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Author Rao, Shweta G
Title Manganese oxide coated adsorbents for dissolved zinc removal from stormwater runoff
book jacket
Descript 33 p
Note Source: Masters Abstracts International, Volume: 48-01, page: 0506
Adviser: Thomas Young
Thesis (M.S.)--University of California, Davis, 2009
Removal of dissolved trace metals from highway runoff is one of the most important challenges in highway runoff pollution control. In the present study the target metal of interest was zinc (Zn). Adsorption of Zn onto manganese (Mn) oxide coated media was investigated. Two media - sand and cement, were coated with MnO2. The structures of manganese oxide coated sand (MOCS) and Manganese oxide coated cement (MOCM) were studied in detail. The SEM images reveal a significantly porous MOCM with spherical manganese oxide deposits. The MOCS on the other hand showed a comparatively less surface roughness
Batch adsorption studies were conducted at three pH values of 5, 7 and 9. A high value of distribution coefficient (Kd) for the MOCM indicated that MOCM might be a promising adsorbent for removal of Zn when compared with MOS. The Freundlich isotherm model fitted the batch adsorption data very well. The removal was the highest at pH 9 for MOS but MOCM showed the same removal capacity at pH 7 and 9
Comparison with coated media (Mn oxide coated polymeric media) studied previously was done which showed MOCM to have a higher affinity Zn and hence better removal capacity
School code: 0029
Host Item Masters Abstracts International 48-01
Subject Engineering, Civil
Engineering, Sanitary and Municipal
Engineering, Environmental
Alt Author University of California, Davis
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