Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle-clay complex
Stability and removal of the anti-anxiety drug diazepam (valium) from spiked wastewater samples were studied. An advanced wastewater treatment plant (WWTP), utilizing ultrafiltration (UF), activated charcoal (AC), and reverse osmosis (RO) after the secondary biological treatment showed that UF and R...
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2016
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| Online Access: | http://hdl.handle.net/11073/8222 |
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| _version_ | 1864513441258012672 |
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| author | Sulaiman, Saleh |
| author2 | Khamis, Mustafa Nir, Shlomo scrano, laura Bufo, Sabino A. Karaman, Rafik |
| author2_role | author author author author author |
| author_facet | Sulaiman, Saleh Khamis, Mustafa Nir, Shlomo scrano, laura Bufo, Sabino A. Karaman, Rafik |
| author_role | author |
| dc.creator.none.fl_str_mv | Sulaiman, Saleh Khamis, Mustafa Nir, Shlomo scrano, laura Bufo, Sabino A. Karaman, Rafik |
| dc.date.none.fl_str_mv | 2016-03-08T07:47:18Z 2016-03-08T07:47:18Z 2016 |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | Suleiman, S., Mustafa Khamis, S. Nir, L. Scrano, S. Bufo, and R. Karaman. "Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle–clay complex." Daslin. Water Treat 1-9, no. 2014 (2014): 1-9. 1944-3994 1944-3986 http://hdl.handle.net/11073/8222 10.1080/19443994.2014.981225 |
| dc.language.none.fl_str_mv | en_US |
| dc.relation.none.fl_str_mv | https://doi.org/10.1080/19443994.2014.981225 |
| dc.subject.none.fl_str_mv | Diazepam Wastewater treatment Stability in sludge HF membranes Activated carbon Micelle-clay complex |
| dc.title.none.fl_str_mv | Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle-clay complex |
| dc.type.none.fl_str_mv | info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | Stability and removal of the anti-anxiety drug diazepam (valium) from spiked wastewater samples were studied. An advanced wastewater treatment plant (WWTP), utilizing ultrafiltration (UF), activated charcoal (AC), and reverse osmosis (RO) after the secondary biological treatment showed that UF and RO were relatively sufficient in removing spiked diazepam to a safe level. Kinetic studies in both pure water (abiotic degradation) and in sludge (biotic degradation) at room temperature were investigated. Diazepam showed high chemical stability toward degradation in pure water, and underwent faster biodegradation in sludge providing two main degradation products. The degradation reactions in sludge and pure water showed first-order kinetics with rate constant values of 2.6 � 10?7 s?1 and 9.08 � 10?8 s?1, respectively (half-life = 31 and 88 d, respectively). Adsorption of diazepam by activated carbon and composite micelle�clay (octadecyltrimethylammonium montmorillonite) complex was studied using both Langmuir and Freundlich isotherms. Based on the determination coefficient, Langmuir isotherm was found to better fit the data, indicating the retention of diazepam monolayer on both adsorbents. Filtration of 100 mg L?1 solutions of diazepam by micelle�clay filter yielded almost complete removal at flow rates of 2 mL min?1. |
| format | article |
| id | aus_47173d2de6eea94ef08c83114fbe2fd8 |
| identifier_str_mv | Suleiman, S., Mustafa Khamis, S. Nir, L. Scrano, S. Bufo, and R. Karaman. "Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle–clay complex." Daslin. Water Treat 1-9, no. 2014 (2014): 1-9. 1944-3994 1944-3986 10.1080/19443994.2014.981225 |
| language_invalid_str_mv | en_US |
| network_acronym_str | aus |
| network_name_str | aus |
| oai_identifier_str | oai:repository.aus.edu:11073/8222 |
| publishDate | 2016 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle-clay complexSulaiman, SalehKhamis, MustafaNir, Shlomoscrano, lauraBufo, Sabino A.Karaman, RafikDiazepamWastewater treatmentStability in sludgeHF membranesActivated carbonMicelle-clay complexStability and removal of the anti-anxiety drug diazepam (valium) from spiked wastewater samples were studied. An advanced wastewater treatment plant (WWTP), utilizing ultrafiltration (UF), activated charcoal (AC), and reverse osmosis (RO) after the secondary biological treatment showed that UF and RO were relatively sufficient in removing spiked diazepam to a safe level. Kinetic studies in both pure water (abiotic degradation) and in sludge (biotic degradation) at room temperature were investigated. Diazepam showed high chemical stability toward degradation in pure water, and underwent faster biodegradation in sludge providing two main degradation products. The degradation reactions in sludge and pure water showed first-order kinetics with rate constant values of 2.6 � 10?7 s?1 and 9.08 � 10?8 s?1, respectively (half-life = 31 and 88 d, respectively). Adsorption of diazepam by activated carbon and composite micelle�clay (octadecyltrimethylammonium montmorillonite) complex was studied using both Langmuir and Freundlich isotherms. Based on the determination coefficient, Langmuir isotherm was found to better fit the data, indicating the retention of diazepam monolayer on both adsorbents. Filtration of 100 mg L?1 solutions of diazepam by micelle�clay filter yielded almost complete removal at flow rates of 2 mL min?1.2016-03-08T07:47:18Z2016-03-08T07:47:18Z2016info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfSuleiman, S., Mustafa Khamis, S. Nir, L. Scrano, S. Bufo, and R. Karaman. "Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle–clay complex." Daslin. Water Treat 1-9, no. 2014 (2014): 1-9.1944-39941944-3986http://hdl.handle.net/11073/822210.1080/19443994.2014.981225en_UShttps://doi.org/10.1080/19443994.2014.981225oai:repository.aus.edu:11073/82222024-08-22T12:16:39Z |
| spellingShingle | Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle-clay complex Sulaiman, Saleh Diazepam Wastewater treatment Stability in sludge HF membranes Activated carbon Micelle-clay complex |
| status_str | publishedVersion |
| title | Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle-clay complex |
| title_full | Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle-clay complex |
| title_fullStr | Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle-clay complex |
| title_full_unstemmed | Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle-clay complex |
| title_short | Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle-clay complex |
| title_sort | Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle-clay complex |
| topic | Diazepam Wastewater treatment Stability in sludge HF membranes Activated carbon Micelle-clay complex |
| url | http://hdl.handle.net/11073/8222 |