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Ultrasonic treatment of textile dye effluent utilizing microwave‐assisted activated carbon
Author(s) -
Maheshwari Karishma,
Solanki Yogendra S.,
Ridoy Md Sabbir Hossain,
Agarwal Madhu,
Dohare Rajeev,
Gupta Ragini
Publication year - 2020
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.13410
Subject(s) - adsorption , activated carbon , ultrasonic sensor , microwave , materials science , langmuir adsorption model , kinetics , effluent , chemical engineering , carbon fibers , nuclear chemistry , chemistry , composite material , environmental engineering , organic chemistry , composite number , acoustics , environmental science , computer science , telecommunications , physics , quantum mechanics , engineering
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 ( R 2 = 0.99) and Langmuir equilibrium isotherm ( R 2 = 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.