Evaluation of the UV/H2O2 system for treating natural water with a mixture of anthracene and benzo[a]pyrene at ultra-trace levels

Abstract

The presence of polycyclic aromatic hydrocarbons, such as anthracene (AN) and benzo[a]pyrene (BaP), in water has become a problem of great concern due to the detrimental health effects caused to humans and living beings. In this work, the efficiency of the UV/HO system for degrading the target compounds at ultra-trace levels in surface water has been evaluated. For this purpose, a previous optimization step using a face-centered central composite experimental design has been conducted, considering the effect of the UV-C irradiance and the initial concentration of HO. It was evidenced that under optimal operating conditions (11 mg L HO and 0.63 mW cm irradiance), AN and BaP removal percentages were higher than 99.8%. Additionally, 69.3% of the organic matter, in terms of total organic carbon, was mineralized without the production of transformation by-products more harmful than the parent compounds. These findings demonstrate the oxidation capacity of the examined system in a natural matrix for degrading micropollutants that cannot be converted through conventional treatment processes. Consequently, new horizons are opened for the effective use of the UV/HO system for drinking water production, providing the accomplishment of other regulated parameters related to water quality.

Degradation of curcumin‐mediated photodynamic technology (PDT) on polycyclic aromatic hydrocarbons in oysters and toxicity evaluation of PDT‐treated oysters

“…Physical and biological methods are costly, low‐efficient and prone to secondary pollution (Gitipour et al ., 2018). Photocatalytic oxidation, as an important way to convert PAHs in the environment, has a good decomposition effect on PAHs (Woo et al ., 2009; Rubio‐Clemente et al ., 2019). However, due to safety and technical limitations, photolysis is still difficult to be applied to the food field.…”

Endüstriyel Topraklardaki PAH Kirliliğinin UVC Uygulamalarıyla Gideriminde Katkı Maddesi Kullanımının Etkileri

“…UV/H2O2 prosesinin, çeşitli alifatik ve aromatik bileşikler içeren suların arıtılmasında etkili olduğu kanıtlanmıştır [23]. Literatürde, UV/H2O2 prosesinin atıksulardan ve yüzeysel sulardan PAH gideriminde kullanılabilirliğini ortaya koyan çalışmaların yanında [24][25][26][27], katı matrikslerden UV/H2O2 prosesi ile PAH gideriminin gerçekleştirildiği çalışmalarda mevcuttur [28,29] UV'ye dayalı ileri oksidasyon prosesleri topraklardan PAH gideriminde önem taşıyan proseslerdir ve bu çalışmadan elde edilen veriler, bu konunun geliştirilmesine katkı sağlayacaktır. UV'ye dayalı ileri oksidasyon proseslerinde, giderim verimi, kirletici tür ve konsantrasyonu, toprak organik maddesinin özellikleri ve içeriği, toprakta doğal olarak bulunan mineraller, oksidan konsantrasyonu, pH, radikal sönümleyiciler gibi pekçok faktörün etkisi altındadır.…”

Anthracene removal from water samples using a composite based on metal-organic-frameworks (MIL-101) and magnetic nanoparticles (Fe3O4)

“…Anthracene is a very toxic and carcinogenic substance easily found in water [4,5] leading to also finding it in vegetables [6,7]. The concentration of anthracene in water samples is very low but it is still very toxic at those amounts [8,9].…”