Triclosan, carbamazepine and caffeine removal by activated sludge system focusing on membrane bioreactor

Chtourou, Mariem; Mallek, Maryam; Dalmau, Montserrat; Mamo, Julian; Santos-Clotas, Eric; Salah, Abdelhamid Ben; Walha, Khaled; Salvadó, Victòria; Monclús, Héctor

doi:10.1016/j.psep.2018.06.019

Cited by 72 publications

(24 citation statements)

References 56 publications

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“…CBZ causes several harmful effects; therefore, it is necessary to remove these contaminants from industrial wastewater prior to discharge in wastewater (Cunningham et al 2010;Li et al 2015;Nielsen et al 2015). The removal of CBZ via different techniques, such as sedimentation, rapid sand filtration, chemical precipitation, metal salt coagulation, and reverse osmosis, is limited (Baghdadi et al 2016;Chtourou et al 2018;Liu et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Carbamazepine Removal from Aqueous Solution by Green Synthesis Zero-Valent Iron/Cu Nanoparticles with Ficus Benjamina Leaves’ Extract

Abdelaziz¹,

Farag

Abdel‐Gawad

2019

Int J Environ Res

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Green synthesis of nanoparticles is an eco-friendly treatment technique. Bimetallic nano zero-valent Fe/Cu was successfully prepared by green synthesis by Ficus Benjamina leaves (FB-ZVI/Cu). The nanoscale FB-ZVI/Cu was characterized by scanning electron microscope, Fourier transform infrared spectroscopy, and dispersive X-ray spectroscopy. The characterization revealed that synthesis and presence of iron-copper nanoparticles and biomolecules which could help in capping the bimetallic nanoparticles. Subsequently, nanoscale zero-valent Fe/Cu particles were used to remove carbamazepine from the aqueous medium under varying experimental conditions, including pH, initial carbamazepine concentration, Fe/CuNPs dose, stirring rate, and contact time. The removal efficiency of carbamazepine reached 95% under the condition of dose 0.4 g L −1 , time 20 min, and pH 5. The results were analyzed according to the Freundlich and Langmuir adsorption isotherms. The adsorption data are more appropriate by the Langmuir adsorption model (R 2 = 0.998) with q max = 26.15 mg g −1. Overall, FB-nZVFe/Cu is a promising green substance to remove carbamazepine from aqueous solutions. The effect of different operating parameters was investigated using linear regression analysis, they were found to account for more than 97% of the variables affecting the removal process. Article Highlights • Bimetallic nZVFe/Cu was synthesized using the Ficus Benjamina leaves' extracts. • Nanoparticles were characterized by SEM, EDAX, and FTIR. • The green-synthesized FB-nZVFe/Cu nanoparticles can remove carbamazepine from aqueous solutions. • Removing mechanism based on adsorption and reduction is proposed. • A high removal percentage of carbamazepine was 95%. • Lower FB-nZVI/Cu PZC values.

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Section: Introductionmentioning

confidence: 99%

Carbamazepine Removal from Aqueous Solution by Green Synthesis Zero-Valent Iron/Cu Nanoparticles with Ficus Benjamina Leaves’ Extract

Abdelaziz¹,

Farag

Abdel‐Gawad

2019

Int J Environ Res

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“…This study did not eliminate the pollutants but instead they were accumulated and pollutants were transferred from aqueous solution to the adsorbent phase [19]. Some another studies concerning an activated sludge system consisting of a membrane bioreactor, the removal was rather low, around 35% due to of recalcitrance [20], or gamma irradiation coupled with microbiological treatment. With this technology, almost 99% of CBZ could be removed, as well as decreasing the TOC by 80%.…”

