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1. Unusual uranium biomineralization induced by green algae: Behavior investigation and mechanism probe

Author:
Yanxia Cheng; Ting Zhang; Shunzhang Chen; Feize Li; Renwei Qing; Tu Lan; Yuanyou Yang; Jiali Liao; Ning Liu
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 915-922
ISSN:
1001-0742
Subject:
microalgae,   etc   ; biomineralization; bioremediation; biosorbents; heavy metals; pH; potassium; uranium; wastewater; China;     Show all 10 Subjects
Abstract:
... As a biosorbent, algae are frequently used for the biotreatment or bioremediation of water contaminated by heavy metal or radionuclides. However, it is unclear that whether or not the biomineralization of these metal or radionuclides can be induced by algae in the process of bioremediation and what the mechanism is. In this work, Ankistrodsemus sp. has been used to treat the uranium-contaminated w ...
DOI:
10.1016/j.jes.2022.02.028

2. Dietary microalgae on poultry meat and eggs: explained versus unexplained effects

Author:
Sahil Kalia; Xin Gen Lei
Source:
Current opinion in biotechnology 2022 v.75 pp. 102689
ISSN:
0958-1669
Subject:
microalgae,   etc   ; biotechnology; health promotion; poultry meat;     Show all 4 Subjects
Abstract:
... Different types and sources of microalgae are used to feed broiler chickens and laying hens. This review provides a concise update on various impacts of feeding these novel ingredients on physical, chemical, and nutritional attributes of the resultant meat and eggs. Some of the observed effects may be associated with biochemical and molecular mechanisms derived from unique chemical compositions an ...
DOI:
10.1016/j.copbio.2022.102689

3. Modeling of forward osmosis for microalgae harvesting

Author:
Hoyoung Ryu; Hoon Cho; Eunhye Park; Jong-In Han
Source:
Journal of membrane science 2022 v.642 pp. 119910
ISSN:
0376-7388
Subject:
microalgae,   etc   ; hydraulic resistance; models; osmosis; porosity;     Show all 5 Subjects
Abstract:
... In this study, a transport-based model capable of predicting water flux in microalgae harvesting in forward osmosis (FO) system was developed. Based on Carman-Kozeny resistance model, steady state hydraulic resistance of cake layer comprised of microalgae cells was calculated; by means of control volume approach growth rate of the cake layer was also quantitatively obtained at transient state. Cak ...
DOI:
10.1016/j.memsci.2021.119910

4. The role of machine learning to boost the bioenergy and biofuels conversion

Author:
Zhengxin Wang; Xinggan Peng; Ao Xia; Akeel A. Shah; Yun Huang; Xianqing Zhu; Xun Zhu; Qiang Liao
Source:
Bioresource technology 2022 v.343 pp. 126099
ISSN:
0960-8524
Subject:
microalgae,   etc   ; biofuels; biomass; energy; humans; lignocellulose;     Show all 6 Subjects
Abstract:
... The development and application of bioenergy and biofuels conversion technology can play a significant role for the production of renewable and sustainable energy sources in the future. However, the complexity of bioenergy systems and the limitations of human understanding make it difficult to build models based on experience or theory for accurate predictions. Recent developments in data science ...
DOI:
10.1016/j.biortech.2021.126099

5. A methodological review on the characterization of microalgal biofilm and its extracellular polymeric substances

Author:
Yi Tong Cheah; Derek Juinn Chieh Chan
Source:
Journal of applied microbiology 2022 v.132 no.5 pp. 3490-3514
ISSN:
1364-5072
Subject:
microalgae,   etc   ; adhesion; biofilm; microbiology; polymers; polysaccharides; researchers;     Show all 7 Subjects
Abstract:
... Biofilm secreted by microalgae are extracellular polymeric substances (EPSs) composed mainly of polysaccharides, proteins, nucleic acids and lipids. These EPSs immobilize the cells and stabilize biofilm, mediating adhesion towards solid surfaces. The EPSs valorization through industrial exploitations and scientific works is becoming more popular, but the bottleneck of such studies is the lack of c ...
DOI:
10.1111/jam.15455

