Nitrate removal from water using alum and ferric chloride: A comparative study of alum and ferric chloride efficiency
Journal Title: UNKNOWN - Year 2016, Vol 3, Issue 2
Abstract
Background: Nitrate is an acute and well-known hazardous contaminant, and its contamination of water sources has been a growing concern worldwide in recent years. This study evaluated the feasibility of nitrate removal from water using the traditional coagulants alum and ferric chloride with lower concentrations than those used in the conventional coagulation process. Methods: In this research, two coagulants, alum and ferric chloride, were compared for their efficiency in removing nitrate in a conventional water treatment system. The removal process was done in a batch system (jar test) to examine the effects of coagulant dosages and determine the conditions required to achieve optimum results. Results: The results revealed that ferric chloride at an initial dose rate of 4 mg/L reduced nitrate concentration from 70 mg/L to less than the World Health Organization (WHO) guideline value (50 mg/L N-NO3). However, the removal efficiency of alum was not salient to significant nitrate reduction. Conclusion: In conclusion, ferric chloride was more effective than alumin removing NO- 3, even in common dosage range, and can be considered a cost-effective and worthy treatment option to remediate nitratepolluted water. Furthermore, the removal of nitrate by coagulation can be simple and more economical than other treatment alternatives.
Authors and Affiliations
amir mohammadi
Keywords
Related Articles
- EP ID EP285599
- DOI 10.15171/EHEM.2016.03
- Views 110
- Downloads 0
Geohelminthic: human ascariasis and trichuriasis in Mazandaran province, northern Iran
Background: Ascariasis and trichuriasis are the most common intestinal geohelminthic diseases, and as such they are significant in terms of clinical and public health. This study was done to determine prevalence, status...
Effect of UV light on pentachlorophenol removal in the electro- Fenton process
Background: This research studied the effect of UV light on pentachlorophenol (PCP) removal in the electro-Fenton (EF) process. Methods: PCP was used as the pollutant in this study. The effects of Fenton’s reagent, i.e....
Evaluation the concentration of mercury, zinc, arsenic, lead and cobalt in the Ilam city water supply network and resources
Background: The presence of heavy metals in water resources above threshold levels can be toxic and carcinogenic for consumers. This study determined the concentrations of heavy metals in the drinking water distribution...
Baffle and fixed media effects on coliform removal and bacterial die-off rate coefficient in waste stabilization ponds (a case study in Ahvaz)
Background: The use of waste stabilization ponds is one of the cheapest wastewater treatment processes. This study evaluated the effects of baffles and fixed media on coliform removal in facultative lagoons. Methods: In...
Feasibility of electrochemical oxidation process for treatment of saline wastewater
Background: High concentration of salt makes biological treatment impossible due to bacterial plasmolysis. The present research studies the process of electrochemical oxidation efficiency and optimal levels as important...