초록 열기/닫기 버튼
The aim of this study was to develop an eco-friendly deicing agent to reduce the corrosion of steel in roads and structural facilities, as an alternative to non-eco-friendly chloride deicing agents that are widely used throughout the world. The deicing agent developed in this study was prepared by mixing a 2-step concentrated bittern and lactic acid bacterial culture at a volume ratio of 7:3. The freezing point of this eco-friendly deicing agent was –51.4 ± 1.71℃, and the contents of Ca, K, Mg, Na, Cl, and SO4 in the developed deicing agent were 0.012 ± 0.001%, 1.145 ± 0.022%, 4.135 ± 0.218%, 0.584 ± 0.005%, 12.966 ± 0.215%, and 3.494 ± 0.020%, respectively. The 30-minute ice melting test showed an ice melting effect of 106% at -7°C and 135% at -12℃ as compared with the reference materials, NaCl (-7℃) and NaCl/CaCl2 mixed solution (-12℃) respectively. The steel corrosion effects of the developed deicing agent were analyzed over five weeks. The degree of steel corrosion using the newly developed deicing agent showed a reduction to 62% and 52% of that caused by the NaCl solution and the NaCl/CaCl2 mixed solution respectively. The eco-friendly deicing agent developed in this study is expected to contribute to protecting the environment by reducing the side effects of road corrosion and other environmental harm, which is an issue with existing deicing agents.
