Adsorption Performance of Dyes Over Zeolite for Textile Wastewater Treatment

• Published in: Ecological chemistry and engineering. S Vol. 28; no. 3; pp. 329 - 337
• Main Authors: Hammood, Zaman Ageel, Chyad, Tasnim Fahim, Al-Saedi, Rasha
• Format: Journal Article
• Language: English
• Published: Opole Sciendo 01.09.2021; De Gruyter Poland
• Subjects: Adsorbents; Adsorption; agitation; Aqueous environments; Color removal; Colour; Dyes; fabrics; Industrial wastes; Industrial wastewater; Industrial wastewater treatment; Isotherms; Parameters; Pollutants; reactive dyes; Removal; sorption isotherms; synthetic zeolite; Textile industry wastewaters; textile mill effluents; textile wastewater; Toxicity; Visibility; Wastewater treatment; Wastewater treatment plants; Water treatment; Zeolites
• ISSN: 2084-4549; 1898-6196; 2084-4549
• DOI: 10.2478/eces-2021-0022

Removal of textile dyes from wastewater have recently attracted much attention, due to the toxicity, difficult visibility, and thereby the negative consequences on the aqueous environment. Therefore, there have been diverse promising new techniques such as adsorption for dyes removal from industrial wastewater. Compared to the highly cost treatment techniques, removal of dyes using the adsorption process is relatively simple and requires less cost. Synthetic zeolite was used in this research as a high capacity nano-adsorbent for the removal of reactive dyes from coloured wastewater. The impact of main parameters: dose of adsorbent (0.0025 to 0.02 g), pollutant concentration (25 to 200 mg/L), contact time (10 to 120 minutes), degree of agitation (25 and 300 rpm), and solution pH (2 to 8) on adsorption performance of the synthesised zeolite was investigated. The optimum values of these parameters to remove dyes efficiently at 90 % removal were 0.02 g, 200 mg/L, 80 min, 300 rpm, and 6-7 respectively. Also, two models were evaluated, the Langmuir and Freundlich isotherms. Langmuir isotherm was more efficient for representing the data than the Freundlich. The results of the Langmuir isotherm gave = 0.08 L/mg, = 6.02 mg/g, and = 0.98, which fitted to the adsorption data of zeolite. Reactive dye adsorption by synthetic zeolite is a vital tool in identifying the fate of dye removal from industrial wastewater treatment plants.