スピルリナはポリスチレンを除去する天然の凝固剤として働く

As we all know, spirulina has always been regarded as a high-protein nutritional supplement, there is no shortage of various spirulina powder, spirulina tablets, spirulina capsules of various supplements, such as the manufacturer of bivitae. Today we follow andy to learn about the application of spirulina in a new area of research: optimization and modeling experiments of spirulina as a natural biological coagulant to remove polystyrene from water media.

スピルリナ acts as a natural biological coagulant to remove polystyrene from aqueous solutions

Microplastics (MPs) are newly discovered pollutants that are caused by the decomposition of plastics and their release into the aquatic environment. The focus of the research in this paper is the removal of polystyrene (PS) from aqueous solutions using the natural biological coagulant Spirulina. The study looked at several key variables, including initial PS levels of 100 to 900 mg L-1, pH levels of 4 to 10, contact times of 20 to 40 min, and doses of 50 to 250 mg L-1 for Platinella grapes. Finally, the data analysis shows that the quadratic model fits the experimental results best.

The impact of plastic pollution on global crises

The paper begins by highlighting the serious impact of plastic pollution on the global crisis and the serious threat it poses to human health. It is also explained that plastics may decompose under certain environmental conditions to form tiny particles called Mps. The increase in plastics in our lives has caused a lot of concern in recent years, whether from the macro or onlookers level, MPs size is less than 5mm, exist in various forms in the environment, and these pollutants are discharged into the environment through various forms. It has to be admitted that the primary MPs is deliberately made. Once in the organism, these pollutants can cause endocrine disruption, which in turn affects activity, reproduction and growth and, in severe cases, increases the likelihood of cancer. Several studies have provided evidence that MPs are widespread in the world’s oceans. Among them, PS is a kind of Mps, a special microplastic containing styrene and benzene monomers, and both of these substances are considered carcinogens, causing great harm to aquatic organisms and humans.

Traditionally, microplastics have been removed by a variety of methods including chemical, physical and biological processes. However, compared with chemical reagents in water pollution treatment, natural coagulants have considerable advantages.

These are somewhat specific in: biodegradability, minimal toxicity, reduced residual sludge production and economic feasibility. In addition, natural coagulants are more sustainable and environmentally friendly. Natural coagulants are renewable resources and do not contain any harmful chemicals that may have long-term effects on the environment and health. In addition, the use of natural coagulants often reduces residual sludge and thus waste generation and disposal costs.

Overall, the use of natural coagulants can promote more sustainable methods of water treatment and contribute to a healthier environment. More recently, the use of biological methods, such as algae, has shown clear potential to solve the problem. Using biomagnification to remove pollutants minimizes the formation of toxic by-products, which ultimately leads to cleaner ecosystems. In addition, algae are rich in nutrients, minerals, rhamnoses, polyunsaturated fatty acids, omega-6, trace elements and easily digestible enzymes. After use, algae substances can also be used as fuel, fertilizer and medicine to prevent secondary pollution. Because of its rich nutrient content and ecological friendliness, as a natural coagulant, it facilitates the flocculation of Mps.

These findings show that S. platensis has a significanteffect on removing PS from the aquatic environment. Algae can serve as a convenient andeco-friendly method, replacing chemical coagulants, to effectively remove MPs from theaquatic environment.

The final experimental data show that the new natural biological coagulants can effectively remove PS from water, and confirm that microalgae provide a practical and environmentally friendly alternative to the effective removal of chemical coagulants.

References

Mohaddeseh Eydi Gabrabad, Mohammadreza Yari & Ziaeddin Bonyadi Scientific Reports volume 14, Article number: 2506 (2024) ：Using スピルリナ as a natural biocoagulant for polystyrene removal from aqueous medium: performance, optimization, and modeling.

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