Continuous photocatalytic set-up assisted with nano TiO2 plate for tannery wastewater treatment
A novel photocatalytic continuous system has been proposed for the treatment of tannery waste water, which has high levels of environmental pollutants. The purification process was performed by passing wastewater on a titanium dioxide (TiO2)-coated surface, which is continuously activated by irradia...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IWA Publishing
2021-06-01
|
| Series: | Water Science and Technology |
| Subjects: | |
| Online Access: | http://wst.iwaponline.com/content/83/11/2732 |
| _version_ | 1818953858672492544 |
|---|---|
| author | Reza Shahbazi Mona Zamani Pedram |
| author_facet | Reza Shahbazi Mona Zamani Pedram |
| author_sort | Reza Shahbazi |
| collection | DOAJ |
| description | A novel photocatalytic continuous system has been proposed for the treatment of tannery waste water, which has high levels of environmental pollutants. The purification process was performed by passing wastewater on a titanium dioxide (TiO2)-coated surface, which is continuously activated by irradiation of ultraviolet light. To improve the yield of the process, ferric chloride (FeCl3) was used as a coagulation agent. The organic and inorganic compounds, as well as the microorganisms in the tannery wastewater media, were degraded through a photocatalytic process. The results revealed that total dissolved solids and total suspended solids contents were significantly decreased from 8,450 and 8,990 mg·L−1 to 4,032 and 4,127 mg·L−1, respectively. Furthermore, the chemical oxygen demand content of the sample was reduced from 370 to 50 mg·L−1 after the addition of 100 mL of FeCl3 and 4 h of treatment. The same results were observed for the elimination of sulfate and chromium ions, which led to a decline in electrical conductivity. This suggests that introducing 100 mL of FeCl3 as the coagulation agent and continuous treatment with photocatalityc set-up could be considered as an effective method for the purification of tannery wastewaters. HIGHLIGHTS
Continuous set-up fabricated for tannery wastewater treatment using photocatalytic reactions.;
TiO2 photocatalyst activated by UV light for improvement of purification yield.;
FeCl3, as coagulation agent, facilitated treatment by removing total dissolved solids.;
Toxic ions and microorganisms were eliminated in this method.; |
| first_indexed | 2024-12-20T10:12:57Z |
| format | Article |
| id | doaj.art-c353691effd6448dab977f59292dd1ad |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-12-20T10:12:57Z |
| publishDate | 2021-06-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-c353691effd6448dab977f59292dd1ad2022-12-21T19:44:07ZengIWA PublishingWater Science and Technology0273-12231996-97322021-06-0183112732274310.2166/wst.2021.164164Continuous photocatalytic set-up assisted with nano TiO2 plate for tannery wastewater treatmentReza Shahbazi0Mona Zamani Pedram1 Faculty of Mechanical Engineering-Energy Division, K.N. Toosi University of Technology, P.O. Box: 19395-1999, No. 15-19, Pardis St., Mollasadra Ave., Vanak Sq., Tehran 1999 143344, Iran Faculty of Mechanical Engineering-Energy Division, K.N. Toosi University of Technology, P.O. Box: 19395-1999, No. 15-19, Pardis St., Mollasadra Ave., Vanak Sq., Tehran 1999 143344, Iran A novel photocatalytic continuous system has been proposed for the treatment of tannery waste water, which has high levels of environmental pollutants. The purification process was performed by passing wastewater on a titanium dioxide (TiO2)-coated surface, which is continuously activated by irradiation of ultraviolet light. To improve the yield of the process, ferric chloride (FeCl3) was used as a coagulation agent. The organic and inorganic compounds, as well as the microorganisms in the tannery wastewater media, were degraded through a photocatalytic process. The results revealed that total dissolved solids and total suspended solids contents were significantly decreased from 8,450 and 8,990 mg·L−1 to 4,032 and 4,127 mg·L−1, respectively. Furthermore, the chemical oxygen demand content of the sample was reduced from 370 to 50 mg·L−1 after the addition of 100 mL of FeCl3 and 4 h of treatment. The same results were observed for the elimination of sulfate and chromium ions, which led to a decline in electrical conductivity. This suggests that introducing 100 mL of FeCl3 as the coagulation agent and continuous treatment with photocatalityc set-up could be considered as an effective method for the purification of tannery wastewaters. HIGHLIGHTS Continuous set-up fabricated for tannery wastewater treatment using photocatalytic reactions.; TiO2 photocatalyst activated by UV light for improvement of purification yield.; FeCl3, as coagulation agent, facilitated treatment by removing total dissolved solids.; Toxic ions and microorganisms were eliminated in this method.;http://wst.iwaponline.com/content/83/11/2732photocatalystphotoreactortannery wastewatertio2wastewater |
| spellingShingle | Reza Shahbazi Mona Zamani Pedram Continuous photocatalytic set-up assisted with nano TiO2 plate for tannery wastewater treatment Water Science and Technology photocatalyst photoreactor tannery wastewater tio2 wastewater |
| title | Continuous photocatalytic set-up assisted with nano TiO2 plate for tannery wastewater treatment |
| title_full | Continuous photocatalytic set-up assisted with nano TiO2 plate for tannery wastewater treatment |
| title_fullStr | Continuous photocatalytic set-up assisted with nano TiO2 plate for tannery wastewater treatment |
| title_full_unstemmed | Continuous photocatalytic set-up assisted with nano TiO2 plate for tannery wastewater treatment |
| title_short | Continuous photocatalytic set-up assisted with nano TiO2 plate for tannery wastewater treatment |
| title_sort | continuous photocatalytic set up assisted with nano tio2 plate for tannery wastewater treatment |
| topic | photocatalyst photoreactor tannery wastewater tio2 wastewater |
| url | http://wst.iwaponline.com/content/83/11/2732 |
| work_keys_str_mv | AT rezashahbazi continuousphotocatalyticsetupassistedwithnanotio2platefortannerywastewatertreatment AT monazamanipedram continuousphotocatalyticsetupassistedwithnanotio2platefortannerywastewatertreatment |