Comparative Study on Two Ways of the Saturated SiC Regeneration with Mn²⁺ Adsorption

Abstract:

Abstract. The saturated SiC with the adsorption of Mn2+ was regenerated dynamically by water backwashing and NaOH, and the Mn2+ removing effect was compared by the two ways .The results showed that on the condition of Mn2+ concentration at 1.7～2.2 mg/L ,flowing speed at 7.8 m/h, the regeneration rate of saturated SiC was only 49.8% after the first regenerated by backwashing .As for the second time ,the rate was less than 15%,which had lost Mn2+ removing ability .But by NaOH, the regeneration rate was more than 100% after the fifth regenerated ,which was obviously better than that of backwashing .And further study was conducted on Mn2+ removing mechanism by SiC through SEM figures.

• Periodical: Applied Mechanics and Materials (Volumes 209-211)
• Pages: 1956-1960
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.209-211.1956
• Online since: October 2012
• Authors: Ji Ku Zhang, Ming Jie Li, Yi Xing Yuan, Yang Jiang
• Keywords: Backwash, Dynamic Regeneration, NaOH, Saturated SiC with the Adsorption of Mn²⁺

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