Removal of Pollutants From Sewage With Grinded Shells of Apricot Kernels

Abstract

A review of the literature data on the use of biomass components of apricot trees (Prunusarmeniaca) as a sorption material for the extraction of various pollutants from waste and natural waters is carried out. The parameters of the sorption interaction at which the highest degree of removal of pollutants is achieved are given. It has been shown that it is possible to increase the sorption capacity of apricot biomass components by modifying it with various chemical reagents. It has been determined that the most studied sorption material is the shell of apricot kernels. It is determined that the largest number of publications is devoted to the use of the latter as raw materials for the production of activated carbons. It was revealed that the surface area and the total pore volume of activated carbons from the kernels of apricot fruits depend on the modes of carbonization and activation of raw materials. It is shown that activated carbons are effective sorbents for removing various pollutants (metal ions, dyes, oil and oil products) from aqueous media. It was found that the adsorption isotherms of pollutants are most adequately described in most cases by the Langmuir and Freundlich models, and the kinetics of the process is most often described by the pseudo-second order model.