PHOTOCATALYTIC REDUCTION OF NITRATE IN AQUEOUS SOLUTIONS USING AG-DOPED TIO2/UV PROCESS

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PARASTAR SAEED; NASSERI SIMIN; MAHVI AMIR HOSSEIN; GHOLAMI MITRA; JAVADI AMIR HOSSEIN; HEMMATI SAEEDEH

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Journal: IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT Year:2012 | Volume:5 | Issue:3 (17) Page(s): 439-450

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Title

PHOTOCATALYTIC REDUCTION OF NITRATE IN AQUEOUS SOLUTIONS USING AG-DOPED TIO2/UV PROCESS

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Keywords

PHOTOCATALYTIC REDUCTIONQ2

AG-DOPED TIO2Q2

NITRATEQ2

AQUEOUS SOLUTIONSQ2

Abstract

Background and Objectives: Pollution of water resources to NITRATE is an environmental problem in many parts of the world. This problem possibly causes diseases such as methemoglobinemia, lymphatic system cancer and Leukemia. Hence, NITRATE control and removal from water resources is necessary. Considering that application of nanomaterials in treatment of environmental pollutants has become an interesting method, in this research use of Ag-doped TiO2 nanoparticles synthesized through photodeposition produced under UV irradiation was studied for removal of NITRATE from AQUEOUS SOLUTIONS.Materials and Methods: Three NITRATE concentrations of 20, 50, and 100 mg/L were considered. In order to determine the effect of Ag-doped TiO2 nanoparticles on NITRATE removal, dosages of 0.1, 0.4, 0.8 and 1.2 g/L nanoparticles were used; pH range of 5-9 was also considered. The effect of Ag-doped TiO2 nanoparticles both in darkness and under UV irradiation was studied. Moreover, the presence of chloride and sulfate anions on the system removal efficiency was investigated.Results: The optimum performance of NITRATE removal (95.5%) was obtained using NITRATE concentration of 100 mg/L, in acidic pH and 0.8 g/L Ag-TiO2. Increase of nanoparticle dosage up to 0.8 g/L, increased the removal efficiency, but for 1.2 g/L dosage of nanoparticles, the removal efficiency decreased. Maximum reduction performance without nanoparticles, under UV irradiation and under darkness conditions were 32% and 23.3%, respectively. In addition, we found that presence of sulfate and chloride anions in aqueous solution reduced efficiency of NITRATE removal.Conclusion: Results of this study showed that Ag-doped TiO2 nanoparticles may be efficiently used for NITRATE removal from AQUEOUS SOLUTIONS.

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APA: Copy

PARASTAR, SAEED, NASSERI, SIMIN, MAHVI, AMIR HOSSEIN, GHOLAMI, MITRA, JAVADI, AMIR HOSSEIN, & HEMMATI, SAEEDEH. (2012). PHOTOCATALYTIC REDUCTION OF NITRATE IN AQUEOUS SOLUTIONS USING AG-DOPED TIO₂/UV PROCESS. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, 5(3 (17)), 439-450. SID. https://sid.ir/paper/145718/en

Vancouver: Copy

PARASTAR SAEED, NASSERI SIMIN, MAHVI AMIR HOSSEIN, GHOLAMI MITRA, JAVADI AMIR HOSSEIN, HEMMATI SAEEDEH. PHOTOCATALYTIC REDUCTION OF NITRATE IN AQUEOUS SOLUTIONS USING AG-DOPED TIO₂/UV PROCESS. IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT[Internet]. 2012;5(3 (17)):439-450. Available from: https://sid.ir/paper/145718/en

IEEE: Copy

SAEED PARASTAR, SIMIN NASSERI, AMIR HOSSEIN MAHVI, MITRA GHOLAMI, AMIR HOSSEIN JAVADI, and SAEEDEH HEMMATI, “PHOTOCATALYTIC REDUCTION OF NITRATE IN AQUEOUS SOLUTIONS USING AG-DOPED TIO₂/UV PROCESS,” IRANIAN JOURNAL OF HEALTH AND ENVIRONMENT, vol. 5, no. 3 (17), pp. 439–450, 2012, [Online]. Available: https://sid.ir/paper/145718/en

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