Porous microwave irradiated activated carbon has been developed and its application for time efficient ultrasonic treatment of Congo‐red (CR) dye. The maximum removal efficiency of 97.73% was obtained using developed adsorbent with ultrasound treatment. The optimum parameters for maximum dye removal were obtained that is, contact time of 2 hr, adsorbent dose of 0.2 g, neutral pH, room temperature, and initial CR‐effluent concentration of 10 mg/l. Adsorption isotherms models, kinetics of the process, and thermodynamic analysis have been evaluated to investigate the adsorption performance. The pseudo second order rate kinetics (R² = 0.99) and Langmuir equilibrium isotherm (R² = 0.99) were well fitted to the experimental data. It has been found that microwave synthesized method was better technique in terms of energy savings, and ultrasonic treatment approach was efficient technique in terms of operational time. The combination of microwave‐ultrasonic reported to have an adsorptive capacity of 75.75 mg/g with least energy‐cost consuming approach.

中文翻译：

---

微波辅助活性炭对纺织品染料废水的超声处理

已经开发出了多孔微波辐射活性炭，并将其用于刚果（CR）染料的高效时间超声处理。使用经过开发的超声波吸附剂，可达到97.73％的最大去除率。获得了最大程度去除染料的最佳参数，即接触时间2小时，吸附剂剂量0.2 g，中性pH，室温和CR废水初始浓度10 mg / l。吸附等温线模型，过程动力学和热力学分析已进行评估，以研究吸附性能。拟二级速率动力学（R ² = 0.99）和Langmuir平衡等温线（R ²= 0.99）与实验数据完全吻合。已经发现，微波合成法在节能方面是更好的技术，而超声波处理法在操作时间方面是有效的技术。据报道，微波-超声波联合使用具有75.75 mg / g的吸附能力，且能耗最低。