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Arch Hyg Sci 2017, 6(4): 377-384 Back to browse issues page
Nitrate Removal from Aqueous Solutions Using Almond Charcoal Activated with Zinc Chloride
Mohsen Arbabi1, Akbar Rostami *1, Mohammad hassan Mahmoudian2, Morteza Sedehi3, Abbas Khodabakhshi4
1- Department of Environmental Health Engineering, School of Health, Shahrekord University of Medical Sciences, Shahrekord, Iran.
2- Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran.
3- Department of Epidemiology and Statistical, School of Health, Shahrekord University of Medical Sciences, Shahrekord, Iran.
4- Shahrekord University of Medic al Sciences
Abstract:   (3809 Views)
Background & Aims of the Study: Nitrate is one of the most important contaminants in aquatic environments that can leached to water resources from various sources such as sewage, fertilizers and decomposition of organic waste. Reduction of nitrate to nitrite in infant’s blood stream can cause “blue baby” disease in infants. The aim of this study was to evaluate the nitrate removal from aqueous solutions using modified almond charcoal with zinc chloride.
Materials &Methods: This study is an experimental survey. At the first charcoal almond skins were prepared in 5500C and then modified with ZnCl2. Morphologies and characterization of almond shell charcoal were evaluated by using FTIR, EDX, BET and FESEM. Adsorption experiments were conducted with 500 ml sample in Becker. The nitrate concentration removal, contact time, pH and charcoal dosage were investigated. The central composite design method was used to optimizing the nitrate removal process. The results analyzed with ANOVA test.
Results: The best condition founded in 48 min, 1250 ppm, 125 mg/l and 3 for retention time, primary nitrate concentration, charcoal dosage and pH respectively. The results showed that the nitrate removal decreases with increasing pH. Modification of skin charcoal is show increasing of nitrate removal from aquatic solution.

Conclusion: In this study, the maximum nitrate removal efficiency for raw charcoal and modified charcoal was determined 15.47% and 62.78%, respectively. The results showed that this method can be used as an effective method for removing nitrate from aqueous solutions.

Keywords: Nitrate, Almond Charcoal, Zinc Chloride, Absorption, Isotherm, Activated Carbon, Iran
Full-Text [PDF 781 kb]   (1002 Downloads) |   |   Full-Text (HTML)  (606 Views)  
Type of Study: Original Article | Subject: Environmental Health
Received: 2017/02/20 | Accepted: 2017/09/21 | Published: 2017/09/30
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Arbabi M, Rostami A, Mahmoudian M H, Sedehi M, Khodabakhshi A. Nitrate Removal from Aqueous Solutions Using Almond Charcoal Activated with Zinc Chloride. Arch Hyg Sci 2017; 6 (4) :377-384
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