摘要：The limited resources of natural zeolites make it necessary
to search for and use synthetic products. This paper presents a method
of producing zeolite sorbents resulting from hydrothermal synthesis
in an autoclave. The raw materials used in the syntheses were fluidized-bed
fly ashes derived from the burning of forest biomass and sunflower hulls
and two fly ashes derived from biomass combustion. The raw materials
and zeolite sorbents were characterised using the analysis methods
of phase composition and textural properties of the samples. The sorptive
capacity of the raw materials and zeolite sorbents was determined
by means of cation and anion exchange capacity. The analyses
and research have shown that as a result of the synthesis process
it is possible to obtain the following zeolite phases: sodalite, faujasite,
chabazite. The determined value of the cation and anion exchange capacity
for synthetic zeolite sorbents are greater than those which characterise
natural zeolites.
其他摘要：The limited resources of natural zeolites make it necessary to search for and use synthetic products. This paper presents a method of producing zeolite sorbents resulting from hydrothermal synthesis in an autoclave. The raw materials used in the syntheses were fluidized-bed fly ashes derived from the burning of forest biomass and sunflower hulls and two fly ashes derived from biomass combustion. The raw materials and zeolite sorbents were characterised using the analysis methods of phase composition and textural properties of the samples. The sorptive capacity of the raw materials and zeolite sorbents was determined by means of cation and anion exchange capacity. The analyses and research have shown that as a result of the synthesis process it is possible to obtain the following zeolite phases: sodalite, faujasite, chabazite. The determined value of the cation and anion exchange capacity for synthetic zeolite sorbents are greater than those which characterise natural zeolites.
