Fugitive dust induced by wind erosion has been a serious environmental problem in many countries. In this research, a plant-derived urease enzyme named soybean, as a cheap and easily available enzyme-induced carbonate precipitation (EICP), is employed to stabilize loose soil-inducing fugitive dust. The tested silty sand soil was retrieved from one of the dust centers of Khuzestan-Iran with a low plasticity index. The treated experiments were prepared by two different methods of mixing and pouring the extract solution with and on the soil with both maximum and minimum densities. After a certain period of time, at which the calcium carbonate precipitation process was completed, unconfined compressive strength tests were conducted to monitor increase in the soil shear strength, treated with EICP. Then, water erosion test was conducted to evaluate resistance of the treated soil against water penetration and soil erosion due to water runoff. Later, trays containing bare and treated soils, obtained from different EICP applications, were sited in a wind tunnel to test their erosion performances. The results indicated that soybean enzyme which is much easier to prepare than the jack bean enzyme, previously suggested by other researchers, can control dust emissions induced by wind erosion.

中文翻译：

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使用天然大豆生物材料减轻风蚀引起的粉砂的粉尘排放

风蚀引起的扬尘已成为许多国家严重的环境问题。在这项研究中，一种名为大豆的植物来源的脲酶作为一种廉价且易于获得的酶诱导碳酸盐沉淀 (EICP)，用于稳定松散的土壤诱导扬尘。测试的粉砂土取自 Khuzestan-Iran 尘埃中心之一，具有低可塑性指数。处理过的实验是通过两种不同的方法制备的，即以最大和最小密度将提取溶液与土壤混合和倾倒在土壤上。在碳酸钙沉淀过程完成一段时间后，进行无侧限抗压强度测试以监测用 EICP 处理的土壤剪切强度的增加。然后，进行水蚀试验以评估处理后的土壤对水渗透和水流失引起的土壤侵蚀的抵抗力。后来，将装有从不同 EICP 应用中获得的裸土和处理过的土壤的托盘放置在风洞中以测试其侵蚀性能。结果表明，大豆酶比其他研究人员先前提出的杰克豆酶更容易制备，可以控制风蚀引起的粉尘排放。