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Jiaqi S, Lifen L, Fenglin Y. Successful bio-electrochemical treatment of nitrogenous mariculture wastewater by enhancing nitrogen removal via synergy of algae and cathodic photo-electro-catalysis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140738. [PMID: 32673918 DOI: 10.1016/j.scitotenv.2020.140738] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/02/2020] [Accepted: 07/02/2020] [Indexed: 06/11/2023]
Abstract
Systems with catalytic cathode in microbial fuel cell can achieve high treatment efficiency enhanced by the cathode. Such bio-electrochemical systems have potential applications in treating high-salinity nitrogenous mariculture wastewater. For sustainable development of the mariculture industry, enhancing inorganic nitrogen removal is of vital importance due to the low carbon to nitrogen (C/N) ratio of wastewater and strict discharge standard. Herein, simulated mariculture wastewater (high salinity, low COD/N ratio of 0.5-1.0) was successfully treated in an integrated self-biased bio-electrochemical system, with catalyst (TiO2/Co-WO3/SiC) on the cathode and natural-grown algae in the cathode chamber. Satisfactory nitrogen removal (94.05% NH4+-N and 77.35% inorganic nitrogen) and favorable 76.66% removal of organics (UV254) were both achieved, with visible light illumination. The NH4+-N in the effluent was below 2 mg L-1. The synergy of bacteria, algae and cathode, promoted pollutant removal, and made the system sustainable and efficient in treating mariculture wastewater.
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Affiliation(s)
- Sun Jiaqi
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science & Technology, Dalian University of Technology, Dalian 116024, China
| | - Liu Lifen
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science & Technology, Dalian University of Technology, Dalian 116024, China; School of Ocean Science and Technology, Dalian University of Technology, Panjin, China.
| | - Yang Fenglin
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science & Technology, Dalian University of Technology, Dalian 116024, China
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52
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Suastes-Rivas JK, Hernández-Altamirano R, Mena-Cervantes VY, Valdez-Ojeda R, Toledano-Thompson T, Tovar-Gálvez LR, López-Adrián S, Chairez I. Efficient production of fatty acid methyl esters by a wastewater-isolated microalgae-yeast co-culture. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:28490-28499. [PMID: 31845266 DOI: 10.1007/s11356-019-07286-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 12/03/2019] [Indexed: 06/10/2023]
Abstract
Improving the competitiveness of biodiesel production by microalgae cultures requires the application of several strategies to obtain a high content of lipids, rapid biomass growth and a capacity to adapt to different kinds of environment, with the aim of using non-renewable nutrient sources. Therefore, the use of an individual indigenous microalgae strain or a consortium from natural or anthropogenic sites is now considered an alternative for biofuel production. This study examined the temporal behaviour of secondary metabolites produced by a native microalgae and yeast consortium isolated from wastewater, which was characterized by a genetic identification method based on the MiSeq system. The predominant species in the consortium was Scenedesmus obliquus, representing 68% of the organisms. In addition, the consortium contained a number of yeast species, including Candida pimensis (43%), Arthroderma vanbreuseghemii (23%), Diaporthe aspalathi/Diaporthe meridionalis (25%) and Hericium americanum (3%). This indigenous co-culture of microalgae and yeast showed biomass productivity of 0.06 g l-1 day-1, with a content of 30% (w/w) carbohydrates, 4% (w/w) proteins and 55% (w/w) lipids. Transesterification of the extracted lipids produced fatty acid methyl esters (FAMEs), which were analysed by gas chromatography (GC). The FAMEs included methyl pentadecanoate (1.90%), cis-10-pentanedecanoic acid methyl ester (1.36%), methyl palmitate (2.64%), methyl palmitoleate (21.36%), methyl oleate (64.95%), methyl linolenate (3.83%) and methyl linolelaidate (3.95%). This composition was relevant for biodiesel production based on the co-culture of indigenous microalgae and yeast consortia.
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Affiliation(s)
- Jessica K Suastes-Rivas
- Centro Mexicano para la Producción más Limpia, Instituto Politécnico Nacional, Av. Acueducto s/n, Col. La Laguna Ticomán, 07340, Mexico City, Mexico
- Laboratorio Nacional de Desarrollo y Aseguramiento de la Calidad de Biocombustibles (LaNDACBio), Instituto Politécnico Nacional, 07340, Mexico City, Mexico
| | - Raúl Hernández-Altamirano
- Centro Mexicano para la Producción más Limpia, Instituto Politécnico Nacional, Av. Acueducto s/n, Col. La Laguna Ticomán, 07340, Mexico City, Mexico.
- Laboratorio Nacional de Desarrollo y Aseguramiento de la Calidad de Biocombustibles (LaNDACBio), Instituto Politécnico Nacional, 07340, Mexico City, Mexico.
| | - Violeta Y Mena-Cervantes
- Centro Mexicano para la Producción más Limpia, Instituto Politécnico Nacional, Av. Acueducto s/n, Col. La Laguna Ticomán, 07340, Mexico City, Mexico
- Laboratorio Nacional de Desarrollo y Aseguramiento de la Calidad de Biocombustibles (LaNDACBio), Instituto Politécnico Nacional, 07340, Mexico City, Mexico
| | - Ruby Valdez-Ojeda
- Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán A.C, Merida, Yucatán, Mexico
| | - Tanit Toledano-Thompson
- Unidad de Energía Renovable, Centro de Investigación Científica de Yucatán A.C, Merida, Yucatán, Mexico
| | - Luis R Tovar-Gálvez
- Instituto Politécnico Nacional, Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), 30 de junio de 1520 s/n, La Laguna Ticomán, 07340, Mexico City, Mexico
| | - Silvia López-Adrián
- Facultad de Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Merida, Yucatán, Mexico
| | - Isaac Chairez
- Departamento de Bioprocesos, Instituto Politécnico Nacional, Unidad Profesional Interdisciplinaria de Biotecnología, Av. Acueducto s/n, Col. La Laguna Ticomán, 07340, Mexico City, Mexico
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53
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Papadopoulos KP, Economou CN, Dailianis S, Charalampous N, Stefanidou N, Moustaka-Gouni M, Tekerlekopoulou AG, Vayenas DV. Brewery wastewater treatment using cyanobacterial-bacterial settleable aggregates. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101957] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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54
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Mallick I, Kirtania P, Szabó M, Bashir F, Domonkos I, Kós PB, Vass I. A simple method to produce Synechocystis PCC6803 biofilm under laboratory conditions for electron microscopic and functional studies. PLoS One 2020; 15:e0236842. [PMID: 32730363 PMCID: PMC7392257 DOI: 10.1371/journal.pone.0236842] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 07/14/2020] [Indexed: 11/20/2022] Open
Abstract
Cyanobacteria can form biofilms in nature, which have ecological roles and high potential for practical applications. In order to study them we need biofilm models that contain healthy cells and can withstand physical manipulations needed for structural studies. At present, combined studies on the structural and physiological features of axenic cyanobacterial biofilms are limited, mostly due to the shortage of suitable model systems. Here, we present a simple method to establish biofilms using the cyanobacterium Synechocystis PCC6803 under standard laboratory conditions to be directly used for photosynthetic activity measurements and scanning electron microscopy (SEM). We found that glass microfiber filters (GMF) with somewhat coarse surface features provided a suitable skeleton to form Synechocystis PCC6803 biofilms. Being very fragile, untreated GMFs were unable to withstand the processing steps needed for SEM. Therefore, we used polyhydroxybutyrate coating to stabilize the filters. We found that up to five coats resulted in GMF stabilization and made possible to obtain high resolution SEM images of the structure of the surface-attached cells and the extensive exopolysaccharide and pili network, which are essential features of biofilm formation. By using pulse-amplitude modulated variable chlorophyll fluorescence imaging, it was also demonstrated that the biofilms contain photosynthetically active cells. Therefore, the Synechocystis PCC6803 biofilms formed on coated GMFs can be used for both structural and functional investigations. The model presented here is easy to replicate and has a potential for high-throughput studies.
