期刊
CHEMOSPHERE
卷 224, 期 -, 页码 494-501出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2019.01.085
关键词
Competitive adsorption; Donnan membrane; Nanoparticles; Adsorption kinetics; Regeneration
资金
- Engineering and Physical Sciences Research Council (EPSRC) through STREAM Industrial Doctorate Centre
- Anglian Water
- Severn Trent Water
- Scottish Water
- Thames Water
- Yorkshire Water
- Wessex Water
Conventional sorption media are inefficient for phosphorus removal from wastewater due to preference for competing species such as sulphate, nitrate and organics. This work investigates whether the use of hybrid ion exchange resins effectively negates such concerns. Trials were conducted with a hybrid anion exchange (HAIX) media which was preloaded with different background constituents and operated over multiple regeneration cycles to ascertain the likely impacts. The work revealed that whilst the impact of the other constituents was seen in regards to direct competition, the major impact was on reduction of the rate of intraparticle mass transfer through sorption of the constituents onto the base resin thereby reducing the Donnan membrane effect. Comparison of the impact of the background water constituents on the individual components (hybrid resin, base resin, nanoparticles) revealed the importance of the nanoparticle whereby they effectively transform the ion exchange media into a mono component absorber for phosphorus that enables sustained removal even in complex wastewaters. (C) 2019 Elsevier Ltd. All rights reserved.
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