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All Journal Indonesian Journal of Chemical Science and Technology
Ramanda Fatwa
State University of Medan
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Materials Science & Nanotechnology

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Effectiveness of Corn Cob (Zea mays L.) Activated Carbon Modified with Cetyl Trimethyl Ammonium Bromide (CTAB) in the Adsorption of Metanil Yellow Ramanda Fatwa; Ratna Sari Dewi
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 9 No. 2 (2026): JULY 2026
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v9i2.72090

Abstract

This study examines the potential of corn cob waste (Zea mays L.) as a raw material for activated carbon to remove Metanil Yellow dye from textile waste. Activated carbon was prepared through a carbonization process at 400°C followed by chemical activation using KOH to expand the pore structure. To optimize the affinity for anionic dyes, the carbon surface was modified with a cationic surfactant, Cetyl Trimethyl Ammonium Bromide (CTAB). FTIR characterization results showed successful modification, characterized by the appearance of C−N group vibrations at wavenumbers 1371 cm−1 and 1217 cm−1. The adsorption test was carried out at a maximum wavelength of 494 nm. The results showed that the adsorption efficiency increased significantly with increasing adsorbent mass and contact time, with the highest efficiency reaching 98-100% in the 90-120 minute time range. This proves that CTAB modification effectively increases the electrostatic interaction between the positively charged adsorbent surface and the negatively charged Metanil Yellow molecules.
Co-Authors Ratna Sari Dewi