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Affiliation(s)
- Ivy Mallick
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Prithwiraj Kirtania
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Milán Szabó
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Faiza Bashir
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
- Biology PhD School, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Ildiko Domonkos
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Peter B. Kós
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
- Department of Biotechnology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Imre Vass
- Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
- * E-mail:
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Petrini S, Foladori P, Beghini F, Armanini F, Segata N, Andreottola G. How inoculation affects the development and the performances of microalgal-bacterial consortia treating real municipal wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 263:110427. [PMID: 32174516 DOI: 10.1016/j.jenvman.2020.110427] [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: 09/18/2019] [Revised: 03/05/2020] [Accepted: 03/09/2020] [Indexed: 06/10/2023]
Abstract
To date, little is known about the start-up of photobioreactors and the progressive development of stable microalgal-bacterial consortia with a view to the full-scale treatment of real wastewater. Two photo-sequencing bioreactors, one inoculated with Chlorella vulgaris (RC) and one with the absence of inoculum (RW), were fed with real municipal wastewater and run in parallel for 101 days. The influence of the inoculation was evaluated in terms of pollutant removal efficiency, excess sludge production, solids settleability and microbial community characteristics. No significant differences were observed in the removal of COD (89 ± 4%; 88 ± 3%) and ammonium (99 ± 1%; 99 ± 1%), mainly associated with bacteria activity. During the first weeks of acclimation, Chlorella vulgaris in RC promoted better P removal and very high variations of DO and pH. Conversely, under steady-state conditions, no significant differences were observed between the performances of RC and RW, showing good settleability and low effluent solids, 7 ± 8 and 13 ± 10 mg TSS/L respectively. Microbiome analysis via 16S rRNA gene sequencing showed that, despite a different evolution, the microbial community was quite similar in both reactors under steady state conditions. Overall, the results suggested that the inoculation of microalgae is not essential to engender a photobioreactor aimed at treating real municipal wastewater.
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Affiliation(s)
- Serena Petrini
- Department of Civil, Environmental and Mechanical Engineering, University of Trento, via Mesiano 77, 38123, Trento, Italy.
| | - Paola Foladori
- Department of Civil, Environmental and Mechanical Engineering, University of Trento, via Mesiano 77, 38123, Trento, Italy
| | - Francesco Beghini
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, via Sommarive 9, 38123, Trento, Italy
| | - Federica Armanini
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, via Sommarive 9, 38123, Trento, Italy
| | - Nicola Segata
- Department of Cellular, Computational and Integrative Biology (CIBIO), University of Trento, via Sommarive 9, 38123, Trento, Italy
| | - Gianni Andreottola
- Department of Civil, Environmental and Mechanical Engineering, University of Trento, via Mesiano 77, 38123, Trento, Italy
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Kiran Marella T, Saxena A, Tiwari A. Diatom mediated heavy metal remediation: A review. BIORESOURCE TECHNOLOGY 2020; 305:123068. [PMID: 32156552 DOI: 10.1016/j.biortech.2020.123068] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 02/15/2020] [Accepted: 02/18/2020] [Indexed: 05/09/2023]
Abstract
Exposure to heavy metals is a major threat to aquatic bodies and is a global concern to our four main spheres of the earth viz. atmosphere, biosphere, hydrosphere, and lithosphere. The biosorption of pollutants using naturally inspired sources like microalgae has considerable advantages. Diatoms are the most dominant and diverse group of phytoplankton which accounts for 45% oceanic primary productivity. They perform a pioneer part in the biogeochemistry of metals in both fresh and marine water ecosystems. The diatoms play a significant role in degradation, speciation, and detoxification of chemical wastes and hazardous metals from polluted sites. Herein, an overview is presented about the ability of diatom algae to phycoremediate heavy metals by passive adsorption and active assimilation from their aqueous environments with an emphasis on extracellular and intracellular mechanisms involved in contaminant uptake through the frustules for preventing heavy metal toxicity.
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Affiliation(s)
- Thomas Kiran Marella
- International Crop Research Institute for Semi-arid Tropics (ICRISAT), Patancheru 502 324, Telangana State, India
| | - Abhishek Saxena
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh 201 313, India
| | - Archana Tiwari
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh 201 313, India.
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57
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From Laboratory Tests to the Ecoremedial System: The Importance of Microorganisms in the Recovery of PPCPs-Disturbed Ecosystems. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10103391] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The presence of a wide variety of emerging pollutants in natural water resources is an important global water quality challenge. Pharmaceuticals and personal care products (PPCPs) are known as emerging contaminants, widely used by modern society. This objective ensures availability and sustainable management of water and sanitation for all, according to the 2030 Agenda. Wastewater treatment plants (WWTP) do not always mitigate the presence of these emerging contaminants in effluents discharged into the environment, although the removal efficiency of WWTP varies based on the techniques used. This main subject is framed within a broader environmental paradigm, such as the transition to a circular economy. The research and innovation within the WWTP will play a key role in improving the water resource management and its surrounding industrial and natural ecosystems. Even though bioremediation is a green technology, its integration into the bio-economy strategy, which improves the quality of the environment, is surprisingly rare if we compare to other corrective techniques (physical and chemical). This work carries out a bibliographic review, since the beginning of the 21st century, on the biological remediation of some PPCPs, focusing on organisms (or their by-products) used at the scale of laboratory or scale-up. PPCPs have been selected on the basics of their occurrence in water resources. The data reveal that, despite the advantages that are associated with bioremediation, it is not the first option in the case of the recovery of systems contaminated with PPCPs. The results also show that fungi and bacteria are the most frequently studied microorganisms, with the latter being more easily implanted in complex biotechnological systems (78% of bacterial manuscripts vs. 40% fungi). A total of 52 works has been published while using microalgae and only in 7% of them, these organisms were used on a large scale. Special emphasis is made on the advantages that are provided by biotechnological systems in series, as well as on the need for eco-toxicological control that is associated with any process of recovery of contaminated systems.
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Evaluation of daily and seasonal variations in a semi-closed photobioreactor for microalgae-based bioremediation of agricultural runoff at full-scale. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101859] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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59
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Behera B, Patra S, Balasubramanian P. Biological nutrient recovery from human urine by enriching mixed microalgal consortium for biodiesel production. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2020; 260:110111. [PMID: 32090822 DOI: 10.1016/j.jenvman.2020.110111] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 12/10/2019] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
Utilization of waste resources is necessary to harness the long-term sustainability of algal technology. The study focused on the use of human urine as the basic nutrient source for culturing native microalgal consortium and further optimized the process parameters using response surface methodology. A full factorial, central composite rotatable design (CCRD) with three variables: urine concentration (1-10% vol of urine/vol of distil water [%v/v]), pH (6.5-9) and light intensity (50-350 μmolphotonsm-2sec-1) was used to evaluate the microalgal biomass and lipid content. Results indicated that at 95% confidence limits, the selected factors influence the biomass and lipid productivity. The maximum biomass productivity of 211.63 ± 1.40 mg l-1 d-1 was obtained under optimized conditions with 6.50% v/v of urine, pH of 7.69 and at light intensity of 205.40 μmolphotonsm-2sec-1. The lipid content was found to increase from 18.96 ± 1.30% in control media to 26.27 ± 1.94% under optimal conditions. The interactive effect of variables over the microalgal biomass and lipid content has also been elucidated. The data obtained were comparable to the BG11 media (control). Optimized diluted urine media in the presence of ammonium ions and under limited nitrate showed better lipid yields. Significant lipid biomolecules were detected in the algal oil extracts obtained from the diluted urine media characterized by Fourier transform infrared spectroscopy (FTIR) and Nuclear magnetic resonance (NMR). Gas chromatography-mass spectrometry (GCMS) revealed the presence of several monounsaturated and polyunsaturated fatty acids in the transesterified algal oil. Such studies would aid in technically realizing the field scale cultivation of microalgae for biofuels.
