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Removal of nitrate from aqueous solution by using red mud
Scopus
Toplam 230 atıf DOI
The objective of this study is to remove the nitrate from aqueous solution by using the original and activated red mud in batch adsorption technique. The effects of pH, adsorbent dosage and contact time on the adsorption were investigated. The nitrate adsorption capacity of activated red mud was found to be higher than that of the original form and decreased above pH 7. Adsorption process was expressed by using Langmuir and Freundlich isotherms. Langmuir isotherm curves was found to be significant compared to Freundlich isotherm. Adsorption capacity of the original and activated red mud was found to be 1.859 and 5.858 mmol nitrate/g red mud, respectively. It was found that sufficient time for adsorption equilibrium of nitrate ions is 60 min. The mechanism for nitrate removal was explained by considering of chemical nature of red mud and interaction between metal oxides surface and nitrate ions. © 2006 Elsevier B.V. All rights reserved.
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Removal of nitrate from the aqueous phase by Donnan dialysis
Scopus
Havuzumuzda 32 atıf almış
The removal of nitrate ions through SB-6407 and Neosepta AMX anion exchange membranes has been studied under Donnan dialysis conditions as a function of receiver phase concentration and co-existence anions in the feed phase. For both membranes, it was observed that the transport of nitrate increased with increase of the receiver phase concentration and decreased in the presence of co-existence anions in feed phase. It was also observed that the nitrate transport efficiency of the SB-6407 was higher than that of the Neosepta AMX membrane. The transport of nitrate ions was correlated with the flux data and explained according to the membrane structure. © 2008 Elsevier B.V. All rights reserved.
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Kurumlar (1)
Selçuk Üniversitesi
Selçuklu, Turkey