Physicochemically modified peat by thermal and oxidation processes as an active material for purification of wastewaters from certain hazardous pollutants

The physicochemical modification of peat through thermal and oxidation processes was carried out, in order to obtain new, inexpensive and active material for purification of different types of waters. During the modification, surface chemical compounds of Shilov type were formed. Batch adsorption pr...

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Bibliographic Details
Published inHemijska industrija Vol. 71; no. 4; pp. 299 - 306
Main Authors Purenovic, Jelena, Randjelovic, Marjan, Momcilovic, Milan, Purenovic, Milovan, Stankovic, Novica, Andjelkovic, Ljiljana
Format Journal Article
LanguageEnglish
Serbian
Published Belgrade Hemijska Industrija 2017
Association of Chemical Engineers of Serbia
Subjects
Adducts
adsorption-sorption
arsenic
Chemical compounds
Clathrates
Hazardous wastes
Hydrogen sulfide
hydrogen sulphide
Oxidation
Peat
physicochemical modification
Pollutants
Purification
Sulfur
surface groups
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Summary:The physicochemical modification of peat through thermal and oxidation processes was carried out, in order to obtain new, inexpensive and active material for purification of different types of waters. During the modification, surface chemical compounds of Shilov type were formed. Batch adsorption properties and suitability of physicochemically modified peat (PCMP) for odor removal were tested in aqueous solutions of H2S and colloidal sulphur. Additionally, PCMP was tested in the removal of As(V) which is hazardous ingredient in contaminated waters. Possible mechanisms of pollutants binding include interactions, which lead to formation of adducts and clathrates. All these processes are elucidated in detail. The results showed that the obtained material can be used for the removal of sulphide, colloidal sulphur and As(V) from different types of waters.
ISSN:0367-598X
2217-7426
DOI:10.2298/HEMIND160522040P