Iodine Removal Efficiency in Non-Submerged and Submerged Self-Priming Venturi Scrubber

Ali, Majid; Yan, Changqi; Sun, Zhongning; Gu, Haifeng; Junlong, Wang; Mehboob, Khurram

doi:10.5516/net.03.2012.047

Cited by 37 publications

(12 citation statements)

References 12 publications

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“…4,[13][14][15][16][17][18] The reason for selecting silver-containing materials over traditional liquid scrubbing methods is concluded to be stronger Ag-I bond and solid form, therefore, higher removal efficiency and lower operation cost. 4,[19][20][21][22] Among these silver-containing materials, Ag 0 Z and Ag 0 -Aerogel have been studied continuously in US national laboratories and universities for their high iodine removal efficiency and relatively greater resistance to aging caused by potential contaminants in VOG and DOG (NO x , water vapor, air). 12,17, 23 Nan et.al 16,19 have conducted the single layer adsorption experiments of I 2 on Ag 0 Z and reported approximately 12 wt% I 2 adsorption capacity at 423K.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Methyl Iodide on Reduced Silver-Functionalized Silica Aerogel: Kinetics and Modeling

Tang

Choi

Nan

et al. 2020

Preprint

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The low concentration methyl iodides (CH 3 I) adsorption process on reduced silver-functionalized silica aerogel (Ag 0 -Aerogel) was studied. The kinetic data were acquired using a continuous flow adsorption system. Because the corresponding physical process was observed, the shrinking core model (SCM) was modified and applied. An average CH 3 I pore diffusivity was calculated, the CH 3 I-Ag 0 -Aerogel reaction was identified as a 1.37 order reaction instead of first order reaction, and the n th order reaction rate constant was determined. This modified SCM significantly increases the accuracy of adsorption behavior prediction at low adsorbate concentration. Modeling results indicate that the overall adsorption process is controlled by the pore diffusion. However, at low adsorbate concentration (<100 ppbv), the CH 3 I adsorption is limited to the surface reaction due to the low uptake rate in a predictable time period.

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Section: Introductionmentioning

confidence: 99%

Adsorption of Methyl Iodide on Reduced Silver-Functionalized Silica Aerogel: Kinetics and Modeling

Tang

Choi

Nan

et al. 2020

Preprint

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“…Ali et al tested a self-priming venturi scrubber for the I 2 removal efficiency under submerged and nonsubmerged conditions. The submerged conditions indicated the highest efficiency of 99.9 ± 0.1%, which was higher than the nonsubmerged conditions . Later on, Gulhane et al studied the I 2 removal efficiency in a self-priming venturi scrubber under submerged conditions using different pH solutions as a scrubbing liquid .…”

Section: Removal Of Radioactive Iodinementioning

confidence: 99%

“…The submerged conditions indicated the highest efficiency of 99.9 ± 0.1%, which was higher than the nonsubmerged conditions. 101 Later on, Gulhane et al studied the I 2 removal efficiency in a self-priming venturi scrubber under submerged conditions using different pH solutions as a scrubbing liquid. 102 The maximum iodine removal efficiency of 66.62% was achieved in solutions at pH 10.…”

Section: Column-based Materialsmentioning

confidence: 99%

Recent Advances in the Removal of Radioactive Iodine and Iodide from the Environment

et al. 2023

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Iodine (I 2 ) in the form of iodide ions (I − ) is an essential chemical element in the human body. Iodine is a nonmetal that belongs to the VIIA group (halogens) in the periodic table. Over the last couple of centuries, the exponential growth of human society triggered by industrialization coincided with the use of iodine in a wide variety of applications, including chemical and biological processes. However, through these processes, the excess amount of iodine eventually ends up contaminating soil, underground water, and freshwater sources, which results in adverse effects. It enters the food chain and interferes with biological processes with serious physiological consequences in all living organisms, including humans. Existing removal techniques utilize different materials such as metal−organic frameworks, layered double hydroxides, ion-exchange resins, silver, polymers, bismuth, carbon, soil, MXenes, and magnetic-based materials. From our literature survey, it was clear that absorption techniques are the most frequently experimented with. In this Review, we have summarized current advancements in the removal of iodine and iodide from human-made contaminated aqueous waste.

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“…Multiple silver containing materials, including macroreticular resins, silver impregnated alumina, silver exchanged faujasite, hydrogen‐reduced silver exchanged mordenite (Ag 0 Z), and reduced silver‐functionalized silica aerogel (Ag 0 ‐Aerogel), have been developed and studied for I 2 and organic iodides adsorption 4,10,14‐18 . The reason for selecting silver‐containing materials over traditional liquid scrubbing methods is concluded to be stronger AgI bond and solid form, therefore, higher removal efficiency and lower operation cost 4,19‐22 . Among these silver‐containing materials, Ag 0 Z and Ag 0 ‐Aerogel have been studied continuously in US national laboratories and universities for their high iodine removal efficiency and relatively greater resistance to aging caused by potential contaminants in VOG and DOG (NO x , water vapor, air) 14,17,23 .…”

Section: Introductionmentioning

confidence: 99%

“…4,10,[14][15][16][17][18] The reason for selecting silver-containing materials over traditional liquid scrubbing methods is concluded to be stronger Ag I bond and solid form, therefore, higher removal efficiency and lower operation cost. 4,[19][20][21][22] Among these silver-containing materials, Ag 0 Z and Ag 0 -Aerogel have been studied continuously in US national laboratories and universities for their high iodine removal efficiency and relatively greater resistance to aging caused by potential contaminants in VOG and DOG (NO x , water vapor, air). 14,17,23 Nan et al 16,19 have conducted the single-layer adsorption experiments of I 2 on Ag 0 Z and reported approximately 12 wt% Uptake mass Absorbent mass À Á I 2 adsorption capacity at 423 K.…”

mentioning

confidence: 99%

Adsorption of methyl iodide on reduced silver‐functionalized silica aerogel: Kinetics and modeling

et al. 2021

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The low concentration methyl iodide (CH3I) adsorption process on reduced silver‐functionalized silica aerogel (Ag0‐Aerogel) was studied. The kinetic data were acquired using a continuous flow adsorption system. Because the corresponding physical process was observed, the shrinking core model (SCM) was modified and applied. An average CH3I pore diffusivity was calculated, the CH3I‐Ag0‐Aerogel reaction was identified as a 1.40 order reaction instead of first order reaction, and the nth order reaction rate constant was determined. This modified SCM significantly increases the accuracy of adsorption behavior prediction at low adsorbate concentration. Modeling results indicate that the overall adsorption process is controlled by the pore diffusion. However, at low adsorbate concentration (ppbv level), the CH3I adsorption is limited to the surface reaction due to the low uptake rate in a predictable time period.

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Iodine Removal Efficiency in Non-Submerged and Submerged Self-Priming Venturi Scrubber

Cited by 37 publications

References 12 publications

Adsorption of Methyl Iodide on Reduced Silver-Functionalized Silica Aerogel: Kinetics and Modeling

Adsorption of Methyl Iodide on Reduced Silver-Functionalized Silica Aerogel: Kinetics and Modeling

Recent Advances in the Removal of Radioactive Iodine and Iodide from the Environment

Adsorption of methyl iodide on reduced silver‐functionalized silica aerogel: Kinetics and modeling

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