In situ oxidation remediation technologies: Kinetic of hydrogen peroxide decomposition on soil organic matter

Salvador, Alfredo; Santos, Aurora; Vicente, Fernando; Rodríguez, Sergio; Lafuente, Alfredo Liñán

doi:10.1016/j.jhazmat.2009.05.041

Cited by 58 publications

(20 citation statements)

References 23 publications

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“…This weak weight increase could be attributed to the oxygen introduced by the oxidation of the original SOM. The SOM is then oxidized but not mineralized, in agreement with the results of Romero et al [14] and with the oxygen produced (shown in Fig. 3).…”

Section: Som Toc and C Fractions Pools Content Analysissupporting

confidence: 91%

“…1, indicating that the presence of the contaminant did not modify the decomposition rate of H 2 O 2 . The results show that higher H 2 O 2 conversions are obtained in the soil with higher SOM content, and that H 2 O 2 is decomposed more slowly in S2, as it was reported in a previous work [14].…”

Section: H 2 O 2 Decomposition By Soilsupporting

confidence: 85%

“…Soil organic matter (SOM) has been found to consume and compete for the oxidant during Fenton oxidation reaction [14]. Therefore, a high oxidant demand in the remediation process can be due to non-productive catalyzed decomposition of H 2 O 2 to O 2 and H 2 O.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Soil remediation by Fenton-like process: Phenol removal and soil organic matter modification

Salvador

Santos

Cordero

et al. 2011

Chemical Engineering Journal

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Section: Som Toc and C Fractions Pools Content Analysissupporting

confidence: 91%

Section: H 2 O 2 Decomposition By Soilsupporting

confidence: 85%

See 1 more Smart Citation

Soil remediation by Fenton-like process: Phenol removal and soil organic matter modification

Salvador

Santos

Cordero

et al. 2011

Chemical Engineering Journal

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“…The reduction of the oxidation state of arsenic As(V) to As (III) in organoarsenic compounds at acidic environment under the influence of radiation and the presence of oxidants confirms the papers Bednar et al 2003;Xu et al 2007). Effect of pH on hydrogen peroxide decomposition mechanism was also confirmed by Romero et al (2009). Different mechanisms of PPA oxidation with pH dependence also indicate the formation of a solid phase containing mainly As.…”

Section: Kinetics Of the Processesmentioning

confidence: 64%

Study of photodegradation and photooxidation of p-arsanilic acid in water solutions at pH = 7: kinetics and by-products

Czaplicka

Jaworek

Bąk

2015

Environ Sci Pollut Res

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The paper presents the kinetics and proposed pathways photodegradation and photooxidation of p-arsanilic acid, in a neutral environment by ozone and hydrogen peroxide. The results showed that in a neutral environment, photoozonation process was characterized by the highest decomposition rate constant (k) (k = 31.8 × 10(-3) min(-1)). The rate constants decreased in the order UV/O3 > O3 > UV/H2O2 > H2O2 > UV. It was also found that under pH = 7, decomposition of p-arsanilic acid leads mainly to the formation of aniline, which undergoes secondary reactions. Intermediate products of oxidation and photooxidation by hydrogen peroxide like nitrobenzene, nitrophenol, azobenzenes, and phenylazophenol were identified depending on processes. However, in the photodegradation process, formation of nitrasone as a reaction product of p-arsanilic acid with oxygen in the singlet state was observed. In the case of ozonation and photoozonation, in addition, aniline formation of carboxylic acids was observed.

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“…It is present naturally in soil, promoting the conversion of contaminants in non-toxic forms and CO 2 , which can also promote the complete mineralization (Romero et al 2009;Lindsey and Tarr 2000;Kong et al 1998). The hydrogen peroxide is an oxidant widely used in environmental applications and, they are very strong non-selective oxidizing agents (standard oxidation potential about 2.8 V).…”

Section: Resultsmentioning

confidence: 99%

Degradation of BTX in Contaminated Soil by Using Hydrogen Peroxide (H2O2) and Potassium Permanganate (KMnO4)

Rinaldi

Silva

2010

Water Air Soil Pollut

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This work aims to evaluate the efficiency of the degradation of BTX in soil contaminated with oil effluent by chemical oxidation using hydrogen peroxide and potassium permanganate. The initial concentration of BTX in soil was: benzene, 41.4 μg kg −1 ; toluene, 30.9 μg kg −1 ; xylene, 1,522.7 μg kg −1 and in water was: benzene, 18.6 μg mL −1 ; toluene, 18.0 μg mL −1 ; xylene, 565.8 μg mL −1 . The results showed an elevated efficiency in the degradation of BTX by using these compounds, removing 95.2%, 93.5%, and 95.5% of benzene, toluene, and xylene, respectively, with a solution of hydrogen peroxide and 89.3%, and 94.4% of toluene and xylene, respectively, with a solution of potassium permanganate at 4.5%. Benzene was not degraded in potassium permanganate solution.

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In situ oxidation remediation technologies: Kinetic of hydrogen peroxide decomposition on soil organic matter

Cited by 58 publications

References 23 publications

Soil remediation by Fenton-like process: Phenol removal and soil organic matter modification

Soil remediation by Fenton-like process: Phenol removal and soil organic matter modification

Study of photodegradation and photooxidation of p-arsanilic acid in water solutions at pH = 7: kinetics and by-products

Degradation of BTX in Contaminated Soil by Using Hydrogen Peroxide (H2O2) and Potassium Permanganate (KMnO4)

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