Occurrence, seasonal variations, and ecological risk of pharmaceuticals and personal care products in River Ganges at two holy cities of India

Singh, V. B.; Suthar, Surindra

doi:10.1016/j.chemosphere.2020.129331

Cited by 92 publications

(22 citation statements)

References 79 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…IBP is released into the environment mostly through wastewater due to its widespread usage, highly stable molecule, and incomplete breakdown in the human body, as well as the improper disposal practice of unused and expired IBP [24,26,27]. IBP is ubiquitous in surface, ground, and treated wastewater in concentrations ranging from a few ng/L to 6,000 μg/L and is also regularly detected in drinking water [2,24,[28][29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Response of Rhodococcus cerastii IEGM 1278 to toxic effects of ibuprofen

et al. 2021

View full text Add to dashboard Cite

The article expands our knowledge on the variety of biodegraders of ibuprofen, one of the most frequently detected non-steroidal anti-inflammatory drugs in the environment. We studied the dynamics of ibuprofen decomposition and its relationship with the physiological status of bacteria and with additional carbon and energy sources. The involvement of cytoplasmic enzymes in ibuprofen biodegradation was confirmed. Within the tested actinobacteria, Rhodococcus cerastii IEGM 1278 was capable of complete oxidation of 100 μg/L and 100 mg/L of ibuprofen in 30 h and 144 h, respectively, in the presence of an alternative carbon source (n-hexadecane). Besides, the presence of ibuprofen induced a transition of rhodococci from single- to multicellular lifeforms, a shift to more negative zeta potential values, and a decrease in the membrane permeability. The initial steps of ibuprofen biotransformation by R. cerastii IEGM 1278 involved the formation of hydroxylated and decarboxylated derivatives with higher phytotoxicity than the parent compound (ibuprofen). The data obtained indicate potential threats of this pharmaceutical pollutant and its metabolites to biota and natural ecosystems.

show abstract

Section: Introductionmentioning

confidence: 99%

Response of Rhodococcus cerastii IEGM 1278 to toxic effects of ibuprofen

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Currently, the pharmaceuticals emerging pollutants are more detected in the freshwater and wastewater worldwide that are known as Nonsteroidal anti-inflammatory drugs, lipid regulator, anticonvulsants, antibiotics, and β-blockers (Luo et al 2014;Patel et al 2020;Singh & Suthar 2021). Propranolol (PRO) is one of the most widely used β-blockers, it is prescribed as a treatment for multiple cardiovascular disorders, such as hypertension, angina pectoris, pheochromocytoma, cardiac arrhythmias, hypertrophic cardiomyopathy, and myocardial infarction (Al-Majed et al 2017;Hosseini et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Propranolol degradation through processes based on the generation of hydroxyl free radical

Aguilar

Mayorga-Santis

Gutiérrez-Hernández

et al. 2021

Journal of Water and Health

View full text Add to dashboard Cite

Pharmaceutical substances such as propranolol (PRO) are an emerging class of aquatic contaminants that have increasingly been detected in ground and surface water. For this reason, the aim of this study was to evaluate the efficiency of advanced oxidation systems for the PRO degradation. The tests started with anodic oxidation (AO), using 0.01, 0.05, and 0.1 M Na2SO4 as the supporting electrolyte and 16, 32, 48, and 64 mA cm−2 as current density. Under the best conditions obtained in AO, the electro-Fenton (EF) process was reviewed, where the effect of Fe2+ was analyzed with 5, 10, 15, and 20 mg Fe2+ L−1. The Fenton reaction (FR) was studied using the Fe2+ concentration that promoted the highest percentage of PRO removal and initial concentration of 16 mg L−1 of H2O2, in addition to these conditions, in the photo-Fenton (PF) system, the effect of UV light with wavelengths 254 and 365 nm were evaluated. The results obtained showed that the degradation efficiency of the EF > AO > PF > FR system along with a percent removal of 94.52, 90.4, 25.97, and 4.4%, respectively. The results showed that PRO can be removed through the studied systems, with the EF system being the most efficient.

show abstract

“…First, the homogeneous ozonation path was set to reactions (1)-( 9), where both (1) and (2) had an initializing role. Then, the generated ozonide radicals O −• 3 promoted the formation of hydroxyl radicals by reaction (3). It could consequently conduct homogeneous propagation reactions (5)- (9) or promote the hydroxyl attack on dissolved diclofenac molecules (4).…”

Section: Homogeneous Initializationmentioning

confidence: 99%

“…In the last two decades, an extensive list of pharmaceuticals and personal care products has ranked as contaminants of emerging concern (CECs). They have been frequently found in aqueous systems disrupting the normal development of the local biota [1][2][3]. The main concerns among these substances are their recalcitrant and cumulative behavior over the ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Mechanistic Model and Optimization of the Diclofenac Degradation Kinetic for Ozonation Processes Intensification

Acosta-Angulo

Lara-Ramos

Díaz-Angulo

et al. 2021

Water

View full text Add to dashboard Cite

This work focused on estimating the rate constants for three ozone-based processes applied in the degradation of diclofenac. The ozonation (Oz) and its intensification with catalysis (COz) and photocatalysis (PCOz) were studied. Three mathematical models were evaluated with a genetic algorithm (GA) to find the optimal values for the kinetics constants. The Theil inequality coefficient (TIC) worked as a criterion to assess the models’ deviation. The diclofenac consumption followed a slow kinetic regime according to the Hatta number (Ha<0.3). However, it strongly contrasted with earlier studies. The obtained values for the volumetric rate of photon absorption (VRPA) corresponding to the PCOz process (1.75×10−6 & 6.54×10−7 Einstein L−1 min−1) were significantly distant from the maximum (2.59×10−5 Einstein L−1 min−1). The computed profiles of chemical species proved that no significant amount of hydroxyl radicals was produced in the Oz, whereas the PCOz achieved the highest production rate. According to this, titanium dioxide significantly contributed to ozone decomposition, especially at low ozone doses. Although the models’ prediction described a good agreement with the experimental data (TIC<0.3), the optimization algorithm was likely to have masked the rate constants as they had highly deviated from already reported values.

show abstract

Occurrence, seasonal variations, and ecological risk of pharmaceuticals and personal care products in River Ganges at two holy cities of India

Cited by 92 publications

References 79 publications

Response of Rhodococcus cerastii IEGM 1278 to toxic effects of ibuprofen

Response of Rhodococcus cerastii IEGM 1278 to toxic effects of ibuprofen

Propranolol degradation through processes based on the generation of hydroxyl free radical

Mechanistic Model and Optimization of the Diclofenac Degradation Kinetic for Ozonation Processes Intensification

Contact Info

Product

Resources

About