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К вопросу о механизме необратимой сорбции тяжелых металлов гранулированным сорбентом на основе металлургических шлаков

К вопросу о механизме необратимой сорбции тяжелых металлов гранулированным сорбентом на основе металлургических шлаков

Abstract

The sorption characteristics of granular sorbent based on self-scattered slag are compared with those of powdered slag. It is shown that the sorbent granules possess chemical resistance, mechanical strength and diffusion permeability. The sorption process is realized by counterdiffusion of exchangeable cations of the sorbent (calcium, potassium, sodium) and the cations of the sorbate (cerium). The sorbate is included in the structure of the sorbent and is irreversibly fixed on the surface and in the volume of the granules. Compared with granular sorbent, powdered slag has no advantages.

Исследованы сорбционные характеристики гранулированного сорбента на основе саморассыпающихся шлаков сравнительно с порошкообразным шлаком. Показано, что гранулы сорбента обладают химической стойкостью, механической прочностью и диффузионной проницаемостью. Сорбционный процесс реализуется путем противодиффузии обменных катионов сорбента (кальция, калия, натрия) и катионов сорбата (церия). Сорбат входит в структуру сорбента и необратимо фиксируется на поверхности и в объеме гранул. По сравнению с гранулированным сорбентом, порошкообразный шлак не имеет преимуществ.

Keywords

САМОРАССЫПАЮЩИЙСЯ ШЛАК, ГРАНУЛИРОВАННЫЙ СОРБЕНТ, МОДЕЛЬНЫЙ РАСТВОР, СОРБЦИЯ, АЛЮМОКРЕМНЕКИСЛОРОДНЫЙ КАРКАС, ПРОЧНОСТЬ, ДИФФУЗИОННАЯ ПРОНИЦАЕМОСТЬ, КАТИОННЫЙ ОБМЕН

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold