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1. Static mixer proposal for tubular photobioreactors to reduce mixing energy consumption and enhance light–dark cycles

Author:
Salguero‐Rodríguez, Yulánderson; Gómez‐Pérez, C A; Arango‐Restrepo, Juan P; Espinosa, Jairo
Source:
Journal of chemical technology and biotechnology 2021 v.96 no.1 pp. 113-124
ISSN:
0268-2575
Subject:
algae culture,   etc   ; behavior; correlation; energy; flow; frequency; lighting; literature; mixers; mixing; nutrient uptake; photobioreactors; photoperiod; velocity;     Show all 14 Subjects
Abstract:
... BACKGROUND: Tubular Photobioreactors (PBR) present better productivity using static mixers but they consume large amounts of energy. In this study, a tubular PBR is presented with a new static mixer that produces swirl mixing, inducing light–dark (LD) cycles, and adequate uptake of nutrients in the culture. This study was focused on diminishing the pumping energy required for culture transport whi ...
DOI:
10.1002/jctb.6516

2. Factors impacting the effectiveness of biological pretreatment for the alleviation of algal growth inhibition on anaerobic digestate

Author:
Wang, Qichen; Hyman, Miriam; Higgins, Brendan T.
Source:
Algal research 2021 v.53 pp. 102129
ISSN:
2211-9264
Subject:
algae culture,   etc   ; Auxenochlorella protothecoides; Chlorella sorokiniana; algae; bacteria; biomass; cell death; growth retardation; lipid content; pretreatment; research; sludge; starch; strains;     Show all 14 Subjects
Abstract:
... Algal growth is often inhibited in full-strength anaerobic digestate. The objective of this study was to investigate conditions under which digestate pretreatment using bacteria is effective in promoting algal growth, nutrient removal, and favorable changes in algal biomass composition. Batch culture experiments were carried out using low- and high-strength municipal sludge anaerobic digestate, tw ...
DOI:
10.1016/j.algal.2020.102129

3. Development and application of quantitative real-time PCR based on the mitochondrial cytochrome oxidase subunit I gene for early detection of the grazer Poterioochromonas malhamensis contaminating Chlorella culture

Author:
Wang, Xianhui; Li, Huannan; Zhan, Xueling; Ma, Mingyang; Yuan, Danni; Hu, Qiang; Gong, Yingchun
Source:
Algal research 2021 v.53 pp. 102133
ISSN:
2211-9264
Subject:
algae culture,   etc   ; Chlorella sorokiniana; air; algae; cells; cytochrome-c oxidase; detection; environment; genes; mitochondria; monitoring; ponds; population dynamics; quantitative polymerase chain reaction; research; sampling; water;     Show all 17 Subjects
Abstract:
... Poterioochromonas malhamensis is a flagellate grazer that readily contaminates Chlorella cultures and can have a devastating impact on them, especially in large-scale culture. Here, we developed a quantitative real-time polymerase chain reaction (qPCR) method to detect and quantify P. malhamensis from high-density Chlorella cultures. A set of primers specific to the mitochondrial cytochrome oxidas ...
DOI:
10.1016/j.algal.2020.102133

4. Genomic insights into antioxidant activities of Pyruvatibacter mobilis CGMCC 1.15125T, a pyruvate-requiring bacterium isolated from the marine microalgae culture

Author:
Rong, Jin-Cheng; Ji, Bo-Wen; Zheng, Ning; Sun, Zhong-Zhi; Li, Yi-Song; Xie, Bin-Bin
Source:
Marine genomics 2021 v.55 pp. 100791
ISSN:
1874-7787
Subject:
algae culture,   etc   ; antioxidant activity; aquatic bacteria; chromosomes; culture media; genes; genomics; glutathione; habitats; hydrogen peroxide; microalgae; nucleotide sequences; oxidative stress; photosynthesis; pyruvic acid; superoxide dismutase;     Show all 16 Subjects
Abstract:
... Pyruvate is a well-known scavenger of reactive oxygen species (ROS) like hydrogen peroxide and could prevent cells from oxidative damage. A pyruvate-requiring marine bacterium, Pyruvatibacter mobilis CGMCC 1.15125ᵀ (=KCTC 42509ᵀ), was isolated from the culture broth of a photosynthetic marine microalga. Here we report the complete genome sequence of Pyruvatibacter mobilis, which contained a circul ...
DOI:
10.1016/j.margen.2020.100791

