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García-Galán MJ, Monllor-Alcaraz LS, Postigo C, Uggetti E, López de Alda M, Díez-Montero R, García J. Microalgae-based bioremediation of water contaminated by pesticides in peri-urban agricultural areas. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 265:114579. [PMID: 32806438 DOI: 10.1016/j.envpol.2020.114579] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Revised: 03/20/2020] [Accepted: 04/09/2020] [Indexed: 05/27/2023]
Abstract
The present study evaluated the capacity of a semi-closed, tubular horizontal photobioreactor (PBR) to remove pesticides from agricultural run-off. The study was carried out in summer (July) to study its efficiency under the best conditions (highest solar irradiation). A total of 51 pesticides, including 10 transformation products, were selected and investigated based on their consumption rate and environmental relevance. Sixteen of them were detected in the agricultural run-off, and the estimated removal efficiencies ranged from negative values, obtained for 3 compounds, namely terbutryn, diuron and imidacloprid, to 100%, achieved for 10 compounds. The acidic herbicide MCPA was removed by 88% in average, and the insecticides 2,4-D and diazinon showed variable removals, between 100% and negative values. The environmental risk associated to the compounds still present in the effluent of the PBR was evaluated using hazard quotients (HQs), calculated using the average and highest measured concentrations of the compounds. HQ values > 10 (meaning high risk) were obtained for imidacloprid (21), between 1 and 10 (meaning moderate risk) for 2,4-D (2.8), diazinon (4.6) and terbutryn (1.5), and <1 (meaning low risk) for the remaining compounds diuron, linuron and MCPA. The PBR treatment yielded variable removals depending on the compound, similarly to conventional wastewater treatment plants. This study provides new data on the capacity of microalgae-based treatment systems to eliminate a wide range of priority pesticides under real/environmental conditions.
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Affiliation(s)
- María Jesús García-Galán
- GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, c/Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain.
| | - Luis Simón Monllor-Alcaraz
- Water, Environmental and Food Chemistry Unit (ENFOCHEM), Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Cristina Postigo
- Water, Environmental and Food Chemistry Unit (ENFOCHEM), Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Enrica Uggetti
- GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, c/Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain
| | - Miren López de Alda
- Water, Environmental and Food Chemistry Unit (ENFOCHEM), Department of Environmental Chemistry, Institute of Environmental Assessment and Water Research (IDAEA-CSIC), C/Jordi Girona 18-26, 08034, Barcelona, Spain
| | - Rubén Díez-Montero
- GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, c/Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain
| | - Joan García
- GEMMA - Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, c/Jordi Girona 1-3, Building D1, E-08034 Barcelona, Spain
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52
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Manhaeghe D, Blomme T, Van Hulle SWH, Rousseau DPL. Experimental assessment and mathematical modelling of the growth of Chlorella vulgaris under photoautotrophic, heterotrophic and mixotrophic conditions. WATER RESEARCH 2020; 184:116152. [PMID: 32791422 DOI: 10.1016/j.watres.2020.116152] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 06/19/2020] [Accepted: 07/03/2020] [Indexed: 06/11/2023]
Abstract
Microalgae show great potential for wastewater treatment and nutrient recovery. However, microalgae cultivation and harvesting are affected by the low biomass concentrations which are inherent to the photoautotrophic growth process. Mixotrophic growth can be a solution as it increases microalgae biomass concentration independently from the incident light intensity. In this work, a combined respirometric-titrimetric unit was used to assess the microalgae kinetics during such mixotrophic growth conditions for Chlorella vulgaris. Based on the experimental results, a microalgae model was extended in order to gain more insight in the delicate balance between photoautotrophic and heterotrophic growth. The results suggest that during heterotrophic growth with light in absence of external inorganic carbon sources (i.e. photoheterotrophic growth), all CO2 produced by the heterotrophic pathway is internally recycled for photoautotrophic growth. Moreover, it was shown that photoautotrophic growth is the preferential growth mechanism under mixotrophic cultivation conditions (i.e. light + inorganic carbon + organic carbon), but that high oxygen concentrations activate the heterotrophic growth pathway to avoid photorespiration. The extended microalgae model supports these findings, with good model performance for all conducted experiments.
