TY - JOUR ID - 235391 TI - Application of Low-Cost Adsorption Technique on Organic Pollutant Dye Removal by Bio-Waste Adsorbents JO - Egyptian Journal of Chemistry JA - EJCHEM LA - en SN - 0449-2285 AU - El-Refay, Heba Mohamed AU - Raslan, Asmaa M. AU - Attia, A.M. E. AD - Yousef Abbas Str., Nasr City, Cairo, Egypt AD - Ministry of Environment, Egptian Environmental Affair Agency, 30 Misr Helwan El-Zyrae Road, Maadi, Cairo, Egypt AD - Department of Chemistry, Faculty of Science (Gils), Al-Azhar University (Girls), Yousef Abbas Y1 - 2022 PY - 2022 VL - 65 IS - 131 SP - 977 EP - 991 KW - Cow Animal Bone KW - Hen Egg Shell KW - Low-Cost Adsorption KW - Acid violet 19 KW - Adsorption isotherm KW - Kinetics DO - 10.21608/ejchem.2022.132441.5847 N2 - This study focused on studying the kinetics, thermodynamics, and the adsorption equilibrium of Acid fuchsin, C.I acid violet 19 (AV19) dye from aqueous media by using different adsorbent such as Caw Animal Bone (CAB) and Hen Eggshell (HES) as a new cheap, low-cost, widely available, eco-friendly, high-efficiency adsorbents. Scanning electron microscopy (SEM) and Fourier transform infrared spectrometer (FTIR) techniques were used to characterize the adsorbent before and after adsorption process. The influence of different conditions had been examined such as pH solution, initial dye concentrations, adsorbent dose, adsorbent sizes, contact time and different temperatures. The equilibrium data was analyzed by Langmuir and Freundlich's isotherm models and showed a good fit with the Langmuir model more than Freundlich's isotherm model (R2= 0.997), and a pseudo-second order kinetic is the best model suggested to explain the kinetics model with a good agreement with the intra-particle diffusion model. The parameters of thermodynamic including enthalpy ΔH°, entropy ΔS° and free energy ΔG° demonstrated that the adsorption process was feasible, spontaneous, and endothermic in nature of the adsorption of AV19 on CAB and exothermic nature of adsorption of AV19 on HES. The results clarified that a large percentage removal and the optimized conditions were (4±0.2 and 2±0.2) solution pH, 3.82mg/L initial dye concentration, adsorbent dose 0.75 gm/40 ml of particle size (2.36 and 0.355), for CAB and HES respectively and 60 min adsorption time 81.2% and 91.4% of dye was removed by CAB and HES respectively at experimental optimum conditions. The experimental results show that CAB and HES have a good potential as adsorbent to remove the colour from textile effluent and as an alternate low-cost adsorbent. UR - https://ejchem.journals.ekb.eg/article_235391.html L1 - https://ejchem.journals.ekb.eg/article_235391_80e09ed1613de7df2f1a4d06d24f4d09.pdf ER -