Process Optimization Studies of Congo Red Dye Adsorption onto Nickel Iron Layered Double Hydroxide Using Response Surface Methodology

Abstract:

Layer double hydroxide materials have many applications in areas such as biomedical, catalytic, sensor, adsorption. Recently, the LDH synthesis methods used have been increasingly developed. In this study, the Ni-Fe LDH material was synthesized by hydrothermal method and parameters affecting CR adsorption were maximized by surface response method (RSM). The results showed that the CR removal capacity reached a maximum value of 244.87 mg/g at a concentration of 136.63 mg/L, pH of 5.94 and reaction time 233.84 min. In addition, ANOVA analysis for the second-order model gave favorable results with high R² (R² = 0.991), F and p values in accordance with the proposed standards, all indicating that this model has significance between experimental variables and predict.

• Periodical: Solid State Phenomena (Volume 298)
• Pages: 83-88
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.298.83
• Online since: October 2019
• Authors: To Uyen T. Dao, Hong Tham T. Nguyen, Do Trung Sy, Khoa Hien Nguyen, Anh Tien Nguyen, Trung Thanh Nguyen, Trinh Duy Nguyen*
• Keywords: Adsorption, Congo Red Dye, Ni-Fe LDH, Optimization, Response Surface Methodology

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