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61,005 resultsShowing papers similar to Spirulina platensis Immobilized Alginate Beads for Removal of Pb(II) from Aqueous Solutions
ClearHigh-efficient biosorbent of Pb2+ derived from the organic frameworks of Cladophora rupestris
Researchers developed an adsorbent material from the green alga Cladophora rupestris to remove lead from water. The organic framework derived from the alga showed high lead-binding capacity across a range of conditions. Algae-based biosorbents offer a low-cost, renewable alternative to conventional materials for removing toxic heavy metals from contaminated water.
Evaluation of Efficient Pb Removal from Aqueous Solutions using Biochar Beads
Researchers developed alginate-biochar bead composites to improve the removal of lead from water compared to powdered biochar alone. The beads were easier to separate from solution and maintained high removal efficiency. This approach could make biochar-based heavy metal remediation more practical for real-world water treatment applications.
The remediation potential and kinetics of Pb2+ by the organic frameworks of Cladophora rupestris
This study produced an organic framework from the freshwater alga Cladophora rupestris for adsorbing lead (Pb2+) from water, characterizing its sorption capacity and kinetics. Algae-based biosorption materials offer low-cost, sustainable approaches to removing heavy metals from contaminated water, with relevance to treating co-polluted environments where plastics and metals occur together.
Using Spirulina platensis as a natural biocoagulant for polystyrene removal from aqueous medium: performance, optimization, and modeling
Researchers tested Spirulina platensis, a type of blue-green algae, as a natural coagulant for removing polystyrene microplastics from water. By optimizing conditions like pH, contact time, and dosage, they achieved significant removal of the plastic particles from aqueous solutions. The study suggests that natural biocoagulants could offer an eco-friendly approach to addressing microplastic contamination in water.
Enhancement of Pb(II) Adsorption by Aged Microplastics in the Presence of Microalgae: Kinetic and Mechanistic
Researchers investigated how UV light, potassium permanganate, and sodium hydroxide aging treatments affect lead (Pb(II)) adsorption by PET microplastics, and examined the additional influence of the microalga Microcystis aeruginosa. Aging increased adsorption capacity through greater surface functional groups and porosity, while microalgae further enhanced Pb(II) uptake via extracellular polymeric substances, suggesting that algal presence amplifies microplastics as heavy metal carriers in aquatic environments.
Exploring the Adsorption of Pb on Microalgae-Derived Biochar: A Versatile Material for Environmental Remediation and Electroanalytical Applications
Researchers developed biochar from the marine microalga Nannochloropsis sp. at 350 degrees C and found it outperformed nutshell-derived biochar for adsorbing lead (II) ions in aqueous solution under all tested conditions including varying pH, ionic strength, and dissolved organic matter. The microalgae-derived biochar also improved voltammetric lead detection sensitivity by twofold when applied to screen-printed electrodes.
Roles of polystyrene micro/nano-plastics as carriers on the toxicity of Pb2+ to Chlamydomonas reinhardtii
Researchers found that nano-sized polystyrene plastics intensified lead toxicity to green algae by facilitating internalization of absorbed lead, while micro-sized plastics reduced lead bioavailability through competitive adsorption, revealing size-dependent carrier effects.
Utilizing Chlorella vulgaris algae as an eco-friendly coagulant for efficient removal of polyethylene microplastics from aquatic environments
Researchers tested the green algae Chlorella vulgaris as an eco-friendly coagulant for removing polyethylene microplastics from water. Using optimized experimental conditions, they achieved a removal rate of nearly 99% under the best parameters. The study suggests that algae-based coagulation offers a cost-effective and sustainable alternative to chemical methods for cleaning microplastic-contaminated water.
Over-Produced Extracellular Polymeric Substances and Activated Antioxidant Enzymes Attribute to Resistance of Pb(II) for Algal–Bacterial Granular Sludge in Municipal Wastewater Treatment
Researchers studied how lead contamination affects algal-bacterial granular sludge used in wastewater treatment. They found that while moderate lead concentrations were tolerable, higher levels disrupted the symbiotic relationship between algae and bacteria, reducing nitrogen and phosphorus removal performance. The study reveals that the sludge resists lead toxicity by overproducing extracellular polymeric substances and activating antioxidant enzymes.
Enhancement of Pb(II) adsorption by aged polyethylene terephthalate microplastics in the presence of microalgae: kinetic and mechanistic
UV, permanganate, and alkaline aging treatments all increased PET microplastic adsorption capacity for lead, and Microcystis aeruginosa microalgae further enhanced Pb(II) adsorption by coating PET surfaces with organic matter, demonstrating how environmental aging and biofouling amplify MP-metal interactions.
Flocculation Properties of Acrylamide‐Grafted Tamarind Polysaccharide on Microplastics and Heavy Metals Ions
Researchers created a modified polysaccharide derived from tamarind — a natural plant material — that acts as an effective flocculant, clumping together PVC microplastics and lead ions from water so they can be removed. Under optimized conditions, the material removed over 91% of PVC microplastics and over 93% of lead ions, with even better performance when both contaminants were present together. This bio-based flocculant offers a sustainable option for treating water contaminated with both microplastics and heavy metals simultaneously.
