Removal of pharmaceutically active compounds (PhACs) from real membrane bioreactor (MBR) effluents by photocatalytic degradation using composite Ag2O/P-25 photocatalyst

Gurung, Khum; Ncibi, Mohamed Chaker; Thangaraj, Senthil K.; Jänis, Janne; Seyedsalehi, Mahdi; Sillanpää, Mika

doi:10.1016/j.seppur.2018.12.069

Cited by 40 publications

(9 citation statements)

References 60 publications

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“…[54][55][56] Thus, it is possible to calculate the pseudo-rst kinetic constant (K 0 ) and the half-life times (T 1/2 ) for each reaction using eqn ( 6) and (7), and plotting the graph of ln [C/C 0 ] versus time (Fig. 1c) based on eqn (7), where k is the slope of the generated line and C is the concentration in each time, C 0 is the initial concentration and t is the time. The half-life for each reaction was also calculated using the eqn (7).…”

Section: Effect Of Mass On Photodegradationmentioning

confidence: 99%

“…1c) based on eqn (7), where k is the slope of the generated line and C is the concentration in each time, C 0 is the initial concentration and t is the time. The half-life for each reaction was also calculated using the eqn (7).…”

Section: Effect Of Mass On Photodegradationmentioning

confidence: 99%

“…6 Pharmaceutical wastes can easily found in the water system because the vast majority of sewage treatment plants lack the ability to retain or degrade these substances. [7][8][9][10] Therefore, it is necessary to develop new methods of removing or deplete these products from the environment. An alternative to this issue is the advanced oxidative processes (AOPs).…”

Section: Introductionmentioning

confidence: 99%

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Photocatalytic degradation of ibuprofen using titanium oxide: insights into the mechanism and preferential attack of radicals

et al. 2021

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Section: Effect Of Mass On Photodegradationmentioning

confidence: 99%

Section: Effect Of Mass On Photodegradationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Photocatalytic degradation of ibuprofen using titanium oxide: insights into the mechanism and preferential attack of radicals

et al. 2021

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“…In the literature, different technologies for CBZ removal from contaminated water are reported [4,[11][12][13]. These technologies are mainly based on electrochemical oxidation [14,15], solar photolysis [16,17], photocatalysis [18][19][20], osmotic membrane separation [12,21], ion exchange [22,23], persulfate oxidation [24], ultrasound/persulfate anions oxidation [25], dielectric barrier discharge process [26,27] and ozone/ultraviolet/hydrogen peroxide advanced oxidation [28,29]. Among them, adsorption is the most used technology for its high efficiency and lower operating costs [30][31][32]; the first quantitative experiments about this technology involved the study of gas adsorption on charcoal (which was later called "activated carbon") and clay [33].…”

Section: Introductionmentioning

confidence: 99%

A Review on the Removal of Carbamazepine from Aqueous Solution by Using Activated Carbon and Biochar

et al. 2021

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Carbamazepine (CBZ), one of the most used pharmaceuticals worldwide and a Contaminant of Emerging Concern, represents a potential risk for the environment and human health. Wastewater treatment plants (WWTPs) are a significant source of CBZ to the environment, polluting the whole water cycle. In this review, the CBZ presence and fate in the urban water cycle are addressed, with a focus on adsorption as a possible solution for its removal. Specifically, the scientific literature on CBZ removal by activated carbon and its possible substitute Biochar, is comprehensively scanned and summed up, in view of increasing the circularity in water treatments. CBZ adsorption onto activated carbon and biochar is analyzed considering several aspects, such as physicochemical characteristics of the adsorbents, operational conditions of the adsorption processes and adsorption kinetics and isotherms models. WWTPs usually show almost no removal of CBZ (even negative), whereas removal is witnessed in drinking water treatment plants through advanced treatments (even >90%). Among these, adsorption is considered one of the preferable methods, being economical and easier to operate. Adsorption capacity of CBZ is influenced by the characteristics of the adsorbent precursors, pyrolysis temperature and modification or activation processes. Among operational conditions, pH shows low influence on the process, as CBZ has no charge in most pH ranges. Differently, increasing temperature and rotational speed favor the adsorption of CBZ. The presence of other micro-contaminants and organic matter decreases the CBZ adsorption due to competition effects. These results, however, concern mainly laboratory-scale studies, hence, full-scale investigations are recommended to take into account the complexity of the real conditions.

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“…They are classified into eight groups of anti-inflammatory drugs, beta-blockers, antibiotics, antiepileptic, hormones, lipid-lowering agents, antihistamines and anti-depressants based on their therapeutic applications [3,4]. Among all the contaminant pharmaceutical products, antibiotics have a high consumption rate in both human and veterinary medicines [5]. Unfortunately, the abuse of antibiotics has made severe concerns because of their biological activity, high persistency and toxic effects on ecosystems [6].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic study of nanocomposite membrane modified by CeF3 catalyst for pharmaceutical wastewater treatment

Zakeritabar

Jahanshahi

Peyravi

et al. 2020

J Environ Health Sci Engineer

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Cerium fluoride (CeF 3 ) nanoparticles (NPs) were synthesized and applied in polysulfone (PS) membrane fabricated by phase inversion method. The produced nanocomposite membranes (PS/CeF 3 ) with different contents of CeF3 NPS (0.25%, 0.5%, 0.75% and 1% w/w) were used to treat pharmaceutical wastewaters. The membranes were characterized by FESEM, EDX, XRD, FTIR, porosity, and water contact angle analyses. Evaluation of the characteristics and performance of the nanocomposite membranes confirmed that utilizing photocatalytic CeF 3 NPs in membrane structure could effectively decompose organic contaminants in pharmaceutical wastewaters. It also improves the hydrophilicity and antifouling ability of membrane during filtration especially, in the presence of UV irradiation. The permeate flux of the PS membrane increased from 35.1 to 63.77 l/m 2 h by embedding 0.75% of CeF 3 NPs in membrane structure due to the porosity enhancement from 71.36-78.42% and the decrease in contact angle from 62.9º to 53.73º. Moreover, the flux decline of PS/CeF 3 -0.75% membrane under UV irradiation was from 63.6 to 46.1 l/m 2 h that considerably lower than that of the neat PS membrane (from 34.7 to 4.9). On the other hand, the degradation efficiency of PS/CeF 3 -0.75% membrane was more than 97%, and COD removed was more than 65% while they were 75% and 31%, respectively for the nascent PS membrane. Therefore, applying the appropriate amount of CeF 3 NPs in PS membranes not only greatly increased the permeate flux but also significantly enhanced the degradation efficiency and COD removal. This indicates that nanocomposite membranes can be confidently applied for pharmaceutical wastewater treatment UV irradiation.

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Removal of pharmaceutically active compounds (PhACs) from real membrane bioreactor (MBR) effluents by photocatalytic degradation using composite Ag2O/P-25 photocatalyst

Cited by 40 publications

References 60 publications

Photocatalytic degradation of ibuprofen using titanium oxide: insights into the mechanism and preferential attack of radicals

Photocatalytic degradation of ibuprofen using titanium oxide: insights into the mechanism and preferential attack of radicals

A Review on the Removal of Carbamazepine from Aqueous Solution by Using Activated Carbon and Biochar

Photocatalytic study of nanocomposite membrane modified by CeF3 catalyst for pharmaceutical wastewater treatment

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