Biotechnological Applications of the Ubiquitous Fungus Penicillium sp. 8L2: Biosorption of Zn(II) and Synthesis of ZnO Nanoparticles as Biocidal Agents

Sustainability, Journal Year: 2025, Volume and Issue: 17(6), P. 2379 - 2379

Published: March 8, 2025

In this study, the capacity of ubiquitous filamentous fungus Penicillium sp. 8L2 to remove Zn(II) ions present in synthetic solutions was studied and optimal operating conditions were obtained based on a response surface methodology (RSM). The contact time optimized through kinetic tests. Equilibrium tests then carried out, which allowed biosorption isotherms be for several mathematical models. At same time, fungal cell extract transform metal into ZnO nanoparticles with biocidal evaluated. Its inhibitory five microbial strains determined. mechanisms nanoparticle synthesis characterized by different crystallographic, spectrophotometric microscopic analytical techniques. It confirmed that bound superficially but also periplasmic space strong bond phosphate groups, both stage during consolidation nanoparticles. addition, presence hydroxyl, amino, carbonyl methylene groups identified, could promote nanoparticles, since some them have reducing nature. kinetics showed occurred two stages, first very fast second slower. identified maximum 52.14 mg/g Langmuir model under conditions: 5 days, pH 5.6 0.2 g/L biomass dose. success biological route an average size 18 nm obtained. data good inhibition ability against tested microorganisms, values ranging from 62.5 1000 µg/mL. is promising microorganism field heavy applied biotechnology.

Language: Английский

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Quorum sensing luxI/R genes enhances cadmium detoxification in Aeromonas by up-regulating EPS production and cadmium resistance genes

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: unknown, P. 137959 - 137959

Published: March 1, 2025

Language: Английский

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Enhancement of Tetradesmus obliquus Adsorption for Heavy Metals Through Lysine Addition: Optimization and Competitive Study

Water, Journal Year: 2025, Volume and Issue: 17(7), P. 935 - 935

Published: March 22, 2025

Heavy metal wastewater often contains multiple ions, and competition among them reduces the adsorption efficiency of microalgae. Enhancing this is crucial for improving heavy removal. This study optimized lysine addition to facilitating formation a ternary complex between microalgae, lysine, metals, thereby enhancing in both single- mixed-metal systems. In single-metal system at 64 mg/L, improved removal rates copper, zinc, cadmium by 13.96%, 41.21%, 33.26%, respectively. binary systems (Cu-Zn, Cu-Cd, Cu-Pb) 32 increased copper 11.81%, 15.71%, 25.25%, while cadmium, lead 15.41%, 12.51%, 3.93%, Competitive analysis revealed that most strongly inhibited adsorption, significantly suppressed zinc adsorption. Mechanistic investigations using 3D-EEM, FTIR, XPS demonstrated humic substances extracellular polymeric (EPSs) microalgae play key role binding. interaction increases number carboxyl functional groups on cell surface, microalgae’s capacity adsorb metals.

Language: Английский

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An Investigation of the Impact of Flocculants on Process Optimization and Floc Properties in Chlorella vulgaris FACHB-15 Harvesting

Water, Journal Year: 2025, Volume and Issue: 17(7), P. 932 - 932

Published: March 22, 2025

This study systematically compared the harvesting efficiency and flocculation mechanisms of a bioflocculant (chitosan) chemical flocculant (Al2(SO4)3) for Chlorella cells. For first time, divergent underlying floc structure formation between two flocculants were elucidated by analyzing EPS distribution dynamic changes in microalgal surface functional groups. By optimizing critical operational parameters—including dosage, pH, biomass concentration—the optimal dosages chitosan Al2(SO4)3 determined as 0.5 mg/L 90 mg/L, respectively. Under pH 6, both achieved over 99% within 30 min. Notably, at dosage 3 chitosan-formed flocs exhibited denser structures, stronger adhesion, tendency to aggregate into spherical clusters Al2(SO4)3-induced flocs. Beyond identifying ideal conditions flocculation, this work provides novel insights role groups mechanisms, offering theoretical foundations practical guidance efficient harvesting. The findings hold significant implications applications advancing environmentally sustainable technologies.

Language: Английский

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Adsorption of Sb(III) from Solution by Immobilized Microcystis aeruginosa Microspheres Loaded with Magnetic Nano-Fe3O4

Water, Journal Year: 2024, Volume and Issue: 16(5), P. 681 - 681

Published: Feb. 26, 2024

In this study, a renewable and reusable immobilized Microcystis aeruginosa microsphere loaded with magnetic Nano-Fe3O4 composite adsorbent material is designed to study the treatment of wastewater containing heavy metal Sb(III). Through static absorption experiments combined various characterization methods, article studies process mechanism Sb(III), investigates optimal preparation conditions environmental influencing factors. The results show that for microspheres materials are 50.0% mass fraction suspension, 1.5% Nano-Fe3O4, 2.5% sodium alginate. When pH solution 4, reaction temperature 25 °C, dosage 8.5 g/L, removal rate Sb(III) highest, reaching 83.62% within 120 min. adsorption conforms pseudo-second order kinetic model Langmuir isotherm model, mainly characterized by chemical surface complexation. Therefore, has been proven be an efficient Sb (III) material.

Language: Английский

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Magnetically recyclable Cu2+ doped Fe3O4@biochar for in-situ inactivation of Microcystis aeruginosa: Performance and reusability

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 907, P. 167903 - 167903

Published: Oct. 17, 2023

Language: Английский

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Phycoremediation of emerging contaminants and heavy metals from industrial wastewater: A sustainable green approach for bioeconomy

Bioresource Technology Reports, Journal Year: 2024, Volume and Issue: 27, P. 101920 - 101920

Published: Aug. 2, 2024

Language: Английский

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Marine microalgae for bioremediation and waste-to-worth valorization: recent progress and future prospects

Deleted Journal, Journal Year: 2024, Volume and Issue: 1(1)

Published: Oct. 8, 2024

Abstract In the quest for sustainable environmental solutions, marine microalgae emerge as powerful allies in bioremediation and biomass valorization endeavors. This review navigates through various facets of utilization, starting with isolation, screening, identification techniques, which lay foundation understanding strain diversity capabilities. Delving deeper, mechanisms performed by are elucidated, showcasing natural capacity to cleanse polluted environments via biosorption, bioaccumulation, biodegradation. Furthermore, waste-to-worth is explored, comprehensive discussions on conversions into biofuels, bioplastics, high-value products, animal feed. As one way forward, emerging advancements genetic engineering enhance pollutant removal capacities presented alongside development consortia integrated waste treatment processes. multidimensional approach highlights ultimate potential valorization, laying groundwork a future achieved working nature, hand-in-hand.

Language: Английский

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Maximizing Heavy Metal Removal and Precious Metal Recovery with Innovative Biowaste-Derived Biosorbents and Biochar

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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Two-step cultivation of Neochloris oleoabundans in a novel horizontal thin-layer algal reactor: Interplay of pH and dissolved inorganic carbon

Biochemical Engineering Journal, Journal Year: 2024, Volume and Issue: 205, P. 109244 - 109244

Published: Feb. 9, 2024

Language: Английский

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