1
|
van den Berg MF, Botha AM, Bierman A, Oberholster P. Determining biota succession in a domestic wastewater pond system after treatment with a specific consortium microalgae. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2022; 20:963-981. [PMID: 36406598 PMCID: PMC9672295 DOI: 10.1007/s40201-022-00840-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
Wastewater stabilization ponds (WSPs) rely on the metabolic activities of the inhabiting microbiota to treat wastewater. A selected consortium of Chlorella vulgaris and Chlorella protothecoides were used to manipulate the natural resident microalgae assemblage to improve the treatment performance of a domestic wastewater pond treatment system in a coastal region. Since information is lacking about the resulting influence on the composition or succession of the phytoplankton or associated microbiota assemblage, the current study aimed to determine how dosing with the microalgae C. vulgaris and C. protothecoides change the efficiency of wastewater effluent treatment, as well as the composition and succession of the natural occurring phytoplankton and microbial assemblage throughout WSP system. After a year of specific microalgae inoculations, the effluent in part complied with the standards set by the Department of Water Affairs and Forestry (DWAF) and the USA, Environmental Protection Agency (EPA). The cyanobacteria Microcystis aeruginosa dominated the sixth (75%) and seventh pond (97%) before the inoculation with C. vulgaris and C. protothecoide commenced. After 12 inoculation events C. vulgaris and C. protothecoides were dominant in ponds three to seven while the dominant microbial groups were Bacteroidetes, Cyanobacteria, Firmicutes, Planctomycetes, Proteobacteria, Spirochaetes, Synergistetes and Verrucomicrobia. After the microalgae treatment, the WSP effluent were more compliant regarding to the set guidelines for effluent than prior to microalgae treatment. Based on the ability of the C. vulgaris and C. protothecoides to improve the effluent water quality, it was evident that the consortium of microalgae can be use improve domestic wastewater effluent in rural nutrient sensitive catchments. Supplementary Information The online version contains supplementary material available at 10.1007/s40201-022-00840-z.
Collapse
Affiliation(s)
- M. F. van den Berg
- Department of Genetics, University of Stellenbosch, Private Bag X1, Matieland, Stellenbosch, 7601 South Africa
| | - A. M. Botha
- Department of Genetics, University of Stellenbosch, Private Bag X1, Matieland, Stellenbosch, 7601 South Africa
| | - A. Bierman
- Division of Bioinformatics, University of Stellenbosch, Private Bag X1, Matieland, Stellenbosch, 7601 South Africa
| | - P. Oberholster
- Centre for Environmental Management, University of the Free State, Private Bag 339, Bloemfontein, 9300 South Africa
| |
Collapse
|
2
|
Submerged hollow-fiber-ultrafiltration for harvesting microalgae used for bioremediation of a secondary wastewater. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120744] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
3
|
Aparicio S, Serna-García R, Seco A, Ferrer J, Borrás-Falomir L, Robles Á. Global sensitivity and uncertainty analysis of a microalgae model for wastewater treatment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:150504. [PMID: 34583072 DOI: 10.1016/j.scitotenv.2021.150504] [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: 08/04/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 06/13/2023]
Abstract
The results of a global sensitivity and uncertainty analysis of a microalgae model applied to a Membrane Photobioreactor (MPBR) pilot plant were assessed. The main goals of this study were: (I) to identify the sensitivity factors of the model through the Morris screening method, i.e. the most influential factors; (II) to calibrate the influential factors online or offline; and (III) to assess the model's uncertainty. Four experimental periods were evaluated, which encompassed a wide range of environmental and operational conditions. Eleven influential factors (e.g. maximum specific growth rate, light intensity and maximum temperature) were identified in the model from a set of 34 kinetic parameters (input factors). These influential factors were preferably calibrated offline and alternatively online. Offline/online calibration provided a unique set of model factor values that were used to match the model results with experimental data for the four experimental periods. A dynamic optimization of these influential factors was conducted, resulting in an enhanced set of values for each period. Model uncertainty was assessed using the uncertainty bands and three uncertainty indices: p-factor, r-factor and ARIL. Uncertainty was dependent on both the number of influential factors identified in each period and the model output analyzed (i.e. biomass, ammonium and phosphate concentration). The uncertainty results revealed a need to apply offline calibration methods to improve model performance.
