Ultrasound-Assisted Adsorption of Basic Blue 41 onto Salda mud: Optimization and Error Analysis

Abstract

We investigated the ultrasound-assisted adsorption of Basic Blue 41 (BB41) dye from aqueoussolutions using a green and low-cost adsorbent such as Salda mud (SM) in our study. BET, FTIR, and SEMtechniques were used to determine the morphology and the functional groups of SM before and after dyeadsorption. Furthermore, we calculated different adsorption kinetics, isotherms, and error models (SSE,HYBRID, and ARE) parameters to evaluate the optimum experimental conditions such as the initial dyeconcentration of BB41 (6.25 - 50 mg L-1), SM dose (0.05 - 0.2 g), pH (3 - 10), and sonication time (400 -3600 s). The value of uptake (%) of SM for BB41 was 94% at 50 mg L-1,25 oC at 3600 s. Following this,we found that the pseudo second-order (Type2) model of BB41 was the best fitted model with highest R2(0.973 - 0.999) values. We developed a simple, low-cost, and fast to remove BM41 from water usingnatural and efficient SM adsorbent, which exhibited superior adsorption performance in wastewatertreatment under ultrasonic irradiation.