Kinetics and mechanism of degradation of p-chloronitrobenzene in water by ozonation

Shen, Jimin; Chen, Zhonglin; Xu, Zhenbo; Li, Xueyan; Xu, Bin; Qi, Fei

doi:10.1016/j.jhazmat.2007.08.009

Cited by 117 publications

(55 citation statements)

References 23 publications

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“…In this study, the dissolved ozone in suspension may be consumed through three pathways: direct reaction of ozone molecules with p-CNB; decomposition of ozone molecules to active species; and absorption of ozone molecules on the catalyst surface. The rate constants of p-CNB with • OH and ozone are 2.6 × 10 9 M −1 s −1 and 1.6 M −1 s −1 , respectively, suggesting that p-CNB barely reacts with ozone molecule [36]. Therefore, based on the results shown in Fig.…”

Section: Ozone Utilization Efficiencymentioning

confidence: 85%

Role of Fe/pumice composition and structure in promoting ozonation reactions

Yuan

Shen

Chen

et al. 2016

Applied Catalysis B: Environmental

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Section: Ozone Utilization Efficiencymentioning

confidence: 85%

Role of Fe/pumice composition and structure in promoting ozonation reactions

Yuan

Shen

Chen

et al. 2016

Applied Catalysis B: Environmental

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“…1. Shen et al [28] used a similar method for degradation of p-chloronitrobenzene in water by ozonation.…”

Section: Oxidation Procedures 221 Ozone (O 3 )mentioning

confidence: 99%

Degradation of Malathion and Parathion by Ozonation, Photolytic Ozonation, and Heterogeneous Catalytic Ozonation Processes

Bedük

Aydın

Özcan

2011

CLEAN Soil Air Water

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The oxidation of organophosphorus pesticides (OPPs), such as malathion and parathion, in aqueous solution was studied using conventional ozonation (O 3 ), photolytic ozonation (O 3 /UV, O 3 /UV/H 2 O 2 ), and heterogeneous catalytic ozonation (O 3 /TiO 2 /UV) processes. Experiments were performed in batch mode at laboratory scale and processes were compared in terms of disappearance kinetics. The best results of pesticide mineralization were obtained when TiO 2 particles in combination with ozone (O 3 ) and UV photolysis (l ¼ 254 nm) were applied. Decomposition of 99% of parent compounds were achieved in 10 min and oxon derivatives were completely removed in 30 min. The initial reaction rate increases linearly with increasing catalyst amount. Toxicity measurements of the treated solutions were carried out in order to evaluate the efficiency of the treatment methods. No detoxification was achieved for O 3 and O 3 /UV applications. Heterogeneous photocatalytic ozonation was shown to be feasible for achieving complete decomposition of OPPs and their oxon intermediates.

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“…Moreover, as an iron source, goethite does not increase the solids in solution. p-chloronitrobenzene (pCNB) was selected as a target contaminant to test the performance of this new Fenton-like treatment system because pCNB is a typical halogenated nitryl aromatic hydrocarbon widely used in the production of pesticides, herbicides, dyes, lumber preservatives, pharmaceuticals, photographic film, antioxidants, gasoline additives, corrosion inhibitors and other industrial chemicals [24,25]. pCNB is a major cause of methemoglobinaemia and anaemia and also exhibits genotoxicity and carcinogenic potential [26].…”

Section: Introductionmentioning

confidence: 99%