Hybridization of TiO2 photocatalysis with coagulation and flocculation for 1,4-dioxane removal in drinking water treatment

Lee, Gichang; Choo, Kwang‐Ho

doi:10.1016/j.cej.2013.07.023

Cited by 37 publications

(6 citation statements)

References 51 publications

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“…13 Nevertheless, photocatalytic effect is refrained due to its inherent defects such as a single-response only to UV light and low separation efficiency of photogenerated electron–hole pairs. 14 There are effective technical strategies including defect engineering, surface and interface engineering and heterojunction for improving photocatalysis efficiency. 15–17 Heterojunction, one of the best ways to improve photocatalytic activity, can reduce electron–hole recombination and improve light absorption range through the combination of two different semiconductors with matched energy band structures.…”

Section: Introductionmentioning

confidence: 99%

Enhanced photocatalytic activity of TiO₂/UiO-67 under visible-light for aflatoxin B1 degradation

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Enhanced photocatalytic activity of TiO₂/UiO-67 under visible-light for aflatoxin B1 degradation

et al. 2022

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“…High turbidity of PE (Table ) was additionally increased by the presence of TiO 2 and the amount of UV irradiation reaching the photocatalyst surface decreased . Lee et al found that the degradation rate of 1,4‐dioxane strongly decreased above the turbidity of 115 nephelometric turbidity units (NTU). Ho et al also found the hindering effect of the high turbidity on DOC removal from biologically treated sewage effluents during a photocatalysis–microfiltration hybrid process.…”

Section: Resultsmentioning

confidence: 99%

Removal of non‐steroidal anti‐inflammatory drugs from primary and secondary effluents in a photocatalytic membrane reactor

Darowna

Grondzewska

Morawski

et al. 2014

J of Chemical Tech & Biotech

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BACKGROUND: The pollution of the aquatic environment by pharmaceuticals has become a serious problem. Conventional technologies applied in water or sewage treatment plants are not effective in drugs removal, therefore there is an urgent need to develop new methods. RESULTS:The removal of diclofenac (DCF), ibuprofen (IBU) and naproxen (NAP) sodium salts in a photocatalytic membrane reactor (PMR) utilizing direct contact membrane distillation and UV-C radiation from ultrapure water, tap water, primary effluents (PE) and secondary effluents (SE) of municipal wastewater treatment plant is presented. When PE were used as feed and TiO 2 loading of 0.5 g dm −3 was applied, DCF was removed completely, IBU amount decreased for 73% and NAP for 90%. In the case of SE, DCF, IBU and NAP concentrations decreased by 100%, 93% and 94%, respectively (1.5 gTiO 2 dm −3 ). Mineralization was low and did not exceed 14% for PE and 23% for SE. No drugs were found in the distillate, however, it contained high level of N-NH 4 + , especially in PE.CONCLUSION: The hybrid system can be an effective technology for the removal of pharmaceuticals from SE and PE, however, owing to membrane fouling the latter should be pretreated before application in the PMR.

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“…It was also discovered that adding a photocatalyst of titanium dioxide (TiO 2 ) to a coagulationflocculation process increased the industrial chemical (1,4-dioxane) removal rate by twofold in an hour. Moreover, at a UV dose of 0.35 WL −1 , a continuous flow reactor with a residence time of 39 min removed more than 60% of the 1,4-dioxane [211]. Pesticides, over time, may pose a risk to human health via water and the atmosphere.…”

Section: Combine Treatment Processesmentioning

confidence: 99%

A Review on Emerging Pollutants in the Water Environment: Existences, Health Effects and Treatment Processes

Arman

Salmiati

Aris

et al. 2021

Water

102

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Emerging pollutants (EPs), also known as micropollutants, have been a major issue for the global population in recent years as a result of the potential threats they bring to the environment and human health. Pharmaceuticals and personal care products (PPCPs), antibiotics, and hormones that are used in great demand for health and cosmetic purposes have rapidly culminated in the emergence of environmental pollutants. EPs impact the environment in a variety of ways. EPs originate from animal or human sources, either directly discharged into waterbodies or slowly leached via soils. As a result, water quality will deteriorate, drinking water sources will be contaminated, and health issues will arise. Since drinking water treatment plants rely on water resources, the prevalence of this contamination in aquatic environments, particularly surface water, is a severe problem. The review looks into several related issues on EPs in water environment, including methods in removing EPs. Despite its benefits and downsides, the EPs treatment processes comprise several approaches such as physico-chemical, biological, and advanced oxidation processes. Nonetheless, one of the membrane-based filtration methods, ultrafiltration, is considered as one of the technologies that promises the best micropollutant removal in water. With interesting properties including a moderate operating manner and great selectivity, this treatment approach is more popular than conventional ones. This study presents a comprehensive summary of EP’s existence in the environment, its toxicological consequences on health, and potential removal and treatment strategies.

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Hybridization of TiO2 photocatalysis with coagulation and flocculation for 1,4-dioxane removal in drinking water treatment

Cited by 37 publications

References 51 publications

Enhanced photocatalytic activity of TiO₂/UiO-67 under visible-light for aflatoxin B1 degradation

Enhanced photocatalytic activity of TiO₂/UiO-67 under visible-light for aflatoxin B1 degradation

Removal of non‐steroidal anti‐inflammatory drugs from primary and secondary effluents in a photocatalytic membrane reactor

A Review on Emerging Pollutants in the Water Environment: Existences, Health Effects and Treatment Processes

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Hybridization of TiO2 photocatalysis with coagulation and flocculation for 1,4-dioxane removal in drinking water treatment

Cited by 37 publications

References 51 publications

Enhanced photocatalytic activity of TiO2/UiO-67 under visible-light for aflatoxin B1 degradation

Enhanced photocatalytic activity of TiO2/UiO-67 under visible-light for aflatoxin B1 degradation

Removal of non‐steroidal anti‐inflammatory drugs from primary and secondary effluents in a photocatalytic membrane reactor

A Review on Emerging Pollutants in the Water Environment: Existences, Health Effects and Treatment Processes

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Enhanced photocatalytic activity of TiO₂/UiO-67 under visible-light for aflatoxin B1 degradation

Enhanced photocatalytic activity of TiO₂/UiO-67 under visible-light for aflatoxin B1 degradation