Abstract
The production of high quality drinking water requires disinfection process to control the pathogenic
microorganisms and algae. The algae and natural organic matter represented by humic acid (HA) are considered
important precursors for the formation of disinfection by-products (DBPs). In the present work, the contribution of
algae and HA in trihalomethanes (THMs) formation was demonstrated. The effects of Chl (a) concentration, HA
concentration, Cl2 dose and pH of water on formation potential of THMs were investigated. The results showed that
the yield of all DBPs were higher upon the chlorination of Scenedesmus obliquus and HA than in case of
Scenedesmus obliquus.Also the concentrations of TTHMs were increased as the reaction time was extended.
However the kinetics of TTHMs formation was very rapid, where most of TTHMs were formed after 15 min of
reaction time. It was concluded that the THMs formation highly dependent on the algal content rather than HA
indicating that the control of algae in water is highly recommended in order to avoid the formation of high levels of
harmful THMs.
microorganisms and algae. The algae and natural organic matter represented by humic acid (HA) are considered
important precursors for the formation of disinfection by-products (DBPs). In the present work, the contribution of
algae and HA in trihalomethanes (THMs) formation was demonstrated. The effects of Chl (a) concentration, HA
concentration, Cl2 dose and pH of water on formation potential of THMs were investigated. The results showed that
the yield of all DBPs were higher upon the chlorination of Scenedesmus obliquus and HA than in case of
Scenedesmus obliquus.Also the concentrations of TTHMs were increased as the reaction time was extended.
However the kinetics of TTHMs formation was very rapid, where most of TTHMs were formed after 15 min of
reaction time. It was concluded that the THMs formation highly dependent on the algal content rather than HA
indicating that the control of algae in water is highly recommended in order to avoid the formation of high levels of
harmful THMs.
| Original language | English |
|---|---|
| Article number | 5 |
| Pages (from-to) | 298-303 |
| Number of pages | 6 |
| Journal | Journal of Applied Environment and Biological Sciences |
| Volume | 5 |
| Issue number | 8 |
| Publication status | Published - 17 Jun 2015 |
