Removal of nitrates and organic compounds from aqueous solutions by zero valent (ZVI) iron reduction coupled with coagulation/ precipitation proces
The removal of nitrates from aqueous solutions is cumbersome because of their high solubility in water. The use of zero-valent iron (ZVI) for the reduction of nitrates is the chemical process and it is an alternative method to the biological ones. The aim of the present study was to evaluate the eff...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2020-09-01
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| Series: | Archives of Environmental Protection |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/117970/Archives%20vol%2046%20no%203_22_29.pdf |
| _version_ | 1797394381827735552 |
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| author | Ewa Wiśniowska Maria Włodarczyk-Makuła |
| author_facet | Ewa Wiśniowska Maria Włodarczyk-Makuła |
| author_sort | Ewa Wiśniowska |
| collection | DOAJ |
| description | The removal of nitrates from aqueous solutions is cumbersome because of their high solubility in water. The use of zero-valent iron (ZVI) for the reduction of nitrates is the chemical process and it is an alternative method to the biological ones. The aim of the present study was to evaluate the eff ectiveness of nitrates removal from water solution by using the ZVI process. The process was coupled with the removal of COD, phosphates and turbidity by using by-products of nitrates reduction. Batch tests were performed to evaluate the eff ectiveness of ZVI in the removal of nitrates from aqueous solutions. The eff ectiveness of nitrates removal was analyzed after 5, 10, 20, 30 and 60 min. and compared to the initial concentration of pollutants. Simultaneously analysis of ammonium nitrogen and nitrites was controlled to identify products of nitrates reduction under various pH. The removal of COD, phosphates and turbidity was also performed in batch tests. The eff ectiveness of the emoval by using three types of chemicals was compared – PIX, FeSO4, and waste Fe2+/Fe3+ from the ZVI process. The results obtained in the study indicate that ZVI can be eff ectively used in the treatment of water polluted with nitrates and the by-products of the process could be further applied in the removal of COD, phosphates and turbidity. Based on the results the method should be advised as a promising alternative to the technologies used nowadays under technical scale as a technology that fits with a circular economy. |
| first_indexed | 2024-03-09T00:18:56Z |
| format | Article |
| id | doaj.art-f9ab25b59ec8409ca414a1e62fcef616 |
| institution | Directory Open Access Journal |
| issn | 2083-4772 2083-4810 |
| language | English |
| last_indexed | 2024-03-09T00:18:56Z |
| publishDate | 2020-09-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Environmental Protection |
| spelling | doaj.art-f9ab25b59ec8409ca414a1e62fcef6162023-12-12T06:43:38ZengPolish Academy of SciencesArchives of Environmental Protection2083-47722083-48102020-09-01vol. 46No 32229https://doi.org/10.24425/aep.2020.134532Removal of nitrates and organic compounds from aqueous solutions by zero valent (ZVI) iron reduction coupled with coagulation/ precipitation procesEwa Wiśniowska0Maria Włodarczyk-Makuła1Częstochowa University of Technology, PolandCzęstochowa University of Technology, PolandThe removal of nitrates from aqueous solutions is cumbersome because of their high solubility in water. The use of zero-valent iron (ZVI) for the reduction of nitrates is the chemical process and it is an alternative method to the biological ones. The aim of the present study was to evaluate the eff ectiveness of nitrates removal from water solution by using the ZVI process. The process was coupled with the removal of COD, phosphates and turbidity by using by-products of nitrates reduction. Batch tests were performed to evaluate the eff ectiveness of ZVI in the removal of nitrates from aqueous solutions. The eff ectiveness of nitrates removal was analyzed after 5, 10, 20, 30 and 60 min. and compared to the initial concentration of pollutants. Simultaneously analysis of ammonium nitrogen and nitrites was controlled to identify products of nitrates reduction under various pH. The removal of COD, phosphates and turbidity was also performed in batch tests. The eff ectiveness of the emoval by using three types of chemicals was compared – PIX, FeSO4, and waste Fe2+/Fe3+ from the ZVI process. The results obtained in the study indicate that ZVI can be eff ectively used in the treatment of water polluted with nitrates and the by-products of the process could be further applied in the removal of COD, phosphates and turbidity. Based on the results the method should be advised as a promising alternative to the technologies used nowadays under technical scale as a technology that fits with a circular economy.https://journals.pan.pl/Content/117970/Archives%20vol%2046%20no%203_22_29.pdfcoagulationnitratesreduction processzero valent iron (zvi) |
| spellingShingle | Ewa Wiśniowska Maria Włodarczyk-Makuła Removal of nitrates and organic compounds from aqueous solutions by zero valent (ZVI) iron reduction coupled with coagulation/ precipitation proces Archives of Environmental Protection coagulation nitrates reduction process zero valent iron (zvi) |
| title | Removal of nitrates and organic compounds from aqueous solutions by zero valent (ZVI) iron reduction coupled with coagulation/ precipitation proces |
| title_full | Removal of nitrates and organic compounds from aqueous solutions by zero valent (ZVI) iron reduction coupled with coagulation/ precipitation proces |
| title_fullStr | Removal of nitrates and organic compounds from aqueous solutions by zero valent (ZVI) iron reduction coupled with coagulation/ precipitation proces |
| title_full_unstemmed | Removal of nitrates and organic compounds from aqueous solutions by zero valent (ZVI) iron reduction coupled with coagulation/ precipitation proces |
| title_short | Removal of nitrates and organic compounds from aqueous solutions by zero valent (ZVI) iron reduction coupled with coagulation/ precipitation proces |
| title_sort | removal of nitrates and organic compounds from aqueous solutions by zero valent zvi iron reduction coupled with coagulation precipitation proces |
| topic | coagulation nitrates reduction process zero valent iron (zvi) |
| url | https://journals.pan.pl/Content/117970/Archives%20vol%2046%20no%203_22_29.pdf |
| work_keys_str_mv | AT ewawisniowska removalofnitratesandorganiccompoundsfromaqueoussolutionsbyzerovalentzviironreductioncoupledwithcoagulationprecipitationproces AT mariawłodarczykmakuła removalofnitratesandorganiccompoundsfromaqueoussolutionsbyzerovalentzviironreductioncoupledwithcoagulationprecipitationproces |