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Affiliation(s)
- D Manhaeghe
- Laboratory for Industrial Water and Ecotechnology (LIWET), Department of Green Chemistry and Technology, Ghent University, Graaf Karel de Goedelaan 5, B-8500, Kortrijk, Belgium.
| | - T Blomme
- Laboratory for Industrial Water and Ecotechnology (LIWET), Department of Green Chemistry and Technology, Ghent University, Graaf Karel de Goedelaan 5, B-8500, Kortrijk, Belgium
| | - S W H Van Hulle
- Laboratory for Industrial Water and Ecotechnology (LIWET), Department of Green Chemistry and Technology, Ghent University, Graaf Karel de Goedelaan 5, B-8500, Kortrijk, Belgium
| | - D P L Rousseau
- Laboratory for Industrial Water and Ecotechnology (LIWET), Department of Green Chemistry and Technology, Ghent University, Graaf Karel de Goedelaan 5, B-8500, Kortrijk, Belgium
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Pailliè-Jiménez ME, Stincone P, Brandelli A. Natural Pigments of Microbial Origin. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2020. [DOI: 10.3389/fsufs.2020.590439] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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Kumar Saini D, Yadav D, Pabbi S, Chhabra D, Shukla P. Phycobiliproteins from Anabaena variabilis CCC421 and its production enhancement strategies using combinatory evolutionary algorithm approach. BIORESOURCE TECHNOLOGY 2020; 309:123347. [PMID: 32334343 DOI: 10.1016/j.biortech.2020.123347] [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: 03/05/2020] [Revised: 04/05/2020] [Accepted: 04/06/2020] [Indexed: 05/23/2023]
Abstract
The production of phycobiliproteins (PBPs) from cyanobacteria represents both the industrial application and their commercial value. In this study, the capability of Anabaena variabilis CCC421 for the production of PBPs was evaluated which was further improved by optimization of selected BG-11 medium components viz. FAC, K2HPO4 and trace metals. A design matrix approach using evolutionary algorithm comprised of genetic-algorithm (GA) and fuzzy-logic-methodology (FLM), i.e., GA-Fuzzy, was used for the optimization. The maximum production of PBPs obtained with combinatory approach of GA-Fuzzy was 408.5 mg/L at an optimum combination of factors (FAC 0.153 g/L, K2HPO4 0.2 g/L and Trace metals 0.5 ml/L) which was a 2.13 fold more than the control medium. This novel approach is very useful for modulating biological processes since various nutrients and metabolites have greater influence on these processes.
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Affiliation(s)
- Dinesh Kumar Saini
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India; Centre for Conservation and Utilisation of Blue-Green Algae (CCUBGA), Division of Microbiology, ICAR - Indian Agricultural Research Institute, New Delhi 110 012, India
| | - Dinesh Yadav
- Department of Mechanical Engineering, Deenbandhu Chhotu Ram University of Science and Technology, Murthal 131039, Haryana, India; Department of Mechanical Engineering, University Institute of Engineering & Technology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Sunil Pabbi
- Centre for Conservation and Utilisation of Blue-Green Algae (CCUBGA), Division of Microbiology, ICAR - Indian Agricultural Research Institute, New Delhi 110 012, India.
| | - Deepak Chhabra
- Department of Mechanical Engineering, University Institute of Engineering & Technology, Maharshi Dayanand University, Rohtak 124001, Haryana, India
| | - Pratyoosh Shukla
- Enzyme Technology and Protein Bioinformatics Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak 124001, Haryana, India.