Collapse
Affiliation(s)
- Stéphanie Aparicio
- CALAGUA - Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, València, Spain.
| | - Rebecca Serna-García
- CALAGUA - Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, València, Spain
| | - Aurora Seco
- CALAGUA - Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, València, Spain
| | - José Ferrer
- CALAGUA - Unidad Mixta UV-UPV, Institut Universitari d'Investigació d'Enginyeria de l'Aigua i Medi Ambient - IIAMA, Universitat Politècnica de València, Camí de Vera s/n, 46022 València, Spain
| | - Luis Borrás-Falomir
- CALAGUA - Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, València, Spain
| | - Ángel Robles
- CALAGUA - Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100 Burjassot, València, Spain
| |
Collapse
|
4
|
Viruela A, Aparicio S, Robles Á, Borrás Falomir L, Serralta J, Seco A, Ferrer J. Kinetic modeling of autotrophic microalgae mainline processes for sewage treatment in phosphorus-replete and -deplete culture conditions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 797:149165. [PMID: 34311355 DOI: 10.1016/j.scitotenv.2021.149165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/16/2021] [Accepted: 07/16/2021] [Indexed: 06/13/2023]
Abstract
A kinetic model of autotrophic microalgal growth in sewage was developed to determine the biokinetic processes involved, including carbon-, nitrogen- and phosphorus-limited microalgal growth, dependence on light intensity, temperature and pH, light attenuation and gas exchange to the atmosphere. A new feature was the differentiation between two metabolic pathways of phosphorus consumption according to the availability of extracellular phosphorus. Two scenarios were differentiated: phosphorus-replete and -deplete culture conditions. In the former, the microalgae absorbed phosphorus to grow and store polyphosphate. In the latter the microalgae used the stored polyphosphate as a phosphorus source for growth. Calibration and validation were performed with experimental data from a pilot-scale membrane photobioreactor (MPBR) fed with the permeate obtained from an anaerobic membrane bioreactor (AnMBR) pilot plant fed with real urban wastewater. 12 of the model parameters were calibrated. Despite the dynamics involved in the operating and environmental conditions, the model was able to reproduce the overall process performance with a single set of model parameters values. Four periods of different environmental and operational conditions were accurately simulated. Regarding the former, light and temperature ranged 10-406 μmol·m-2·s-1 and 19.7-32.1 °C, respectively. Concerning the later, the photobioreactors widths were 0.25 and 0.10 m, and the biomass and hydraulic retention times ranged 3-4.5 and 1.5-2.5 days, respectively. The validation of the model resulted in an overall correlation coefficient (R2) of 0.9954. The simulation results showed the potential of the model to predict the dynamics of the different components: the relative proportions of microalgae, nitrogen and phosphorus removal, polyphosphate storage and consumption, and soluble organic matter concentration, as well as the influence of environmental parameters on the microalgae's biokinetic processes. The proposed model could provide an effective tool for the industry to predict microalgae production and comply with the discharge limits in areas declared sensitive to eutrophication.
Collapse
Affiliation(s)
- Alexandre Viruela
- CALAGUA, Unidad Mixta UV-UPV, Institut Universitari d'Investigació d'Enginyeria de l'Aigua i Medi Ambient - IIAMA, Universitat Politècnica de València, Camí de Vera s/n, 46022 València, Spain
| | - Stéphanie Aparicio
- CALAGUA, Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100, Burjassot, València, Spain.
