In order to solve the problem of coal dust pollution and further improve the dust suppression performance of microbial dust suppressant, a surfactant-microbial dust suppressant is prepared through the addition of surfactant to microbial dust suppressant. The optimal formula is as follows: mineralized bacteria (OD₆₀₀ ≈ 1.6) cultivated for 48 h, 0.5 mol/L of cementing fluid and 0.08% cocamidopropyl betaine (CAB). Compared with microbial dust suppressant, surfactant (CAB)-microbial dust suppressant has better anti-evaporation and wind erosion resistance. Molecular dynamic simulations and contact angle experiments verified the improvement of the wettability of microbial dust suppressants by surfactants. XRD and SEM-EDS results show that calcium carbonate precipitates in coal dust treated with CAB-microbial dust suppressant, which can consolidate the coal dust particles into a whole. In summary, the addition of surfactants improves the dust suppression efficiency of microbial dust suppressants.

为了解决煤粉尘污染的问题，进一步提高微生物粉尘抑制剂的抑尘性能，通过在微生物粉尘抑制剂中添加表面活性剂来制备表面活性剂-微生物粉尘抑制剂。最佳公式如下：矿化细菌（OD ₆₀₀ ≈1.6）培养48小时，用0.5 mol / L的固井液和0.08％的椰油酰胺基丙基甜菜碱（CAB）培养。与微生物粉尘抑制剂相比，表面活性剂（CAB）-微生物粉尘抑制剂具有更好的抗蒸发性和抗风蚀性。分子动力学模拟和接触角实验证明表面活性剂可改善微生物抑尘剂的润湿性。XRD和SEM-EDS结果表明，用CAB-微生物抑尘剂处理后的煤尘中有碳酸钙沉淀，可将煤尘颗粒固结成一个整体。总之，表面活性剂的添加提高了微生物抑尘剂的抑尘效率。