Adsorption of indigo carmine and methylene blue dye: Taguchi’s design of experiment to optimize removal efficiency

Abstract

In the present study, Taguchi's experimental methodology has been applied to find optimum level (value) of adsorption parameters (factors) for the removal of indigo carmine dye (ICD) and methylene blue dye (MBD) using activated carbon derived from Acacia Nilotica sawdust (ACSA). The effect of significant adsorption parameters, viz. adsorbent dose (m), initial concentration (C 0), temperature (T) and contact time (t), on the adsorption capacity (q t) of ACSA for each dye has been discussed. Average values and S/N ratio for each parameter at three different levels have been estimated using L 9 orthogonal array (OA). Analysis of variance (ANOVA) has been used to identify the significant parameters and the most favourable optimal conditions for both raw data and S/N data. The study revealed that, for ICD, initial dye concentration is found to be the most significant parameter with 55.8% contribution followed by ACSA dose, temperature and contact time with 35.7%, 5% and 3.4% contribution, respectively. For MBD, the ACSA dose (m) is found to be the most significant parameter with 46.4% contribution followed by initial dye concentration, temperature and contact time with 44%, 5.3% and 4.4% contribution, respectively. The contact time (t) is found to be the least significant parameter in the overall sorption process for both ICD and MBD. The optimized levels of parameters for both dyes are found to be A 1 , B 3 , C 3 and D 3. The predicted and average confirmatory values of total dye adsorbed (q t) on ACSA at optimized levels were found to be 31.02 and 31.01 mg/g, respectively, for ICD and 57.35 and 57.36 mg/g, respectively, for MBD. The percentage removal of ICD and MBD at optimized levels was found to be 77.5% and 95.4%, respectively.

Malahit yeşili boyar maddesinin çam kozalağı ile adsorpsiyonunun Taguchi metodu ile incelenmesi

“…Bu sayede optimum seviyeler bulunur. Parametrelerin etkisini görmek için parametrelerin varyanslarından faydalanılarak ANOVA analizi yapılır [13].…”

Modeling and Optimization of Pollutants Removal during Simultaneous Adsorption onto Activated Carbon with Advanced Oxidation in Aqueous Environment

“…Response surface method (RSM) can be mentioned as an example [ 48 ]. The DoE methods reduce the number of necessary measurements, which shortens the required time, decreases the material consumption and the costs of experiments [ 49 , 50 , 51 ]. Due to the limited application of the models designated by means of RSM, the models devised with the data mining methods, for instance artificial neural networks (ANN), are highly useful [ 52 , 53 , 54 ].…”

Adsorptive Removal of Direct-Red-28 Dye from Contaminated Water Using Subabool Timber Wood Waste

“…Today, litter in the form of water and its scarcity is the major concern. Due to uneconomical and ineffective water treatment, a lot of manufacturing and production industries discharge their contaminated water to nearby land or water sources without any processing or treatment [1]. Physico-chem adsorption is one among the majority of treatment systems.…”