Ammonia Removal from Saline Wastewater by Ion Exchange |
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Authors: | Miladinovic N Weatherley L R López-Ruiz J L |
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Institution: | 1. Department of Chemical and Process Engineering, University of Canterbury, P.O. Box 4800, Christchurch, New Zealand 2. Research Group on Zelite Aquaculture, Centro Andaluz Superior de Estudios, Spain 3. Marinos (CASEM), University of Cádiz, Cádiz, Spain
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Abstract: | Ion exchange materials that are highly selective for ammonia have been used for wastewater treatment but they are mainly suitable for use in non-saline water. In this paper, some new materials have been evaluated for the selective uptake of ammonia from saline wastewater. Those materials include: MN 500 (belongs to the group of material known as Macronets which are hypercrosslinked polyvinyl styrenes) as well as some chemically modified zeolites and products of zeolite nature. Equilibrium isotherms for ammonium ion uptake determined in a series of shake flask experiments using materials exposed to varying concentrations of ammonium ion in artificial seawater are shown. Capacity and selectivity data for these materials for ammonium ion are also presented. |
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