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Affiliation(s)
- Bunushree Behera
- Agricultural & Environmental Biotechnology Group, Department of Biotechnology & Medical Engineering, National Institute of Technology Rourkela, Odisha, India
| | - Sandip Patra
- Agricultural & Environmental Biotechnology Group, Department of Biotechnology & Medical Engineering, National Institute of Technology Rourkela, Odisha, India
| | - P Balasubramanian
- Agricultural & Environmental Biotechnology Group, Department of Biotechnology & Medical Engineering, National Institute of Technology Rourkela, Odisha, India.
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60
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Integration of Microalgae Cultivation in a Biogas Production Process from Organic Municipal Solid Waste: From Laboratory to Pilot Scale. CHEMENGINEERING 2020. [DOI: 10.3390/chemengineering4020025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
In this study, the feasibility of integrating microalgae cultivation in a biogas production process that treats the organic fraction of municipal solid waste (OFMSW) was investigated. In particular, the biomass growth performances in the liquid fraction of the digestate, characterized by high ammonia concentrations and turbidity, were assessed together with the nutrient removal efficiency. Preliminary laboratory-scale experiments were first carried out in photobioreactors operating in a continuous mode (Continuous-flow Stirred-Tank Reactor, CSTR), to gain preliminary data aimed at aiding the subsequent scaling up to a pilot scale facility. An outdoor experimental campaign, operated from July to October 2019, was then performed in a pilot scale raceway pond (4.5 m2), located in Arzignano (VI), Italy, to assess the performances under real environmental conditions. The results show that microalgae could grow well in this complex substrate, although dilution was necessary to enhance light penetration in the culture. In outdoor conditions, nitrification by autotrophic bacteria appeared to be significant, while the photosynthetic nitrogen removal was around 12% with respect to the inlet. On the other hand, phosphorus was almost completely removed from the medium under all the conditions tested, and a biomass production between 2–7 g m−2 d−1 was obtained.
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61
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Wu L, Qian L, Deng Z, Zhou X, Li B, Lan S, Yang L, Zhang Z. Temperature modulating sand-consolidating cyanobacterial biomass, nutrients removal and bacterial community dynamics in municipal wastewater. BIORESOURCE TECHNOLOGY 2020; 301:122758. [PMID: 31986373 DOI: 10.1016/j.biortech.2020.122758] [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: 11/17/2019] [Revised: 12/31/2019] [Accepted: 01/03/2020] [Indexed: 06/10/2023]
Abstract
Cultivating sand-consolidating cyanobacteria using wastewater has unique advantages on both nutrients recycling and ecological restoration by transferring excessive nutrients from wastewaters to desert areas. Although previous study showed that sand-consolidating cyanobacterium well adapted to synthetic domestic wastewater, no study has been carried out on actual wastewater. This study aims to investigate the sand-consolidating cyanobacterial biomass production and nutrients removal by cultivating Scytonema hyalinum in the municipal wastewater under different temperatures. The results showed that biomass accumulation increased with temperature from 20 ℃ to 30 ℃, while severely depressed at 35 ℃. More than 81.63% sCOD, 90.64% TDN and 97.08% TDP were removed by day 30 under each temperature except for 35℃. The inoculation of S. hyalinum strongly regulated the native wastewater bacterial community. These results indicated that sand-consolidating cyanobacterium S. hyalinum well adapted to municipal wastewater and temperature had remarkable effects on cyanobacterial biomass accumulation, nutrients removal and wastewater native bacterial community dynamics.
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Affiliation(s)
- Li Wu
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430072, China
| | - Long Qian
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430072, China
| | - Zhikang Deng
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430072, China
| | - Xiaolong Zhou
- Institute of Arid Ecology and Environment, Xinjiang University, Urumqi, Xinjiang 830046, China
| | - Bolin Li
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430072, China
| | - Shubin Lan
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Lie Yang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430072, China
| | - Zulin Zhang
- Hubei Key Laboratory of Mineral Resources Processing and Environment, School of Resources and Environmental Engineering, State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430072, China; The James Hutton Institute, Craigiebuckler, Aberdeen ABI5 8QH, UK.
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62
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Lee H, Jeong D, Im S, Jang A. Optimization of alginate bead size immobilized with Chlorella vulgaris and Chlamydomonas reinhardtii for nutrient removal. BIORESOURCE TECHNOLOGY 2020; 302:122891. [PMID: 32008861 DOI: 10.1016/j.biortech.2020.122891] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 06/10/2023]
Abstract
Photo-bioreactor experiments using three different size beads (2.0, 3.5, and 5.0 mm) immobilized with two different types of microalgae namely Chlorella vulgaris and Chlamydomonas reinhardtii were conducted to evaluate the nutrient removal efficiency. The highest nutrient removal was obtained at gel bead pore size of 3.5 mm for both species of C. vulgaris and Ch. reinhardtii. 95% removal of T-N and complete reduction of T-P were achieved within 3 stages of treatment in photo-bioreactors containing 20% algal bead volume fraction. Moreover, the results observed by confocal laser scanning microscopy (CLSM) using SYTOX red dye and SYTOX green dye in alginate beads indicated that the effective depth of C. vulgaris and Ch. reinhardtii was about 3.6 mm and 3.0 mm, respectively. This optimized cell immobilization technology would accelerate the nutrient uptake rate of microalgae for improving efficiency of wastewater treatment systems.
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Affiliation(s)
- Hyunkuk Lee
- Graduate School of Water Resources, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746, Republic of Korea
| | - Dawoon Jeong
- Graduate School of Water Resources, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746, Republic of Korea; Institute of Environmental Research, Kangwon National University, 1, Gangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Republic of Korea
| | - SungJu Im
- Graduate School of Water Resources, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746, Republic of Korea
| | - Am Jang
- Graduate School of Water Resources, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 440-746, Republic of Korea.
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Abstract
Continual increases in the human population and growing concerns related to the energy crisis, food security, disease outbreaks, global warming, and other environmental issues require a sustainable solution from nature. One of the promising resources is cyanobacteria, also known as blue-green algae. They require simple ingredients to grow and possess a relatively simple genome. Cyanobacteria are known to produce a wide variety of bioactive compounds. In addition, cyanobacteria’s remarkable growth rate enables its potential use in a wide range of applications in the fields of bioenergy, biotechnology, natural products, medicine, agriculture, and the environment. In this review, we have summarized the potential applications of cyanobacteria in different areas of science and development, especially related to their use in producing biofuels and other valuable co-products. We have also discussed the challenges that hinder such development at an industrial level and ways to overcome such obstacles.
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64
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Liu N, Zhang H, Zhao J, Xu Y, Ge F. Mechanisms of cetyltrimethyl ammonium chloride-induced toxicity to photosystem II oxygen evolution complex of Chlorella vulgaris F1068. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121063. [PMID: 31539660 DOI: 10.1016/j.jhazmat.2019.121063] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 08/05/2019] [Accepted: 08/20/2019] [Indexed: 06/10/2023]
Abstract
Microalgae photosynthesis is sensitive to coexisted contaminates in aquatic environment, thereby causes adverse effect on algal growth and nutrients uptake. Here, we investigated the photosynthetic toxicity mechanism of cetyltrimethyl ammonium chloride (CTAC)-induced on a green microalga Chlorella vulgaris F1068 (C. vulgaris F1068). Results showed that CTAC reduced the algal growth rate, nutrients removal efficiency and weakened the photosynthetic performance. Meanwhile, the efficiency of oxygen evolution complex (OEC) and oxygen evolvement rates stressed by CTAC were significantly declined to 90.48% and 58.48% of the control (without CTAC), respectively. In addition, atomic force microscopy (AFM) detected the damage of PSII-OEC morphology and structure by CTAC. Furthermore, proteomic analysis showed that 41% of proteins were in the chloroplast thylakoid membranes which function in photosynthesis. The activity of oxygen-evolving enhancer protein 2 (OEE2 or PsbP) involved in electron transfer was significantly inhibited by CTAC, which down-regulated 15.14-fold in the presence of 0.6 mg/L CTAC. These results indicated that photosynthetic inhibition of CTAC mainly occurred in the PSII-OEC. This study provided a new perspective of the photosynthetic response in evaluation of environmental bioimpacts of surfactants on microalgae.