5. Sustainable production of microalgae in raceways: Nutrients and water management as key factors influencing environmental impacts

Author:
Herrera, Axel; D’Imporzano, Giuliana; Acién Fernandez, Francisco Gabriel; Adani, Fabrizio
Source:
Journal of cleaner production 2021 v.287 pp. 125005
ISSN:
0959-6526
Subject:
algae culture,   etc   ; aquaculture feeds; carbon dioxide; climate change; depuration; energy efficiency; environmental impact; environmental performance; fertilizer application; flue gas; inventories; liquids; mineral fertilizers; nutrients; raceways; slurries; supply; toxicity; wastewater; water; water management; Spain;     Show all 22 Subjects
Abstract:
... Microalgae production has taken on importance for its ability to be more energy efficient than land crops, with low input requirements and a wide number of possible applications.This work aimed to evaluate the environmental impacts of the production of microalgae for use as bio-stimulants and aquaculture feeds. Inventory data from a real production facility of 1 ha located in Almería (Spain) were ...
DOI:
10.1016/j.jclepro.2020.125005

6. Enclosed “non-conventional” photobioreactors for microalga production: A review

Author:
Assunção, Joana; Malcata, F. Xavier
Source:
Algal research 2020 v.52 pp. 102107
ISSN:
2211-9264
Subject:
algae culture,   etc   ; biodiesel; effluents; equipment performance; lipids; microalgae; photobioreactors; process design; qualitative analysis; value-added products;     Show all 10 Subjects
Abstract:
... Recent years have witnessed a growing interest in microalgae, namely toward production of lipids for biodiesel, upgrade of effluents, and synthesis of high added-value compounds. However, industrial production remains a major issue – chiefly due to the constraints posed by classical cultivation systems. Common system designs for microalga cultivation exhibit major bottlenecks, with regard to such ...
DOI:
10.1016/j.algal.2020.102107

7. Bioprocess strategies for enhancing the outdoor production of Nannochloropsis gaditana: an evaluation of the effects of pH on culture performance in tubular photobioreactors

Author:
Moraes, L.; Rosa, G. M.; Cara, I. M.; Santos, L. O.; Morais, M. G.; Grima, E. Molina; Costa, J. A. V.; Fernández, F. G. Acién
Source:
Bioprocess and biosystems engineering 2020 v.43 no.10 pp. 1823-1832
ISSN:
1615-7591
Subject:
algae culture,   etc   ; Nannochloropsis; biomass production; bioprocessing; carbon dioxide; engineering; industrial applications; microalgae; pH; photobioreactors; photosynthesis; supply;     Show all 12 Subjects
Abstract:
... A priority of the industrial applications of microalgae is the reduction of production costs while maximizing algae biomass productivity. The purpose of this study was to carry out a comprehensive evaluation of the effects of pH control on the production of Nannochloropsis gaditana in tubular photobioreactors under external conditions while considering the environmental, biological, and operationa ...
DOI:
10.1007/s00449-020-02373-x

8. Analysis of microalgae dynamics models

Author:
Sridhar, Lakshmi
Source:
Biofuels 2020 v.11 no.5 pp. 637-641
ISSN:
1759-7277
Subject:
algae culture,   etc   ; behavior; biofuels; branches; dynamic models; equations; light; microalgae; nitrogen; paper;     Show all 10 Subjects
Abstract:
... Microalgae are considered to be a very important biofuel producer, under conditions of nitrogen deprivation. The Droop model has been widely used to predict microalgal behavior. The Droop model equations have been modified to deal with issues pertaining to light distribution and nitrogen uptake. In this paper, a singularity analysis of the steady-state Droop model equations and its modifications i ...
DOI:
10.1080/17597269.2017.1387747