Section: Introductionmentioning

confidence: 87%

Advanced Oxidation Process for Degradation of Carbamazepine from Aqueous Solution: Influence of Metal Modified Microporous, Mesoporous Catalysts on the Ozonation Process

et al. 2020

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Carbamazepine (CBZ), a widely used pharmaceutical compound, is one of the most detected drugs in surface waters. The purpose of this work was to identify an active and durable catalyst, which, in combination with an ozonation process, could be used to remove CBZ and its degradation products. It was found that the CBZ was completely transformed after ozonation within the first minutes of the treatment. However, the resulting degradation products, 1-(2-benzaldehyde)-4-hydro-(1H,3H)-quinazoline-2-one (BQM) and 1-(2-benzaldehyde)-(1H,3H)-quinazoline-2,4-dione (BQD), were more resistant during the ozonation process. The formation and degradation of these products were studied in more detail and a thorough catalytic screening was conducted to reveal the reaction kinetics of both the CBZ and its degradation products. The work was performed by non-catalytic ozonation and with six different heterogeneous catalysts (Pt-MCM-41-IS, Ru-MCM-41-IS, Pd-H-Y-12-EIM, Pt-H-Y-12-EIM, Pd-H-Beta-300-EIM and Cu-MCM-41-A-EIM) operating at two temperatures 20 °C and 50 °C. The influence of temperature on degradation kinetics of CBZ, BQM and BQD was studied. The results exhibited a notable difference in the catalytic behavior by varying temperature. The higher reactor temperature (50 °C) showed a higher activity of the catalysts but a lower concentration of dissolved ozone. Most of the catalysts exhibited higher removal rate for BQM and BQD compared to non-catalytic experiments in both temperatures. The Pd-H-Y-12-EIM catalyst illustrated a higher degradation rate of by-products at 50 °C compared to other catalysts.

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“…The ozonation of all three pharmaceutical drugs was evidenced to form N-oxidation products which failed to be degraded by the biodegradation experiments using activated sludge. Similarly, Chtourou et al (2018) [41] demonstrated that membrane bioreactor alone is not sufficient to achieve a satisfactory degradation (> 90%) due to the membrane fouling since a few drugs inhibited the microbe-assisted degradation processes. Since the conventional technologies alone are not suited for the efficient degradation of PhACs, some pre-treatment strategies such as adsorption techniques or hybrid processes would be required to achieve the desired water quality [40].…”

Section: Conventional Wastewater Treatment Methodsmentioning

confidence: 99%

Removal of Pharmaceutical Contaminants in Wastewater Using Nanomaterials: A Comprehensive Review

Chauhan

Sillu

Agnihotri

2019

CDM

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Background: The limitless presence of pharmaceutical contaminants in discharged wastewater has emerged as a threat to aquatic species and humans. Their presence in drinking water has although raised substantial concerns, very little is known about the fate and ecological impacts of these pollutants. As a result, these pollutants are inevitably introduced to our food chain at trace concentrations. Unfortunately, the conventional wastewater treatment techniques are unable to treat pharmaceuticals completely with practical limitations. The focus has now been shifted towards nanotechnology for the successful remediation of these persistent pollutants. Thus, the current review specifically focuses on providing readers brief yet sharp insights into applications of various nanomaterials for the removal of pharmaceutical contaminants. Methods: An exhaustive collection of bibliographic database was done with articles having high impact and citations in relevant research domains. An in-depth analysis of screened papers was done through standard tools. Studies were categorized according to the use of nanoscale materials as nano-adsorbents (graphene, carbon nanotubes), nanophotocatalysts (metal, metal oxide), nano-filtration, and ozonation for promising alternative technologies for the efficient removal of recalcitrant contaminants. Results: A total of 365 research articles were selected. The contemporary advancements in the field of nanomaterials for drinking and wastewater treatment have been thoroughly analyzed along with their future perspectives. Conclusion: The recommendations provided in this article will be useful to adopt novel strategies for on-site removal of the emerging contaminants in pharmaceutical effluents and related industries.

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Triclosan, carbamazepine and caffeine removal by activated sludge system focusing on membrane bioreactor

Cited by 72 publications

References 56 publications

Carbamazepine Removal from Aqueous Solution by Green Synthesis Zero-Valent Iron/Cu Nanoparticles with Ficus Benjamina Leaves’ Extract

Carbamazepine Removal from Aqueous Solution by Green Synthesis Zero-Valent Iron/Cu Nanoparticles with Ficus Benjamina Leaves’ Extract

Advanced Oxidation Process for Degradation of Carbamazepine from Aqueous Solution: Influence of Metal Modified Microporous, Mesoporous Catalysts on the Ozonation Process

Removal of Pharmaceutical Contaminants in Wastewater Using Nanomaterials: A Comprehensive Review

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