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Affiliation(s)
- Na Liu
- College of Environment and Resource, Xiangtan University, Xiangtan, 411105, PR China
| | - Han Zhang
- College of Environment and Resource, Xiangtan University, Xiangtan, 411105, PR China
| | - Jinfeng Zhao
- College of Environment and Resource, Xiangtan University, Xiangtan, 411105, PR China
| | - Yin Xu
- College of Environment and Resource, Xiangtan University, Xiangtan, 411105, PR China
| | - Fei Ge
- College of Environment and Resource, Xiangtan University, Xiangtan, 411105, PR China.
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65
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Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater. Molecules 2020; 25:molecules25030664. [PMID: 32033149 PMCID: PMC7037087 DOI: 10.3390/molecules25030664] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 01/22/2020] [Accepted: 02/02/2020] [Indexed: 11/16/2022] Open
Abstract
Microalgae are microorganisms with the capacity to contribute to the sustainable and healthy food production, in addition to wastewater treatment. The subject of this work was to determine the potential of Scenedesmus obliquus microalga grown in brewery wastewater to act as a plant biostimulant. The germination index of watercress seeds, as well as the auxin-like activity in mung bean and cucumber, and in the cytokinin-like activity in cucumber bioassays were used to evaluate the biostimulant potential. Several biomass processes were studied, such as centrifugation, ultrasonication and enzymatic hydrolysis, as well as the final concentration of microalgal extracts to determine their influence in the biostimulant activity of the Scenedesmus biomass. The results showed an increase of 40% on the germination index when using the biomass at 0.1 g/L, without any pre-treatment. For auxin-like activity, the best results (up to 60% with respect to control) were obtained at 0.5 g/L of biomass extract, after a combination of cell disruption, enzymatic hydrolysis and centrifugation. For cytokinin-like activity, the best results (up to 187.5% with respect to control) were achieved without cell disruption, after enzymatic hydrolysis and centrifugation at a biomass extract concentration of 2 g/L.
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66
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Unsterilized sewage treatment and carbohydrate accumulation in Tetradesmus obliquus PF3 with CO2 supplementation. ALGAL RES 2020. [DOI: 10.1016/j.algal.2019.101741] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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67
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Ben Ouada S, Ben Ali R, Cimetiere N, Leboulanger C, Ben Ouada H, Sayadi S. Biodegradation of diclofenac by two green microalgae: Picocystis sp. and Graesiella sp. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 186:109769. [PMID: 31614298 DOI: 10.1016/j.ecoenv.2019.109769] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 09/30/2019] [Accepted: 10/04/2019] [Indexed: 05/22/2023]
Abstract
The aim of the present study was to provide an integrated view of algal removal of diclofenac (DCF). Two isolated microalgal strains Picocystis sp. and Graesiella sp. were cultivated under different DCF concentrations and their growth, photosynthetic activity and diclofenac removal efficiency were monitored. Results showed that DCF had slight inhibitory effects on the microalgal growth which did not exceed 21% for Picocystis and 36% for Graesiella after 5 days. Both species showed different patterns in terms of removal efficiency. In presence of Picocystis sp., the amounts of removed DCF were up to 73%, 43% and 25% of 25, 50 and 100 mg L-1 respectively; whereas only 52%, 28% and 24% were removed in the presence of Graesiella at same DCF tested concentrations. DCF removal was insured mainly by biodegradation. To better reveal the mechanism involved, metabolites analyses were performed. Two DCF biodegradation/biotransformation products were detected in presence of Picocystis. This study indicated that Picocystis performed a satisfactory growth capacity and DCF removal efficiency and thus could be used for treatment of DCF contaminated aqueous systems.
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Affiliation(s)
- Sabrine Ben Ouada
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, BP 1177, 3018, Sfax, Tunisia; Laboratory of Blue Biotechnology and Aquatic Bioproducts, National Institute of Marine Sciences and Technologies, 5000, Monastir, Tunisia; UMR 9190 MARBEC (IRD - Université de Montpellier - CNRS - IFREMER), CS30171, 34203, Sète, France.
| | - Rihab Ben Ali
- Laboratory of Blue Biotechnology and Aquatic Bioproducts, National Institute of Marine Sciences and Technologies, 5000, Monastir, Tunisia
| | - Nicolas Cimetiere
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, 11 Allée de Beaulieu, CS 50837, 35708, Rennes Cedex 7, France
| | - Christophe Leboulanger
- UMR 9190 MARBEC (IRD - Université de Montpellier - CNRS - IFREMER), CS30171, 34203, Sète, France
| | - Hatem Ben Ouada
- Laboratory of Blue Biotechnology and Aquatic Bioproducts, National Institute of Marine Sciences and Technologies, 5000, Monastir, Tunisia
| | - Sami Sayadi
- Laboratory of Environmental Bioprocesses, Center of Biotechnology of Sfax, BP 1177, 3018, Sfax, Tunisia; Center for Sustainable Development, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar
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68
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Lee YJ, Lei Z. Microalgal-bacterial aggregates for wastewater treatment: A mini-review. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.biteb.2019.100199] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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69
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Volpin F, Yu H, Cho J, Lee C, Phuntsho S, Ghaffour N, Vrouwenvelder JS, Shon HK. Human urine as a forward osmosis draw solution for the application of microalgae dewatering. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120724. [PMID: 31326765 DOI: 10.1016/j.jhazmat.2019.06.001] [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: 01/07/2019] [Revised: 05/31/2019] [Accepted: 06/02/2019] [Indexed: 06/10/2023]
Abstract
Human urine is a unique solution that has the right composition to constitute both a severe environmental threat and a rich source of nitrogen and phosphorous. In fact, between 4-9% of urine mass consists of ions, such as K+, Cl-, Na+ or NH4+. Because of its high ionic strength, urine osmotic pressure can reach values of up to 2000 kPa. With this in mind, this work aimed to study the effectiveness of real urine as a novel draw solution for forward osmosis. Water flux, reverse nitrogen flux and membrane fouling were investigated using fresh or hydrolysed urine. Water flux as high as 16.7 ± 1.1 L m-2 h-1 was recorded using real hydrolysed urine. Additionally, no support layer membrane fouling was noticed in over 20 h of experimentation. Urine was also employed to dewater a Chlorella vulgaris culture. A fourfold increase in algal concentration was achieved while having an average flux of 14.1 L m-2 h-1. During the algae dewatering, a flux decrease of about 19% was noticed; this was mainly due to a thin layer of algal deposition on the active side of the membrane. Overall, human urine was found to be an effective draw solution for forward osmosis.
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Affiliation(s)
- Federico Volpin
- School of Civil and Environmental Engineering, University of Technology Sydney (UTS), City Campus, Broadway, NSW 2007, Australia
| | - Hyeonjung Yu
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan 44919, Republic of Korea
| | - Jaeweon Cho
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan 44919, Republic of Korea
| | - Changsoo Lee
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan 44919, Republic of Korea
| | - Sherub Phuntsho
- School of Civil and Environmental Engineering, University of Technology Sydney (UTS), City Campus, Broadway, NSW 2007, Australia
| | - Noreddine Ghaffour
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological & Environmental Science & Engineering Division (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Johannes S Vrouwenvelder
- King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Center (WDRC), Biological & Environmental Science & Engineering Division (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Ho Kyong Shon
- School of Civil and Environmental Engineering, University of Technology Sydney (UTS), City Campus, Broadway, NSW 2007, Australia.
