Feasibility of the solar/chlorine treatment for lipid regulator degradation in simulated and real waters: The oxidation chemistry and affecting factors

Wang, Liping; Fang, Jingyun; Zhang, Xiang; Xu, Xibing; Kong, Xiujuan; Wu, Zihao; Hua, Zhechao; Ren, Ziran; Guo, Kaiheng

doi:10.1016/j.chemosphere.2019.03.102

Cited by 11 publications

(4 citation statements)

References 49 publications

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“…This observation is consistent with previous literature that reported negligible degradation of 5 mM CA by chlorination (50-100 mM) at pH 5. 39,40 In contrast, rapid degradation of CA was observed during the freezing process under the same experimental conditions, wherein the concentration of CA in the ice sample gradually decreased over the reaction time, with only ∼3 mM of CA remaining aer 20 minutes of reaction. In addition, the degradation of CA in ice was found to be negligible in the absence of chlorine, implying that chlorine plays a crucial role as the sole oxidant in the degradation of CA.…”

Section: Enhanced Degradation Of Clobric Acid (Ca) By Chlorine In Icementioning

confidence: 93%

Freezing-enhanced chlorination of organic pollutants for water treatment

Wu,

Li,

et al. 2024

RSC Adv.

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Section: Enhanced Degradation Of Clobric Acid (Ca) By Chlorine In Icementioning

confidence: 93%

Freezing-enhanced chlorination of organic pollutants for water treatment

Wu,

Li,

et al. 2024

RSC Adv.

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“…Lipid regulators are widely used for the treatment of hyperlipidemia and are among the most common pharmaceuticals in wastewater. The current commonly used lipid regulators are gemfibrozil, bezafibrate, fenofibrate, and clofibric acid (Wang et al 2019). More than 264 million people worldwide suffer from depression.…”

Section: Introductionmentioning

confidence: 99%

Fate of selected pharmaceuticals in hospital and municipal wastewater effluent: occurrence, removal, and environmental risk assessment

Ulvi

Aydın

2022

Environ Sci Pollut Res

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The concentrations and distribution of β-blockers, lipid regulators, and psychiatric and cancer drugs in the influent and effluent of the municipal wastewater treatment plant (WWTP) and the effluent of 16 hospitals that discharge into the wastewater treatment plant mentioned in this study at two sampling dates in summer and winter were examined. The pharmaceutical contribution of hospitals to municipal wastewater was determined. The removal of target pharmaceuticals was evaluated in a WWTP consisting of conventional biological treatment using activated sludge. Additionally, the potential environmental risk for the aquatic receiving environments (salt lake) was assessed. Beta-blockers and psychiatric drugs were detected in high concentrations in the wastewater samples. Atenolol (919 ng/L) from β-blockers and carbamazepine (7008 ng/L) from psychiatric pharmaceuticals were detected at the highest concentrations in hospital wastewater. The total pharmaceutical concentration determined at the WWTP influent and effluent was between 335 and 737 ng/L in summer and between 174 and 226 ng/L in winter. The concentrations detected in hospital effluents are higher than the concentrations detected in WWTP. The total pharmaceutical contributions from hospitals to the WWTP in summer and winter were determined to be 2% and 4%, respectively. Total pharmaceutical removal in the WWTP ranged from 23 to 54%. According to the risk ratios, atenolol could pose a high risk (risk quotient > 10) for fish in summer and winter. There are different reasons for the increase in pharmaceutical consumption in recent years. One of these reasons is the COVID-19 pandemic, which has been going on for 2 years. In particular, hospitals were operated at full capacity during the pandemic, and the occurrence and concentration of pharmaceuticals used for the therapy of COVID-19 patients has increased in hospital effluent. Pandemic conditions have increased the tendency of people to use psychiatric drugs. It is thought that beta-blocker consumption has increased due to cardiovascular diseases caused by COVID-19. Therefore, the environmental risk of pharmaceuticals for aquatic organisms in hospital effluent should be monitored and evaluated.

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“…It is classified as a bioactive metabolite of the clofibrate. This compound is considered as a one of the most frequently encountered major drug metabolite detected in the aquatic environment at ng/L-mg/L level (Wang et al 2019 ; Ulvi et al 2022 ). However, this molecule is recognized to be extremely resistant to biodegradation as well as other removal process like adsorption and hydrolysis, which remain its concentration at high level in the environment for a long time (Hemidouche et al 2018 ; Dordio et al 2009 ).…”

Section: Introductionmentioning

confidence: 99%

ZnO-Zn2TiO4 heterostructure for highly efficient photocatalytic degradation of pharmaceuticals

Janani

Khiar

Taoufik

et al. 2022

Environ Sci Pollut Res

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In this study, ZnO-Zn 2 TiO 4 (ZTM) material was prepared through a novel synthesis method based on a ultrasound-assisted polyol-mediated process followed by calcination at a different temperature. Physical features of the samples were studied by using various analysis techniques including XRD, FT-IR, SEM/EDX, pH PZC , and UV–Vis DRS. Subsequently, the materials were employed as catalysts for the photocatalytic degradation of clofibric acid as a model pharmaceutical contaminant. The photocatalytic performance was evaluated under different conditions of calcination temperature, catalyst dosage, starting concentration, and initial pH of clofibric acid solution. The finding results revealed that hexagonal-tetragonal phases of ZnO-Zn 2 TiO 4 calcined at 600 °C (ZTM-600) with an average crystallite size of 97.8 Å exhibited the best degradation efficiency (99%). The primary bands characteristic of ZnO and Zn 2 TiO 4 were displayed by FT-IR analysis and the UV–visible DRS confirms the larger absorption capacity in UV–visible regions. The photogenerated electrons are the powerful reactive species involved in clofibric acid photodegradation process. This study shows a promising photocatalyst and provides new sight to rational design the facets of photocatalysis process for enhanced photocatalytic performances and effective wastewater treatment.

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Feasibility of the solar/chlorine treatment for lipid regulator degradation in simulated and real waters: The oxidation chemistry and affecting factors

Cited by 11 publications

References 49 publications

Freezing-enhanced chlorination of organic pollutants for water treatment

Freezing-enhanced chlorination of organic pollutants for water treatment

Fate of selected pharmaceuticals in hospital and municipal wastewater effluent: occurrence, removal, and environmental risk assessment

ZnO-Zn2TiO4 heterostructure for highly efficient photocatalytic degradation of pharmaceuticals

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