Degradation of phenolic wastewater by ozonation and Fe-based catalytic ozonation in multi injection bubble column reactor

Ghaisani, Sarah V.; Wahyudi, Dionisius P.; Wulansarie, Ria; Bismo, Setijo

doi:10.1063/5.0014515

Cited by 2 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The use of the ZnO nanocatalyst provided a high surface area and thus increased the reaction rate within a short reaction time. The increase in the conversion of phenol during the catalyst's ozonation process was mostly due to the effect of the free radicals produced by the self-decomposition of ozone on the active site of the ZnO nanocatalyst [31,42].…”

Section: Phenol Degradation Using Ozone Gas and A Zno Nanocatalystmentioning

confidence: 99%

See 1 more Smart Citation

Combining α-Al2O3 Packing Material and a ZnO Nanocatalyst in an Ozonized Bubble Column Reactor to Increase the Phenol Degradation from Wastewater

Majhool,

Sukkar,

Alsaffar

2023

Processes

View full text Add to dashboard Cite

The ozonation reaction in a bubble column reactor (BCR) has been widely used in the removal of phenol from wastewater, but the phenol removal efficiency in this type of reactor is limited because of low ozone solubility and reactivity in the system. In the present study, the phenol degradation in the BCR was enhanced by using α-Al2O3 as a packing material and a ZnO nanocatalyst. The reactor diameter and height were 8 cm and 180 cm, respectively. The gas distributor was designed to include 52 holes of a 0.5 mm diameter. Also, the gas holdup, pressure drop, and bubble size were measured as a function of the superficial gas velocity (i.e., 0.5, 1, 1.5, 2, 2.5, and 3 cm/s). The evaluation of the hydrodynamic parameters provided a deeper understanding of the ozonation process through which to select the optimal operating parameters in the reactor. It was found that the best superficial gas velocity was 2.5 cm/s. A complete (100%) phenol removal was achieved for phenol concentrations of 15, 20, and 25 ppm at reaction times of 80, 90, and 100 min, respectively; this was achieved by using α-Al2O3 packing material and a ZnO nanocatalyst in the BCR. Additionally, a reaction kinetics study was conducted to describe the ozonation reaction in BCR. The first-order reaction assumption clearly describes the reaction kinetics with an R2 = 0.991. Finally, the applied treatment method can be used to efficiently remove phenol from wastewater at a low cost, with a small consumption of energy and a simple operation.

show abstract

Section: Phenol Degradation Using Ozone Gas and A Zno Nanocatalystmentioning

confidence: 99%

“…Ghaisani et al [42] applied a semicontinuous, multi-injection BCR in the degradation of phenolic compounds when in the presence of ozone gas. They achieved the highest removal efficiency of 99.48 and 99.83% via ozonation and catalytic ozonation methods, respectively, which were conducted at an operating time of 60 min.…”

Section: Introductionmentioning

confidence: 99%

Combining α-Al2O3 Packing Material and a ZnO Nanocatalyst in an Ozonized Bubble Column Reactor to Increase the Phenol Degradation from Wastewater

Majhool,

Sukkar,

Alsaffar

2023

Processes

View full text Add to dashboard Cite

show abstract

Combining α-Al<sub>2</sub>O<sub>3</sub> Packing Material and ZnO Nanocatalyst in an Ozonized Bubble Column Reactor to Increase Phenol Degradation from Wastewater

Majhool,

Sukkar,

Alsaffar

2023

Preprint

View full text Add to dashboard Cite

The ozonation reaction in a bubble column reactor (BCR) has been widely used in the removal of phenol from wastewater, but the phenol removal efficiency in this type of reactor is limited because of low ozone solubility and reactivity in the system. In the present study, the phenol degradation was enhanced using α-Al2O3 as a packing material and a ZnO nanocatalyst in the BCR. The reactor diameter and height were 8 cm and 180 cm, respectively. The gas distributor was designed to include 52 holes of 0.5-mm diameter. Also, the gas holdup, pressure drop, and bubble size were measured as a function of the superficial gas velocity (i.e., 0.5, 1, 1.5, 2, 2.5, and 3 cm/s). The evaluation of the hydrodynamic parameters provided a deep understanding of the ozonation process to select the optimal operating parameters in the reactor. It was found that the best superficial gas velocity was 2.5 cm/s. A complete (100%) phenol removal was achieved for phenol concentrations of 15, 20, and 25 ppm at reaction times of 80, 90, and 100 min, respectively, using α-Al2O3 packing material and a ZnO nanocatalyst in the BCR. Additionally, the results provided a clear reaction mechanism describing the ozonized BCR. Finally, the applied treatment method can be used efficiently to remove phenol from wastewater at a low cost, with little consumed energy, and a simple operation.

show abstract

Degradation of phenolic wastewater by ozonation and Fe-based catalytic ozonation in multi injection bubble column reactor

Cited by 2 publications

References 5 publications

Combining α-Al2O3 Packing Material and a ZnO Nanocatalyst in an Ozonized Bubble Column Reactor to Increase the Phenol Degradation from Wastewater

Combining α-Al2O3 Packing Material and a ZnO Nanocatalyst in an Ozonized Bubble Column Reactor to Increase the Phenol Degradation from Wastewater

Combining α-Al<sub>2</sub>O<sub>3</sub> Packing Material and ZnO Nanocatalyst in an Ozonized Bubble Column Reactor to Increase Phenol Degradation from Wastewater

Contact Info

Product

Resources

About