6. Continuous electrocoagulation of Chlorella vulgaris in a novel channel-flow reactor: A pilot-scale harvesting study

Author:
Simona Lucakova; Irena Branyikova; Sara Kovacikova; Jiri Masojidek; Karolina Ranglova; Tomas Branyik; Marek C. Ruzicka
Source:
Bioresource technology 2022 v.351 pp. 126996
ISSN:
0960-8524
Subject:
microalgae,   etc   ; Chlorella vulgaris; biomass; centrifugation; electrocoagulation; energy;     Show all 6 Subjects
Abstract:
... The most frequently used method to harvest microalgae on an industrial scale is centrifugation, although this has very high energy costs. To reduce these costs, a continuous electrocoagulation process for harvesting Chlorella vulgaris was developed and tested using a pilot-scale 111 L working volume device consisting of an electrolyser with iron electrodes, aggregation channel and lamellar settler ...
DOI:
10.1016/j.biortech.2022.126996

7. The study of fluorescence features of microalgae from the genus Pseudo-nitzschia and the possibility of their detection in water

Author:
Popik Alexander; Gamayunov Evgeniy; Voznesenskiy Sergey; Markina Zhanna; Orlova Tatiana
Source:
Algal research 2022 v.64 pp. 102662
ISSN:
2211-9264
Subject:
microalgae,   etc   ; Pseudo-nitzschia; fluorescence; modernization; research; temperature;     Show all 6 Subjects
Abstract:
... This article presents the fluorescent characteristics of eight microalgae cultures of the genus Pseudo-nitzschia. We show that the normalized fluorescence temperature curves of the studied Pseudo-nitzschia cultures are very similar. Due to this similarity, the authors obtained the “passport” characteristic, averaged on the measured characteristics, which with high accuracy approximates the fluores ...
DOI:
10.1016/j.algal.2022.102662

8. Microalgal and bacterial auxin biosynthesis: implications for algal biotechnology

Author:
Hanzhi Lin; Yantao Li; Russell T Hill
Source:
Current opinion in biotechnology 2022 v.73 pp. 300-307
ISSN:
0958-1669
Subject:
microalgae,   etc   ; biosynthesis; biotechnology; indole acetic acid; industry; metabolites;     Show all 6 Subjects
Abstract:
... Optimization of microalgal growth and high-value metabolite production are key steps in microalgal mass culture for the algae industry. An emerging technology is the use of phytohormones, like indole-3-acetic acid (IAA), to promote microalgal growth. This requires an understanding of the biosynthesis of IAA in microalgae-bacteria associations and its function in regulating algal physiology and met ...
DOI:
10.1016/j.copbio.2021.09.006

9. New Insights from the High-Resolution Monitoring of Microalgae–Virus Infection Dynamics

Author:
Gino Schiano di Visconte; Michael J. Allen; Andrew Spicer
Source:
Viruses 2022 v.14 no.3 pp. -
ISSN:
1999-4915
Subject:
microalgae,   etc   ; automation; functional diversity; photobioreactors; spectroscopy; titration; viruses;     Show all 7 Subjects
Abstract:
... Investigation of virus-induced microalgal host lysis and the associated infection dynamics typically requires sampling of infected cultures at multiple timepoints, visually monitoring the state of infected cells, or determining virus titration within the culture media. Such approaches require intensive effort and are prone to low sensitivity and high error rates. Furthermore, natural physiological ...
DOI:
10.3390/v14030466

10. Uptake of Cu2+ by unicellular microalga Chlorella vulgaris from synthetic wastewaters is attenuated by polystyrene microspheres

Author:
Imania Ghaffar; Arshad Javid; Shahid Mehmood; Ali Hussain
Source:
Chemosphere 2022 v.290 pp. 133333
ISSN:
0045-6535
Subject:
microalgae,   etc   ; Chlorella vulgaris; genes; microparticles; microplastics; polystyrenes; wastewater;     Show all 7 Subjects
Abstract:
... Aquatic and terrestrial ecosystems are receiving micro- and macro-plastic pollutants alarmingly from various anthropogenic activities. The complications caused by microplastics are largely unexplored and need substantial studies. In the current study, we investigated the repressive effects of negatively and positively charged polystyrene microspheres of two variable sizes (0.05 and 0.5 μm) on func ...
DOI:
10.1016/j.chemosphere.2021.133333

11. Enhanced wastewater treatment performance by understanding the interaction between algae and bacteria based on quorum sensing