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Arashiro L, Ferrer I, Pániker CC, Gómez-Pinchetti JL, Rousseau DPL, Van Hulle SWH, Garfí M. Natural Pigments and Biogas Recovery from Microalgae Grown in Wastewater. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2020; 8:10691-10701. [PMID: 32953285 PMCID: PMC7493222 DOI: 10.1021/acssuschemeng.0c01106] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 05/05/2020] [Indexed: 05/09/2023]
Abstract
This study assessed the recovery of natural pigments (phycobiliproteins) and bioenergy (biogas) from microalgae grown in wastewater. A consortium of microalgae, mainly composed by Nostoc, Phormidium, and Geitlerinema, known to have high phycobiliproteins content, was grown in photobioreactors. The growth medium was composed by secondary effluent from a high rate algal pond (HRAP) along with the anaerobic digestion centrate, which aimed to enhance the N/P ratio, given the lack of nutrients in the secondary effluent. Additionally, the centrate is still a challenging anaerobic digestion residue since the high nitrogen concentrations have to be removed before disposal. Removal efficiencies up to 52% of COD, 86% of NH4 +-N, and 100% of phosphorus were observed. The biomass composition was monitored over the experimental period in order to ensure stable cyanobacterial dominance in the mixed culture. Phycocyanin and phycoerythrin were extracted from harvested biomass, achieving maximum concentrations of 20.1 and 8.1 mg/g dry weight, respectively. The residual biomass from phycobiliproteins extraction was then used to produce biogas, with final methane yields ranging from 159 to 199 mL CH4/g VS. According to the results, by combining the extraction of pigments and the production of biogas from residual biomass, we would not only obtain high-value compounds, but also more energy (around 5-10% higher), as compared to the single recovery of biogas. The proposed process poses an example of resource recovery from biomass grown in wastewater, moving toward a circular bioeconomy.
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Affiliation(s)
- Larissa
T. Arashiro
- GEMMA
- Group of Environmental Engineering and Microbiology, Department
of Civil and Environmental
Engineering, Universitat Politècnica
de Catalunya · BarcelonaTech, c/Jordi Girona 1-3, Building D1, 08034 Barcelona, Spain
- Laboratory
for Industrial Water and Ecotechnology (LIWET), Department of Green
Chemistry and Technology, Ghent University
Campus Kortrijk, Graaf
Karel de Goedelaan 5, B-8500 Kortrijk, Belgium
| | - Ivet Ferrer
- GEMMA
- Group of Environmental Engineering and Microbiology, Department
of Civil and Environmental
Engineering, Universitat Politècnica
de Catalunya · BarcelonaTech, c/Jordi Girona 1-3, Building D1, 08034 Barcelona, Spain
- Tel: +34 934016463.
| | - Catalina C. Pániker
- GEMMA
- Group of Environmental Engineering and Microbiology, Department
of Civil and Environmental
Engineering, Universitat Politècnica
de Catalunya · BarcelonaTech, c/Jordi Girona 1-3, Building D1, 08034 Barcelona, Spain
| | - Juan Luis Gómez-Pinchetti
- Spanish
Bank of Algae, Institute of Oceanography and Global Change, University of Las Palmas de Gran Canaria, Muelle de Taliarte, 35214 Telde, Canary Islands Spain
| | - Diederik P. L. Rousseau
- Laboratory
for Industrial Water and Ecotechnology (LIWET), Department of Green
Chemistry and Technology, Ghent University
Campus Kortrijk, Graaf
Karel de Goedelaan 5, B-8500 Kortrijk, Belgium
| | - Stijn W. H. Van Hulle
- Laboratory
for Industrial Water and Ecotechnology (LIWET), Department of Green
Chemistry and Technology, Ghent University
Campus Kortrijk, Graaf
Karel de Goedelaan 5, B-8500 Kortrijk, Belgium
| | - Marianna Garfí
- GEMMA
- Group of Environmental Engineering and Microbiology, Department
of Civil and Environmental
Engineering, Universitat Politècnica
de Catalunya · BarcelonaTech, c/Jordi Girona 1-3, Building D1, 08034 Barcelona, Spain
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Couteau C, Coiffard L. Phycocosmetics and Other Marine Cosmetics, Specific Cosmetics Formulated Using Marine Resources. Mar Drugs 2020; 18:md18060322. [PMID: 32570957 PMCID: PMC7345487 DOI: 10.3390/md18060322] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/03/2020] [Accepted: 06/15/2020] [Indexed: 12/15/2022] Open
Abstract
Marine resources exist in vast numbers and show enormous diversity. As a result, there are likely many possible applications for marine molecules of interest in the cosmetic industry, whether as excipients or additives, but especially as active substances. It is possible to obtain extracts from active substances; for example, quite a few algae species can be used in moisturizing or anti-ageing products. In the field of topical photoprotection, mycosporine-like amino acids and gadusol are important lines of enquiry that should not be overlooked. In the field of additives, the demonstration that certain seaweed (algae) extracts have antimicrobial properties suggests that they could provide alternatives to currently authorized preservatives. These promising leads must be explored, but it should be kept in mind that it is a long process to bring ingredients to market that are both effective and safe to use.
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