Sandstorms have been recognized as severe natural disasters worldwide and are currently occurring with increasing frequently due to global warming and land desertification. This study aims to mitigate their development and combat erosion caused by sandstorms and wind by improving sand‐surface stability via enzyme‐catalysed mineralization. It is an environment‐friendly method. The novelty of the reported enzymatically induced carbonate precipitation (EICP) lies in the usage of an enzyme catalyst extracted from soybeans. In contrast to the commonly used method of microbial‐induced carbonate precipitation, which is active at room temperatures between 20 and 30°C, EICP achieves high production efficiency at broader temperatures (ranging from 10 to 70°C). Four methods in appendix to EICP were chosen to solidify desert sands at the test site. Polyacrylamide (PAM) is a harmless and nonionic macromolecular flocculating agent, which forms a hydrogel network in desert sands and has a synergistic effect with EICP. An innovative method combined EICP and PAM and was used to solidify desert sand at a field trial site, realizing high‐performance. Solidifying desert sand field tests demonstrated that the solidification strength of EICP+PAM is 6.0–7.0% higher compared with the EICP method alone under identical conditions. This method could obtain higher resistance for strong wind erosion.

中文翻译：

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酶催化矿化固化沙漠砂的方法

沙尘暴在世界范围内被认为是严重的自然灾害，由于全球变暖和土地沙漠化，沙尘暴目前正在频繁发生。这项研究旨在通过酶催化的矿化作用来改善沙土表面的稳定性，从而减轻沙尘暴的发展并抵抗沙尘暴和风造成的侵蚀。这是一种环境友好的方法。所报道的酶促碳酸盐沉淀（EICP）的新颖之处在于使用了从大豆中提取的酶催化剂。与通常在20至30°C的室温下具有活性的微生物诱导碳酸盐沉淀的方法相比，EICP在较宽的温度（10至70°C）下可实现较高的生产效率。选择了EICP附录中的四种方法来固化测试现场的沙漠沙土。聚丙烯酰胺（PAM）是一种无害的非离子高分子絮凝剂，可在沙漠中形成水凝胶网络，并与EICP具有协同作用。一种结合了EICP和PAM的创新方法，用于在现场试验现场固化沙漠砂，实现了高性能。凝固的沙漠沙场测试表明，在相同条件下，EICP + PAM的凝固强度比单独使用EICP的方法高6.0-7.0％。这种方法可以获得较高的抗强风蚀能力。凝固的沙漠沙场测试表明，在相同条件下，EICP + PAM的凝固强度比单独使用EICP的方法高6.0-7.0％。这种方法可以获得较高的抗强风蚀能力。凝固的沙漠沙场测试表明，在相同条件下，EICP + PAM的凝固强度比单独使用EICP的方法高6.0-7.0％。这种方法可以获得较高的抗强风蚀能力。