In Situ Steam-Assisted Synthesis of CTAB-Modified Geopolymer-Based Hectorite for Enhanced Adsorption of Congo Red.

ABSTRACT: For deep purification of wastewater containing anionic dyes. In this study, cetyltrimethylammonium bromide (CTAB)-modified geopolymer-based hectorite was synthesized via a steam-assisted method using depolymerized illite-based geopolymer as the silicon source and CTAB as the modifier, enhancing its adsorption performance for anionic dyes. The product was characterized by methods such as X-ray diffraction, and the effects of parameters such as adsorbent dosage and pH on the adsorption process were investigated. Adsorption experiments revealed that when the CTAB addition was 20%, the adsorption performance for Congo red was optimal (99.79%, 997.92 mg·g^-1), far superior to that of hectorite without CTAB (66.64%, 666.40 mg·g^-1). The adsorption process followed pseudo-seco

SUBMITTER: Chen D 

PROVIDER: S-EPMC12651987 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature