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Abstract

The present study reports a green synthesis method for ordered MCM-41 materials from coal fly ash at room temperature during 24 h of reaction with Si/Al ratio 40, 50, and 60 using cetyltrimethylammonium bromide (CTAB) as template. The surfactant was removed by calcination at 550°C for 4 hours with heating rate 1°C/minute. The material properties of calcined MCM-41 was characterized by XRD, SEM, and BET. The MCM-41 material was applied as an adsorbent in the tapioca wastewater treatment. The XRD analysis results showed that the Si/Al ratio influence the crystallinity of product. The crystallinity of MCM-41 was increased by increasing Si/Al mole ratio. The obtained MCM-41 adsorption capacity for tapioca wastewater treatment was 15.92 mg/g.