The Application and Reaction Mechanism of Catalytic Ozonation in Water Treatment

Guo, Yifei; Yang, Li; Cheng, Xiaoliang; Wang, Xiangtao

doi:10.4172/2161-0525.1000150

Cited by 62 publications

(27 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Among these, ozonation and catalytic ozonation are particularly suitable for eco-friendly water treatment than can lead to total mineralization of organic pollutants [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Total mineralization of sulfamethoxazole and aromatic pollutants through Fe2+-montmorillonite catalyzed ozonation

Shahidi

Moheb

Abbas

et al. 2015

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…Among these, ozonation and catalytic ozonation are particularly suitable for eco-friendly water treatment than can lead to total mineralization of organic pollutants [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Total mineralization of sulfamethoxazole and aromatic pollutants through Fe2+-montmorillonite catalyzed ozonation

Shahidi

Moheb

Abbas

et al. 2015

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…Earlier studies have suggested few possible mechanism of 264 hydroxyl radical production by the interaction of ozone with the 265 solid catalysts [11][12][13][14][15] has confirmed that the a-GaOOH did not lose its catalytic activity. showed that in the presence of a-GaOOH the degradation of 2-EEA 298 was substantially increased, but the surface properties have not 299 played a characteristic role on the catalytic activity.…”

mentioning

confidence: 99%

Catalytic activity evaluation of mesoporous α-GaOOH microspheres self-assembly

Muruganandham

Suri

Ahmmad

et al. 2015

Journal of Industrial and Engineering Chemistry

View full text Add to dashboard Cite

“…OH radicals near the surface of the catalyst as described by Eq. 4, 5

true O_{3} + H_{2} normalO \to O_{2} + 2^{•} O H

true {[P b O]}_{a} O H + O_{3} \to {[P b O]}_{a} {O H}^{O - O - O} \to {{[P b O]}_{a} O H}^{O}^{•} + O_{2}

true {{[P b O]}_{a} O H}^{O}^{•} + 2 H_{2} O + O_{3} \to {[P b O]}_{a} O H + 4^{•} O H + O_{2}

…”

Section: Resultsmentioning

confidence: 76%

“…The presence of 0.5 g/L [PbO] a increased the rate constant of the reaction to 1.38×10 −2 , 1.40×10 −2 and 1.77×10 −2 s −1 at pHs 4.0, 7.5 and 10.5, respectively. The evident increase in the catalytic decolouration of RR‐120 at higher pHs are attributed to (1) accelerated homogeneous decomposition of O 3 in alkaline solution, (2) heterogeneous decomposition of O 3 at the surface of

{([], P, b, O)}_{a} O H

about pH near to zero charge (pH PZC ) and (3) higher accessibility of O 3 to free catalyst surface sites due to lesser extent of dye adsorption . In this context, it should be mentioned that only 16%, 13% and 7% of RR‐120 were found, from an independent experiment, to be adsorbed at equilibrium on the surface of [PbO] a at pH 4.0, 7.5 and 10.5, respectively, at room temperature.…”

Section: Resultsmentioning

confidence: 98%

“…A few metal oxides have been used for adsorption followed by catalytic ozonation of pollutants . However, it was evident that complete coverage of the catalyst surface by adsorption of the pollutants leads to the decrease in the efficiency of catalytic ozonation . Therefore, in this manuscript we aimed to prepare a metal oxide of same chemical composition but different crystal properties for complementary adsorption and catalytic ozonation of highest possible efficiency of individual process.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Complementary Bifunctional Unique Properties of (α,β)‐PbO Nanoparticles for Efficient Catalysis and Adsorption for Water Remediation

et al. 2019

View full text Add to dashboard Cite

Lead oxides (PbO) of same chemical composition, but different crystallographic properties have been developed for complementary catalytic ozonation (designated by [PbO]a) and adsorption (designated by [PbO]b) of a model dye, reactive red–120 (RR‐120) with highest possible efficiency beyond the state‐of‐the‐art of individual processes. The highest extent of decolouration (∼99% after 4 min) with kappRR-120 1.77×10−2 s−1 and mineralization (50% after 15 min) of RR‐120 at pH 10.5 was achieved by ozonation using 0.5 g/L catalyst [PbO]a consisting major fraction of α‐PbO phase (α‐PbO: β‐PbO∼4:1) in its crystal structure. Minimum adsorption of RR‐120 (∼7%) on catalyst's surface [PbO]a led to higher accessibility of O3 to free catalyst surface sites and helped to achieve highest efficiency of catalytic ozonation. On the other hand, adsorbent [PbO]b mainly consisting of β‐PbO phase (α‐PbO: β‐PbO∼1:4) with a fractional coexistence of α‐PbO phase showed excellent adsorption of RR‐120 (571 mg/g at 320 K) at pH 7.5, but it showed inferior efficiency in catalytic ozonation. Both the materials were found to be reusable and environmentally acceptable.

show abstract

The Application and Reaction Mechanism of Catalytic Ozonation in Water Treatment

Cited by 62 publications

References 48 publications

Total mineralization of sulfamethoxazole and aromatic pollutants through Fe2+-montmorillonite catalyzed ozonation

Total mineralization of sulfamethoxazole and aromatic pollutants through Fe2+-montmorillonite catalyzed ozonation

Catalytic activity evaluation of mesoporous α-GaOOH microspheres self-assembly

Complementary Bifunctional Unique Properties of (α,β)‐PbO Nanoparticles for Efficient Catalysis and Adsorption for Water Remediation

Contact Info

Product

Resources

About