Humics‐based interpolyelectrolyte complexes for antierosion protection of soil: Model investigation

Panova, I.; Drobyazko, A.; Spiridonov, V.; Sybachin, A.; Kydralieva, K.; Jorobekova, S.; Yaroslavov, A.

Авторы: Panova I., Drobyazko A., Spiridonov V., Sybachin A., Kydralieva K., Jorobekova S., Yaroslavov Alexander
Журнал: Land Degradation and Development
Том: 30
Год издания: 2019
Издательство: John Wiley & Sons Inc.
Местоположение издательства: United States
Первая страница: 337
Последняя страница: 347
DOI: 10.1002/ldr.3228
Аннотация: The aim of the article is to demonstrate a novel polymer‐based technique for stabilization of soil against wind and water erosion. Conventional approaches deal with individual water‐soluble polymers which, being deposited on the soil, are removed from the soil surface after re‐watering. Here we describe an elegant way for soil stabilization via deposition of “interpolyelectrolyte complexes” formed by two oppositely charged water‐soluble polymers. Electrostatic complexation in an aqueous solution of a cationic poly (diallyldimethylammonium chloride) with an excess of water‐soluble anionic bio‐polymers, humic acids, results in formation of a negative non‐stoichiometric interpolyelectrolyte complex (NIPEC). Upon deposition of a NIPEC aqueous solution over soil and drying out, a protective layer (crust) forms on the surface, composed of NIPEC and soil particles, resistant to wind and water erosion. After destruction, the crust is completely restored by re‐watering. The high stability of the NIPEC‐soil crust is due to a NIPEC block structure with hydrophilic free anionic units and hydrophobic mutually neutralized anionic/cationic units, which ensures optimum adsorption on the surface of soil particles and bind them to bigger aggregates. The NIPEC treatment retains the porous structure of soil that favors seed germination and plant development. Being effective absorbent of heavy metals, the NIPEC formulation ensures a normal seed germination in the presence of toxic Cu2+‐ions. Thus, the humics‐based NIPECs ensures anti‐erosion protection and detoxification of soil. Additionally to ecological and agricultural applications, the NIPEC formulations have potential for immobilization of moving sands, conservation of mining dumps, treatment of road slopes, etc.
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Humics‐based interpolyelectrolyte complexes for antierosion protection of soil: Model investigationстатья

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