Investigation of flocculation and rheological properties of microalgae suspensions cultivated in industrial process wastewater DOI Creative Commons
Shifa M.R. Shaikh, Mohammed AbdulQuadir, Mustafa S. Nasser

et al.

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 328, P. 125016 - 125016

Published: Sept. 4, 2023

Microalgae harvesting at an industrial scale remains a techno-economic bottleneck for large-scale microalgae production that can account up to 30% of the total cost biomass production. A wide range techniques have been applied commercially, among which, coagulation-flocculation prove be both convenient and cost-effective as pre-treatment used in conjunction with other methods. In this study, process wastewater acquired from onshore natural gas facilities Qatar was utilized cultivate freshwater specie Scenedesmus sp. simultaneous pollution abatement applications. cultivated two growth phases (fast slow phases) examine influence phase on flocculation rheological behavior. Effective achieved using commercial high charge density molecular weight cationic polyacrylamide-based flocculant. Flocculation efficiencies exceeded 97% fast suspensions optimum flocculant dose 10 mg/L. Optimum conditions were well corroborated by residual turbidity zeta potential measurements. For suspensions, PAM coincided minimum 2.35 NTU −0.52 mV. Similarly, fixed based 2.30 +0.63 mV suspensions. Large, easily settleable compact flocs obtained average D50 values 70.7 μm 142.0 recorded respectively, dose. Moreover, characterization studies, flocculated demonstrated overall non-Newtonian pseudoplastic (shear thinning) fluid Introduction significantly improved viscosity yield stress around range. At dose, initial viscosities 10.37 39.19 mPa.s stresses 12.84 16.59 N/m2 respectively. The further displayed viscoelastic solid (gel) behavior, characterized gel strength resistance shearing doses. storage moduli 886.2 1068.6 mPa

Language: Английский

Technological advances in the production of carotenoids and their applications– A critical review DOI
Veeramuthu Ashokkumar,

G. Flora,

Murugan Sevanan

et al.

Bioresource Technology, Journal Year: 2022, Volume and Issue: 367, P. 128215 - 128215

Published: Nov. 1, 2022

Language: Английский

Citations

84
Role of secondary metabolites in distressed microalgae DOI
Martina Koláčková,

Anna Janova,

Marketa Dobesova

et al.

Environmental Research, Journal Year: 2023, Volume and Issue: 224, P. 115392 - 115392

Published: Feb. 4, 2023

Language: Английский

Citations

26
Microalgae cultivation: closing the yield gap from laboratory to field scale DOI Creative Commons
Benoı̂t Guieysse, Maxence Plouviez

Frontiers in Bioengineering and Biotechnology, Journal Year: 2024, Volume and Issue: 12

Published: Feb. 14, 2024

OPINION article Front. Bioeng. Biotechnol., 14 February 2024Sec. Bioprocess Engineering Volume 12 - 2024 | https://doi.org/10.3389/fbioe.2024.1359755

Language: Английский

Citations

15
Molecular mechanisms by which polyethylene terephthalate (PET) microplastic and PET leachate promote the growth of benthic cyanobacteria DOI

Aonan Yang,

Haiyan Pei, Ming Zhang

et al.

Water Research, Journal Year: 2025, Volume and Issue: 280, P. 123476 - 123476

Published: March 11, 2025

Language: Английский

Citations

1
Harnessing microalgae as sustainable cellular factories for biopharmaceutical production DOI

Hamieh Goshtasbi,

Yuri B. Okolodkov, Ali Movafeghi

et al.

Algal Research, Journal Year: 2023, Volume and Issue: 74, P. 103237 - 103237

Published: July 1, 2023

Language: Английский

Citations

19
Global omics study of Tetraselmis chuii reveals time-related metabolic adaptations upon oxidative stress DOI Creative Commons
Aikaterini Koletti, Dimitrios Skliros, Chrysanthi Kalloniati

et al.

Applied Microbiology and Biotechnology, Journal Year: 2024, Volume and Issue: 108(1)

Published: Jan. 16, 2024

Abstract Microalgae species encounter oxidative stress in their natural environments, prompting the development of species-specific adaptation mechanisms. Understanding these mechanisms can offer valuable insights for biotechnological applications microalgal metabolic manipulation. In this study, we investigated response Tetraselmis chuii , an industrially important microalga, to H 2 O -induced stress. Exposure 0.5-mM resulted reduced cell viability, and higher concentrations led a drastic decline. After 1 h exposure photosynthetic capacity (Qy) was negatively impacted, reduction intensified after 6 continuous Global multi-omics analysis revealed that T. rapidly responded within first hour, causing significant changes both transcriptomic metabolomic profiles. Among cellular functions affected were carbon energy flow, with photosynthesis-related PSBQ having 2.4-fold downregulation, pyruvate kinase decreased by 1.5-fold, urea content threefold. Prolonged incurred high cost, leading unsuccessful attempts enhance metabolism, as depicted, example, upregulation photosystems-related PETC PETJ more than twofold. These findings indicate quickly responds stress, but extended have detrimental effects on its functions. Key points • –induced strongly affects Distinct short- long-term are induced Major adaptations occur hour

