigated. The degradation capacity of the photocatalytic process of olive oil washing wastewater (OMW) and mixture of olives and olive oil (1 v/v) washing wastewaters (MOMW) was demonstrated. At lab-scale, the %COD removal and residence time (τ) for MOMW and OMW were 58.4% (τ = 2 h) and 21.4% (τ = 3 h), respectively. On the other hand, at pilot scale, 23.4% CODremoval, 19.2% total phenolsremoval, and 28.1% total suspended solidsremoval were registered at the end of the UV/TiO2 process for OMW, whereas 58.3% CODremoval, 27.5% total phenolsremoval, and 25.0% total suspended solidsremoval for MOMW. Also, before the UV/TiO2 reaction, a pH-T flocculation operation as pretreatment was realized. The overall efficiency of the treatment process for MOMW was up to 91% of CODremoval, in contrast with 33.2% of CODremoval for OMW.
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Ochando-Pulido JM, Hodaifa G, Victor-Ortega MD, Rodriguez-Vives S, Martinez-Ferez A. Reuse of olive mill effluents from two-phase extraction process by integrated advanced oxidation and reverse osmosis treatment. JOURNAL OF HAZARDOUS MATERIALS 2013; 263 Pt 1:158-167. [PMID: 23910394 DOI: 10.1016/j.jhazmat.2013.07.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Revised: 07/08/2013] [Accepted: 07/09/2013] [Indexed: 06/02/2023]
Abstract
In this work, complete reclamation of the olive mill effluents coming from a two-phase olive oil extraction process (OME-2) was studied on a pilot scale. The developed depuration procedure integrates an advanced oxidation process based on Fenton's reagent (secondary treatment) coupled with a final reverse osmosis (RO) stage (purification step). The former aims for the removal of the major concentration of refractory organic pollutants present in OME-2, whereas the latter provides efficient purification of the high salinity. Complete physicochemical composition of OME-2 after the secondary treatment was examined, including the particle size distribution, organic matter gradation and bacterial growth, in order to assess the selection of the membrane and its fouling propensity. Hydrodynamics and selectivity of the membrane were accurately modelized. Upon optimization of the hydrodynamic conditions, the RO membrane showed stable performance and fouling problems were satisfactorily overcome. Steady-state permeate flux equal to 21.1 L h(-1)m(-2) and rejection values up to 99.1% and 98.1% of the organic pollutants and electroconductivity were respectively attained. This ensured parametric values below standard limits for reuse of the regenerated effluent, e.g. in the olives washing machines, offering the possibility of closing the loop and thus rending the production process environmentally friendly.
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Affiliation(s)
- J M Ochando-Pulido
- Department of Chemical Engineering, University of Granada, 18071 Granada, Spain.
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38
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Ochando-Pulido JM, Hodaifa G, Victor-Ortega MD, Rodriguez-Vives S, Martinez-Ferez A. Effective treatment of olive mill effluents from two-phase and three-phase extraction processes by batch membranes in series operation upon threshold conditions. JOURNAL OF HAZARDOUS MATERIALS 2013; 263 Pt 1:168-176. [PMID: 23602253 DOI: 10.1016/j.jhazmat.2013.03.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Revised: 03/13/2013] [Accepted: 03/16/2013] [Indexed: 06/02/2023]
Abstract
Production of olive oil results in the generation of high amounts of heavy polluted effluents characterized by extremely variable contaminants degree, leading to sensible complexity in treatment. In this work, batch membrane processes in series comprising ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO) are used to purify the effluents exiting both the two-phase and tree-phase extraction processes to a grade compatible to the discharge in municipal sewer systems in Spain and Italy. However, one main problem in applying this technology to wastewater management issues is given by membrane fouling. In the last years, the threshold flux theory was introduced as a key tool to understand fouling problems, and threshold flux measurement can give valuable information regarding optimal membrane process design and operation. In the present manuscript, mathematical approach of threshold flux conditions for membranes operation is addressed, also implementing proper pretreatment processes such as pH-T flocculation and UV/TiO2 photocatalysis with ferromagnetic-core nanoparticles in order to reduce membranes fouling. Both influence the organic matter content as well as the particle size distribution of the solutes surviving in the wastewater stream, leading, when properly applied, to reduced fouling, higher rejection and recovery values, thus enhancing the economic feasibility of the process.
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Affiliation(s)
- J M Ochando-Pulido
- Department of Chemical Engineering, University of Granada, 18071 Granada, Spain.
