Acid Red 18 removal via extracted carbon from crude carrot meal modified with Nano magnetized particles in rotary reactor system

Since removal of dyes causing cancer from colored wastewater before releasing into environment is very important therefore in this study the effective parameters in removal of dye AR 18 with a new organic adsorbent were investigated by combining the two methods (adsorbent) and chemical method (AOPS).

Firstly, a rotary reactor was made up then for each experiment 100mL of sample was exposed to UV ray, H2O2 and extracted carbon from carrot meal. In this study low power UV lamps and in a reactor with capacity of 1.5L were used. Properties of adsorbent were studied and illustrated via TEM, SEM, XRD. Effects of parameters such as pH, UV radiation contact time, concentration of dye and concentration of adsorbent were examined and optimum points of each parameter obtained. Inlet and outlet of dye concentration was measured by spectrophotometer. adsorption Equilibrium and adsorption kinetics with maximum adsorption capacity were measured accordingly.

Physical properties of active magnetite carbon showed that Fe3O4 nanoparticles had average size of 22-90 nm with the BET of 480 m2/g. acid red dye 18 was removed with 99 % efficiency where adsorbent concentration: 1/5gr.L, dye concentration: 25 ppm, pH: 4 and contact time: 80 min. adsorption capacity: 126/98 mg/g and adsorption kinetics is in line with Pseudo-second-order model (R2=0/99, AR 18).

Results of this study showed that using extracted carbon from carrot meal together with UV radiation as a low cost adsorbent, Eco-friendly is significantly effective in dye removal via.