Removal of methylene blue from textile waste water using kaolin and zeolite-x synthesized from Ethiopian kaolin

Abstract

The wastewater generated from textile factories is linked to one of the main water pollution problems; therefore, it is important to reduce the pollutants in industrial effluents before their discharge into environment. The present study was to investigate the appropriateness zeolite-x and kaolin as effective adsorbents for removal of methylene blue from the textile wastewater. Batch adsorption experiments were carried out to assess parameters that influence the adsorption process. The prepared zeolite-x and kaolin were characterized by Fourier Transform Infrared and X-ray diffraction techniques. The results of this study showed that the particle size is 40.77 nm and 0.45 nm kaolin and zeolite-x respectively. The performance of zeolite-x adsorbent is best at the optimum pH 4 with removal efficiency of 97.77% and kaolin adsorbent at pH 6 with removal efficiency of 86.86%. The optimum contact time was obtained at 60 and 80 minutes for zeolite-x and kaolin respectively. While optimum adsorbent dosage was obtained at 0.4 and 0.6 grams with removal efficiency of 97.12% and 87.75% for the zeolite-x and kaolin adsorption experiment respectively. The confirmed square sum errors values are 1.0×10 -4 and 1.0×10 -3 for zeolite-x and kaolin, respectively. The Adsorption isotherms results have well fitted to Freundlich isotherm than Langmuir isotherm. The adsorption kinetics results were best fitted the pseudo second order model. The result shows that the zeolite-x has high removal efficiency than kaolin at the same operating conditions. Application of this method can be economically, environmentally, and socially feasible to address wastewater problems. Further research has to be carried out on the removal capacity of this adsorbent for organic dyes not only from the textile industry but also from leather industries and soap industries.

Adsorption of Dyes Using Natural Minerals: A Review

“…Figure 8 : Influence of initial concentration on the eliminating of methylene blue (MB) by kaolin and ,zeolite-x (zemedkun Mulushewa et al,2021)…”

Factors influencing the photodegradation of acid orange 8 by nitrocellulose membranes

“…The dye concentration in the wastewater may be between 50 and 1000 ppm, however, even a very low concentration (10-50 ppm) will produce strong colors (Koyuncu et al, 2004). The global production of azo dyes exceeded 700,000 tons, and 10-15% of the dyes were lost during the dyeing process and discharged with wastewater (Mulushewa et al, 2021). These compounds can change the pH and chemical composition of water bodies (Umar et al, 2021) and can affect the safety of the entire ecosystem via bioaccumulation (Shi et al, 2021).…”

“…It is necessary to adopt different methods to treat textile wastewater (Yakar et al, 2020). Traditional treatment methods such as electrodialysis, ion exchange, reverse osmosis, microfiltration and ultrafiltration, oxidation and solvent extraction, etc., are relatively expensive and cannot effectively remove dyes (Mulushewa et al, 2021). The advanced oxidation method can efficiently generate active oxygen, such as hydroxyl radicals and superoxide anion radicals, and can quickly oxidize and remove a variety of organic pollutants in water under certain conditions (Aleboyeh et al, 2003;Chong et al, 2010;Macías-Quiroga et al, 2020).…”

High Surface Area Nanoporous Activated Carbons Materials from Areca catechu Nut with Excellent Iodine and Methylene Blue Adsorption

“…Some of the common adsorbents used for MB dye removal include carbon-based materials (e.g., activated carbon), polymeric materials (e.g., polystyrene), minerals (e.g., zeolite), and metal-organic framework (MOF), etc. [10,[14][15][16]. Carbon materials have attracted increasing research attention in recent years because of their unique internal structures, excellent performance, and extensive application prospects.…”