Degradation of 2,4-Dichlorophenoxyacetic Acid in an Internal Circulation Three-Phase Fluidized Photoreactor Using N-TiO2/γ-Al2O3 Granule as Adsorbent and Photocatalyst

Liu, Miao; Huang, Donggen; Quan, Shuiqing; Zheng, Jianbin; Zhang, Wentao; Liu, Lei

doi:10.1061/(asce)ee.1943-7870.0000836

Cited by 8 publications

(1 citation statement)

References 24 publications

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“…The annular bed reactors are also used in the photocatalytic wastewater purification process. Liu et al [ 5 ] used UV light to study the degradation of 2,4‐dichlorophenoxyacetic acid in a three‐phase fluidized reactor. Rincón and La Motta, [ 6 ] Lim and Kim, [ 7 ] Pozzo et al, [ 8 ] Nam et al, [ 9 ] Haarstrick et al, [ 10 ] Kabir et al, [ 11 ] and Kumazawa et al [ 12 ] also carried out a similar type of work.…”

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confidence: 99%

Experimental estimation of the settling velocity and drag coefficient of the hollow cylindrical particles settling in non‐Newtonian fluids in an annular channel

Mohammad

Munshi

2023

Can J Chem Eng

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The drag coefficient data of particles settling in an annular channel is very much essential for designing different solid–fluid handling equipment, such as the fluidized bed. Experimental settling velocity, wall factor, and drag coefficient data of the hollow‐cylinder particle are presented. Carboxymethyl cellulose solution has been used as the working fluid with a flow index of 0.64 ≤ n ≤ 0.91 and a consistency index of 0.31 ≤ K ≤ 1.81. The experimental results covered a wide diameter ratio range (0.14 ≤ deq/L ≤ 0.46), hollow cylinder inner to outer diameter ratio (0.2 ≤ di/do ≤0.8), and Reynolds number (0.05 ≤ Re ≤ 51 and 0.09 ≤ Re∞ ≤ 55). deq, di, and do are the equivalent inner and outer diameters of the particle, L is the annular gap, and Re and Re∞ are the Reynolds numbers in the presence and absence of the wall effect, respectively. The wall factor decreased, and the drag coefficient increased with deq/L and di/do ratios. The above parameters declined with the Reynolds number. The hollow cylinder experienced a lesser wall effect than the spherical particles settling in a non‐annular channel. In some cases, the wall factor of the hollow cylinder is found to be equal to the spherical particles settling in an annular channel. The developed correlations have successfully predicted the drag coefficients of the hollow cylinder.

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