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Dive into the research topics where Horng-Bin Pan is active.

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Featured researches published by Horng-Bin Pan.


Dalton Transactions | 2014

Carbonate–H2O2 leaching for sequestering uranium from seawater

Horng-Bin Pan; Weisheng Liao; Chien M. Wai; Yatsandra Oyola; Christopher J. Janke; Guoxin Tian; Linfeng Rao

Uranium adsorbed on amidoxime-based polyethylene fiber in simulated seawater can be quantitatively eluted at room temperature using 1 M Na2CO3 containing 0.1 M H2O2. This efficient elution process is probably due to the formation of an extremely stable uranyl-peroxo-carbonato complex in the carbonate solution. After washing with water, the sorbent can be reused with minimal loss of uranium loading capacity. Possible existence of this stable uranyl species in ocean water is also discussed.


RSC Advances | 2015

Towards understanding KOH conditioning of amidoxime-based polymer adsorbents for sequestering uranium from seawater

Horng-Bin Pan; Li-Jung Kuo; Jordana R. Wood; Jonathan E. Strivens; Gary A. Gill; Christopher J. Janke; Chien M. Wai

Conditioning of polymer fiber adsorbents grafted with amidoxime and carboxylic acid groups is necessary to make the materials hydrophilic for sequestering uranium from seawater. Spectroscopic techniques were employed to study the effectiveness of the traditional KOH conditioning method (2.5% KOH at 80 °C) on recently developed high-surface-area amidoxime-based polymer fiber adsorbents developed at Oak Ridge National Laboratory. FTIR spectra reveal that the KOH conditioning process removes the proton from the carboxylic acids and also converts the amidoxime groups to carboxylate groups in the adsorbent. With prolonged KOH treatment (>1 h) at 80 °C, physical damage to the adsorbent material occurs which can lead to a significant reduction in the adsorbents uranium adsorption capability in real seawater during extended exposure times (>21 days). The physical damage to the adsorbent can be minimized by lowering the KOH conditioning temperature. For high-surface-area amidoxime-based adsorbents, 20 min of conditioning in 2.5% KOH at 80 °C or 1 h of conditioning in 2.5% KOH at 60 °C appears sufficient to achieve de-protonation of the carboxylic acid with minimal harmful effects to the adsorbent material. The use of NaOH instead of KOH can also reduce the cost of the base treatment process required for conditioning the amidoxime-based sorbents with minimal loss of adsorption capacity (≤7%).


Industrial & Engineering Chemistry Research | 2016

The Uranium from Seawater Program at the Pacific Northwest National Laboratory: Overview of Marine Testing, Adsorbent Characterization, Adsorbent Durability, Adsorbent Toxicity, and Deployment Studies

Gary A. Gill; Li-Jung Kuo; Chris Janke; Jiyeon Park; Robert T. Jeters; George T. Bonheyo; Horng-Bin Pan; Chien Wai; Tarang Khangaonkar; Laura Bianucci; Jordana R. Wood; Marvin G. Warner; Sonja M. Peterson; David G. Abrecht; Richard T. Mayes; Costas Tsouris; Yatsandra Oyola; Jonathan E. Strivens; Nicholas J. Schlafer; R. Shane Addleman; Wilaiwan Chouyyok; Sadananda Das; Jungseung Kim; Ken O. Buesseler; Crystal Breier; Evan D’Alessandro


Industrial & Engineering Chemistry Research | 2016

Elution of Uranium and Transition Metals from Amidoxime-Based Polymer Adsorbents for Sequestering Uranium from Seawater

Horng-Bin Pan; Li-Jung Kuo; Chien M. Wai; Naomi Miyamoto; Ruma Joshi; Jordana R. Wood; Jonathan E. Strivens; Christopher J. Janke; Yatsandra Oyola; Sadananda Das; Richard T. Mayes; Gary A. Gill


Industrial & Engineering Chemistry Research | 2017

Investigations into the Reusability of Amidoxime-Based Polymeric Adsorbents for Seawater Uranium Extraction

Li-Jung Kuo; Horng-Bin Pan; Chien M. Wai; Margaret Flicker Byers; Erich Schneider; Jonathan E. Strivens; Christopher J. Janke; Sadananda Das; Richard T. Mayes; Jordana R. Wood; Nicholas J. Schlafer; Gary A. Gill


Chemistry Select | 2017

Bicarbonate Elution of Uranium from Amidoxime-Based Polymer Adsorbents for Sequestering Uranium from Seawater

Horng-Bin Pan; Chien M. Wai; Li-Jung Kuo; Gary A. Gill; Guoxin Tian; Linfeng Rao; Sadananda Das; Richard T. Mayes; Christopher J. Janke


Chemistry Select | 2018

Temperature Dependence of Uranium and Vanadium Adsorption on Amidoxime-Based Adsorbents in Natural Seawater

Li-Jung Kuo; Gary A. Gill; Costas Tsouris; Linfeng Rao; Horng-Bin Pan; Chien M. Wai; Christopher J. Janke; Jonathan E. Strivens; Jordana R. Wood; Nicholas J. Schlafer; Evan K. D'Alessandro


Archive | 2015

Investigations into Alternative Desorption Agents for Amidoxime-Based Polymeric Uranium Adsorbents

Gary A. Gill; Li-Jung Kuo; Jonathan E. Strivens; Jordana R. Wood; Chien Wai; Horng-Bin Pan


ChemistrySelect | 2018

Cover Picture: Temperature Dependence of Uranium and Vanadium Adsorption on Amidoxime-Based Adsorbents in Natural Seawater. (ChemistrySelect 05/2018)

Li-Jung Kuo; Gary A. Gill; Costas Tsouris; Linfeng Rao; Horng-Bin Pan; Chien M. Wai; Christopher J. Janke; Jonathan E. Strivens; Jordana R. Wood; Nicholas J. Schlafer; Evan K. D'Alessandro


Archive | 2016

Summary of Adsorption Capacity and Adsorption Kinetics of Uranium and Other Elements on Amidoxime-based Adsorbents from Time Series Marine Testing at the Pacific Northwest National Laboratory

Gary A. Gill; Li-Jung Kuo; Jonathan E. Strivens; Jordana R. Wood; Nicholas J. Schlafer; Christopher J. Janke; Sadananda Das; Richard T. Mayes; Tomonori Saito; Suree Brown; Constantinos Tsouris; Costas Tsouris; Chien M. Wai; Horng-Bin Pan

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Jonathan E. Strivens

Pacific Northwest National Laboratory

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Jordana R. Wood

Pacific Northwest National Laboratory

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Christopher J. Janke

Oak Ridge National Laboratory

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Nicholas J. Schlafer

Pacific Northwest National Laboratory

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Richard T. Mayes

Oak Ridge National Laboratory

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Costas Tsouris

Oak Ridge National Laboratory

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Linfeng Rao

Lawrence Berkeley National Laboratory

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