| | - Ángel Robles
- CALAGUA, Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100, Burjassot, València, Spain
| | - Luis Borrás Falomir
- CALAGUA, Unidad Mixta UV-UPV, Institut Universitari d'Investigació d'Enginyeria de l'Aigua i Medi Ambient - IIAMA, Universitat Politècnica de València, Camí de Vera s/n, 46022 València, Spain
| | - Joaquín Serralta
- CALAGUA, Unidad Mixta UV-UPV, Institut Universitari d'Investigació d'Enginyeria de l'Aigua i Medi Ambient - IIAMA, Universitat Politècnica de València, Camí de Vera s/n, 46022 València, Spain
| | - Aurora Seco
- CALAGUA, Unidad Mixta UV-UPV, Departament d'Enginyeria Química, Universitat de València, Avinguda de la Universitat s/n, 46100, Burjassot, València, Spain
| | - José Ferrer
- CALAGUA, Unidad Mixta UV-UPV, Institut Universitari d'Investigació d'Enginyeria de l'Aigua i Medi Ambient - IIAMA, Universitat Politècnica de València, Camí de Vera s/n, 46022 València, Spain
| |
Collapse
|
5
|
Yin Z, Zhu L, Li S, Hu T, Chu R, Mo F, Hu D, Liu C, Li B. A comprehensive review on cultivation and harvesting of microalgae for biodiesel production: Environmental pollution control and future directions. BIORESOURCE TECHNOLOGY 2020; 301:122804. [PMID: 31982297 DOI: 10.1016/j.biortech.2020.122804] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 05/05/2023]
Abstract
Biodiesel is one of the best promising candidates in response to the energy crisis, since it has the capability to minimize most of the environmental problems. Microalgae, as the feedstock of third-generation biodiesel, are considered as one of the most sustainable resources. However, microalgae production for biodiesel feedstock on a large scale is still limited, because of the influences of lipid contents, biomass productivities, lipid extraction technologies, the water used in microalgae cultivation and processes of biomass harvesting. This paper firstly reviews the recent advances in microalgae cultivation and growth processes. Subsequently, current microalgae harvesting technologies are summarized and flocculation mechanisms are analyzed, while the characteristics that the ideal harvesting methods should have are summarized. This review also summarizes the environmental pollution control performances and the key challenges in future. The key suggestions and conclusions in the paper can offer a promising roadmap for the cost-effective biodiesel production.
Collapse
Affiliation(s)
- Zhihong Yin
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Liandong Zhu
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China; Faculty of Technology, and Vaasa Energy Institute, University of Vaasa, PO Box 700, FI-65101 Vaasa, Finland.
| | - Shuangxi Li
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Tianyi Hu
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Ruoyu Chu
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Fan Mo
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Dan Hu
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Chenchen Liu
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| | - Bin Li
- School of Resource and Environmental Sciences, Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, and Hubei International Scientific and Technological Cooperation Base of Sustainable Resource and Energy, Wuhan University, Wuhan 430079, PR China
| |
Collapse
|
6
|
Markou G, Arapoglou D, Eliopoulos C, Balafoutis A, Taddeo R, Panara A, Thomaidis N. Cultivation and safety aspects of Arthrospira platensis (Spirulina) grown with struvite recovered from anaerobic digestion plant as phosphorus source. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101716] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
7
|
Li K, Liu Q, Fang F, Luo R, Lu Q, Zhou W, Huo S, Cheng P, Liu J, Addy M, Chen P, Chen D, Ruan R. Microalgae-based wastewater treatment for nutrients recovery: A review. BIORESOURCE TECHNOLOGY 2019; 291:121934. [PMID: 31395401 DOI: 10.1016/j.biortech.2019.121934] [Citation(s) in RCA: 218] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2019] [Revised: 07/27/2019] [Accepted: 07/29/2019] [Indexed: 05/05/2023]
Abstract
The water resource crisis and concerns with environmental pollution are pushing for upgrading of conventional wastewater treatment process. Microalgae-based wastewater treatment process has shown many advantages that can meet the new demand for improved wastewater treatment. However, considering the issues related to the complexity of wastewater characteristics and adaptability of microalgae species, and the challenges to the design and optimization of treatment processes in order to achieve higher removal efficiencies with lower costs, further exploration and research are still needed. This review provides an overview of microalgae strains commonly used for wastewater treatment, physical and chemical properties of various wastewaters and their suitability for algae cultivation, factors affecting algae growth, nutrient assimilation/removal and biomass productivity. The design and operation of microalgae-based wastewater treatment processes are also discussed. Moreover, the issues and limitations of microalgae-based wastewater treatment are also discussed and suggestions are proposed for the further research and development.
