Removal of reactive black 5 [RB5] dye from aquatic solution by using of adsorption onto synthesized sodium alginate magnetic beads

Industrial wastewater included the dyes one of the important sources of environmental pollution, that founded in loom wastewater which are harmful for human health and environment. Therefore, the purpose of this research was investigated removal of RB5 dye from aquatic solution by using of adsorption onto synthesized magnetic sodium alginate beads. At first, synthesized magnetic sodium alginate beads. Then, acquired beads optimum dosage equal to 18 g/l00CC, with constant other parameters. The effect of pH contact time and initial RB5 dye concentration was studied at the constant of beads [18 g/l00CC]. Results showed that removal efficiency was decreased by increasing of initial RB5 dye concentration. Also the results showed the removal efficiency was increased by increasing of adsorbent dose and contact time. The results showed data were explained acceptably by Langmuir isotherms and pseudo-second-order kinetics models respectively. The results showed that removal of RB5 dye from aqueous solution by using of magnetic sodium alginate beads can be done cheaper and effective

[Removal of acid blue 113 [AB113] dye from aqueous solution by adsorption onto activated red mud: a kinetic and equilibrium study]

Dyes are among the most important sources of environmental pollutants which are found in wastewater of different industries such as textile manufacturing industries and are harmful for human health and environment. The purpose of this study was to assess removal of AB 113 dye from aqueous solution by its adsorption onto activated red mud as a cheap absorbent. This study was a laboratory study. At first red mud was activated by adding 20 ml nitric acid for each 10 gr of red mud for 24 hours, and dried out in 150 [degree sign] C for 4 hours. Acquired equilibrium time was determined which was 60 min. The effect of pH, contact time and initial AB113 dye concentration, kinetic and isotherm models were studied at constant equilibrium time. Data were interpreted and analyzed by Excel software and regression coefficient. Increased pH and increased initial dye concentration led to decreased rate of dye removal. But dye removal increased by increasing contact time. The results showed that AB113 adsorption follows Longmuir isotherm [R[2] = 0.9943, q[e] = 0.172 mg/g] and pseudo second order models [R[2] = 0.9999, q[e] = 3.86 mg/g] to a greater degree. Considering the constant distribution coefficient, with increasing initial amount of red mud adsorbent surface became homogeneous. The results of this study showed that red mud can be used as a fast, effective and cheap adsorbent with high efficiency for the treatment of textile manufacturing wastewater