The effect of pH on equilibrium distribution of ammonia in air and river water
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2001
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/18496/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=1286 |
Daftar Isi:
- Ammonia is an important component in chemical industries. Very often, the water effluent of chemical plants contains ammonia, which may cause environmental problems. The equilibrium distribution of ammonia in air and water is hence of importance, especially in predicting the fate of this component in the environment, as well as in the design of equipment needed for the treatment of this effluent. In that system, two equilibria are involved, which are ionic and phase equilibria. In water phase, ammonia is present in two forms, free ammonia and ammonium ion. The two forms are in ionic equilibrium, in which the ionic equilibrium is affected by pH. Meanwhile, free ammonia in water is also in equilibrium with the ammonia in air (phase equilibrium). As a result, the equilibrium between ammonia in air and total ammonia in water is influenced by pH. Since effluent and natural water have a wide range of pH values, the effect of pH on that equilibrium needs to be studied Experimental and theoretical studies have been conducted and the results, which are represented in the form of mathematical model, can be applied to quantitatively predict the equilibrium distribution of ammonia at various value of pH, for the natural water studied