STUDY ON ADSORPTION CAPACITY OF METHYLENE BLUE AND PHENOL RED ON LAO CAI APATITE ORE

Abstract

   This paper focus on the adsorption of Methylene blue and Phenol red in aqueoussolution on Lao Cai apatite ore. The isoelectric point of the material is 5.5. Theexperiments were conducted using the following parameters: time was 180 minutesfor Methylene blue and was 120 minutes for Phenol red; adsorbent mass is 0.1 g; pHwas 7.0 for both Methylene blue and Phenol red. Adsorption capacity for eachaqueous solution was found as 10.93 mg/g (Methylene blue) and 9.98 mg/g (Phenolred) at 250C, respectively. The results indicated that the flow speed of 1.0 mL/min isthe best for adsorbing Methylene blue and Phenol red. Moving adsorption capacityfor each aqueous solution was 3.20 mg/g for Methylene blue and 2.76 mg/g for Phenolred at flow speed of 1.0 mL/min.