9. Isolation and characterization of a heat-resistant strain with high yield of Pyropia haitanensis induced by ultraviolet ray

Author:
Ding, Hongchang; Fei, Qinjiao; Zhang, Peng; Wang, Tiegan; Yan, Xinghong
Source:
Aquaculture 2020 v.521 pp. 735050
ISSN:
0044-8486
Subject:
algae culture,   etc   ; Conchocelis; Pyropia; genetic variation; heat stress; heat tolerance; irradiation; mutagenesis; ultraviolet radiation;     Show all 9 Subjects
Abstract:
... The blades of the wild-type strain (WT-10) of Pyropia haitanensis were irradiated with ultraviolet ray and treated with heat stress, and then a heat-resistant strain (SW-81) with high yield was isolated. Ultraviolet ray has a good effect on mutagenesis of tender blades of P. haitanensis, when the irradiation dose increased from 0 to 600 μW•min/cm², the frequency of the color-mutated cell-clusters ...
DOI:
10.1016/j.aquaculture.2020.735050

10. A review on microalgal culture to treat anaerobic digestate food waste effluent

Author:
Chuka-ogwude, David; Ogbonna, James; Moheimani, Navid R.
Source:
Algal research 2020 v.47 pp. 101841
ISSN:
2211-9264
Subject:
algae culture,   etc   ; ammonium; ammonium nitrogen; anaerobic digestion; energy; food waste; microalgae;     Show all 7 Subjects
Abstract:
... Food waste constitutes a significant portion of waste in the world. Indeed, it is estimated that about one-third of edible human food is wasted globally. Anaerobic digestion has been identified as a promising technology for the treatment of food waste as it generates a significant amount of energy and can remove a substantial portion of the organics. However, this process has not been adequately a ...
DOI:
10.1016/j.algal.2020.101841

11. Microalgae-based nitrogen bioremediation

Author:
Chen, Hui; Wang, Qiang
Source:
Algal research 2020 v.46 pp. 101775
ISSN:
2211-9264
Subject:
algae culture,   etc   ; air; ammonium nitrogen; bioremediation; biotransformation; human health; microalgae; nitrogen; nitrogen oxides; pollutants; pollution; wastewater;     Show all 12 Subjects
Abstract:
... Pollution poses an increasing threat to the environment and to human health. Nitrogen pollution is of great concern, with nitrogen oxide (NOx) in the air and ammonia nitrogen in water being two major pollutants. Culturing microalgae in NOx or wastewater with high concentrations of ammonia nitrogen would both reduce environmental pollution and provide a source of nitrogen for microalgal culture. Ho ...
DOI:
10.1016/j.algal.2019.101775

12. Nutrient removal from swine wastewater with growing microalgae at various zinc concentrations

Author:
Li, Xiang; Yang, Chunping; Zeng, Guangming; Wu, Shaohua; Lin, Yan; Zhou, Qi; Lou, Wei; Du, Cheng; Nie, Lijun; Zhong, Yuanyuan
Source:
Algal research 2020 v.46 pp. 101804
ISSN:
2211-9264
Subject:
algae culture,   etc   ; ammonium nitrogen; microalgae; nutrients; pH; phosphorus; pollutants; swine; volatilization; wastewater; wastewater treatment; zinc;     Show all 12 Subjects
Abstract:
... Coelastrella sp. grows well in swine wastewater, and could remove nutrients from swine wastewater. Some typical pollutants such as Zn(II) in swine wastewater might affect the growth of microalgae and the nutrient removal performance. In this study, Coelastrella sp. was cultivated in swine wastewater at various Zn(II) concentrations, and the nutrient removal capacity and physiological and biochemic ...
DOI:
10.1016/j.algal.2020.101804

