Authors: Marwa F. Abdul Jabbar and Yousif Amer Kadim
DOI: https://doi.org/10.48103/jjeci8212025
JORDANIAN JOURNAL OF ENGINEERING AND CHEMICAL INDUSTRIES (JJECI)
Pages: : 276-289
Highlights
- The factors that affect adsorption were the pH of the solution, the concentration of Congo red (10-50 ppm), the quantity of adsorbent (0.5g/l-4 g/l), and the particle size (<300μm-1.18mm).
- Sunflower husk shows more performance for color reduction than spend tea leaves
- The removal percentage increases with decreasing dye concentration and particle size, while it also increases with a greater amount of adsorbent
- The maximum removal efficiency was 89%, attained with 0.4g of sunflower husk per 100ml of solution, a Congo red dye concentration of 10ppm, a particle size of less than 300μm, and a pH of 3.
Abstract
This study investigates the utilization of spent black tea leaves and sunflower husks as adsorbents for the removal of Congo red dye from wastewater. Researchers examined numerous factors to determine their impact on removal efficiency. These factors were taken into account: the pH of the solution, the concentration of Congo red (10-50 ppm), the quantity of adsorbent (0.5g/l-4 g/l), and the particle size (<300μm-1.18mm). As the concentration of Congo red and size of the adsorbent both raises, the experimental findings showed that the percentage removal decrease, while as adsorbent dose increase the removal percent increase. The studies also showed that waste tea leaves were less effective in removal than sunflower husk. The optimal conditions were 20 ppm dye concentration, 4 g/L adsorbent dosage, and particle size < 300 µm, resulting in removal efficiencies of 84% (tea leaves) and 89% (sunflower husk) respectively. The kinetic analysis results showed that the pseudo-second-order kinetic model best describes the adsorption process. Also, looking at the equilibrium data showed that the Langmuir isotherm model was the best fit of the isotherm models that were tested.
Paper type: Research paper
Keywords: Adsorption, Dye pollution, Sun flower husk, Spent tea leaves, agricultural waste adsorbents,
Citation: Marwa F. Abdul Jabbar and Yousif Amer Kadim ” Comparative Study of Congo Red Dye Removal Using Sunflower Husk and Spent Tea Leaves” Jordanian Journal of Engineering and Chemical Industries, Vol. 8, No.3, pp:276-289 (2025).
