Oxidative degradation of aqueous phenol effluent with electrogenerated Fenton's reagent.

Sudoh, Masao; Kodera, Takamasa; Sakai, Katsuhiro; Zhang, Jing Quan; Koide, Kozo

doi:10.1252/jcej.19.513

Cited by 108 publications

(53 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 5.10 shows this pH effect on hydrogen peroxide generation. These experimental results relating the influence of solution pH on the hydrogen peroxide generation agree with Sudoh's research (Sudoh et al, 1986). Sudoh has reported that the most favorable pH for hydrogen peroxide generation is 3.0, followed by 1.0, 2.0, and 4.0 as the least beneficial value.…”

Section: V22 Effect Of Solution Phsupporting

confidence: 91%

“…Figure 5.9 shows the generation of hydrogen peroxide over time for different pH values. It can be seen that pH 3.0 is the most favorable value for the generation of hydrogen peroxide, as it was reported in different studies (Sudoh et al, 1986;Chu, 1995). Almost 160 ppm hydrogen peroxide can be accumulated in a solution pH 3.0 after three hours.…”

Section: V22 Effect Of Solution Phsupporting

confidence: 76%

“…Figure 5.17 shows that the current efficiency for the formation of hydrogen peroxide is 81% after the first 5 minutes, but decreases rapidly as hydrogen peroxide accumulates in the acidic solution. Sudoh (Sudoh et al, 1986) obtained a maximum current efficiency for the hydrogen peroxide formation of 85% in a solution pH 3.0. …”

Section: V24 Effect Of Solution Temperaturementioning

confidence: 99%

See 2 more Smart Citations

Electrochemical processes for in-situ treatment of contaminated soils. Annual progress report, September 1996--May 1997

Huang¹,

Cha²,

Chang³

et al. 1997

View full text Add to dashboard Cite

Section: V22 Effect Of Solution Phsupporting

confidence: 91%

Section: V22 Effect Of Solution Phsupporting

confidence: 76%

Section: V24 Effect Of Solution Temperaturementioning

confidence: 99%

See 1 more Smart Citation

Electrochemical processes for in-situ treatment of contaminated soils. Annual progress report, September 1996--May 1997

Huang¹,

Cha²,

Chang³

et al. 1997

View full text Add to dashboard Cite

“…Accordingly, the partition coefficient of PCE (log K ow =2.88) is greater than that of TCE (log K ow =2. 42). Figure 3.7 shows sorption isotherms of carbon tetrachloride.…”

Section: Figure 33 Andmentioning

confidence: 99%

Electrochemical Processes for In-Situ Treatment of Contaminated Soils - Final Report - 09/15/1996 - 01/31/2001

Huang¹

2001

View full text Add to dashboard Cite

Contamination of soils by toxic organic pollutants is an environmental concern. The insitu electrokinetic (EK) technology is an emerging process to remediate the contaminated soils. Since the electro-osmotic (EO) flow rate and sorption behaviors of pollutants are two critical factors of the process, this study focuses on understanding the partition of nonionic organic contaminants in soil-water system, mechanisms of the EO flow, and the transport of organic compounds under an externally applied electrostatic field. The target compounds include chlorinated organic compounds and polycyclic aromatic hydrocarbons (PAHs). In order to improve the treatment efficiency, surfactant and bio-surfactant were used. A thermodynamic concept, fugacity, was introduced to illustrate the interactions between organics and the soil. A semi-empirical equation was derived to describe the EO flow rate in unsaturated soils. Moverover, the diffusion-advection-sorption model was used to simulate the transport of nonionic organic contaminants in the presence of an electrostatic field.The sorption experiments were conducted with various initial solute concentrations and different soil to solution ratios. The selected chlorinated organics include tetrachloroethylene (PCE), trichloroethylene (TCE), carbon tetrachloride, and chloroform. Results show that Langnuir isotherm can be used to express the distribution behavior of these chlorinated organic compounds i n the soil-water system. In addition to the hydrophobicity (K ow ), the concentration of organic compound and soil to solution ratio can influence the distribution behavior also. In order to illustrate the effects of the organic concentration and soil to solution ratio, the activity coefficient was used.The activity coefficient, γ, a relative interaction based on chosen reference state, is a useful means to express the quantitative feature of the organic-soil interaction without detailed information of their interaction mechanisms. By comparing the activity coefficients, γ w and γ s (i.e., X s /X w ), one can illustrate the trend of organic distribution at the soil-water interfaces.The concentration effect can be explained by the changes in the adsorption of organic onto the soil surface. Based on the experimental results, when increasing the organic compound concentrations, the activity coefficient, γ w , can be considered as a constant and γ s increases due to the increase of interaction energy. The change of γ s makes the sorption isotherms of PCE, TCE, carbon tetrachloride, and chloroform non-linear. According to γ s , it can be seen that the sorption between these selceted chlorinated organics and the soil is exothermic.The effect of soil to solution ratio can be attributed to the presence of dissolved organic matter (DOM) in the liquid phase. DOM enhances the organic dissolution, which in turns increases the organic concentration, i.e., X w . Therefore, the partition coefficients of these chlorinated compounds, i.e., X s /X w , decrease with increasing the soil to solution ...

show abstract

“…Fenton's reagent has been extensively used in order to eliminate organic compounds from wastewater; phenol [7], chlorophenols [8,9], chlorobenzene [10], atrazine [11], etc.…”

Section: Introductionmentioning

confidence: 99%

Kinetic study of the oxidation of indigocarmine by hydrogen peroxide with ferrous and ferric ions in acid medium

Camarero¹,

Peche²,

Collado³

1997

Int. J. Chem. Kinet.

View full text Add to dashboard Cite

The use of hydrogen peroxide in addition to ferrous and ferric salts has been shown an effective method in the decoloration of indigocarmine (IDS), Indigo-5,5Ј-disulfonic acid disodium salt.The kinetic experiments control have been carried out by means of a conventional spectrophotometric technique. In acid medium and the initial absence of Fe ϩ2 , the decoloration process obeys the following rate law:Effects of reagents concentrations, temperature, and acidity on the rate experimental constant have been discussed. A feasible reaction mechanism is finally proposed. The rate equation deducted from the mechanism is according to the achieved experimental results.

show abstract

Oxidative degradation of aqueous phenol effluent with electrogenerated Fenton's reagent.

Cited by 108 publications

References 1 publication

Electrochemical processes for in-situ treatment of contaminated soils. Annual progress report, September 1996--May 1997

Electrochemical processes for in-situ treatment of contaminated soils. Annual progress report, September 1996--May 1997

Electrochemical Processes for In-Situ Treatment of Contaminated Soils - Final Report - 09/15/1996 - 01/31/2001

Kinetic study of the oxidation of indigocarmine by hydrogen peroxide with ferrous and ferric ions in acid medium

Contact Info

Product

Resources

About