Removal of pharmaceutical and personal care products from wastewater using advanced materials

Morone, Amruta; Mulay, Prajakatta; Kamble, Sanjay P.

doi:10.1016/b978-0-12-816189-0.00008-1

Cited by 21 publications

(10 citation statements)

References 149 publications

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“…Higher pH values (pH >3) were not tested due to the precipitation of Fe 3+ species. 53 Increasing the pH enhanced the I ph and the FEs for O 2 evolution from ∼55% at pH 1 and 2 to ∼80% at pH 3 (Figure 2). In contrast, the same PEC reaction in the absence of Fe 3+ was not influenced by pH and the FEs for O 2 evolution were similar at between 27% and 35%.…”

Section: Fementioning

confidence: 91%

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High-Valent Iron Redox-Mediated Photoelectrochemical Water Oxidation

et al. 2021

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Fe 3+ is widely used as a conduction band electron acceptor in the photocatalytic and photoelectrochemical (PEC) oxidation of water and various substrates. However, a question of the possible involvement of Fe 3+ as a valence band hole acceptor has been raised. Herein, we demonstrate that the PEC water oxidation using oxide semiconductor (WO 3 , TiO 2 , and BiVO 4 ; primarily WO 3 ) films can proceed via the formation of high-valent iron species in the presence of aqueous Fe 3+ ions at pH 1−3. The presence of Fe 3+ (1−100 mM) enhances the photocurrent generation, O 2 evolution, and the Faradaic efficiency (FE) of ∼90% with a biased WO 3 electrode (1.23−1.88 V RHE ), whereas the formation of Fe 2+ is significantly inhibited. An in situ transient absorption spectroscopic analysis reveals the formation of high-valent iron species. The selective oxidation of dimethyl sulfoxide to dimethyl sulfone using in situ high-valent iron species is achieved with an FE of ∼98% in the PEC reaction with Fe 3+ . The proposed reaction mechanism should call for attention to the conventional role of Fe 3+ in the PEC reaction.

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Section: Fementioning

confidence: 91%

“…The high-valent iron species were found to be more active at high pH in the pH range of 1–3 (Figure S15). Higher pH values (pH >3) were not tested due to the precipitation of Fe 3+ species . Increasing the pH enhanced the I ph and the FEs for O 2 evolution from ∼55% at pH 1 and 2 to ∼80% at pH 3 (Figure ).…”

mentioning

confidence: 99%

High-Valent Iron Redox-Mediated Photoelectrochemical Water Oxidation

et al. 2021

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“…Regarding the adsorption process for PPCP removal from real wastewater, the most suitable condition is obtained using the powdered form of activated carbon (PAC) in concentration ranging from 5 to 50 mg L −1. 92,241 …”

Section: Elimination Of Ppcps In Conventional Water and Wastewater Tp...mentioning

confidence: 99%

Pharmaceuticals and personal care products (PPCPs): Environmental and public health risks

Ziylan-Yavaş

Santos

Flores

et al. 2022

Env Prog and Sustain Energy

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Pharmaceuticals and personal care products (PPCPs) are those substances used for medical care, cosmetics, hygiene and health care purposes. Due to their globally high production and consumption rates and rapid discharge into the environment without control, they are of considerable public concern. Many of them, particularly antibiotics, analgesics, endocrine disruptors and microbial/disinfecting substances are frequently detected in wastewater treatment effluents, fresh water systems and groundwater in concentrations ranging from ng L−1 to mg L−1. Moreover, most of them are persistent and tend to bioaccumulate in cell tissue, being transported subsequently to vegetables, crops and drinking water sources. As such, a large group of PPCPs are recognized with their potential to impair the ecosystem and/or to induce health risks, so that they have been classified under “emerging contaminants.” The present study is a comprehensive review of the literature on the occurrence, fate and potential environmental and health risks of PPCPs in the aquatic and terrestrial environments. It also encompasses the reported cases of human health disorders or risks, although the data so far is inadequate for presenting a complete assessment. Finally, the study covers a short review of the most promising advanced technologies for their partial or ultimate elimination from wastewater treatment effluents and water.

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“…The Fenton reaction (Equation (1)) uses a combination of hydrogen peroxide and a ferrous or ferric salt that reacts with cellulose and lignin [ 96 ]. For the degradation of organic substrates, this method either depolymerizes or polymerizes the cellulose and lignin of fibers under acidic conditions (pH > 4) [ 97 , 98 ] whereby the reaction occurs between hydrogen on organic material and the hydroxyl radical (Equation (2)). Hydroxyl radicals can damage organic molecules (RH) such as lignin and cellulose, releasing water and carbon dioxide as a result (Equation (3)).…”

Section: Pre-treatments and Surface Modification Of Kapok Fibersmentioning

confidence: 99%

Modification Strategies of Kapok Fiber Composites and Its Application in the Adsorption of Heavy Metal Ions and Dyes from Aqueous Solutions: A Systematic Review

Futalan

Choi

Soriano

et al. 2022

IJERPH

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Kapok fiber (Ceiba pentandra) belongs to a group of natural fibers that are mainly composed of cellulose, lignin, pectin, and small traces of inorganic compounds. These fibers are lightweight with hollow tubular structure that is easy to process and abundant in nature. Currently, kapok fibers are used in industry as filling material for beddings, upholstery, soft toys, and nonwoven materials. However, kapok fiber has also a potential application in the adsorptive removal of heavy metal ions and dyes from aqueous systems. This study aims to provide a comprehensive review about the recent developments on kapok fiber composites including its chemical properties, wettability, and surface morphology. Effective and innovative kapok fiber composites are analyzed with the help of characterization tools such as scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, and Brunauer-Emmett-Teller analysis. Different pre-treatment methods such as alkali and acid pre-treatment, oxidation pre-treatment, and Fenton reaction are discussed. These techniques are applied to enhance the hydrophilicity and to generate rougher fiber surfaces. Moreover, surface modification and synthesis of kapok fiber-based composites and its environmental applications are examined. There are various methods in the fabrication of kapok fiber composites that include chemical modification and polymerization. These procedures allow the kapok fiber composites to have higher adsorption capacities for selective heavy metal and dye removal.

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Removal of pharmaceutical and personal care products from wastewater using advanced materials

Cited by 21 publications

References 149 publications

High-Valent Iron Redox-Mediated Photoelectrochemical Water Oxidation

High-Valent Iron Redox-Mediated Photoelectrochemical Water Oxidation

Pharmaceuticals and personal care products (PPCPs): Environmental and public health risks

Modification Strategies of Kapok Fiber Composites and Its Application in the Adsorption of Heavy Metal Ions and Dyes from Aqueous Solutions: A Systematic Review

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