Investigating the Ability of the Modified Carbon Nanotube by Nickel oxide (NiO/CNT Nanocomposite) to Remove Acid blue 9 dye Pollutants from Aqueous Solutions

Subject Areas : Water and Environment

yousef dehghani ¹ , Tahereh navaie Diva ²

1 - MSc., Department of Food Science and Technology, Savadkooh Branch, Islamic Azad University, Savadkooh, Iran.
2 - Assistant Professor, Department of Chemistry, Savadkooh Branch, Islamic Azad University, Savadkooh, Iran. *(Corresponding Author)

Received: 2021-09-28 Accepted : 2022-02-05 Published : 2024-07-22

Keywords: Carbon nanotubes, Nanocomposite, Pollutant, Acid blue 9 dyes, Removal.,

Abstract :

Background and Objective: Synthetic dyes, including the dye agent acid blue 9, are common pollutants and one of the most persistent environmental pollutants. Developing a simple and effective method to eliminate non-degradable pollutants is one of the most important challenges in environmental challenges.

The aim of this study is to evaluate the efficiency of the NiO/CNT nanocomposite in the removal of acid blue 9 dyes from aqueous solutions.

Material and Methodology: In this study, which have been done during spring and summer of 2021, NiO/CNT nanocomposite was prepared using direct coprecipitation method in an aqueous media in the presence of CNTs. The effect of various parameters, including the amount of nanocomposite, aqueous solutions pH, dye concentration, temperature and contact time were studied. Further kinetic and thermodynamic studies have been carried out.

Findings: The highest absorption rate by 0.1 g of adsorbent as the optimal amount  was equal to 98% at pH =2 of the solution after 1-hour contact solution containing dye with absorbent. The results show that the kinetic pseudo-second-order model fits the data. Adsorption isotherms were adjusted with Langmuir model. Thermodynamic parameters, such as ΔG°, ΔH° and ΔS° were calculated and the obtained values showed that the adsorption was spontaneous and endothermic in nature.

Discussion and Conclusion: In this study, a simple and efficient method was presented to remove a resistant pollutant in the environment using NiO/CNT nanocomposite.

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