Prediction of Fenton oxidation positions in polycyclic aromatic hydrocarbons by Frontier electron density

Lee, Byung-Dae; Iso, Mamoru; Hosomi, Masaaki

doi:10.1016/s0045-6535(00)00061-8

Cited by 124 publications

(38 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The reaction proceeds with complex pathways producing numerous intermediates. However, the final reaction products include a mixture of ketones, quinones, aldehydes, phenols and carboxylic acids for both oxidants (Lee, Iso, & Hosomi, 2001;Rivas, Beltran, & Acedo, 2000;Reisen & Arey, 2002;Koeber, Bayona, & Niessner, 1997). Photochemical degradation of PAHs often involves the same oxidative species that are produced during the pure chemical oxidation of PAHs.…”

Section: Chemical Degradationmentioning

confidence: 99%

Polycyclic Aromatic Hydrocarbons Degradation Techniques: A Review

Ukiwe¹,

Egereonu²,

Njoku³

et al. 2013

IJC

View full text Add to dashboard Cite

The demand for processed petroleum products and agricultural produce has exposed our environment to polycyclic aromatic hydrocarbons (PAHs) contamination. PAHs stick to solid sediments and are ubiquitous including soil, water and air. Their presence in these media creates problems because consuming products obtained from these sources could be deleterious to human health since several of these compounds (benz(a)anthracene, benzo(a)pyrene, chrysene etc) have been implicated in causing tumors in animals and cancer in humans. The present review describes several remediation techniques which are efficient and cost effective in removing PAHs from the environment. Some of these conventional clean-up methods are not only environmental friendly; they also present a novel approach in reducing the ability of PAHs to cause prospective risk to humans and the ecosystem.

show abstract

Section: Chemical Degradationmentioning

confidence: 99%

Polycyclic Aromatic Hydrocarbons Degradation Techniques: A Review

Ukiwe¹,

Egereonu²,

Njoku³

et al. 2013

IJC

View full text Add to dashboard Cite

show abstract

“…Previous experiments on electrochemical oxidation have resulted in almost similar degradation efficiency for all the investigated PAHs [14]. In Fenton oxidation, benzo(a)pyrene is more easily oxidised than fluorene and fluoranthene that contain ring structures with five carbons [44,45]. PAH amenability to persulphate oxidation has not been examined.…”

Section: Pah Removal Efficiencymentioning

confidence: 99%

Integration of electrokinetics and chemical oxidation for the remediation of creosote-contaminated clay

Isosaari

Piskonen

Ojala

et al. 2007

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…According to the Frontier orbital theory, the highest Lee et al [26] reveal that this value of 9, 10 positions are much higher than other positions, so they have obvious characteristics of being an electron donor. On the other hand, ClO 2 has the characteristics of an electron acceptor for its lower SOMO (single electron occupied molecular orbital) energy [24] .…”

Section: Mechanism Of the Anth-clo 2 Reactionmentioning

confidence: 99%

Degradation of anthracene, pyrene and benzo[a]-anthracene in aqueous solution by chlorine dioxide

Liu

Huang

et al. 2006

SCI CHINA SER B

View full text Add to dashboard Cite

Polycyclic aromatic hydrocarbons (PAHs) constitute an important group of micropollutants, which are known to be mutagenic, carcinogenic and/or co-carcinogenic and relatively persistent in the environment. The effects of chlorine dioxide (ClO 2 ) on the degradation of anthracene (ANTH), pyrene (PYR) and benzo[a]anthracene (BaA) in aqueous solution were investigated using high performance liquid chromatography (HPLC). In preliminary experiments, it was observed that ClO 2 could remove these three PAHs effectively within a short time. Several factors including reaction time, the concentration of ClO 2 and pH of the reaction mixture influencing the degradation ratio of PAHs have been studied by batch experiments. The results showed that the degradation ratio of PAHs was affected by reaction time and the concentration of ClO 2 instead of pH. The degradation ratio of ANTH, PYR and BaA could reach their maximum as approximately 99.0%, 67.5% and 89.5%, respectively, under the condition as follows: reaction time 30, 60 and 120 min, the concentration of ClO 2 0.1, 0.4 and 0.5 mmol·L −1 , and pH 7.2. ANTH was selected as the representative to study the reaction mechanism with ClO 2 . The oxidation products formed in the reaction of ANTH with ClO 2 were tentatively identified by gas chromatography-mass spectrometry (GC-MS), and the results showed that the main product was 9, 10-anthraquinone, which could be biodegraded more easily and quickly than ANTH. Through analyzing the reaction properties of ANTH and ClO 2 , the possible pathway for the ANTH-ClO 2 reaction was proposed based on the theory of single electron transfer (SET).

show abstract

Prediction of Fenton oxidation positions in polycyclic aromatic hydrocarbons by Frontier electron density

Cited by 124 publications

References 8 publications

Polycyclic Aromatic Hydrocarbons Degradation Techniques: A Review

Polycyclic Aromatic Hydrocarbons Degradation Techniques: A Review

Integration of electrokinetics and chemical oxidation for the remediation of creosote-contaminated clay

Degradation of anthracene, pyrene and benzo[a]-anthracene in aqueous solution by chlorine dioxide

Contact Info

Product

Resources

About