Language: Английский

Citations

6
Investigating the effects of salinity and light stresses on primary and secondary metabolites of Tetraselmis tetrathele: Total phenolic compounds, fatty acid profile, and biodiesel properties DOI Creative Commons

Elham Nezafatian,

Omidvar Farhadian,

Ehsan Daneshvar

et al.

Biomass and Bioenergy, Journal Year: 2024, Volume and Issue: 181, P. 107050 - 107050

Published: Jan. 18, 2024

The integration of two-stage microalgal cultivation and abiotic stresses is considered a cost‐effective simple strategy for enhancing both primary secondary metabolites in microalgae. Here, Tetraselmis tetrathele Conway medium (CM) food factory wastewater (FWW) was performed. stationary phase observed after eight days (first stage) with the highest dry weight 2.70 g/L CM 2.51 FWW. In second stage, cultures were exposed to different light intensities (100 300 μmol photons/(m2.s) LED 35 100 fluorescent lamp) salinities (25 40 g/L) three days. FWW cultures, illuminated lamp at having salinity, maximum total phenolic compounds (TPCs) found be 17.57 15.02 mg GAE/g weight, respectively. These results showed that salinity stress stimulates accumulation TPCs T. tetrathele. flavonoid yield 5.18 5.12 QE/g under g/L, Increasing intensity from maximized saturated fatty acids 48.72 % 41.86 Moreover, influenced biodiesel properties, such as cetane number (CN) value. this study can applied enhance bioactive based on their conditions.

Language: Английский

Citations

6
Preventing biofouling in microalgal photobioreactors DOI Creative Commons
Yolanda Soriano-Jerez, Juan José Gallardo, L. López‐Rosales

et al.

Bioresource Technology, Journal Year: 2024, Volume and Issue: 407, P. 131125 - 131125

Published: July 17, 2024

Photobioreactors (PBRs) are used to grow the light-requiring microalgae in diverse commercial processes. Often, they operated as continuous culture over months period. However, with time, biofouling layer develops on inner surfaces of their walls. The fouling formation deteriorates PBR performance foulants reduce light penetration it. Light is essential for photosynthetic cultures, and a deterioration lighting adversely impacts algae growth biomass productivity. Fouling requires frequent shutdown clean add environmental impact operation by generating many wastewaters contaminated cleaning chemicals. Antibiofouling coatings could be modify existing future PBRs. Therefore, transparent non-toxic fouling-release coatings, produced using hydrogel technology, transform PBRs into efficient enduring systems, requiring only application coating walls, without additional investments new

Language: Английский

Citations

5
Recovery of lipids and carotenoids from Dunaliella salina microalgae using deep eutectic solvents DOI
Estéfani Alves Asevedo, Bruna M. E. Chagas, Sérgio Dantas de Oliveira Júnior

et al.

Algal Research, Journal Year: 2022, Volume and Issue: 69, P. 102940 - 102940

Published: Dec. 10, 2022

Language: Английский

Citations

22
The Effect of Combined Elicitation with Light and Temperature on the Chlorogenic Acid Content, Total Phenolic Content and Antioxidant Activity of Berula erecta in Tissue Culture DOI Creative Commons
Jan Senekovič,

Terezija Ciringer,

Jana Ambrožič‐Dolinšek

et al.

Plants, Journal Year: 2024, Volume and Issue: 13(11), P. 1463 - 1463

Published: May 25, 2024

Chlorogenic acid is one of the most prominent bioactive phenolic acids with great pharmacological, cosmetic and nutritional value. The potential Berula erecta in tissue culture was investigated for production chlorogenic its elicitation combined light different wavelengths low temperature. content samples determined by HPLC-UV, while total compounds antioxidant activity their ethanol extracts were evaluated spectrophotometrically. highest fresh dry biomasses obtained plants grown at 23 °C. This first study which has been identified quantified erecta. 4.049 mg/g DW. It a 28 days after beginning experiment 12 °C under blue light. latter also contained compounds, showed activity. could, potentially, be suitable vitro acid, although many other studies should conducted before implementation on an industrial scale.

Language: Английский

Citations

4