Search Results - "Qin, Hejie"

The limitations of applying zero-valent iron technology in contaminants sequestration and the corresponding countermeasures: The development in zero-valent iron technology in the last two decades (1994–2014) by Guan, Xiaohong, Sun, Yuankui, Qin, Hejie, Li, Jinxiang, Lo, Irene M.C., He, Di, Dong, Haoran

“…Over the past 20 years, zero-valent iron (ZVI) has been extensively applied for the remediation/treatment of groundwater and wastewater contaminated with…”
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Characterization methods of zerovalent iron for water treatment and remediation by Li, Jinxiang, Dou, Xiaomin, Qin, Hejie, Sun, Yuankui, Yin, Daqiang, Guan, Xiaohong

“…Appropriately selecting methods for characterizing the reaction system of zerovalent iron (ZVI) favors its application for water treatment and remediation…”
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Enhanced trichloroethylene dechlorination by carbon-modified zero-valent iron: Revisiting the role of carbon additives by Guan, Xiaohong, Du, Xueying, Liu, Meichuan, Qin, Hejie, Qiao, Junlian, Sun, Yuankui

“…[Display omitted] •Carbon modification enhances the reactivity and selectivity of zero-valent iron.•A low carbon addition is sufficient to enhance…”
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Weak magnetic field accelerates chromate removal by zero-valent iron by Feng, Pian, Guan, Xiaohong, Sun, Yuankui, Choi, Wonyong, Qin, Hejie, Wang, Jianmin, Qiao, Junlian, Li, Lina

“…Weak magnetic field（WMF） was employed to improve the removal of Cr（VI） by zero-valent iron（ZVI） for the first time. The removal rate of Cr（VI） was elevated by…”
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Premagnetization for Enhancing the Reactivity of Multiple Zerovalent Iron Samples toward Various Contaminants by Li, Jinxiang, Qin, Hejie, Guan, Xiaohong

“…Premagnetization was applied to enhance the removal of various oxidative contaminants (including amaranth (AR27), lead ion (Pb2+), cupric ion (Cu2+), selenite…”
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Effects of Sulfidation and Nitrate on the Reduction of N‑Nitrosodimethylamine by Zerovalent Iron by Qin, Hejie, Guan, Xiaohong, Tratnyek, Paul G

“…Competition among oxidizing species in groundwater and wastewater for the reductive capacity of zerovalent iron (ZVI) makes the selectivity of ZVI for target…”
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Insights into the contrasting effects of sulfidation on dechlorination of chlorinated aliphatic hydrocarbons by zero-valent iron by Sun, Yuankui, Zheng, Kaiwei, Du, Xueying, Qin, Hejie, Guan, Xiaohong

“…•The broad-spectrum reactivity of sulfidated ZVI toward chlorinated compounds was evaluated.•Sulfidation favors direct electron transfer and thus the reduction…”
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Coupled Effect of Ferrous Ion and Oxygen on the Electron Selectivity of Zerovalent Iron for Selenate Sequestration by Qin, Hejie, Li, Jinxiang, Yang, Hongyi, Pan, Bingcai, Zhang, Weiming, Guan, Xiaohong

“…Although the electron selectivity (ES) of zerovalent iron (ZVI) for target contaminant and its utilization ratio (UR) decide the removal capacity of ZVI,…”
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Enhanced Cr(VI) removal by zero-valent iron coupled with weak magnetic field: Role of magnetic gradient force by Li, Jinxiang, Qin, Hejie, Zhang, Wei-xian, Shi, Zhong, Zhao, Dongye, Guan, Xiaohong

“…[Display omitted] •The improving-effect of WMF on Cr(VI) removal by ZVI depended on the MF intensity.•The removal of Cr(VI) by non-ferromagnetic Zn0 was not…”
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Combined Effect of Weak Magnetic Fields and Anions on Arsenite Sequestration by Zerovalent Iron: Kinetics and Mechanisms by Sun, Yuankui, Hu, Yihong, Huang, Tinglin, Li, Jinxiang, Qin, Hejie, Guan, Xiaohong