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Xiao M, Shin HJ, Dong Q. Advances in cultivation and processing techniques for microalgal biodiesel: A review. KOREAN J CHEM ENG 2013. [DOI: 10.1007/s11814-013-0161-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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40
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Performance modeling and cost analysis of a pilot-scale reverse osmosis process for the final purification of olive mill wastewater. MEMBRANES 2013; 3:285-97. [PMID: 24957058 PMCID: PMC4021955 DOI: 10.3390/membranes3040285] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 09/08/2013] [Accepted: 09/29/2013] [Indexed: 11/30/2022]
Abstract
A secondary treatment for olive mill wastewater coming from factories working with the two-phase olive oil production process (OMW-2) has been set-up on an industrial scale in an olive oil mill in the premises of Jaén (Spain). The secondary treatment comprises Fenton-like oxidation followed by flocculation-sedimentation and filtration through olive stones. In this work, performance modelization and preliminary cost analysis of a final reverse osmosis (RO) process was examined on pilot scale for ulterior purification of OMW-2 with the goal of closing the loop of the industrial production process. Reduction of concentration polarization on the RO membrane equal to 26.3% was provided upon increment of the turbulence over the membrane to values of Reynolds number equal to 2.6 × 104. Medium operating pressure (25 bar) should be chosen to achieve significant steady state permeate flux (21.1 L h−1 m−2) and minimize membrane fouling, ensuring less than 14.7% flux drop and up to 90% feed recovery. Under these conditions, irreversible fouling below 0.08 L h−2 m−2 bar−1 helped increase the longevity of the membrane and reduce the costs of the treatment. For 10 m3 day−1 OMW-2 on average, 47.4 m2 required membrane area and 0.87 € m−3 total costs for the RO process were estimated.
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Cicci A, Stoller M, Bravi M. Microalgal biomass production by using ultra- and nanofiltration membrane fractions of olive mill wastewater. WATER RESEARCH 2013; 47:4710-4718. [PMID: 23770485 DOI: 10.1016/j.watres.2013.05.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 05/14/2013] [Accepted: 05/18/2013] [Indexed: 06/02/2023]
Abstract
Olive milling produces huge amounts of wastewater (OMWW) characterized by an extremely high organic load. Its polyphenols content is a hindrance to conventional biological treatment and to using it as growing medium for common microbial biomasses. The practice to dump it on soil is in conflict with the latest EU directives about waste management. OMWW can be effectively and efficiently treated by means of membrane technology to a fraction of the initial volume, but membrane processing concentrates still require treatment. Reversing the overall cost balance of membrane processing and subsequent treatment requires valorizing the concentrates through their reuse, as well as ensuring long-term service of the membrane system through effective wastewater pretreatment and sustainable, fouling-controlling, membrane operation conduite. Aim of this work is to reuse and valorize the ultra- and nanofiltration membrane concentrates as media for biomass production of microalgae and cyanobacteria. Scenedesmus dimorphus and Arthrospira platensis, usable as a food, feed, nutraceutical component or feedstock for biofuels, were selected for this investigation. Microalgal growth was experimentally determined and related to the composition of the concentrate-based media and to the irradiance distribution within the photobioreactor volume to decouple light limitation and medium chemical composition effects.
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Affiliation(s)
- A Cicci
- University of Rome La Sapienza, Department of Chemical Engineering, Via Eudossiana 18, 00184 Rome, Italy.
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42
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Abdelaziz AEM, Leite GB, Hallenbeck PC. Addressing the challenges for sustainable production of algal biofuels: I. Algal strains and nutrient supply. ENVIRONMENTAL TECHNOLOGY 2013; 34:1783-805. [PMID: 24350435 DOI: 10.1080/09593330.2013.827748] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Microalgae hold promise for the production of sustainable replacement of fossil fuels due to their high growth rates, ability to grow on non-arable land and their high content, under the proper conditions, of high energy compounds that can be relatively easily chemically converted to fuels using existing technology. However, projected large-scale algal production raises a number of sustainability concerns concerning land use, net energy return, water use and nutrient supply. The state-of-the-art of algal production of biofuels is presented with emphasis on some possible avenues to provide answers to the sustainability questions that have been raised. Here, issues concerning algal strains and supply of nutrients for large-scale production are discussed. Since sustainability concerns necessitate the use of wastewaters for supply of bulk nutrients, emphasis is placed on the composition and suitability of different wastewater streams. At the same time, algal cultivation has proven useful in waste treatment processes, and thus this aspect is also treated in some detail.
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Affiliation(s)
- Ahmed E M Abdelaziz
- Département de microbiologie et immunologie, Université de Montréal, CP 6128, Centre-ville, Montréal, Canada PQ H3C 3J7
| | - Gustavo B Leite
- Département de microbiologie et immunologie, Université de Montréal, CP 6128, Centre-ville, Montréal, Canada PQ H3C 3J7
| | - Patrick C Hallenbeck
- Département de microbiologie et immunologie, Université de Montréal, CP 6128, Centre-ville, Montréal, Canada PQ H3C 3J7
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43
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Comparison of fatty acid analysis methods for assessing biorefinery applicability of wastewater cultivated microalgae. Talanta 2012; 97:103-10. [DOI: 10.1016/j.talanta.2012.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2012] [Revised: 03/31/2012] [Accepted: 04/02/2012] [Indexed: 11/20/2022]
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Mata TM, Melo AC, Simões M, Caetano NS. Parametric study of a brewery effluent treatment by microalgae Scenedesmus obliquus. BIORESOURCE TECHNOLOGY 2012; 107:151-8. [PMID: 22244957 DOI: 10.1016/j.biortech.2011.12.109] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Revised: 12/19/2011] [Accepted: 12/20/2011] [Indexed: 05/18/2023]
Abstract
This work analyses the potential of using microalgae Scenedesmus obliquus (So) for a brewery wastewater treatment and biomass production. The chemical oxygen demand (COD), total nitrogen (TN) and total carbon (TC) was followed in time, and the influence of light exposure, light intensity and culture aeration was studied. Results show that the most adequate conditions for cultivating So in this effluent are the aerated cultures, exposed to a 12h period of daily light, at 12000 Lux intensity. At these conditions it is obtained a maximum of 0.9 g of dry biomass per liter of culture, after 9 days, for a maximum reduction of 57.5% and 20.8% of COD and TN, respectively, after 14 days, and 56.9% of TC, after 13 days, corresponding to the final values of 1692 mg O(2)/L COD, 47 mg N/L TN, and 1mg C/L TC.