Algae Based Solutions for Polluted Environments to Restore Ecosphere Equilibrium
This review examined algae-based bioremediation solutions for polluted environments, finding that algae's diverse metabolic capabilities make them effective at removing pollutants including heavy metals, organic compounds, and microplastics from contaminated water and soil.
Microplastic removal in aquatic systems using extracellular polymeric substances (EPS) of microalgae
Researchers tested whether extracellular polymeric substances produced by microalgae could remove microplastics from water. Among four microalgae strains tested under stress conditions, Spirulina produced the most polymeric substances and formed the largest aggregates with microplastic particles. The study suggests that microalgae-based bioremediation could offer a sustainable, low-cost approach to reducing microplastic contamination in water sources.
Strategy comparison for purifying phycocyanin from microplastic-contaminated Spirulina platensis: A dual evaluation of product quality and microplastic removal
Researchers developed integrated purification strategies combining activated carbon adsorption and ammonium sulfate precipitation to recover phycocyanin from microplastic-contaminated Spirulina platensis, finding that the AC-AS method reduced polyethylene, polypropylene, nylon-6, and PET residues to just 2.81% while maintaining food-grade purity.
Conversion of the styrofoam waste into a high-capacity and recoverable adsorbent in the removing the toxic Pb(II) from water media
Researchers chemically modified waste styrofoam — a common plastic pollutant — into a magnetic adsorbent capable of removing toxic lead (Pb²⁺) ions from water, achieving around 90% removal efficiency. This work shows that plastic waste can be repurposed into useful water-treatment materials, offering a dual benefit of reducing plastic waste while cleaning heavy metal contamination.
Factors and mechanisms regulating heavy metal phycoremediation in polluted water
Researchers reviewed how microalgae remove heavy metals from polluted water (a process called phycoremediation), identifying factors like algae species, cell surface chemistry, and metal concentration as key influences, and highlighting genetic engineering and nanoparticle modification as promising strategies for scaling the technology to real-world water treatment.
Algae-based green AgNPs, AuNPs, and FeNPs as potential nanoremediators
This review covers algae-derived gold, silver, and iron nanoparticles as green, eco-friendly nanomaterials for environmental remediation, summarizing their ability to degrade, adsorb, or convert biological, organic, and inorganic pollutants. The authors position algae-based synthesis as a sustainable alternative to chemically produced nanoparticles.
Interplay of plastic pollution with algae and plants: hidden danger or a blessing?
Researchers tested the ability of three microalgae species to remove microplastics from water through bioadhesion, finding that all three species could adsorb particles onto their surfaces. Removal efficiency depended on particle size, surface charge, and algae cell morphology.
Bioremediation of Metal-Polluted Industrial Wastewater with Algal-Bacterial Consortia: A Sustainable Strategy
Researchers evaluated the use of bacterial and algal consortia for bioremediation of metal-polluted industrial wastewater. The study found that combinations of Bacillus pakistanensis, Lysinibacillus composti, and Cladophora glomerata were effective at reducing heavy metal concentrations and improving wastewater quality in a two-week experiment.
Evaluation of Chlorella vulgaris biosorption capacity for phosphate and nitrate removal from wastewater
Researchers found that the common green microalgae Chlorella vulgaris can effectively remove phosphate and nitrate from wastewater through a natural adsorption process, with optimal removal at neutral pH and 24-hour contact time — offering a low-cost, environmentally friendly alternative to chemical water treatment.
Adsorption Phenomenon of Arundinaria alpina Stem-Based Activated Carbon for the Removal of Lead from Aqueous Solution
Researchers found that activated carbon prepared from locally sourced Arundinaria alpina bamboo effectively removed lead from aqueous solution, with removal efficiency influenced by solution pH, initial lead concentration, and adsorbent dose.
Impacts of polyethylene microplastics on the microalga, Spirulina (Arthrospira platensis)
This study examined how polyethylene microplastics affect Spirulina, a widely cultivated blue-green algae used in food and supplements. Researchers found that at higher concentrations, microplastics reduced Spirulina growth and caused oxidative stress, while the algae also physically entangled with the plastic particles. The findings suggest that microplastic contamination could threaten both natural algal ecosystems and the commercial production of this important food source.
Sequestration of Lead Ion in Aqueous Solution onto Chemically Pretreated Pycnanthus angolensis Seed Husk: Implications for Wastewater Treatment
Chemically pretreated Pycnanthus angolensis seed husk was evaluated as a low-cost biosorbent for lead removal from contaminated water, with characterization of the activated material and optimization of adsorption conditions demonstrating effective Pb(II) sequestration.
Experimental Study on Removal of Iron,Manganese and Copper from Waterby Microalgae
Researchers tested four types of microalgae for their ability to remove iron, manganese, and copper from water, finding that all could effectively absorb these metals. Microalgae show promise as low-cost, biological water treatment agents for removing heavy metals often co-occurring with microplastic pollution.