13. Selenium Incorporation to Amino Acids in Chlorella Cultures Grown in Phototrophic and Heterotrophic Regimes

Author:
Mylenko, Mykola; Vu, Dai Long; Kuta, Jan; Ranglová, Karolína; Kubáč, David; Lakatos, Gergely; Grivalský, Tomáš; Caporgno, Martin Pablo; da Câmara Manoel, João Artur; Kopecký, Jiří; Masojídek, Jiří; Hrouzek, Pavel
Source:
Journal of agricultural and food chemistry 2020 v.68 no.6 pp. 1654-1665
ISSN:
1520-5118
Subject:
algae culture,   etc   ; Chlorella; amino acids; bioavailability; biomass production; dietary supplements; fermenters; laboratory experimentation; microalgae; selenium; sulfur;     Show all 11 Subjects
Abstract:
... Microalgae accumulate bioavailable selenium-containing amino acids (Se-AAs), and these are useful as a food supplement. While this accumulation has been studied in phototrophic algal cultures, little data exists for heterotrophic cultures. We have determined the Se-AAs content, selenium/sulfur (Se/S) substitution rates, and overall Se accumulation balance in photo- and heterotrophic Chlorella cult ...
DOI:
10.1021/acs.jafc.9b06196

14. Current research and perspectives on microalgae-derived biodiesel

Author:
Singh, Kartik; Kaloni, Deeksha; Gaur, Sakshi; Kushwaha, Shipra; Mathur, Garima
Source:
Biofuels 2020 v.11 no.1 pp. 1-18
ISSN:
1759-7277
Subject:
algae culture,   etc   ; biodiesel; biorefining; fossil fuels; fuel production; lipids; microalgae; production costs; transesterification; water footprint;     Show all 10 Subjects
Abstract:
... Biofuels have gained much attention in the recent years. Microalgae hold tremendous potential for production of biofuels as a suitable alternative to conventional fossil fuels. However, in order to ensure sustainability of the biofuel production from microalgae, many issues needs to be considered. Large-scale production of such biofuels is often limited by high cost of production, various environm ...
DOI:
10.1080/17597269.2017.1278932

15. Removal of biogenic compounds from the post-fermentation effluent in a culture of Chlorella vulgaris

Author:
Szwarc, Karolina; Szwarc, Dawid; Zieliński, Marcin
Source:
Environmental science and pollution research international 2020 v.27 no.1 pp. 111-117
ISSN:
0944-1344
Subject:
algae culture,   etc   ; Chlorella vulgaris; Scenedesmus; biomass; culture media; microalgae; nitrogen; nutrients; organic carbon; phosphorus; wastewater; whey;     Show all 12 Subjects
Abstract:
... Wastewater rich in organic carbon, nitrogen and phosphorus may serve as a convenient source of carbon and nutrients for a year-long microalgae production. Scientific reports indicate that some single-cell microalgae such as Chlorella and Scenedesmus, are highly tolerant to wastewater environments and efficiently remove biogenic compounds. The aim of this study was to determine the possibility of u ...
DOI:
10.1007/s11356-019-05162-6
PubMed:
31037532
PubMed Central:
PMC6974497

16. Current Bottlenecks and Challenges of the Microalgal Biorefinery

Author:
Gifuni, Imma; Pollio, Antonino; Safi, Carl; Marzocchella, Antonio; Olivieri, Giuseppe
Source:
Trends in biotechnology 2019 v.37 no.3 pp. 242-252
ISSN:
0167-7799
Subject:
algae culture,   etc   ; biorefining; feedstocks; lipids; microalgae;     Show all 5 Subjects
Abstract:
... Microalgae are increasingly considered as sources of renewable feedstocks for industrial production, and microalgae production now focuses on the multiproduct microalgal biorefinery. However, such a biorefinery presents several bottlenecks that are mainly associated with downstream processes. This reduced downstream efficiency results from unsolved problems related to the culture strategy for the ...
DOI:
10.1016/j.tibtech.2018.09.006