Collapse
Affiliation(s)
- Kun Li
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China; Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Avenue, St. Paul, MN 55112, USA
| | - Qiang Liu
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Fan Fang
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Ruihuan Luo
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Qian Lu
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Wenguang Zhou
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources, Environmental and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Shuhao Huo
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Pengfei Cheng
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China
| | - Junzhi Liu
- College of Marine Science and Technology, Zhejiang Ocean University, Zhoushan 316022, China
| | - Min Addy
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Avenue, St. Paul, MN 55112, USA
| | - Paul Chen
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Avenue, St. Paul, MN 55112, USA
| | - Dongjie Chen
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Avenue, St. Paul, MN 55112, USA
| | - Roger Ruan
- Center for Biorefining and Department of Bioproducts and Biosystems Engineering, University of Minnesota, 1390 Eckles Avenue, St. Paul, MN 55112, USA.
| |
Collapse
|
8
|
Kube M, Jefferson B, Fan L, Roddick F. The impact of wastewater characteristics, algal species selection and immobilisation on simultaneous nitrogen and phosphorus removal. ALGAL RES 2018. [DOI: 10.1016/j.algal.2018.01.009] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
9
|
Prasad MSV, Varma AK, Kumari P, Mondal P. Production of lipid-containing microalgal biomass and simultaneous removal of nitrate and phosphate from synthetic wastewater. ENVIRONMENTAL TECHNOLOGY 2018; 39:669-681. [PMID: 28327057 DOI: 10.1080/09593330.2017.1310302] [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: 01/19/2016] [Accepted: 03/18/2017] [Indexed: 06/06/2023]
Abstract
The major concerns of the modern society such as increasing population, climate change and economic development are imposing continuous stress on water and energy resources. The present work deals with the cultivation of green algae Desmodesmus abundans for optimum biomass productivity and lipid content as well as simultaneous removal of nitrate and phosphate from synthetic wastewater. The algal biomass is characterized by ultimate analysis, scanning electron microscopic analysis and thermogravimetric analysis. The effect of time, inoculum concentration and nitrate concentration on four responses (biomass productivity, lipid content, removal of nitrate and removal of phosphate) are studied by response surface methodology using central composite design. The quadratic models are found to be suitable for each response. At optimized experimental conditions, the algae showed biomass productivity of 46.96 mg L-1 day-1, lipid content of 16.23%, nitrate removal of 86.64% and phosphate removal of 87.52% after 27 days, when the initial inoculum concentration was 6% and nitrate concentration was 1.25 g L-1.
Collapse
Affiliation(s)
- M S V Prasad
- a Department of Chemical Engineering , Indian Institute of Technology Roorkee , Roorkee , Uttarakhand , India
| | - A K Varma
- a Department of Chemical Engineering , Indian Institute of Technology Roorkee , Roorkee , Uttarakhand , India
| | - P Kumari
- a Department of Chemical Engineering , Indian Institute of Technology Roorkee , Roorkee , Uttarakhand , India
| | - P Mondal
- a Department of Chemical Engineering , Indian Institute of Technology Roorkee , Roorkee , Uttarakhand , India
| |
Collapse
|
10
|
Sukačová K, Kočí R, Žídková M, Vítěz T, Trtílek M. Novel insight into the process of nutrients removal using an algal biofilm: The evaluation of mechanism and efficiency. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2017; 19:909-914. [PMID: 28318295 DOI: 10.1080/15226514.2017.1303810] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Eutrophication of water by nutrient pollution remains an important environmental issue. The aim of this study was to evaluate the nutrient uptake capacity of an algal biofilm as a means to treat polluted water. In addition, the study investigated the nutrient removal process. The algal biofilm was able to remove 99% of phosphorus within 24 hours of P addition, with the PO4-P concentration in inflowing water ranging from 3 to 10 mg L-1. Different patterns of phosphorus and nitrogen removal were observed. Daily quantity of removed NO3-N ranged from 2 to 25% and was highly dependent on solar irradiance. Precipitation of phosphorus during the removal process was studied using X-ray diffraction analyses and was not confirmed in the biofilm. The biofilm system we constructed has a high efficiency for phosphorus removal and, therefore, has great potential for integration into wastewater treatment processes.
