NOM (HA and FA) Reduction in Water Using Nano Titanium Dioxide Photocatalysts (P25 and P90) and Membranes
This study examined the removal of natural organic substances (humic acids-HA, and fulvic acids-FA) from model solutions using photocatalysis and ultrafiltration. The effect of two nano titanium dioxide types (P25 and P90) with different active surface areas and two UV lamps (low-pressure and medium...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-02-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/10/2/249 |
| _version_ | 1811297015394467840 |
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| author | Mariola Rajca |
| author_facet | Mariola Rajca |
| author_sort | Mariola Rajca |
| collection | DOAJ |
| description | This study examined the removal of natural organic substances (humic acids-HA, and fulvic acids-FA) from model solutions using photocatalysis and ultrafiltration. The effect of two nano titanium dioxide types (P25 and P90) with different active surface areas and two UV lamps (low-pressure and medium-pressure) on the effectiveness of FA and HA removal during photocatalysis was tested. An integrated photocatalytic + ultrafiltration system was also analyzed to determine the effectiveness of FA and HA removal and the changes in the relative permeate flux (Ultrafiltration Membrane Fouling-UF). We observed that photocatalysis using the P90 nano titanium dioxide was more efficient than the P25 due to the larger surface area (2×). The decomposition of organic substances proceeded efficiently up to 30 min of solution exposure, and the use of a medium-pressure lamp accelerated compound decomposition relative to the low-pressure lamp. The applied photocatalysis + ultrafiltration system was characterized by a high degree of FA removal while improved hydraulic efficiency was observed during ultrafiltration. |
| first_indexed | 2024-04-13T05:57:58Z |
| format | Article |
| id | doaj.art-8b392a00e39b45c9a1af12fc1af3720b |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-04-13T05:57:58Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-8b392a00e39b45c9a1af12fc1af3720b2022-12-22T02:59:34ZengMDPI AGCatalysts2073-43442020-02-0110224910.3390/catal10020249catal10020249NOM (HA and FA) Reduction in Water Using Nano Titanium Dioxide Photocatalysts (P25 and P90) and MembranesMariola Rajca0Silesian University of Technology, Faculty of Energy and Environmental Engineering, 44-100 Gliwice, PolandThis study examined the removal of natural organic substances (humic acids-HA, and fulvic acids-FA) from model solutions using photocatalysis and ultrafiltration. The effect of two nano titanium dioxide types (P25 and P90) with different active surface areas and two UV lamps (low-pressure and medium-pressure) on the effectiveness of FA and HA removal during photocatalysis was tested. An integrated photocatalytic + ultrafiltration system was also analyzed to determine the effectiveness of FA and HA removal and the changes in the relative permeate flux (Ultrafiltration Membrane Fouling-UF). We observed that photocatalysis using the P90 nano titanium dioxide was more efficient than the P25 due to the larger surface area (2×). The decomposition of organic substances proceeded efficiently up to 30 min of solution exposure, and the use of a medium-pressure lamp accelerated compound decomposition relative to the low-pressure lamp. The applied photocatalysis + ultrafiltration system was characterized by a high degree of FA removal while improved hydraulic efficiency was observed during ultrafiltration.https://www.mdpi.com/2073-4344/10/2/249photocatalysisnano titanium dioxidep25p90humic and fulvic acidsnomwater |
| spellingShingle | Mariola Rajca NOM (HA and FA) Reduction in Water Using Nano Titanium Dioxide Photocatalysts (P25 and P90) and Membranes Catalysts photocatalysis nano titanium dioxide p25 p90 humic and fulvic acids nom water |
| title | NOM (HA and FA) Reduction in Water Using Nano Titanium Dioxide Photocatalysts (P25 and P90) and Membranes |
| title_full | NOM (HA and FA) Reduction in Water Using Nano Titanium Dioxide Photocatalysts (P25 and P90) and Membranes |
| title_fullStr | NOM (HA and FA) Reduction in Water Using Nano Titanium Dioxide Photocatalysts (P25 and P90) and Membranes |
| title_full_unstemmed | NOM (HA and FA) Reduction in Water Using Nano Titanium Dioxide Photocatalysts (P25 and P90) and Membranes |
| title_short | NOM (HA and FA) Reduction in Water Using Nano Titanium Dioxide Photocatalysts (P25 and P90) and Membranes |
| title_sort | nom ha and fa reduction in water using nano titanium dioxide photocatalysts p25 and p90 and membranes |
| topic | photocatalysis nano titanium dioxide p25 p90 humic and fulvic acids nom water |
| url | https://www.mdpi.com/2073-4344/10/2/249 |
| work_keys_str_mv | AT mariolarajca nomhaandfareductioninwaterusingnanotitaniumdioxidephotocatalystsp25andp90andmembranes |