17. Inorganic carbon formation in rotating thin liquid films to support algal growth

Author:
Hajer, Ahmad Abu; Bayless, David
Source:
Algal research 2020 v.52 pp. 102109
ISSN:
2211-9264
Subject:
algae culture,   etc   ; air; algae; carbon dioxide; culture media; inorganic carbon; liquids; mass transfer; paper; research; supply; testing; water;     Show all 13 Subjects
Abstract:
... This paper presents the results of testing a novel gas-to-liquid mass transfer unit for enhancing the transfer of carbon dioxide (CO₂) into liquid media by reducing the mass transfer resistance through the formation of a thin liquid film on a rotating membrane. The initial (maximum) mass transfer rate of inorganic carbon into liquid was quantified when operating the mass transfer unit under three ...
DOI:
10.1016/j.algal.2020.102109

18. Mapping the performance of photobioreactors for microalgae cultivation: geographic position and local climate

Author:
Siqueira, Stefania F; Maroneze, Mariana M; Dias, Rosangela R; Vendruscolo, Raquel G; Wagner, Roger; de Menezes, Cristiano R; Zepka, Leila Q; Jacob‐Lopes, Eduardo
Source:
Journal of chemical technology and biotechnology 2020 v.95 no.9 pp. 2411-2420
ISSN:
0268-2575
Subject:
algae culture,   etc   ; biomass production; climatic factors; economic sustainability; latitude; light intensity; lipids; microalgae; photobioreactors; photoperiod; summer; temperature; tropics; Brazil;     Show all 14 Subjects
Abstract:
... BACKGROUND: Over 90% of microalgae cultivations on a commercial scale are grown in outdoor systems, which means that the performance of these bioprocesses is dependent on the climatic conditions in each particular locality. Thus, the selection of suitable locations according to their climatic conditions is extremely important to develop technically and economically viable processes. This study aim ...
DOI:
10.1002/jctb.6423

19. Formally described species woefully underrepresent phylogenetic diversity in the common lichen photobiont genus Trebouxia (Trebouxiophyceae, Chlorophyta): An impetus for developing an integrated taxonomy

Author:
Muggia, Lucia; Nelsen, Matthew P.; Kirika, Paul M.; Barreno, Eva; Beck, Andreas; Lindgren, Hanna; Lumbsch, H. Thorsten; Leavitt, Steven D.
Source:
Molecular phylogenetics and evolution 2020 v.149 pp. 106821
ISSN:
1055-7903
Subject:
algae culture,   etc   ; DNA; Trebouxia; algae; data collection; fungi; genetic variation; lichens; multilocus sequence typing; phylogeny; taxon descriptions;     Show all 11 Subjects
Abstract:
... Lichens provide valuable systems for studying symbiotic interactions. In lichens, these interactions are frequently described in terms of availability, selectivity and specificity of the mycobionts and photobionts towards one another. The lichen-forming, green algal genus Trebouxia Puymaly is among the most widespread photobiont, associating with a broad range of lichen-forming fungi. To date, 29 ...
DOI:
10.1016/j.ympev.2020.106821

20. Mechanism analysis for the process-dependent driven mode of NaHCO3 in algal antibiotic removal: efficiency, degradation pathway and metabolic response

Author:
Zhang, Ling; Guo, Ruixin; Li, Haitao; Du, Qiong; Lu, Jilai; Huang, Yaxin; Yan, Zhengyu; Chen, Jianqiu
Source:
Journal of hazardous materials 2020 v.394 pp. 122531
ISSN:
0304-3894
Subject:
algae culture,   etc   ; algae; biochemical pathways; carbon; cefuroxime; chlorophyll; metabolites; models; physiological response; ribulose-bisphosphate carboxylase; sodium bicarbonate;     Show all 11 Subjects
Abstract:
... This work provided a comprehensive perspective to investigate the performance of NaHCO₃-driving effect and mechanism including the antibiotic removal, degradation pathway and metabolites analysis, and the algal physiological response during the removal process. Cefuroxime sodium was selected as the target antibiotic. Our results showed that NaHCO₃ did not facilitate self-decomposition of the targe ...
DOI:
10.1016/j.jhazmat.2020.122531