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70
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Slompo NDM, Quartaroli L, Zeeman G, da Silva GHR, Daniel LA. Black water treatment by an upflow anaerobic sludge blanket (UASB) reactor: a pilot study. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 80:1505-1511. [PMID: 31961813 DOI: 10.2166/wst.2019.402] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Decentralized sanitary wastewater treatment has become a viable and sustainable alternative, especially for developing countries and small communities. Besides, effluents may present variations in chemical oxygen demand (COD), biochemical oxygen demand (BOD) and total nitrogen values. This study describes the feasibility of using a pilot upflow anaerobic sludge blanket (UASB) reactor to treat wastewater with different organic loads (COD), using black water (BW) and sanitary wastewater, in addition to its potential for preserving nutrients for later recovery and/or reuse. The UASB reactor was operated continuously for 95 weeks, with a hydraulic retention time of 3 days. In Phase 1, the reactor treated simulated BW and achieved 77% CODtotal removal. In Phase 2, treating only sanitary wastewater, the CODtotal removal efficiency was 60%. Phase 3 treated simulated BW again, and CODtotal removal efficiency was somewhat higher than in Phase 1, reaching 81%. In Phase 3, the removal of pathogens was also evaluated: the efficiency was 1.96 log for Escherichia coli and 2.13 log for total coliforms. The UASB reactor was able to withstand large variations in the organic loading rate (0.09-1.49 kg COD m-3 d-1), in continuous operation mode, maintaining a stable organic matter removal.
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Affiliation(s)
- Nathalie Dyane Miranda Slompo
- Department of Hydraulics and Sanitation, University of São Paulo (EESC-USP), 400 Trabalhador São Carlense Avenue, São Carlos, São Paulo 13566-590, Brazil E-mail:
| | - Larissa Quartaroli
- Department of Environmental and Civil Engineering, University of São Paulo State (FEB-UNESP), 14-01 'Engenheiro Luiz Edmundo Carrijo Coube' Avenue, Bauru, São Paulo 17033-360, Brazil
| | | | - Gustavo Henrique Ribeiro da Silva
- Department of Environmental and Civil Engineering, University of São Paulo State (FEB-UNESP), 14-01 'Engenheiro Luiz Edmundo Carrijo Coube' Avenue, Bauru, São Paulo 17033-360, Brazil
| | - Luiz Antonio Daniel
- Department of Hydraulics and Sanitation, University of São Paulo (EESC-USP), 400 Trabalhador São Carlense Avenue, São Carlos, São Paulo 13566-590, Brazil E-mail:
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71
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Acetaminophen Removal from Water by Microalgae and Effluent Toxicity Assessment by the Zebrafish Embryo Bioassay. WATER 2019. [DOI: 10.3390/w11091929] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In this work, zebrafish embryo bioassays were performed to assess the efficiency of microalgae in the removal of acetaminophen from water. Chlorella sorokiniana (CS), Chlorella vulgaris (CV) and Scenedesmus obliquus (SO) were the strains used for water treatment. Toxic effects on zebrafish embryo caused by effluents from microalgae treatment were compared with those observed under exposure to experimental solutions with known concentrations of acetaminophen. The three microalgae strains allowed for the reduction of acetaminophen concentration and its toxic effects, but CS was the most efficient one. At the end of the batch culture, a 67% removal was provided by CS with a reduction of 62% in the total abnormalities on the exposed zebrafish embryo. On the other hand, toxic effects observed under exposure to effluents treated by microalgae were alike to those determined for acetaminophen experimental solutions with equivalent concentration. Thus, it may be inferred that microalgae biodegradation of acetaminophen did not involve an increased toxicity for zebrafish embryo.
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72
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Biological manipulation of eutrophication in West Yangchen Lake. AQUACULTURE AND FISHERIES 2019. [DOI: 10.1016/j.aaf.2019.03.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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73
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Ashok V, Shriwastav A, Bose P, Gupta SK. Phycoremediation of wastewater using algal-bacterial photobioreactor: Effect of nutrient load and light intensity. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.biteb.2019.100205] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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74
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Zhao W, Zheng Z, Zhang J, Roger SF, Luo X. Evaluation of the use of eucalyptus to control algae bloom and improve water quality. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 667:412-418. [PMID: 30833239 DOI: 10.1016/j.scitotenv.2019.02.276] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 02/17/2019] [Accepted: 02/17/2019] [Indexed: 06/09/2023]
Abstract
Lakes represent an important source of drinking water resource for human beings. The presence of harmful algae blooms can pose a serious threat to lakes water quality. This study explored the feasibility of using eucalyptus plants and leaves extracts for controlling algae proliferation in an aquatic milieu. After 30 days of treatment, the inhibitory efficiencies were 85.8% and 20.9% for treatments planting eucalyptus and eucalyptus leaves extracts, respectively. The synergistic effects of allelopathy and competitive absorption for macro nutrients were attributed to the effective control of algae proliferation in the mesocosm systems. Moreover, the analysis of microbial community structures indicated that eucalyptus plants or leaves extracts had no adverse effect on species diversity and their relative abundance. The choice of using eucalyptus to control algae bloom will be dictated by environmental and economic considerations within a geographical region.
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Affiliation(s)
- Wei Zhao
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China
| | - Zheng Zheng
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China.
| | - JunLei Zhang
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China
| | - Saint-Fort Roger
- Department of Environmental Science, Mount Royal University, Calgary, AB T3E 6K6, Canada
| | - XingZhang Luo
- Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, PR China
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75
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Fasciotti M, Souza GHMF, Astarita G, Costa ICR, Monteiro TVC, Teixeira CMLL, Eberlin MN, Sarpal AS. Investigating the Potential of Ion Mobility-Mass Spectrometry for Microalgae Biomass Characterization. Anal Chem 2019; 91:9266-9276. [DOI: 10.1021/acs.analchem.9b02172] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Maíra Fasciotti
- National Institute of Metrology, Quality and Technology (INMETRO), Division of Chemical and Thermal Metrology, Laboratory of Organic Analysis, 25250-020, Duque de Caxias, Rio de Janeiro, Brazil
- ThoMSon Mass Spectrometry Laboratory, Institute of Chemistry, University of Campinas − UNICAMP, 13083-970 Campinas, São Paulo, Brazil
| | - Gustavo H. M. F. Souza
- MS Applications and Development Laboratory, Waters Corporation, 06455-000 Barueri, São Paulo, Brazil
| | - Giuseppe Astarita
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University, Washington DC 20007, United States
| | - Ingrid C. R. Costa
- National Institute of Metrology, Quality and Technology (INMETRO), Division of Chemical and Thermal Metrology, Laboratory of Organic Analysis, 25250-020, Duque de Caxias, Rio de Janeiro, Brazil
| | - Thays. V. C. Monteiro
- National Institute of Metrology, Quality and Technology (INMETRO), Division of Chemical and Thermal Metrology, Laboratory of Organic Analysis, 25250-020, Duque de Caxias, Rio de Janeiro, Brazil
| | - Claudia M. L. L. Teixeira
- Microalgal Biotechnology Laboratory, National Institute of Technology (INT), 20081-312 Rio de Janeiro, Rio de Janeiro, Brazil
| | - Marcos N. Eberlin
- Mackenzie Presbyterian University, School of Engineering, 01302-907 São Paulo, São Paulo, Brazil
| | - Amarijt S. Sarpal
- National Institute of Metrology, Quality and Technology (INMETRO), Division of Chemical and Thermal Metrology, Laboratory of Organic Analysis, 25250-020, Duque de Caxias, Rio de Janeiro, Brazil
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76
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Inhibition of Photosynthetic Activity in Wastewater-Borne Microalgal–Bacterial Consortia under Various Light Conditions. SUSTAINABILITY 2019. [DOI: 10.3390/su11102951] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Microalgal–bacterial consortia are considered an alternative method to conventional wastewater treatment processes with several benefits, such as low oxygen production cost and reduced emission of carbon dioxide resulting from photosynthetic activity. Besides, microalgae effectively remove various emerging contaminants and heavy metals that are hardly removed by conventional wastewater treatment processes. The purpose of this study is finding optimal operation conditions (e.g., light wavelengths, light intensity, microalgal–bacterial consortia biomass) when applying microalgae in wastewater treatment system. Firstly, reduced transmittance was monitored at four different wavelengths (i.e., blue, green, red, and white light) and at various concentrations of microalgal–bacterial consortia. Light transmittance rates were rapidly reduced as the biomass increased, where the highest transmittance was observed in green light. Secondly, the reduction of oxygen production over time, by the inhibition of the photosynthetic activity, was tested as the light intensity increased at four different wavelengths and at low (100 mg L−1) and high (500 mg L−1) concentrations of microalgal–bacterial consortia. The observations and subsequent statistical analyses verify that microalgal–bacterial consortia show the strongest resistance to the inhibition of the photosynthetic activity in green light, with white coming next, when the intensity of light is increased.
