Polyaniline/Glauconite Nanocomposite Adsorbent for Congo Red Dye from Textile Wastewater

Abstract

Glauconite (Gl), a naturally occurring clay material, was utilized as an affordable and ecologically friendly adsorbent to explore its capturing capacity towards Congo red (CR) dye from textile industrial waste effluent. To improve adsorption and removal effectiveness, a modification technique utilizing polyaniline (PAN) was investigated. An X-ray diffractometer (XRD), a scanning electron microscope (SEM), and Fourier transformer infrared (FTI-R) were applied as strong familiar characterization techniques for all used adsorbents. The effects of starting concentration, contact duration, adsorbent dose, pH, and temperature on the adsorption process were also studied. The reusability of the adsorbent was studied over four adsorption cycles. The results show that PAN modification of Gl enhances the effectiveness of CR elimination. The clearance efficiency of raw and modified glauconite at 25 °C and pH 7 was 77% and 91%, respectively. The kinetics and isotherms of Congo red dye adsorption were investigated using batch studies to determine the impacts of various experimental conditions. The maximum adsorption capacity of the glauconite/polyaniline (Gl/PAN) nanocomposite rose from 11.9 mg/g for Gl to 14.1 mg/g in accordance with the isotherm analysis, which shows that the Langmuir isotherm properly characterizes the experimental data. The pseudo-second-order model (R2 = 0.998) properly expresses the experimental data. The reusability research proved that the adsorbents may be reused effectively. The overall results suggest that the modified Gl by PAN might be used as a low-cost, natural adsorbent for eliminating CR color from textile effluent.

Photocatalytic Degradation of Methyl Orange and Methylene Blue Dyes by Engineering the Surface Nano-Textures of TiO2 Thin Films Deposited at Different Temperatures via MOCVD

“…The results show that after five reusability cycles, the maintained efficiency for 250 °C and 350 °C TiO 2 films was 52.4% and 74.4%, respectively. The shield generated by dissolved MB molecules on the TiO 2 surface may reduce the MB removal percentage and therefore the retention efficiency [ 37 ]. Figure 6 b illustrates the reusability of the samples for the photodegradation of MB after annealing.…”

Combination of ozone-based advanced oxidation process and nanobubbles generation toward textile wastewater recovery

“…An alarming large production of undesired organic contaminants in the textile industry has become a long-standing issue that deserves special attention (I. Ali et al, 2012;Lapworth et al, 2012;Salah et al, 2022;Verma et al, 2022). Moreover, the diverse class of organic contaminants produced by the textile industry triggered a complexity that led to adverse effects on the human body.…”

Adsorption of Methylene Blue Dye by Cetyltrimethylammonium Bromide Intercalated Polyaniline-Functionalized Montmorillonite Clay Nanocomposite: Kinetics, Isotherms, and Mechanism Study

“…Methylene blue (C 16 H 18 ClN 3 S, MB) is a cationic dye that has been widely used in industry, such as in dyeing cotton, silk and wool [4]. It is a non-biodegradable and hazardous dye that is found in high concentrations in textile effluents [9], and it has a major impact on the health of water bodies and the photosynthesis of microorganisms in the aquatic environment [11]. Therefore, the treatment of effluent with MB dye before discharge is of interest due to its harmful effects on receiving waters [9,11].…”

“…Polyaniline (PAni) as a conducting polymer has attracted much attention because of its scientific and technological interest because of its advantages such as redox property, high conductivity, higher environmental stability and easy preparation [11][12][13]. Moreover, it has a wide future application in water purification [12].…”

“…Salah et al synthesized polyaniline/glauconite nanocomposite for adsorption of Congo red dye from textile wastewater. It was reported that the adsorption capacity reached 14.1 mg•g −1 [11]. PAni/SiO 2 composite was synthesized and applied for methylene blue removal.…”