Collapse
Affiliation(s)
- Kateřina Sukačová
- a Global Change Research Institute, Academy of Sciences of the Czech Republic , Czech Republic
| | - Radka Kočí
- b Photon Systems Instruments , Czech Republic
| | - Milena Žídková
- a Global Change Research Institute, Academy of Sciences of the Czech Republic , Czech Republic
| | - Tomáš Vítěz
- c Department of Agricultural , Food and Environmental Engineering, Mendel University in Brno , Czech Republic
| | | |
Collapse
|
11
|
Ruiz-Martínez A, Serralta J, Seco A, Ferrer J. Modeling light and temperature influence on ammonium removal by Scenedesmus sp. under outdoor conditions. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2016; 74:1964-1970. [PMID: 27789897 DOI: 10.2166/wst.2016.383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The ammonium removal rate of the microalga Scenedesmus sp. was studied under outdoor conditions. Microalgae were grown in a 500 L flat-plate photobioreactor and fed with the effluent of a submerged anaerobic membrane bioreactor. Temperature ranged between 9.5 °C and 32.5 °C and maximum light intensity was 1,860 μmol·m-2·s-1. A maximum specific ammonium removal rate of 3.71 mg NH4+-N·g TSS-1·h-1 was measured (at 22.6 °C and with a light intensity of 1,734 μmol·m-2·s-1). A mathematical model considering the influence of ammonium concentration, light and temperature was validated. The model successfully reproduced the observed values of ammonium removal rate obtained and it is thus presented as a useful tool for plant operation.
Collapse
Affiliation(s)
- Ana Ruiz-Martínez
- Universitat Politècnica de Valencia, Instituto de Ingeniería del Agua y Medio Ambiente (IIAMA), Camino de Vera s/n, 46022 Valencia, Spain E-mail:
| | - Joaquin Serralta
- Universitat Politècnica de Valencia, Instituto de Ingeniería del Agua y Medio Ambiente (IIAMA), Camino de Vera s/n, 46022 Valencia, Spain E-mail:
| | - Aurora Seco
- Universitat de València, Escola Tècnica Superior d'Enginyeria, Departament d'Enginyeria Química, Avinguda de la Universitat s/n., 46100 Burjassot, Valencia, Spain
| | - Jose Ferrer
- Universitat Politècnica de Valencia, Instituto de Ingeniería del Agua y Medio Ambiente (IIAMA), Camino de Vera s/n, 46022 Valencia, Spain E-mail:
| |
Collapse
|
12
|
Whitton R, Le Mével A, Pidou M, Ometto F, Villa R, Jefferson B. Influence of microalgal N and P composition on wastewater nutrient remediation. WATER RESEARCH 2016; 91:371-8. [PMID: 26854403 DOI: 10.1016/j.watres.2015.12.054] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Revised: 12/21/2015] [Accepted: 12/31/2015] [Indexed: 05/12/2023]
Abstract
Microalgae have demonstrated the ability to remediate wastewater nutrients efficiently, with methods to further enhance performance through species selection and biomass concentration. This work evaluates a freshwater species remediation characteristics through analysis of internal biomass N:P (nitrogen:phosphorus) and presents a relationship between composition and nutrient uptake ability to assist in species selection. Findings are then translated to an optimal biomass concentration, achieved through immobilisation enabling biomass intensification by modifying bead concentration, for wastewaters of differing nutrient concentrations at hydraulic retention times (HRT) from 3 h to 10 d. A HRT <20 h was found suitable for the remediation of secondary effluent by immobilised Scenedesmus obliquus and Chlorella vulgaris at bead concentrations as low as 3.2 and 4.4 bead·mL(-1). Increasing bead concentrations were required for shorter HRTs with 3 h possible at influent concentrations <5 mgP L(-1).
