Volikov Alexander, Karpukhina Evgeniya A, Larionov Konstantin S, Kozlov Daniil A, Perminova Irina V
Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia.
Kurnakov Institute of General and Inorganic Chemistry of RAS, Leninsky Prospect 31, 119991 Moscow, Russia.
Polymers (Basel). 2023 Mar 18;15(6):1514. doi: 10.3390/polym15061514.
The present study proposes a novel application of humic substance-aminosilsesquioxane polyelectrolyte complexes (HS-ASQ) as dust suppressants. These complexes are synthesized through the reaction between humic substances (HS) and 3-aminopropyltriethoxysilane (APTES) in aqueous solution, resulting in the formation of active silanol groups that can bind to mineral surfaces and condense, forming gels. The HS-ASQ compositions were found to have a high sorption capacity for dust particles and could form coatings on their surface without cementing the dust, making them potentially useful for environmental applications. The viscosity of the HS-ASQ compositions can be controlled by adding carboxymethylcellulose (CMC), which also enhances their dust suppression abilities. Different compositions of HS-ASQ were synthesized by varying the proportions of APTES and CMC, and dust treated with these samples was assessed for its resistance to wind erosion using a laboratory-scale setup. Treatment with the HS-ASQ composition resulted in substantial reductions in PM10 and PM2.5 concentrations (particulate matter with aerodynamic diameters of 10 µm and 2.5 µm, respectively) of up to 77% and 85%, respectively, compared to the control.
本研究提出了腐殖质 - 氨基倍半硅氧烷聚电解质复合物（HS - ASQ）作为抑尘剂的一种新应用。这些复合物是通过腐殖质（HS）与3 - 氨丙基三乙氧基硅烷（APTES）在水溶液中反应合成的，反应生成可与矿物表面结合并缩合形成凝胶的活性硅醇基团。研究发现，HS - ASQ组合物对灰尘颗粒具有高吸附能力，并且可以在其表面形成涂层而不粘结灰尘，这使其在环境应用中具有潜在用途。HS - ASQ组合物的粘度可以通过添加羧甲基纤维素（CMC）来控制，这也增强了它们的抑尘能力。通过改变APTES和CMC的比例合成了不同组成的HS - ASQ，并使用实验室规模的装置评估了用这些样品处理的灰尘的抗风蚀性。与对照相比，用HS - ASQ组合物处理后，PM10和PM2.5浓度（分别为空气动力学直径为10 µm和2.5 µm的颗粒物）大幅降低，分别高达77%和85%。
