Review on Emerging Pollutants and Advanced Oxidation Processes.

Johnson, GeaseanJ.; Bullen, LendonA.; Akil., MohamadRidhuanbinMohd

doi:10.21474/ijar01/3412

Cited by 4 publications

(1 citation statement)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The concern about water pollution by persistent organic pollutants is growing in parallel to the development of more efficient advanced oxidation processes (AOPs) for their destruction (Antonopoulou et al, 2014;Oturan and Aaron, 2014;Fernández-Castro et al, 2015;Johnson et al, 2017). Reactive oxygen species (ROS) such as hydroxyl radical ( OH) generated on site account for the high oxidation power of AOPs.…”

Section: Introductionmentioning

confidence: 99%

On the performance of electrocatalytic anodes for photoelectro-Fenton treatment of synthetic solutions and real water spiked with the herbicide chloramben

Thiam

Sirés

Salazar

et al. 2018

Journal of Environmental Management

View full text Add to dashboard Cite

The destruction of the herbicide chloramben in 0.050 M NaSO solutions at natural pH has been studied by photoelectro-Fenton with UVA light (PEF). The trials were carried out in a cell equipped with an air-diffusion cathode for HO generation and different electrocatalytic anodes, namely active IrO-based and RuO-based electrodes and non-active boron-doped diamond (BDD) and PbO ones. Similar removal rates were found regardless of the anode nature because the herbicide was mainly oxidized by OH formed from Fenton's reaction, which was enhanced by UVA-induced photo-Fenton reaction. The use of an IrO-based anode led to almost total mineralization at high current density, as also occurred with the powerful BDD anode, since photoactive intermediates originated from OH-mediated oxidation were degraded under irradiation with UVA light. The good performance of the IrO-based anode in PEF was confirmed at different current densities and herbicide concentrations. The presence of Cl in the medium caused a slight deceleration of herbicide removal as well as mineralization inhibition, owing to the production of active chlorine with consequent formation of persistent chloroderivatives. Seven aromatic products along with oxalic and oxamic acids were identified in sulfate medium. Five aromatic derivatives were detected in Cl-containing matrix, corroborating the generation of organochlorine compounds. In secondary effluent, larger mineralization was achieved by PEF with a BDD anode due to its high oxidation ability to destroy the chloroderivatives, although an acceptable performance was also obtained using an IrO-based anode.

show abstract

Section: Introductionmentioning

confidence: 99%

On the performance of electrocatalytic anodes for photoelectro-Fenton treatment of synthetic solutions and real water spiked with the herbicide chloramben

Thiam

Sirés

Salazar

et al. 2018

Journal of Environmental Management

View full text Add to dashboard Cite

show abstract

Modeling the pH and temperature dependence of aqueousphase hydroxyl radical reaction rate constants of organic micropollutants using QSPR approach

Basant

2017

Environ Sci Pollut Res

View full text Add to dashboard Cite

Designing of advanced oxidation process (AOP) requires knowledge of the aqueous phase hydroxyl radical (OH) reactions rate constants (k ), which are strictly dependent upon the pH and temperature of the medium. In this study, pH- and temperature-dependent quantitative structure-property relationship (QSPR) models based on the decision tree boost (DTB) approach were developed for the prediction of k of diverse organic contaminants following the OECD guidelines. Experimental datasets (n = 958) pertaining to the k values of aqueous phase reactions at different pH (n = 470; 1.4 × 10 to 3.8 × 10 M s) and temperature (n = 171; 1.0 × 10 to 2.6 × 10 M s) were considered and molecular descriptors of the compounds were derived. The Sanderson scale electronegativity, topological polar surface area, number of double bonds, and halogen atoms in the molecule, in addition to the pH and temperature, were found to be the relevant predictors. The models were validated and their external predictivity was evaluated in terms of most stringent criteria parameters derived on the test data. High values of the coefficient of determination (R ) and small root mean squared error (RMSE) in respective training (> 0.972, ≤ 0.12) and test (≥ 0.936, ≤ 0.16) sets indicated high generalization and predictivity of the developed QSPR model. Other statistical parameters derived from the training and test data also supported the robustness of the models and their suitability for screening new chemicals within the defined chemical space. The developed QSPR models provide a valuable tool for predicting the OH reaction rate constants of emerging new water contaminants for their susceptibility to AOPs.

show abstract

Advanced Oxidation Processes: An Effective Solution for Treating Emerging Pollutants from Pharmaceutical Industries

Vijaya Kumar

2024

E3S Web Conf.

View full text Add to dashboard Cite

The rapid increase in population poses a grave threat to environmental sustainability and water availability. India's pharma industry holds the 3rd position globally in pharmaceutical production by volume. However, the industry's wastewater contains harmful substances such as high concentrations of organic matter, microbial toxicity, salts, and non-biodegradable compounds, posing a significant danger to human health and the ecosystem. Regularly assessing wastewater discharge against regulatory standards is vital to ensure water safety. The presence of emerging contaminants in natural and drinking water directly jeopardises water quality and the survival of aquatic life. Advanced treatment methods are imperative, as trace amounts of solids and organic matter can persist even after secondary treatment. Treating pharmaceutical wastewater is particularly challenging due to the wide variety of products produced in the industry. The Advanced Oxidation Process is a highly effective technology for removing pollutants from wastewater. It is crucial to implement safe and effective treatment methods to mitigate the impact of pharmaceutical wastewater. This paper critically evaluates AOPs and their ability to treat pharmaceutical wastewater, providing valuable insights into pharmaceutical industry wastewater, the significance and characteristics of pharmaceutical wastewater, their impact on human health and the ecosystem, various treatment methods, and different AOPs employed for treating pharmaceutical wastewater in detail.

show abstract

Review on Emerging Pollutants and Advanced Oxidation Processes.

Cited by 4 publications

References 13 publications

On the performance of electrocatalytic anodes for photoelectro-Fenton treatment of synthetic solutions and real water spiked with the herbicide chloramben

On the performance of electrocatalytic anodes for photoelectro-Fenton treatment of synthetic solutions and real water spiked with the herbicide chloramben

Modeling the pH and temperature dependence of aqueousphase hydroxyl radical reaction rate constants of organic micropollutants using QSPR approach

Advanced Oxidation Processes: An Effective Solution for Treating Emerging Pollutants from Pharmaceutical Industries

Contact Info

Product

Resources

About