Ammonium assists orthophosphate removal from high-strength wastewaters by natural zeolite
نویسندگان
چکیده
منابع مشابه
Ammonium removal from wastewaters using natural New Zealand zeolites
Ammoniacal nitrogen (ammonia and ammonium) in agricultural wastewaters can promote eutrophication of receiving waters and be potentially toxic to fish and other aquatic life. Zeolites, which are hydrated aluminum-silicate minerals, have an affinity for ammonium ions (NH4"") and are, therefore, potentially useful in removing this contaminant from wastewaters. The major objectives of this study w...
متن کاملSimultaneous phosphate and ammonium removal from aqueous solution by a hydrated aluminum oxide modified natural zeolite
A natural zeolite (Z-N), rich in clinoptilolite, was modified (Z-Al) by incorporation of hydrated aluminum oxide (HAlO) for the simultaneous phosphate and ammonium removal. The incorporation of surface hydroxyl groups (≅Al-OH) into the zeolite structure, as active groups for phosphate removal, was characterized by acid-base titrations (pHPZC=4.5±0.2). The phosphate sorption increases from 0.6 m...
متن کاملAmmonium removal from aqueous solution by ion-exchange using packed bed natural zeolite
Ammonium removal from aqueous solution by a natural ion-exchange resin was investigated by considering the factors affecting the ammonium-exchange capacity including the zeolites’ particle size, the loading flow rates and the impact of a number of regenerations upon the ion-exchange capacity. The resin column was exhausted by downflow at 10, 25, 50 and 75 bed volume (BV)/h, until effluent ammon...
متن کاملEvaluation of natural zeolite clinoptilolite efficiency for the removal of ammonium and nitrate from aquatic solutions
Background: Surface water and groundwater pollution with various forms of nitrogen such as ammonium and nitrate ions is one of the main environmental risks. The major objectives of this study were to evaluate the capacity of natural zeolite (clinoptilolite) to remove NO3- and NH4+ from polluted water under both batch and column conditions. Methods: The laboratory batch and column experiments we...
متن کاملRemoval of High and Low Levels of Ammonium from Industrial Wastewaters
.................................................................................................................................................... iii ACKNOWLEDGEMENTS ................................................................................................................................. v TABLE OF CONTENTS ................................................................................
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ژورنال
عنوان ژورنال: Separation and Purification Technology
سال: 2014
ISSN: 1383-5866
DOI: 10.1016/j.seppur.2014.07.010