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Affiliation(s)
- Teresa M Mata
- LEPAE - Laboratory for Process, Environmental and Energy Engineering, FEUP, Portugal.
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45
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46
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Wang H, Xiong H, Hui Z, Zeng X. Mixotrophic cultivation of Chlorella pyrenoidosa with diluted primary piggery wastewater to produce lipids. BIORESOURCE TECHNOLOGY 2012; 104:215-20. [PMID: 22130084 DOI: 10.1016/j.biortech.2011.11.020] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Revised: 11/02/2011] [Accepted: 11/05/2011] [Indexed: 05/13/2023]
Abstract
Piggery wastewater that is used for microalgae cultivation has usually been treated by secondary treatment processes. The present study investigates mixotrophic cultivation of the green microalgae Chlorella pyrenoidosa with primary piggery wastewater that has merely been diluted before use. The biomass productivity of the microalgae exhibited a positive linear correlation with the initial COD values, which ranged from 250 to 1000 mg/L. Nutrients in the piggery wastewater were removed efficiently; for example, the removal rate of ammonium was over 90% in all diluted samples. Profiles of fatty acids in the algal lipids were different after cultivation in piggery wastewater medium compared to Bristol's solution. The maximum lipid productivity of 6.3 mg L(-1) day(-1), which was achieved when the initial COD was 1000 mg/L, is not superior to other reports, but it suggests a convenient way to reduce the high organic content of piggery waste with the production of algal lipids.
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Affiliation(s)
- Haiying Wang
- Key Lab for Microorganisms and Biotransformation, College of Life Science, South-Central University for Nationalities, Wuhan 430074, China.
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47
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Thermophilic, anaerobic co-digestion of microalgal biomass and cellulose for H2 production. Biodegradation 2010; 22:805-14. [DOI: 10.1007/s10532-010-9419-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2010] [Accepted: 09/14/2010] [Indexed: 10/19/2022]
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48
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Hodaifa G, Martínez ME, Sánchez S. Influence of temperature on growth of Scenedesmus obliquus in diluted olive mill wastewater as culture medium. Eng Life Sci 2010. [DOI: 10.1002/elsc.201000005] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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49
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Hodaifa G, Martínez ME, Sánchez S. Influence of pH on the culture of Scenedesmus obliquus in olive-mill wastewater. BIOTECHNOL BIOPROC E 2010. [DOI: 10.1007/s12257-009-0119-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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50
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Froissard M, D'andréa S, Boulard C, Chardot T. Heterologous expression of AtClo1, a plant oil body protein, induces lipid accumulation in yeast. FEMS Yeast Res 2009; 9:428-38. [PMID: 19220478 DOI: 10.1111/j.1567-1364.2009.00483.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Proteomic approaches on lipid bodies have led to the identification of proteins associated with this compartment, showing that, rather than the inert fat depot, lipid droplets appear as complex dynamic organelles with roles in metabolism control and cell signaling. We focused our investigations on caleosin [Arabidopsis thaliana caleosin 1 (AtClo1)], a minor protein of the Arabidopsis thaliana seed lipid body. AtClo1 shares an original triblock structure, which confers to the protein the capacity to insert at the lipid body surface. In addition, AtClo1 possesses a calcium-binding domain. The study of plants deficient in caleosin revealed its involvement in storage lipid degradation during seed germination. Using Saccharomyces cerevisiae as a heterologous expression system, we investigated the potential role of AtClo1 in lipid body biogenesis and filling. The green fluorescent protein-tagged protein was correctly targeted to lipid bodies. We observed an increase in the number and size of lipid bodies. Moreover, transformed yeasts accumulated more fatty acids (+46.6%). We confirmed that this excess of fatty acids was due to overaccumulation of lipid body neutral lipids, triacylglycerols and steryl esters. We showed that the original intrinsic properties of AtClo1 protein were sufficient to generate a functional lipid body membrane and to promote overaccumulation of storage lipids in yeast oil bodies.
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Affiliation(s)
- Marine Froissard
- UMR 206 Chimie Biologique, Centre de Biotechnologie Agro-Industrielle, INRA, Thiverval Grignon, France.
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