Removal of quaternary ammonium compounds in ion exchange process

Removal of Ammonium and Organic Compounds by Ion Exchange and Adsorption

Adsorption using activated carbon and ion-exchange is used to remove a range of organic compounds and ammonia respectively from treated wastewaters. Such treatment may follow secondary biological treatment to reduce BOD. Organic nitrogen (e.g. proteins) is degraded to ammonia and residual organic compounds may also be present following secondary treatment. Residual organic compounds may be thos...

Ammonium removal from digested sludge liquors using ion exchange.

Liquors arising from the dewatering of digested sludge typically contain ammonium levels in the range 200-700mgl(-1) NH(4)(+)-N. These liquors are frequently recycled to the head of the wastewater treatment works (WwTW) untreated and can constitute >25% of the total nitrogen load entering the works at inlet. This paper investigates the use of a clay-based material, MesoLite, as an ion exchange ...

The Electroreduction of Quaternary Ammonium Compounds

Interactions of Quaternary Ammonium Compounds and Proteins

A simple met.hod of titration with a cationic detergent has been developed which permits rapid estimation of the concentration of urinary protein with a minimum of manipulations and time. The method depends on the formation of an insoluble anion-cation complex between quaternary ammonium ions, hereinafter referred to as the cationic detergent, and proteins, in the present instance mainly human ...

Quaternary Ammonium Compounds as Water Channel Blockers

From the Department of Physiology, Nijmegen Center for Molecular Life Sciences, Radboud University Nijmegen Medical Center, 6500 HB Nijmegen, Nijmegen, The Netherlands, the Max-Planck Institute for Biophysical Chemistry, Theoretical and Computational Biophysics Department, Am Fassberg, D-37077, Göttingen, Germany, and the Department of Chemistry, University of Edinburgh, Kings Buildings, West M...