Application of nano-iron in treatment of phthalates in sediments or soil

Abstract

The invention discloses an application of nano-iron in treatment of phthalates in sediments or soil, and the added nano-iron can reduce the bio-availability of DBP in sediments/soil and has a good fixing effect on DBP, so that the toxic effect of organic pollutants on organisms is reduced, secondary release to the environment is reduced, the environmental risk is reduced, particularly, when 0.2% of nano-iron is added, the content of available DBP in sediments/soil can be remarkably reduced, degradation of DBP in sediments/soil cannot be inhibited, and the high degradation rate can still be kept.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to the application of nanometer iron in treating phthalates in sediment or soil. Background technique [0002] Phthalate, the abbreviation of Phthalic Acid Esters (PAEs), is the main raw material of plasticizers for plastic products, which can improve the plasticity and strength of plastics, and is an indispensable plastic modification additive . After PAEs enter the environment, they will be accompanied by a series of physical migration, chemical changes, and biological transformation processes, and will continue to migrate and transform in the atmosphere, water, soil / sediment, and organisms. Soil / sediment plays an important role in the migration and transformation of PAEs. In addition, due to the poor water solubility of PAEs, it is more likely to combine with particulate matter and accumulate in large quantities in the substrate, so soil / sediment has become the...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the difficult problem of phthalates (PAEs) in deposits or soils existing in the prior art, and to provide a kind of application of nano-iron in processing depo

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