원문정보
초록
영어
The present study is concerned with the removal of Manganese from aqueous solution by adsorption onto low cost adsorbent. Manganese oxide coated zeolite (MOCZ) and iron oxide coated zeolite (FOCZ) were investigated as an adsorbent for the removal of Mn2+. Batch adsorption experiments were performed as a function of pH, contact time and Mn concentration. The optimum conditions for maximum adsorption by MOCZ were attained at pH=7, Mn concentration of 5 mg/L and for FOCZ at pH=8, concentration of 4mg/L. Manganese detection was carried out by Inductive Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES). Furthermore, Results showed that MOCZ had a good adsorption performance for the adsorption of Mn rather than FOCZ, the adsorption capacity of MOCZ was 0.21 mg/g at 15 min. Langmuir, Freundlich, isotherm models were selected to evaluate the adsorption of Mn. It was found that the Langmuir isotherm model with coefficients of determinations (R2) of 0.97 and 0.94, respectively, best fits the Mn adsorption onto absorbents. Finally, Obtained results from experiments prove that MOCZ is suitable for removal of manganese from water and it is comparable with FOCZ.
목차
1. Introduction
2. Materials and Methods
2.1. Clinoptilolite and Reagents
2.2. Preparation of MnO2 – zeolite and FeO – Zeolite
2.3. Characterization of Adsorbent
2.4. Methods
2.5. Adsorption Experiments and Isotherm Studies
3. Results and Discussion
3.1. Characterization Studies
3.2. Effect of pH on the Adsorption of Mn2+
3.3. Effect of Initial Mn Concentration and Contact Time
3.4. Absorption Study
4. Conclusions
References