An economic comparison of reverse osmosis and ion exchange in Europe. In: Greig JA (ed.) Ion Exchange Development and Applications, pp. 58}66. Cambridge: Royal Society of Chemistry. Nolan J and Irving J (1984) The effect on the capacity of strong base anion exchange resins of the ratio of chloride to sulphate in the feed water. In: Naden D and Streat M (eds) Ion Exchange Technology, pp. 160}168...

Abstract Deep tropical soils with net anion exchange capacity can adsorb nitrate and might delay the eutrophication of surface waters that is often associated many temperate croplands. We investigated soil pools in deep Southern Brazilian Amazon, where conversion forest Cerrado to intensive fertilized soybean soybean-maize cropping expanded rapidly 2000s. found mean top 8 m increased from 143 k...

This research investigated stability of two novel aminated polyphenylene polymers as anion exchange layers in bipolar membranes. Bipolar membrane stability was tested under operating conditions of 50 mA/cm2, and under conditions of soaking in room temperature 1 M NaOH. The stability of the custom made bipolar membranes was compared with those for two commercial membranes. For the polyphenylene-...

[18F]Fluoride was trapped from [18O]water in high yield by ion exchange on a microporous carbon prepared by controlled oxidation to produce a cationic surface with an exchange capacity of about 350 microequiv/g. The [18F]fluoride could be recovered by displacement with aqueous K2CO3. The cationic carbon offered a dimensionally rigid matrix of high thermal stability. It was characterized with re...

lead, copper, cobalt, nickel, iron and zinc ions form monocitrate complexes (negative charge) in citrate solution which is absorbed on the citrate form of anion-exchange resins (citrate as counter ion) y exchange of citrate ion with citrate complexes. these are subsequently recovered from the resin by 0.5m ammonium citrate eluent at ph 2.0. under optimized conditions, quantitative recovery was ...

Potassium ion and Na(+) influx and efflux rates into and from excised barley roots are compared with the maximum capacity of accumulation. Potassium ion and Na(+) influx and efflux involve a cation exchange that is independent of simultaneous exchange of the accompanying anion. These exchange fluxes depend on the concentration and cation composition of the solutions from which they originate. S...

Chemical cross-linking anion exchange series membranes were prepared from linear engineering plastics poly(2,6-dimethyl1,4-phenylene oxide) (PPO) by conducting the processes of bromination and amination at both benzyl and aryl positions. Compared with the traditional technologies, the membrane route described in this paper has cancelled the chloromethylation process and thus, given up the use o...