Ammonia Removal From Water By Ion Exchange

Complete removal of ammonia is required due to its extreme toxicity to most fish species.

Ammonia removal from water by ion exchange. Ion exchange process involves a reversible interchange of ions between liquid and solid phase. Biological conversion of ammonium into nitrate stripping of ammonia ion exchange electrodeionisation double pass ro step from these the ion exchange method was chosen because of the. Different methods to remove ammonium from water were considered by oasen. Ammonium removal by ion exchange is also used in the aquaculture industry where water is recirculated.

Ammonia removal from water by ion exchange using south african and zambian zeolite samples submitted in fulfilment of the requirements for the degree of master of science of rhodes university by monica mwale january 2000 supervisor. The classical technique is to use biological nitrification and denitrification to convert ammonia into nitrogen gas. This process has some problems. Ion exchange techniques are also effective for removal of ammonia as the ammonium ion from waste water and have the advantage of fast start up times compared to biological filtration which in.

Lin and wu 1996. Some of them are expensive. Note that the removal of nh 4 250 mg nh 4 l 1 in the test solution was studied with the initial ph varying from 4 to 9. The main principle of this method is that the rate of sedimentation of suspended solids in the feed water is lower than that of the ion exchange resin.

Moreover it is suitable for drinking water but not suitable for large scale like ponds. Abstract the aim of the work described in this thesis was to study the removal of ammonium ions from water by ion exchange. You can reduce ammonia by boiling the water for about 20 minutes. Fluidized ion exchange fix is another type of process utilizing ion exchange resin for nom removal cornelissen et al 2009.

Ro permeate by ion exchange with synthetic resins in gel form and na ionic form. The initial ph effect on equilibrium distribution of ammonium ions between the ion exchange and aqueous phases was studied to examine the behaviour of ammonium removal by cation exchange resins 10 g of c160h. Removal of ammonia from wastewater by ion exchange in the presence of organics. Biological methods nitrification do not respond well to shock loads of ammonia and unacceptable peaks in effluent ammonium concentration may result in such cases.

Aquaculture occasionally requires water to be cool 10 c which is an unsatisfactory temperature for many biological methods. Ion exchange has been applied in ammonia removal from aqueous solution due to the high removal efficiency and relatively simple operation bashir et al. It can remove free ammonia only but cannot remove the dissolved or ionized forms of ammonia. Removal by ion exchange offers a.

It can be removed by different ways like ion exchange distillation reverse osmosis or boiling. Thus when water is pumped into an up flow reactor configuration at certain speeds the ion exchange resin is. Dr horst kaiser. Acknowledgements i would like to acknowledge my supervisor dr horst kaiser for the guidance.