Electricity could "save" the coastline.

With approximately 40% of the world's population living in coastal areas, coastal erosion is a pressing global issue. However, researchers from Northwestern University in the US have just discovered that applying a low-voltage electric current to beach sand can create sustainable, natural defenses against the relentless onslaught of waves and rising sea levels.

Erosion along Australia's Gold Coast

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According to research recently published on StudyFinds, applying an electric current to seawater-saturated sand leads to the formation of mineral deposits that bind the sand particles together. Lower voltages (2.0-3.0V) primarily produce calcium carbonate, while higher voltages (4.0V) facilitate the formation of magnesium hydroxide and hydromagnesite. The treated sand showed a significant increase in strength, with some samples becoming as solid as virgin concrete.

This process also significantly reduces the permeability of sand, making it more water-repellent. Although this study has some limitations, it has introduced a novel approach to coastal erosion mitigation that may be more sustainable, cost-effective, and adaptable than traditional methods.

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HANH CHI

Source: https://www.sggp.org.vn/dien-co-the-cuu-bo-bien-post756005.html