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77
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Tolboom SN, Carrillo-Nieves D, de Jesús Rostro-Alanis M, de la Cruz Quiroz R, Barceló D, Iqbal HMN, Parra-Saldivar R. Algal-based removal strategies for hazardous contaminants from the environment - A review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 665:358-366. [PMID: 30772566 DOI: 10.1016/j.scitotenv.2019.02.129] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 02/02/2019] [Accepted: 02/08/2019] [Indexed: 02/05/2023]
Abstract
Owing to the controlled or uncontrolled industrial wastewater disposal, pharmaceutical-based hazardous emerging contaminants (ECs) can be found in the environment all over the world. With ever-increasing socioeconomic aspects and environmental awareness, people are now more concerns about the widespread occurrences of hazardous and persistent contaminants, around the globe. In this context, several studies have already shown that various types of emerging and/or re-emerging contaminants, regardless the source, type and concentration, are of supreme threat to the living system of flora and fauna. Recently, algae-based bioreactors have gained special research interest as a promising way to remove pharmaceuticals-based ECs from the wastewater either partially or completely. This paper covers the progress on the removal of selected pharmaceuticals using bioreactors. In laboratory scale studies, high removal percentages have been reached for most selected pharmaceuticals, but data on full-scale bioreactors is limited. In this paper, two types of bioreactors are discussed, i.e., (1) open pond and (2) bubble column photobioreactor, which are considered sustainable and an effective alternative to remove ECs. In these bioreactors, high removal percentages (>90%) have been found for metoprolol, triclosan, and salicylic acid, moderate (50-90%) for carbamazepine and tramadol and very low (<10%) for trimethoprim and ciprofloxacin by inoculating different microalgae. This technique may open new opportunities for the treatment of wastewater and reduce the environmental pollution that can have adverse effects on the ecosystem and human health. In summary, the present review focuses on the microalgae for wastewater remediation. An effort has also been made to describe the generalities of the photobioreactor.
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Affiliation(s)
- Stefan Noël Tolboom
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N. L. CP 64849, Mexico
| | - Danay Carrillo-Nieves
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N. L. CP 64849, Mexico
| | - Magdalena de Jesús Rostro-Alanis
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N. L. CP 64849, Mexico
| | - Reynaldo de la Cruz Quiroz
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N. L. CP 64849, Mexico
| | - Damià Barceló
- ICRA, Catalan Institute for Water Research, Parc Científic i Tecnològic de la Universitat de Girona, C/ Emili Grahit, 101, 17003 Girona, Spain
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N. L. CP 64849, Mexico.
| | - Roberto Parra-Saldivar
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N. L. CP 64849, Mexico.
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78
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Chandra R, Iqbal HMN, Vishal G, Lee HS, Nagra S. Algal biorefinery: A sustainable approach to valorize algal-based biomass towards multiple product recovery. BIORESOURCE TECHNOLOGY 2019; 278:346-359. [PMID: 30718075 DOI: 10.1016/j.biortech.2019.01.104] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 01/21/2019] [Accepted: 01/22/2019] [Indexed: 02/08/2023]
Abstract
In recent years, ever-increasing socio-economic awareness, and negative impact of excessive petro consumption have redirected the research interests towards bio-resources such as algal-based biomass. In order to meet current bio-economy challenges to produce high-value multiple products at a time, new integrated processes in research and development are necessary. Though various strategies have been posited for conversion of algal-based biomass to fuel and fine chemicals, none of them has been proved as economically viable and energetically feasible. Therefore, a range of other bio-products needs to be pursued. In this context, the algal bio-refinery concept has appeared with notable solution to recover multiple products from a single operation process. Herein, an algal-based bio-refinery platform for fuel, food, and pharmaceuticals considering Bio-refinery Complexity Index (BCI) has been evaluated, as an indicator of techno-economic risks. This review presents recent developments on algal-biomass utilization for various value-added products as part of an integrated bio-refinery.
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Affiliation(s)
- Rashmi Chandra
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N.L., CP 64849, Mexico; Tecnologico de Monterrey, School of Engineering and Science, Campus Toluca, Ave. Eduardo Monroy Cárdenas 2000, Toluca, State of Mexico CP 50110, Mexico; Biodesign Swette Center of Environmental Biotechnology, Arizona State University, Tempe, AZ 85287-5701, USA.
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N.L., CP 64849, Mexico
| | - Garima Vishal
- Department of Chemical Engineering, Indian Institute of Technology, Hauz Khas, New Delhi, Delhi 110016, India
| | - Hyung-Sool Lee
- Civil & Environmental Engineering, University of Waterloo, 200 University Ave W, Waterloo, ON N2L 3G1, Canada
| | - Sunil Nagra
- Aavesh Green Sustainability Solutions S. De R. L. De. C. V. Monterrey, N.L. 64821, Mexico
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79
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Zhang Y, Zhao Y, Zhou M. A photosynthetic algal microbial fuel cell for treating swine wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:6182-6190. [PMID: 30617897 DOI: 10.1007/s11356-018-3960-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 12/07/2018] [Indexed: 06/09/2023]
Abstract
A photosynthetic algal (Chlorella vulgaris) microbial fuel cell (PAMFC) with double chambers was adopted for power production and removal of carbon and nitrogen in swine sewerage that could provide nutrients for the growth of C. vulgaris. C. vulgaris was expected to utilize carbon dioxide (CO2) delivered from the anode chamber and generate oxygen as an electron acceptor by photosynthesis. PAMFC presented a maximum voltage output of 0.747 V and a maximum power density of 3720 mW/m3 at 240 h, much higher than that of the standalone MFC. 85.6%, 70.2%, and 93.9% removal of ammonia nitrogen, total nitrogen (TN), and total organic carbon (TOC), respectively, were obtained in the anode chamber of the PAMFC system, while the corresponding removal in MFC was 83.1%, 56.0%, and 87.2%, respectively. PAMFC also presented a much higher removal of ammonia nitrogen (68.7%) in the cathode chamber than MFC (47.5%). The results indicated the superiority of the PAMFC device for carbon and nitrogen removal.
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Affiliation(s)
- Ying Zhang
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
- Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
- Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Yingying Zhao
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
- Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
- Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Minghua Zhou
- Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
- Tianjin Key Laboratory of Urban Ecology Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
- Tianjin Advanced Water Treatment Technology International Joint Research Center, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
- Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China.
