Journal of Food, Agriculture and Environment

Polymer composites as effective media for the stabilization of desert dust

Author(s):

Davood Namdar Khojasteh ¹*, Hossein Ali Bahrami ², Mehran Kianirad ³, Mahmood Fazeli Sangani ⁴

Recieved Date: 2018-07-18, Accepted Date: 2018-09-22

Abstract:

The use of biological polymers is considered as an efficient option to control dust storms by forming aggregates with fine dust particles. We report herein the application of three composites as stabilizing agents through field studies. To understand the effect of composites on dust stabilization, several tests, such as penetration test, aggregate stability, and MWD have been applied in Semnan region. The results of penetration test, MWD and aggregate stability showed that durability of three polymers (S₄, S₉ and S₁₀) was less than 7 months in nature. After 5 months, polymers had lost their adhesion properties and had decomposed also after rainfall the aggregate stability was down sharply. The main cause of degradation of these composites was degradation of  xanthan polymer, which made larger aggregate through hydrogen, ionic and covalent bonds with positive and negative charges of clay. It is also likely, that after seven months their impact is lost via decomposition of cellulosic fibers with polymer and calcium carbonate leaching through the soil surface.

Keywords:

Dust storm, stabilization, biological and chemical polymer, Iran

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Journal: Journal of Food, Agriculture and Environment
Year: 2018
Volume: 16
Issue: 3&4
Category: Environment
Pages: 74-79

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