Author:
Liu Qixin; Feng Xuan; Sheng Zhiya; Shi Wenxin; Wang Shuo; Li Ji
Source:
Bioresource technology 2022 v.354 pp. 127161
ISSN:
0960-8524
Subject:
microalgae,   etc   ; algicides; carbon; sludge; symbiosis; value added; wastewater treatment;     Show all 7 Subjects
Abstract:
... In order to further obtain sustainable wastewater treatment technology, in-depth analysis based on algal-bacterial symbiosis, quorum sensing signal molecules and algal-bacterial relationship will lay the foundation for the synergistic algal-bacterial wastewater treatment process. The methods of enhancing algae and bacteria wastewater treatment technology were systematically explored, including pro ...
DOI:
10.1016/j.biortech.2022.127161

12. Exploring the concurrent use of microalgae Coelastrella sp. for electricity generation and dairy wastewater treatment

Author:
Sikkandhar Wasim Raja; Kalyanasundaram Geetha Thanuja; Subburamu Karthikeyan; Subramanian Marimuthu
Source:
Bioresource technology reports 2022 v.17 pp. 100889
ISSN:
2589-014X
Subject:
microalgae,   etc   ; biofilm; electricity generation; paddies; voltammetry; wastewater; wastewater treatment;     Show all 7 Subjects
Abstract:
... This paper illustrates the potential of unicellular microalgae in electricity production in concurrence with wastewater treatment. Our study focused on the isolation of microalgal strains from various aquatic sources. Cyclic voltammetry was performed to detect the electrogenic activity and out of 18 algal isolates, six algal strains were screened. Coelastrella sp. from the paddy field revealed the ...
DOI:
10.1016/j.biteb.2021.100889

13. Microalga Growth-Promoting Bacteria (MGPB): A formal term proposed for beneficial bacteria involved in microalgal–bacterial interactions

Author:
Oskar A. Palacios; Blanca R. López; Luz E. de-Bashan
Source:
Algal research 2022 v.61 pp. 102585
ISSN:
2211-9264
Subject:
microalgae,   etc   ; biodiesel; biomass; biorefining; metabolism; metabolites; research; wastewater treatment;     Show all 8 Subjects
Abstract:
... Studies on the microalgal–bacterial interactions have highlighted the potential role of bacteria in optimizing microalgal biorefineries for the integrated production of metabolites and biomass, biodiesel, and wastewater treatment. Although the bacterial mechanisms responsible for the positive effects on microalgal growth and metabolism have been defined in many instances, there is a lack of a unif ...
DOI:
10.1016/j.algal.2021.102585

14. Performance enhancement and fouling alleviation by controlling transmembrane pressure in a vibration membrane system for algae separation

Author:
Shuhong Jiang; Shaoze Xiao; Huaqiang Chu; Jingjing Sun; Zhenjiang Yu; Wei Zhang; Yongsheng Chen; Xuefei Zhou; Yalei Zhang
Source:
Journal of membrane science 2022 v.647 pp. 120252
ISSN:
0376-7388
Subject:
microalgae,   etc   ; compressibility; energy; hydrodynamics; models; polysaccharides; quantitative analysis; vibration;     Show all 8 Subjects
Abstract:
... Although transmembrane pressure (TMP) has proven to be a significant factor in the separation of microalgae by the vibration membrane process, there is a lack of systematic research on this factor. This study introduced a multi-angle insight by analyzing hydrodynamic interaction acting on algae, compressibility of the cake layer, and quantitative evaluation of the membrane fouling performance to a ...
DOI:
10.1016/j.memsci.2022.120252

15. A two-stage degradation coupling photocatalysis to microalgae enhances the mineralization of enrofloxacin

Author:
Zhikun Lu; Yifeng Xu; Lai Peng; Chuanzhou Liang; Yiwen Liu; Bing-Jie Ni
Source:
Chemosphere 2022 v.293 pp. 133523
ISSN:
0045-6535
Subject:
microalgae,   etc   ; carbon dioxide; citric acid; enrofloxacin; mineralization; moieties; photocatalysis; piperazine;     Show all 8 Subjects
Abstract:
... The coupling of photocatalytic and algal processes has been used for the removal of widespread antibiotics. The removal capacities of the individual and the combined system against enrofloxacin were tested and compared in this work. Due to the low tolerance of the algae to enrofloxacin, the target compound was barely degraded during the individual algal treatment. In the individual photocatalytic ...
DOI:
10.1016/j.chemosphere.2022.133523