Collapse
Affiliation(s)
| | - Amandine Le Mével
- Ecole Nationale Superieure de Chimie de Rennes, 35708 Rennes Cedex 7, France
| | - Marc Pidou
- Cranfield University, Cranfield, MK43 0AL, UK
| | - Francesco Ometto
- Scandinavian Biogas Fuels AB, Linköping University, 58 183, Linköping, Sweden
| | | | | |
Collapse
|
13
|
He J, Wang W, Shi W, Cui F. La2O3 nanoparticle/polyacrylonitrile nanofibers for bacterial inactivation based on phosphate control. RSC Adv 2016. [DOI: 10.1039/c6ra22374e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
La2O3 nanoparticle-doped PAN nanofiber mats were prepared by an electrospinning process.
Collapse
Affiliation(s)
- Jiaojie He
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Enviromental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Wei Wang
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Enviromental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Wenxin Shi
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Enviromental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Fuyi Cui
- State Key Laboratory of Urban Water Resource and Environment (SKLUWRE)
- School of Municipal and Enviromental Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| |
Collapse
|
14
|
Zhu S, Wang Y, Xu J, Shang C, Wang Z, Xu J, Yuan Z. Luxury uptake of phosphorus changes the accumulation of starch and lipid in Chlorella sp. under nitrogen depletion. BIORESOURCE TECHNOLOGY 2015; 198:165-71. [PMID: 26386419 DOI: 10.1016/j.biortech.2015.08.142] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 08/24/2015] [Accepted: 08/27/2015] [Indexed: 05/15/2023]
Abstract
The aim of this research was to study the effect of phosphorus supply on starch and lipid production under nitrogen starvation using Chlorella sp. as a model. High phosphate level had marginal effect on cell density but increased biomass growth. Massive phosphorus was assimilated quickly and mainly stored in the form of polyphosphate. The algal cells ceased phosphorus uptake when intracellular phosphorus reached a certain level. 5mM phosphate in the culture rendered a 16.7% decrease of starch synthesis and a 22.4% increase of lipid synthesis relative to low phosphate (0.17 mM). It is plausible that phosphate can regulate carbon partitioning between starch and lipid synthesis pathway by influencing ADP-glucose pyrophosphorylase activity. Moreover, high phosphate concentration enhanced the abundance of oleic acid, improving oil quality for biodiesel production. It is a promising cultivation strategy by integration of phosphorus removal from wastewater with biodiesel production for this alga.
Collapse
Affiliation(s)
- Shunni Zhu
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Yajie Wang
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Jin Xu
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Changhua Shang
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Zhongming Wang
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Jingliang Xu
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
| | - Zhenhong Yuan
- Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China.
| |
Collapse
|
15
|
Whitton R, Ometto F, Pidou M, Jarvis P, Villa R, Jefferson B. Microalgae for municipal wastewater nutrient remediation: mechanisms, reactors and outlook for tertiary treatment. ACTA ACUST UNITED AC 2015. [DOI: 10.1080/21622515.2015.1105308] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Rachel Whitton
- Cranfield Water Sciences Institute, Cranfield University, Cranfield MK43 0AL, Bedfordshire, UK
| | - Francesco Ometto
- Scandinavian Biogas Fuels AB, Linköping University, SE-58 183 Linköping, Sweden
| | - Marc Pidou
- Cranfield Water Sciences Institute, Cranfield University, Cranfield MK43 0AL, Bedfordshire, UK
| | - Peter Jarvis
- Cranfield Water Sciences Institute, Cranfield University, Cranfield MK43 0AL, Bedfordshire, UK
| | - Raffaella Villa
- Cranfield Water Sciences Institute, Cranfield University, Cranfield MK43 0AL, Bedfordshire, UK
| | - Bruce Jefferson
- Cranfield Water Sciences Institute, Cranfield University, Cranfield MK43 0AL, Bedfordshire, UK
| |
Collapse
|