Surface Modification of Magnetic Nanoporous Silica with Carbon Based Materials for Enhancing Organic Dye Removal
Authors: Quach Qui , Quach Ngan , Adamy Kade , Abdel-Fattah Tarek M 
Published: November 2022

The issue of wastewater from the dyeing industry entering the environment has significantly impacted both humans and other species. The dye blocks the photosynthesis process of aquatic plants and causes oxygen depletion in the marine environment. The dye is difficult to remove from wastewater due to their aromatic chemical structure. When the dye enters to human body, it can cause cancer, cell damage, and life-threatening conditions. Different methods have been investigated to remove the dye such as precipitation, photocatalytic, ion exchange, and membrane filtration. Those methods were difficult to apply on wide scale due to either their high cost or low efficiency. Adsorption is still an economical and effective method due to the cheap production cost and the reusability of the materials.
Nanomaterials have great promises in improving many issues related to energy, catalysis, biomaterials, sensing applications and designing novel adsorbent materials [1-31]. Nanosize adsorbent materials have been utilized and great affinity for removing inorganic and organic species.
In this study, we develop a new method of modifying and activating the magnetic zeolite Y, as a nanoporous adsorbent by utilizing cetyltrimethyl ammonium bromide (CTAB). We applied mechanochemical synthesis method to combine CTAB with magnetic zeolite Y. The composite was applied to adsorb methylene blue. The adsorbing efficiency was monitored by UV-Vis spectrophotometer. The study showed that at 500 mg/L, the composite adsorbed 12% of methylene blue. At 1000 mg/L and 5000 mg/L, the composite adsorbed 71% and 100% of methylene blue, respectively.

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