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80
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Symbiotic Co-Culture of Scenedesmus sp. and Azospirillum brasilense on N-Deficient Media with Biomass Production for Biofuels. SUSTAINABILITY 2019. [DOI: 10.3390/su11030707] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The treatment of nitrogen-deficient agriculture wastewater, arising from the vegetable and fruit processing, is a significant problem that limits the efficiency of its biological treatment. This study evaluates the effectiveness of the symbiotic co-culture of Azospirillum brasilense and Scenedesmus sp., under two nitrogen levels (8.23 mg L−1 and 41.17 mg L−1) and mixing systems (aeration and magnetic stirring), aiming to simultaneously use the N-deficient media for their growth while producing biomass for biofuels. Microalgae growth and biomass composition, in terms of protein, carbohydrate and fatty acid contents, were evaluated at the end of the exponential growth phase (15 days after inoculation). Results show that the symbiotic co-culture of microalgae-bacteria can be effectively performed on nitrogen-deficient media and has the potential to enhance microalgae colony size and the fatty acid content of biomass for biofuels. The highest biomass concentration (103 ± 2 mg·L−1) was obtained under aeration, with low nitrogen concentration, in the presence of A. brasilense. In particular, aeration contributed to, on average, a higher fatty acid content (48 ± 7% dry weight (DW)) and higher colony size (164 ± 21 µm2) than mechanical stirring (with 39 ± 2% DW and 134 ± 21 µm2, respectively) because aeration contribute to better mass transfer of gases in the culture. Also, co-culturing contributed in average, to higher colony size (155 ± 21 µm2) than without A. brasilense (143 ± 21 µm2). Moreover, using nitrogen deficient wastewater as the culture media can contribute to decrease nitrogen and energy inputs. Additionally, A. brasilense is approved and already extensively used in agriculture and wastewater treatment, without known environmental or health issues, simplifying the biomass processing for the desired application.
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81
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Winkler MK, Straka L. New directions in biological nitrogen removal and recovery from wastewater. Curr Opin Biotechnol 2019; 57:50-55. [PMID: 30708205 DOI: 10.1016/j.copbio.2018.12.007] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 11/27/2018] [Accepted: 12/16/2018] [Indexed: 11/29/2022]
Abstract
This review summarizes strategies for biological nitrogen removal (BNR) and recovery from wastewater. The most commonly used BNR technology nitrification/denitrification is also the most energy intensive, even though there are lower energy options, including nitritation/denitritation and more efficient partial nitritation/Anammox; the latter is well demonstrated for side-stream treatment and progressing toward mainstream applications. Nitrogen recovery can be done through cell assimilation with phototrophs, but bottlenecks with solids separation and space requirements limit applications to tertiary treatment. Whereas, microbial electrochemical cells are energy efficient at recovering nitrogen from side streams, but not capable of achieving low effluent levels. The combined strengths of these emerging approaches will improve wastewater nitrogen removal by reducing energy consumption, minimizing effluent nitrogen, and maximizing nitrogen recovery.
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Affiliation(s)
- Mari Kh Winkler
- Department of Civil and Environmental Engineering, University of Washington, 201 More Hall, Box 352700, Seattle, WA 98195-2700, USA.
| | - Levi Straka
- Department of Civil and Environmental Engineering, University of Washington, 201 More Hall, Box 352700, Seattle, WA 98195-2700, USA
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82
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Echeverri D, Romo J, Giraldo N, Atehortúa L. Microalgae protoplasts isolation and fusion for biotechnology research. REVISTA COLOMBIANA DE BIOTECNOLOGÍA 2019. [DOI: 10.15446/rev.colomb.biote.v21n1.80248] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Protoplasts are microbial or vegetable cells lacking a cell wall. These can be obtained from microalgae by an enzymatic hydrolysis process in the presence of an osmotic stabilizer. In general, protoplasts are experimentally useful in physiological, geneticand bio-chemical studies, so their acquisition and fusion will continue to be an active research area in modern biotechnology. The fusion of protoplasts in microalgae constitutes a tool for strain improvement because it allows both intra and interspecific genetic recombina-tion, resulting in organisms with new or improved characteristics of industrial interest. In this review we briefly describe themethod-ology for obtaining protoplasts, as well as fusion methods and the main applications of microalgal platforms.
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83
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Nguyen TDP, Le TVA, Show PL, Nguyen TT, Tran MH, Tran TNT, Lee SY. Bioflocculation formation of microalgae-bacteria in enhancing microalgae harvesting and nutrient removal from wastewater effluent. BIORESOURCE TECHNOLOGY 2019; 272:34-39. [PMID: 30308405 DOI: 10.1016/j.biortech.2018.09.146] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Revised: 09/28/2018] [Accepted: 09/30/2018] [Indexed: 06/08/2023]
Abstract
Microalgal bacterial flocs can be a promising approach for microalgae harvesting and wastewater treatment. The present study provides an insight on the bioflocs formation to enhance harvesting of Chlorella vulgaris and the removal of nutrients from seafood wastewater effluent. The results showed that the untreated seafood wastewater was the optimal culture medium for the cultivation and bioflocculation of C. vulgaris, with the flocculating activity of 92.0 ± 6.0%, total suspended solids removal of 93.0 ± 5.5%, and nutrient removal of 88.0 ± 2.2%. The bioflocs collected under this optimal condition contained dry matter of 107.2 ± 5.6 g·L-1 and chlorophyll content of 25.5 ± 0.2 mg·L-1. The results were promising when compared to those obtained from the auto-flocculation process that induced by the addition of calcium chloride and pH adjustment. Additionally, bacteria present in the wastewater aided to promote the formation of bioflocculation process.
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Affiliation(s)
- Thi Dong Phuong Nguyen
- University of Technology and Education, University of Danang, 48 Cao Thang St, 550000 Danang, Viet Nam
| | - Thi Van Anh Le
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet St, 10000 Hanoi, Viet Nam
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Engineering, University of Nottingham Malaysia Campus, 43500 Semenyih, Selangor, Malaysia
| | - Thanh Thuy Nguyen
- National Institute of Hygiene and Epidemiology, 01 Yecxanh St, Hanoi, Viet Nam
| | - Minh Hien Tran
- National Institute of Hygiene and Epidemiology, 01 Yecxanh St, Hanoi, Viet Nam
| | - Thi Ngoc Thu Tran
- University of Technology and Education, University of Danang, 48 Cao Thang St, 550000 Danang, Viet Nam
| | - Sze Ying Lee
- Department of Chemical Engineering, Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Sungai Long Campus, Kajang 43000, Selangor, Malaysia.
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84
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Polymer accumulation in mixed cyanobacterial cultures selected under the feast and famine strategy. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.04.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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85
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Ma NL, Aziz A, Teh KY, Lam SS, Cha TS. Metabolites Re-programming and Physiological Changes Induced in Scenedesmus regularis under Nitrate Treatment. Sci Rep 2018; 8:9746. [PMID: 29950688 PMCID: PMC6021428 DOI: 10.1038/s41598-018-27894-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 06/11/2018] [Indexed: 11/12/2022] Open
Abstract
Nitrate is required to maintain the growth and metabolism of plant and animals. Nevertheless, in excess amount such as polluted water, its concentration can be harmful to living organisms such as microalgae. Recently, studies on microalgae response towards nutrient fluctuation are usually limited to lipid accumulation for the production of biofuels, disregarding the other potential of microalgae to be used in wastewater treatments and as source of important metabolites. Our study therefore captures the need to investigate overall metabolite changes via NMR spectroscopy approach coupled with multivariate data to understand the complex molecular process under high (4X) and low (1/4X) concentrations of nitrate (\documentclass[12pt]{minimal}
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\begin{document}$${{\bf{NO}}}_{{\bf{3}}}^{{\boldsymbol{-}}}$$\end{document}NO3−). NMR spectra with the aid of chemometric analysis revealed contrasting metabolites makeup under abundance and limited nitrate treatment. By using NMR technique, 43 types of metabolites and 8 types of fatty acid chains were detected. Nevertheless, only 20 key changes were observed and 16 were down regulated in limited nitrate condition. This paper has demonstrated the feasibility of NMR-based metabolomics approach to study the physiological impact of changing environment such as pollution to the implications for growth and productivity of microalgae population.
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Affiliation(s)
- Nyuk-Ling Ma
- School of Fundamental Science, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia.
| | - Ahmad Aziz
- School of Fundamental Science, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
| | - Kit-Yinn Teh
- Institute of Marine Biotechnology, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
| | - Su Shiung Lam
- Eastern Corridor Renewable Energy Group (ECRE), School of Ocean Engineering, University Malaysia Terengganu, 21030, Kuala Terengganu, Malaysia
| | - Thye-San Cha
- Institute of Marine Biotechnology, Universiti Malaysia Terengganu, Kuala Terengganu, Malaysia
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86
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Chen CY, Chang YH. Engineering strategies for enhancing C. vulgaris ESP-31 lipid production using effluents of coke-making wastewater. J Biosci Bioeng 2018; 125:710-716. [DOI: 10.1016/j.jbiosc.2018.01.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/06/2018] [Accepted: 01/10/2018] [Indexed: 12/15/2022]
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87
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Abinandan S, Subashchandrabose SR, Venkateswarlu K, Megharaj M. Nutrient removal and biomass production: advances in microalgal biotechnology for wastewater treatment. Crit Rev Biotechnol 2018; 38:1244-1260. [PMID: 29768936 DOI: 10.1080/07388551.2018.1472066] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Owing to certain drawbacks, such as energy-intensive operations in conventional modes of wastewater treatment (WWT), there has been an extensive search for alternative strategies in treatment technology. Biological modes for treating wastewaters are one of the finest technologies in terms of economy and efficiency. An integrated biological approach with chemical flocculation is being conventionally practiced in several-sewage and effluent treatment plants around the world. Overwhelming responsiveness to treat wastewaters especially by using microalgae is due to their simplest photosynthetic mechanism and ease of acclimation to various habitats. Microalgal technology, also known as phycoremediation, has been in use for WWT since 1950s. Various strategies for the cultivation of microalgae in WWT systems are evolving faster. However, the availability of innovative approaches for maximizing the treatment efficiency, coupled with biomass productivity, remains the major bottleneck for commercialization of microalgal technology. Investment costs and invasive parameters also delimit the use of microalgae in WWT. This review critically discusses the merits and demerits of microalgal cultivation strategies recently developed for maximum pollutant removal as well as biomass productivity. Also, the potential of algal biofilm technology in pollutant removal, and harvesting the microalgal biomass using different techniques have been highlighted. Finally, an economic assessment of the currently available methods has been made to validate microalgal cultivation in wastewater at the commercial level.
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Affiliation(s)
- Sudharsanam Abinandan
- a Global Centre for Environmental Remediation (GCER), Research and Innovation Division, Faculty of Science , University of Newcastle , Callaghan , Australia
| | - Suresh R Subashchandrabose
- a Global Centre for Environmental Remediation (GCER), Research and Innovation Division, Faculty of Science , University of Newcastle , Callaghan , Australia.,b Cooperative Research Centre for Contamination Assessment and Remediation of Environment (CRC CARE) , University of Newcastle , Callaghan , Australia
| | | | - Mallavarapu Megharaj
- a Global Centre for Environmental Remediation (GCER), Research and Innovation Division, Faculty of Science , University of Newcastle , Callaghan , Australia.,b Cooperative Research Centre for Contamination Assessment and Remediation of Environment (CRC CARE) , University of Newcastle , Callaghan , Australia
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88
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Membrane fouling of forward osmosis in dewatering of soluble algal products: Comparison of TFC and CTA membranes. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2018.02.006] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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89
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Kim HC. Photostimulation of sequential degradation and assimilation of recalcitrant carbonaceous organics in Scenedesmus quadricauda. Process Biochem 2018. [DOI: 10.1016/j.procbio.2017.11.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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90
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Tang CC, Tian Y, Liang H, Zuo W, Wang ZW, Zhang J, He ZW. Enhanced nitrogen and phosphorus removal from domestic wastewater via algae-assisted sequencing batch biofilm reactor. BIORESOURCE TECHNOLOGY 2018; 250:185-190. [PMID: 29172182 DOI: 10.1016/j.biortech.2017.11.028] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 11/06/2017] [Accepted: 11/09/2017] [Indexed: 06/07/2023]
Abstract
This study proposed a potential strategy for enhancement of nutrients removal from domestic wastewater by adding algae to sequencing batch biofilm reactor (SBBR) to form a novel algal-bacterial symbiosis (ABS) system. Results indicated that the algae-assisted SBBR increased the total nitrogen and phosphorus removal efficiencies from 38.5% to 65.8%, and from 31.9% to 89.3%, respectively. The carriers fixed at the top of the reactor were favorable for both formation of ABS system and algae enrichment. The chlorophyll-a increased to 3.59 mg/g at stable stage, which was 4.07 times higher than that in suspension. Moreover, the bio-carrier replacement and sludge discharge were independent, indicating that the sludge and algae retention time could be separated. The mechanisms analysis suggested that the enhanced nitrogen and phosphorus mainly attributed to the enrichment of both algae biomass and total biomass in biofilm. This study highlights the significance of developing ABS system for wastewater treatment.
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Affiliation(s)
- Cong-Cong Tang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Yu Tian
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Heng Liang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Wei Zuo
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Zhen-Wei Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Jun Zhang
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Zhang-Wei He
- State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
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91
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Ni ZY, Li JY, Xiong ZZ, Cheng LH, Xu XH. Role of granular activated carbon in the microalgal cultivation from bacteria contamination. BIORESOURCE TECHNOLOGY 2018; 247:36-43. [PMID: 28946092 DOI: 10.1016/j.biortech.2017.07.079] [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: 05/02/2017] [Revised: 07/13/2017] [Accepted: 07/14/2017] [Indexed: 06/07/2023]
Abstract
Microalgal wastewater treatment has been considered as one of the most promising measures to treat nitrogen and phosphorus in the municipal wastewater. While the municipal wastewater provides sufficient nitrogen and phosphorus for microalgal growth, the microalgae still faces serious biological contamination caused by bacteria in wastewater. In this study, the commercial granular activated carbon (GAC) was added into the simulated municipal wastewater to avoid the influence of bacteria on the growth of microalgae. The extracellular organic matter (EOM) in microalgal broth was then characterized to enlighten the role of GAC in reducing the bioavailability of EOM. The results showed that the GAC addition could increase the dry weight of microalgae from 0.06mgL-1 to 0.46mgL-1 under the condition of bacterial inoculation. The GAC could mitigate bacterial contamination mainly due to its adsorption of both bacteria and EOM that might contain algicidal extracellular substances. Moreover, compared to the control group, the GAC addition could mitigate the microalgal lysis caused by bacteria and thus greatly reduce the bioavailability of EOM from 2.80mgL-1 to 0.61mgL-1, which was beneficial for the improvement of biostability and reuse of effluent after the microalgal harvesting.
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Affiliation(s)
- Zhi-Yi Ni
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Jing-Ya Li
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Zhao-Zhao Xiong
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China
| | - Li-Hua Cheng
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China.
| | - Xin-Hua Xu
- College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, PR China
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92
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Troschl C, Meixner K, Drosg B. Cyanobacterial PHA Production-Review of Recent Advances and a Summary of Three Years' Working Experience Running a Pilot Plant. Bioengineering (Basel) 2017; 4:E26. [PMID: 28952505 PMCID: PMC5590470 DOI: 10.3390/bioengineering4020026] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Revised: 03/15/2017] [Accepted: 03/16/2017] [Indexed: 11/20/2022] Open
Abstract
Cyanobacteria, as photoautotrophic organisms, provide the opportunity to convert CO2 to biomass with light as the sole energy source. Like many other prokaryotes, especially under nutrient deprivation, most cyanobacteria are able to produce polyhydroxyalkanoates (PHAs) as intracellular energy and carbon storage compounds. In contrast to heterotrophic PHA producers, photoautotrophic cyanobacteria do not consume sugars and, therefore, do not depend on agricultural crops, which makes them a green alternative production system. This review summarizes the recent advances in cyanobacterial PHA production. Furthermore, this study reports the working experience with different strains and cultivating conditions in a 200 L pilot plant. The tubular photobioreactor was built at the coal power plant in Dürnrohr, Austria in 2013 for direct utilization of flue gases. The main challenges were the selection of robust production strains, process optimization, and automation, as well as the CO2 availability.
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Affiliation(s)
- Clemens Troschl
- Institute of Environmental Biotechnology, Department of Agrobiotechnology, IFA-Tulln, University of Natural Resources and Life Sciences, Vienna, Tulln 3430, Austria.
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