Evaluation of natural zeolite clinoptilolite efficiency for the removal of ammonium and nitrate from aquatic solutions
Background: Surface water and groundwater pollution with various forms of nitrogen such as ammonium and nitrate ions is one of the main environmental risks. The major objectives of this study were to evaluate the capacity of natural zeolite (clinoptilolite) to remove NO3– and NH4+ from polluted wate...
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| Format: | Article |
| Language: | English |
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Kerman University of Medical Sciences
2015-01-01
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| Series: | Environmental Health Engineering and Management |
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| Online Access: | http://ehemj.com/browse.php?a_id=60&sid=1&slc_lang=en |
| _version_ | 1819203316161183744 |
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| author | Mozhdeh Murkani Mohammad Nasrollahi Maryam Ravanbakhsh Parvaneh Bahrami Neamat Jaafarzadeh Haghighi Fard |
| author_facet | Mozhdeh Murkani Mohammad Nasrollahi Maryam Ravanbakhsh Parvaneh Bahrami Neamat Jaafarzadeh Haghighi Fard |
| author_sort | Mozhdeh Murkani |
| collection | DOAJ |
| description | Background: Surface water and groundwater pollution with various forms of nitrogen such as ammonium and nitrate ions is one of the main environmental risks. The major objectives of this study were to evaluate the capacity of natural zeolite (clinoptilolite) to remove NO3– and NH4+ from polluted water under both batch and column conditions.
Methods: The laboratory batch and column experiments were conducted to investigate the feasibility of clinoptilolite as the adsorbent for removal of nitrate (NO3–) and ammonium (NH4+) ions from aqueous solution. The effects of pH, clinoptilolite dosage, contact time, and initial metal ion concentration on NO3– and NH4+ removal were investigated in a batch system.
Results: Equilibrium time for NO3– and NH4+ ions exchange was 60 minutes and the optimum adsorbent dosage for their removal was 1 and 2.5 g/L, respectively. The adsorption isotherm of reaction (r> 0.9) and optimum entered concentration of ammonium and nitrate (30 and 6.5 mg/L, respectively) were in accordance with Freundlich isotherm model. The ammonium removal rate increased by 98% after increasing the contact time.
Conclusion: Our findings confirmed that natural Clinoptilolite can be used as one of effective, suitable, and low-costing adsorbent for removing ammonium from polluted waters. |
| first_indexed | 2024-12-23T04:17:58Z |
| format | Article |
| id | doaj.art-12fde7b9e4244436bc8219c9b96f3b17 |
| institution | Directory Open Access Journal |
| issn | 2423-3765 2423-4311 |
| language | English |
| last_indexed | 2024-12-23T04:17:58Z |
| publishDate | 2015-01-01 |
| publisher | Kerman University of Medical Sciences |
| record_format | Article |
| series | Environmental Health Engineering and Management |
| spelling | doaj.art-12fde7b9e4244436bc8219c9b96f3b172022-12-21T18:00:20ZengKerman University of Medical SciencesEnvironmental Health Engineering and Management2423-37652423-43112015-01-01211722Evaluation of natural zeolite clinoptilolite efficiency for the removal of ammonium and nitrate from aquatic solutionsMozhdeh Murkani0Mohammad Nasrollahi1Maryam Ravanbakhsh2Parvaneh Bahrami3Neamat Jaafarzadeh Haghighi Fard4BSc, Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IranBSc, Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IranMSc, Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IranMSc, Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IranProfessor, Environmental Technology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran and Department of Environmental Health Engineering, School of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IranBackground: Surface water and groundwater pollution with various forms of nitrogen such as ammonium and nitrate ions is one of the main environmental risks. The major objectives of this study were to evaluate the capacity of natural zeolite (clinoptilolite) to remove NO3– and NH4+ from polluted water under both batch and column conditions. Methods: The laboratory batch and column experiments were conducted to investigate the feasibility of clinoptilolite as the adsorbent for removal of nitrate (NO3–) and ammonium (NH4+) ions from aqueous solution. The effects of pH, clinoptilolite dosage, contact time, and initial metal ion concentration on NO3– and NH4+ removal were investigated in a batch system. Results: Equilibrium time for NO3– and NH4+ ions exchange was 60 minutes and the optimum adsorbent dosage for their removal was 1 and 2.5 g/L, respectively. The adsorption isotherm of reaction (r> 0.9) and optimum entered concentration of ammonium and nitrate (30 and 6.5 mg/L, respectively) were in accordance with Freundlich isotherm model. The ammonium removal rate increased by 98% after increasing the contact time. Conclusion: Our findings confirmed that natural Clinoptilolite can be used as one of effective, suitable, and low-costing adsorbent for removing ammonium from polluted waters.http://ehemj.com/browse.php?a_id=60&sid=1&slc_lang=enAmmoniumNitrateAdsorptionClinoptilolite |
| spellingShingle | Mozhdeh Murkani Mohammad Nasrollahi Maryam Ravanbakhsh Parvaneh Bahrami Neamat Jaafarzadeh Haghighi Fard Evaluation of natural zeolite clinoptilolite efficiency for the removal of ammonium and nitrate from aquatic solutions Environmental Health Engineering and Management Ammonium Nitrate Adsorption Clinoptilolite |
| title | Evaluation of natural zeolite clinoptilolite efficiency for the removal of ammonium and nitrate from aquatic solutions |
| title_full | Evaluation of natural zeolite clinoptilolite efficiency for the removal of ammonium and nitrate from aquatic solutions |
| title_fullStr | Evaluation of natural zeolite clinoptilolite efficiency for the removal of ammonium and nitrate from aquatic solutions |
| title_full_unstemmed | Evaluation of natural zeolite clinoptilolite efficiency for the removal of ammonium and nitrate from aquatic solutions |
| title_short | Evaluation of natural zeolite clinoptilolite efficiency for the removal of ammonium and nitrate from aquatic solutions |
| title_sort | evaluation of natural zeolite clinoptilolite efficiency for the removal of ammonium and nitrate from aquatic solutions |
| topic | Ammonium Nitrate Adsorption Clinoptilolite |
| url | http://ehemj.com/browse.php?a_id=60&sid=1&slc_lang=en |
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