Removal of Mn2+ from aqueous solution using Clinoptilolite coated with manganese dioxide
Irtiqa Imini Pishgiri Masdumiyat (Safety Promotion and Injury Prevention),
Vol. 2 No. 4 (2014),
28 Tir 2015
,
Page 265-272
https://doi.org/10.22037/meipm.v2i4.8391
Abstract
Background and Objective: Toxicity and non-biodegradable nature of Mn2+,which in various ways, such as discharge of sewage industries (metallurgy, metalworking) and high content of manganese in groundwater due to geological conditions, the need to remove the metal from water resources is inevitable. The aim of this study was to evaluate the effectiveness of modified Clinoptilolite with KMnO4 for removal of Mn2+ from aqueous solutions.
Materials and Methods: In this study, Clinoptilolite (Semnan) were used to remove for examination. Before using zeolites, were milled and sieved in sizes ranging (3-5, 5-7, 7-10 mm). Adsorbent with standard KMnO4 oxidation to MnO2 coating on modified Clinoptilolite were prepared and used for experiments. The effects of time, pH, initial ion concentration and concentration and size of the adsorbent on the removal Mn (II) ions were examined. XRD analysis was taken to determine the structural properties.
Results: The results showed that the ability modified Clinoptilolite, enriching with KMnO4 for manganese absorption is high. The maximum uptake capacity of modified Clinoptilolite equal 0.23 mg/g with removal efficiency 95% at the initial concentration of 5 mg/L and 1 gr the adsorbent with size of (1-3) mm, respectively. Also, the manganese removal efficiency with increasing initial concentration of 1 to 5 mg increases. The optimum of pH and equilibrium time in these experiments is 7 and 15 minutes.
Conclusion: According to the results modified Clinoptilolite are suitable for removal of Mn (II) ion from water. In addition modified Clinoptilolite use non-toxic nature, low cost and availability has economically justified.
How to cite this article: Massoudinejad MR, Eslami A, Khashij M. Removal of Mn2+ from aqueous solution using Clinoptilolite coated with manganese dioxide. Irtiqa Imini Pishgiri Masdumiyat (Safety Promotion and Injury Prevention).2015; 2(4):265-272.
- Clinoptilolite, Modified Zeolite, Mn2 , Adsorption
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