Microwave-assisted synthesis of carbon nanotubes for the removal of toxic cationic dyes from textile wastewater

Toxic cationic dyes are used in different textile industries. When the colour interacts with sunlight, it causes incomplete photosynthesis, inhibiting aquatic organisms’ growth and disrupting gas permeability water system. In this work, carbon nanotubes (CNTs) were prepared to employ acetylene hydrogen as precursor gases a microwave-assisted reactor. The obtained CNTs tested for their ability remove crystal violet (CV) dye. However, effect of removal parameters, such pH ion solution, initial concentration, contact time, was optimized on adsorption process through response surface methodology. It found that CV dye 81% at an optimum value 7.0 10 mg/L concentration time 25 min. Complete extraction can be achieved by increasing CNT dosage.Moreover, using both Langmuir model Freundlich adsorption, equilibrium data from experiments analyzed. study also revealed room temperature, having high capability 2.615 mg/g CV, best defined model. For reaction order, rates represented pseudo-first-order kinetic