2023

Gorgievski, Milan 
Božić, Dragana
Marković, Miljan 
Štrbac, Nada 
Grekulović, Vesna 
Božinović, Kristina 
Zdravković, Milica 

Scientific Technical Union of Mechanical Engineering Industry-4.0, Bulgaria

Proceedings - XX Jubilee International Scientific Congress, winter session - Machines. Technologies. Materials 2023, 08–11.03.2023 Borovets, Bulgaria, 2023, 36-38

VI

1 (25)

36

38

English

M31 - Invited lecture at an international conference, printed in full (invitation letter required)

In this paper, the results of the DTA-TGA, SEM-EDS, and FTIR analysis of the corn silk are presented. The DTA-TGA analysis shows that the decomposition of corn silk has several stages which are manifested with corresponding peaks on obtained DTA-TGA curves. SEM-EDS analysis was performed before and after the adsorption of copper ions. It has shown that untreated corn silk has a non-uniform structure, consisting of channels and cavities of irregular orientation, which facilitates the penetration of the water phase into the adsorbent structure, and incorporation of copper ions in the internal active sites. After the adsorption of Cu2+ ions, the structure becomes more compact, and uniform, as a result of the incorporation of copper ions into the molecular structure of the corn silk. FTIR analysis shows that ion exchange is not the dominant mechanism of binding copper ions to the active sites in the molecular structure of the corn silk, but also chemisorption and physical adsorption is present.

corn silk, characterization, DTA-TGA, SEM-EDS, FTIR, copper ions

ISSN

2535-0021
2535-003X

URI

http://www.mtmcongress.com/winter/sbornik/1-...
https://repozitorijum.tfbor.bg.ac.rs/handle/...