“…In this study, the effects of major anions (e.g., ClO4 –, NO3 –, Cl–, and SO4 2–) in water on the reactivity of zerovalent iron (ZVI) toward As­(III)…”
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Resolve the species-specific effects of iron (hydr)oxides on the performance of underlying zerovalent iron for metalloid removal: Identification of their key properties by Fan, Peng, Wu, Xuechen, Zeng, Jianrong, Li, Lina, Qian, Kun, Qin, Hejie, Guan, Xiaohong

“…Despite the importance of surface iron (hydr)oxides (Fe-(hydr)oxides) for the decontamination performance of zerovalent iron (ZVI) -based technologies has been…”
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Efficient full dechlorination of chlorinated ethenes on single enzyme-like Co−N4 sites in nitrogen-doped carbons by Qin, Hejie, Zha, Tanjie, Qian, Kun, Sun, Yuankui, Guan, Xiaohong, Chen, Chuncheng

“…Chlorinated ethenes are ubiquitous contaminants in groundwater. Here, by embedment of enzyme-like Co−N4 sites in the nitrogen-doped carbon support, we prepared…”
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Relationships of ternary activities for the enhanced Cr(VI) removal by coupling nanoscale zerovalent iron with sulfidation and carboxymethyl cellulose by Wang, Wenhao, Wang, Xingyu, Wu, Xuechen, Zhang, Jinhua, Qin, Hejie, Li, Jinxiang

“…Nanoscale zerovalent iron (nZVI) has been extensively applied in water pollution control. However, the reactivity of nZVI toward contaminants is mainly limited…”
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Modeling the Kinetics of Hydrogen Formation by Zerovalent Iron: Effects of Sulfidation on Micro- and Nano-Scale Particles by Qin, Hejie, Guan, Xiaohong, Bandstra, Joel Z, Johnson, Richard L, Tratnyek, Paul G

“…The hydrogen evolution reaction (HER) that generates H2 from the reduction of H2O by Fe0 is among the most fundamental of the processes that control reactivity…”
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Ferrous ion mitigates the negative effects of humic acid on removal of 4-nitrophenol by zerovalent iron by Qin, Hejie, Yin, Daqiang, Bandstra, Joel Z., Sun, Yuankui, Cao, Guomin, Guan, Xiaohong

“…[Display omitted] •Removal kinetics of 4-NP was globally fitted with a mixed-order model.•Humic acid at high concentrations suppressed the removal of…”
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Unexpected effect of buffer solution on removal of selenite and selenate by zerovalent iron by Qin, Hejie, Sun, Yuankui, Yang, Hongyi, Fan, Peng, Qiao, Junlian, Guan, Xiaohong

“…[Display omitted] •The effect of buffers on Se(IV)/Se(VI) removal by ZVI was studied at various pH0.•Buffers inhibited Se(IV) removal at pH0 > 6.0 and Se(VI)…”
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Abiotic reductive removal of organic contaminants catalyzed by carbon materials: A short review by Qin, Hejie, Sun, Yuankui, Rao, Dandan, Qiao, Junlian

“…Since the observation that carbon materials can facilitate electron transfer between reactants, there is growing literature on the abiotic reductive removal of…”
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Modeling the Kinetics of Hydrogen Formation by Zerovalent Iron: Effects of Sulfidation on Micro- and Nano-Scale Particles by Qin, Hejie, Guan, Xiaohong, Bandstra, Joel Z, Johnson, Richard L, Tratnyek, Paul G

“…The hydrogen evolution reaction (HER) that generates H2 from the reduction of H2O by Fe0 is among the most fundamental of the processes that control reactivity…”
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The enhancing effect of weak magnetic field on degradation of Orange II by zero-valent iron by Xiao, Zhongjin, Zhou, Qiaoli, Qin, Hejie, Qiao, Junlian, Guan, Xiaohong

“…The effects of weak magnetic field (WMF) on degrading Orange II by zero-valent iron (ZVI) as functions of pHini, ZVI dosages, and Orange II concentrations were…”
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