Performance Evaluation of Nanoscale Zero-Valent Iron Adsorbed on Calcium Alginate in Nitrate Reduction in Aqueous Systems
There is nowadays a growing concern about nitrate pollution in groundwater resources and its adverse impacts on the public health. The present experimental study was conducted to evaluate the efficiency of the Fe° calcium alginate process in nitrate reduction. For this purpose, the effect of Fe°...
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| Format: | Article |
| Language: | English |
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Water and Wastewater Consulting Engineers Research Development
2015-11-01
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| Series: | آب و فاضلاب |
| Subjects: | |
| Online Access: | http://www.wwjournal.ir/article_6521_b1ea55f8a768f1f1c5a6fd0996ecb451.pdf |
| _version_ | 1819178659024470016 |
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| author | Behrouz Karimi Mohammadsadegh Rajaee |
| author_facet | Behrouz Karimi Mohammadsadegh Rajaee |
| author_sort | Behrouz Karimi |
| collection | DOAJ |
| description | There is nowadays a growing concern about nitrate pollution in groundwater resources and its adverse impacts on the public health. The present experimental study was conducted to evaluate the efficiency of the Fe° calcium alginate process in nitrate reduction. For this purpose, the effect of Fe° adsorbed on calcium alginate on nitrate oxidation was investigated at a pH range of 2 to10, a contact time of 10 to 90 min, nitrate concentrations of 50 to 300 mg/L and with calcium alginat concentrations of 0.5, 1, and 2 mg/L. Nitrate level in the effluent was measured using spectrophotometry. Results showed that a pH level of 3 and a contact time of 15 min were the optimal values in the Fenton process for nitrate removal. Under these conditions, nitrate removal efficiencies for FeШ, FeІІ, Fe°, FeІІ/Fe°/H2O2, and FeШ/Fe°/H2O2 were 10.5, 27.6, 36.5, 62.3, and 74%, respectively, for a retention time of 90 min, an initial nitrate concentration of 100 mg/L, an iron concentration of 10 mg/L, and a pH level of 4. The results indicate that the corrective fenton process with zero iron nano-particles can effectively reduce nitrate under optimal conditions and that this method can be successfully used for the removal of similar compounds. |
| first_indexed | 2024-12-22T21:46:04Z |
| format | Article |
| id | doaj.art-951781a0de0e41258e9daab9738b0219 |
| institution | Directory Open Access Journal |
| issn | 1024-5936 2383-0905 |
| language | English |
| last_indexed | 2024-12-22T21:46:04Z |
| publishDate | 2015-11-01 |
| publisher | Water and Wastewater Consulting Engineers Research Development |
| record_format | Article |
| series | آب و فاضلاب |
| spelling | doaj.art-951781a0de0e41258e9daab9738b02192022-12-21T18:11:29ZengWater and Wastewater Consulting Engineers Research Developmentآب و فاضلاب1024-59362383-09052015-11-0125567756521Performance Evaluation of Nanoscale Zero-Valent Iron Adsorbed on Calcium Alginate in Nitrate Reduction in Aqueous SystemsBehrouz Karimi0Mohammadsadegh Rajaee1کارشناس ارشد مهندسی بهداشت محیط و عضو هیئت علمی دانشکده بهداشت، دانشگاه علوم پزشکی اراککارشناس ارشد مهندسی بهداشت محیط و عضو هیئت علمی دانشکده بهداشت، دانشگاه علوم پزشکی اراکThere is nowadays a growing concern about nitrate pollution in groundwater resources and its adverse impacts on the public health. The present experimental study was conducted to evaluate the efficiency of the Fe° calcium alginate process in nitrate reduction. For this purpose, the effect of Fe° adsorbed on calcium alginate on nitrate oxidation was investigated at a pH range of 2 to10, a contact time of 10 to 90 min, nitrate concentrations of 50 to 300 mg/L and with calcium alginat concentrations of 0.5, 1, and 2 mg/L. Nitrate level in the effluent was measured using spectrophotometry. Results showed that a pH level of 3 and a contact time of 15 min were the optimal values in the Fenton process for nitrate removal. Under these conditions, nitrate removal efficiencies for FeШ, FeІІ, Fe°, FeІІ/Fe°/H2O2, and FeШ/Fe°/H2O2 were 10.5, 27.6, 36.5, 62.3, and 74%, respectively, for a retention time of 90 min, an initial nitrate concentration of 100 mg/L, an iron concentration of 10 mg/L, and a pH level of 4. The results indicate that the corrective fenton process with zero iron nano-particles can effectively reduce nitrate under optimal conditions and that this method can be successfully used for the removal of similar compounds.http://www.wwjournal.ir/article_6521_b1ea55f8a768f1f1c5a6fd0996ecb451.pdfNitrateAqueous SystemCalcium AlginateNanoscale Zero-Valent Iron |
| spellingShingle | Behrouz Karimi Mohammadsadegh Rajaee Performance Evaluation of Nanoscale Zero-Valent Iron Adsorbed on Calcium Alginate in Nitrate Reduction in Aqueous Systems آب و فاضلاب Nitrate Aqueous System Calcium Alginate Nanoscale Zero-Valent Iron |
| title | Performance Evaluation of Nanoscale Zero-Valent Iron Adsorbed on Calcium Alginate in Nitrate Reduction in Aqueous Systems |
| title_full | Performance Evaluation of Nanoscale Zero-Valent Iron Adsorbed on Calcium Alginate in Nitrate Reduction in Aqueous Systems |
| title_fullStr | Performance Evaluation of Nanoscale Zero-Valent Iron Adsorbed on Calcium Alginate in Nitrate Reduction in Aqueous Systems |
| title_full_unstemmed | Performance Evaluation of Nanoscale Zero-Valent Iron Adsorbed on Calcium Alginate in Nitrate Reduction in Aqueous Systems |
| title_short | Performance Evaluation of Nanoscale Zero-Valent Iron Adsorbed on Calcium Alginate in Nitrate Reduction in Aqueous Systems |
| title_sort | performance evaluation of nanoscale zero valent iron adsorbed on calcium alginate in nitrate reduction in aqueous systems |
| topic | Nitrate Aqueous System Calcium Alginate Nanoscale Zero-Valent Iron |
| url | http://www.wwjournal.ir/article_6521_b1ea55f8a768f1f1c5a6fd0996ecb451.pdf |
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