Efficiency of advanced wastewater treatment plant system and laboratory-scale micelle-clay filtration for the removal of ibuprofen residues

Khalaf, Samer; Al‐Rimawi, Fuad; Khamis, Mustafa; Zimmerman, Dikla; Shuali, Uri; Nir, Shlomo; Scrano, Laura; Bufo, Sabino Aurelio; Karaman, Rafik

doi:10.1080/03601234.2013.781372

Cited by 31 publications

(31 citation statements)

References 28 publications

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“…[30,30,[34][35][36]47] Khamis et al [30] concluded that the incorporation of micelle-clay filters in sewage treatment systems with lose of tertiary capability can be a promising technology. In a recent paper, Karaman et al [31] showed that micelle-clay filters were more efficient towards removal of diclofenac from wastewater than activated carbon.…”

Section: Filtration Resultsmentioning

confidence: 99%

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Stability and removal of atorvastatin, rosuvastatin and simvastatin from wastewater

Sulaiman

Khamis

Nir

et al. 2015

Environmental Technology

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Atorvastatin (ATO), rosuvastatin (RST) and simvastatin (SIM) are commonly used drugs that belong to the statin family (lowering human blood cholesterol levels) and have been detected as contaminants in natural waters. Stability and removal of ATO, RST and SIM from spiked wastewater produced at the Al-Quds University campus were investigated. All three statins were found to undergo degradation in wastewater (activated sludge). The degradation reactions of the three drugs in wastewater at room temperature follow first-order kinetics with rate constants of 2.2 × 10⁻⁷ s⁻¹ (ATO), 1.8 × 10⁻⁷ s⁻¹ (RST) and 1.8 × 10⁻⁶ s⁻¹ (SIM), which are larger than those obtained in pure water under the same conditions, 1.9 × 10⁻⁸ s⁻¹ (ATO), 2.2 × 10⁻⁸ s⁻¹ (RST) and 6.2 × 10⁻⁷ s⁻¹ (SIM). Degradation products were identified by LC-MS and LC/MS/MS. The overall performance of the wastewater treatment plant (WWTP) installed in the Al-Quds University campus towards the removal of these drugs was assessed showing that more than 90% of spiked ATO, RST and SIM were removed. In order to evaluate the efficiency of alternative removal methods to replace ultra-filtration membranes, adsorption isotherms for the three statins were investigated using both activated carbon and clay-micelle complex as adsorbents. The batch adsorption isotherms for the three statins were found to fit the Langmuir equation, with a larger number of adsorption sites and binding affinity for micelle-clay composite compared with activated carbon and filtration experiments of the three statins and their corresponding metabolites demonstrated a more efficient removal by micelle-clay filters.

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Section: Filtration Resultsmentioning

confidence: 99%

“…More recently, Khalaf et al [47] suggested that the integration of clay-micelle complex filters in existing WWTPs may be helpful for improving removal efficiency of recalcitrant residues of non-steroid anti-inflammatory drugs.…”

Section: Drugmentioning

confidence: 99%

Stability and removal of atorvastatin, rosuvastatin and simvastatin from wastewater

Sulaiman

Khamis

Nir

et al. 2015

Environmental Technology

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“…It has been shown by X-ray diffraction, electron microscopy, and adsorption experiments that the material characteristics of the micelle-clay complex are different from those of an organo-clay complex, which is formed by adsorption of the same organic cations ODTMA as monomers [28]. Micelle-clay composites have already been proven to be efficient in the removal of about 20 neutral and anionic pollutants [18,[21][22][23][24][25][26][27]31,32].…”

Section: Adsorption Isothermsmentioning

confidence: 99%

“…The obtained complex by virtue of its positive charge and hydrophobic region is capable of efficiently binding neutral and negatively charged organic molecules [18,[21][22][23][24]28]. …”

Section: Micelle-clay Complex Preparationmentioning

confidence: 99%

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Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle–clay complex

Sulaiman

Khamis

Nir

et al. 2016

Desalination and Water Treatment

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A B S T R A C TStability 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 .

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Sorption mechansim of pharmaceuticals from aqueous medium on ionic liquid modified biomass

Lawal

Moodley

2016

J of Chemical Tech & Biotech

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BACKGROUND The global use of antibiotics has become a serious concern because of its variety of potential adverse effects when present in the environment. Acute and chronic toxicity, impact on aquatic organisms, disruption of microbial populations, and dissemination into antibiotic‐resistant genes have reportedly been linked to pharmaceuticals. Therefore, the aim of this study was to investigate the mechanism of remediation of some selected pharmaceuticals in aqueous medium on ionic liquid modified biomass. RESULTS The mechanism of sorption of pharmaceuticals on biomass and biomass modified with an ionic liquid (IL) was investigated. Kigelia pinnata (KP) was modified with IL to form modified biomass (KP‐IL). The pharmaceuticals investigated were ibuprofen (IBU), ketoprofen (KET), ampicillin (AMP) and diclofenac (DCL). Optimum adsorption was at pH 2.5 for AMP and pH 5 for IBU, KET and DCL. Sorption data for all the pharmaceuticals were best described by pseudo‐second‐order kinetics and the Langmuir adsorption isotherm. Maximum sorption capacities of 251.2, 197.1, 276.8 and 73 mg g−1 were obtained for KET, DCL, IBU and AMP, respectively. CONCLUSION The study showed that KP‐IL is a good material for the remediation of pharmaceuticals, and the adsorption capacity was far better than that of the unmodified KP and biomasses previously reported in literature. © 2016 Society of Chemical Industry

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Efficiency of advanced wastewater treatment plant system and laboratory-scale micelle-clay filtration for the removal of ibuprofen residues

Cited by 31 publications

References 28 publications

Stability and removal of atorvastatin, rosuvastatin and simvastatin from wastewater

Stability and removal of atorvastatin, rosuvastatin and simvastatin from wastewater

Diazepam stability in wastewater and removal by advanced membrane technology, activated carbon, and micelle–clay complex

Sorption mechansim of pharmaceuticals from aqueous medium on ionic liquid modified biomass

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