16. C30 and C31 steranes in Permian fossil conifers Protophyllocladoxylon

Author:
Xin Zhan
Source:
Applied geochemistry 2022 pp. 105328
ISSN:
0883-2927
Subject:
microalgae,   etc   ; Miozoa; Permian period; biosynthesis; conifers; diagenesis; geochemistry; methylation; sterols;     Show all 9 Subjects
Abstract:
... Steroids with alkyl groups at C-2 and C-3 are not known yet in any living organism, while 4-methylsteranes are previously thought specific to 4-methylsteroids bio-synthesized by limited types of organisms, such as dinoflagellates, microalgae, and certain bacteria. Here we investigate the occurrence of C₃₀ 2α-, 3β-, 4α-methyl-24-ethylcholestanes, C₃₁ 3β,24-diethylcholestanes, and 3,4-dimethyl-24-et ...
DOI:
10.1016/j.apgeochem.2022.105328

17. Extracellular polymeric substances in green alga facilitate microplastic deposition

Author:
Kishore Gopalakrishnan; Donna R. Kashian
Source:
Chemosphere 2022 v.286 pp. 131814
ISSN:
0045-6535
Subject:
microalgae,   etc   ; Chlamydomonas; aquatic environment; biofilm; excretion; food webs; microplastics; sediments;     Show all 8 Subjects
Abstract:
... Microplastics (MPs) are globally ubiquitous in sediments and surface waters. Interactions between biota and MPs are complex and influence their fate and effects in the environment. Once MPs enter aquatic systems, they are colonized by biofilms that may form from the excretion of extracellular polymeric substances (EPS) from microalgae. Biofilm accumulation may change the density of the MPs, contri ...
DOI:
10.1016/j.chemosphere.2021.131814

18. In situ extraction (milking) of the two promising Botryococcus braunii strains Showa and Bot22 under optimized extraction time

Author:
Christian Kleinert; Carola Griehl
Source:
Journal of applied phycology 2022 v.34 no.1 pp. 269-283
ISSN:
0921-8971
Subject:
microalgae,   etc   ; Botryococcus braunii; algology; biomass; dewatering; extracellular matrix; lipids; solvents;     Show all 8 Subjects
Abstract:
... In situ extraction or “milking” of microalgae is a promising approach to reduce downstream costs in order to produce low-value substances such as lipids from microalgae in an economical way. Due to its ability to secrete high amounts of long-chain hydrocarbons to an extracellular matrix, the green microalga Botryococcus braunii is suitable for the process of in situ extraction as the cost intensiv ...
DOI:
10.1007/s10811-021-02633-7

19. Microalgal dewatering with focus on filtration and antifouling strategies: A review

Author:
Victor Okorie Mkpuma; Navid Reza Moheimani; Houda Ennaceri
Source:
Algal research 2022 v.61 pp. 102588
ISSN:
2211-9264
Subject:
microalgae,   etc   ; algae culture; biomass; dewatering; economic sustainability; energy; microfiltration; research;     Show all 8 Subjects
Abstract:
... Dewatering constitutes a major drawback in terms of cost and energy required to concentrate a highly diluted microalgal culture. This has hampered the economic viability of microalgal products. To this end, several technologies have been developed for harvesting microalgal biomass. Membrane technology emerges as one of the preferred harvesting and dewatering technologies in terms of low cost, simp ...
DOI:
10.1016/j.algal.2021.102588

20. Microbial-enabled green biosynthesis of nanomaterials: Current status and future prospects

Author:
Yue Yang; Geoffrey I.N. Waterhouse; Yilun Chen; Dongxiao Sun-Waterhouse; Dapeng Li
Source:
Biotechnology advances 2022 v.55 pp. 107914
ISSN:
0734-9750
Subject:
microalgae,   etc   ; bacteria; biosynthesis; biotechnology; ecotoxicology; genomics; metabolites; proteomics; viruses; yeasts;     Show all 10 Subjects
Abstract:
... Global challenges require novel solutions. Microbial nanotechnology has the potential to offer an eco-friendly approach for advancing the pharmaceutical, food, environment and agriculture sectors. This review summarizes recent developments in the synthesis and applications of bionanomaterials created by intracellular and/or extracellular biosynthesis processes involving various microorganisms (e.g ...
DOI:
10.1016/j.biotechadv.2022.107914