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Dive into the research topics where Zhiqiang Xing is active.

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Featured researches published by Zhiqiang Xing.


Journal of Hazardous Materials | 2011

Selective adsorption of molybdenum(VI) from Mo-Re bearing effluent by chemically modified astringent persimmon.

Ying Xiong; Haitao Wang; Zhenning Lou; Weijun Shan; Zhiqiang Xing; Guichun Deng; Dongbei Wu; Da-Wei Fang; Biplob Kumar Biswas

Astringent persimmon was chemically cross-linked by formaldehyde to obtain a novel kind of adsorption gel, which was named as APF gel. The adsorption behaviors of Mo(VI) and Re(VII) along with other coexisting metals onto the APF gel were studied in the present paper. The APF gel was found to be effective for the adsorption of Mo(VI) while the gel is almost completely inert toward rhenium and calcium over the whole hydrochloric acid concentration region. The APF gel has a low affinity for iron, copper, lead, nickel, manganese and zinc ions when the concentration of HCl is higher than 1 mol/L. The gel exhibited selectivity only for Mo(VI) with a remarkably high adsorption capacity 1.05 mol/kg, and the adsorption behavior obeys the Langmuir model. According to the thermodynamic and kinetic studies, the endothermic adsorption process followed pseudo-second order kinetics. Also, its excellent adsorption characteristics for Mo(VI) were confirmed by the adsorption and elution tests using a column packed with the APF gel. The result provides a new approach for the recovery of Mo(VI) from a industrial waste effluent.


Transactions of Nonferrous Metals Society of China | 2010

Kinetics and mechanism of Re(VII) extraction and separation from Mo(VI) with trialkyl amine

Zhenning Lou; Ying Xiong; Junjun Song; Weijun Shan; Guangxi Han; Zhiqiang Xing; Yu-xia Kong

Abstract The extraction kinetics of rhenium(VII) or molybdenum(VI) with trialkyl amine (N235, R 3 N, R=C 8 –C 10 ) dissolved in heptane were investigated by constant interfacial cell with laminar flow, which aimed to identify the extraction regime, reaction zone and rate equations. The influence of stirring speed, temperature, specific interfacial area, extraction concentration and chlorine concentration on the extraction of both metals was studied. It is concluded that the extractions of Re(VII) and Mo(VI) both take place at the liquid–liquid interface, while the extraction regimes are chemically-controlled for rhenium and mixed controlled for molybdenum, respectively. The extraction rate equations and the rate-determining step were obtained under the experimental conditions, and the extraction rate constant of Re(VII) or Mo(VI) with N235 was calculated. These obtained kinetics parameters are different between Re(VII) and Mo(VI), which provides better possibilities for Re(VII) and Mo(VI) separations at proper conditions.


Separation Science and Technology | 2013

Selective Adsorption of Mo(VI) From Re(VII) Containing Effluent on Orange Waste Gel Modified by Ethylenediamine, Diethylamine, and Triethylamine

Weijun Shan; Jia Xu; Louzhen Ning; Da-Wei Fang; Zhiqiang Xing; Shuang Yue; Ying Xiong

New adsorption gels were prepared by chemically immobilizing functional groups of ethylenediamine, diethylamine and/or triethylamine on orange waste, named OW-en, OW-DEA, and OW-TEA, respectively. By comparing with the adsorption of other coexisting metals, such as Re(VII), Pb(II), Fe(III), Zn(II), Mn(VII), Ca(II), and Cu(II), the novel gels exhibited selectivity only for Mo(VI) and the adsorption behavior obeys the Langmuir model. The maximum adsorption capacity for molybdenum was in the order, OW-en (2.17 mol/kg) > OW-TEA (1.26 mol/kg) > OW-DEA (0.88 mol/kg). A kinetic study for the adsorption of molybdenum at various temperatures confirmed that the endothermic adsorption process followed pseudo-second order kinetics. In addition, its excellent adsorption characteristics for Mo(VI) were confirmed by the adsorption and elution tests using a column packed with the OW-en gel, especially by separation of Mo(VI) from Mo-Re containing industrial effluent.


Biomass & Bioenergy | 2012

Application of orange peel for adsorption separation of molybdenum(VI) from Re-containing industrial effluent

Weijun Shan; Da-Wei Fang; Ziyi Zhao; Yue Shuang; Louzhen Ning; Zhiqiang Xing; Ying Xiong


Applied Surface Science | 2017

Arsenic transformation and adsorption by iron hydroxide/manganese dioxide doped straw activated carbon

Ying Xiong; Qiang Tong; Weijun Shan; Zhiqiang Xing; Yuejiao Wang; Siqi Wen; Zhenning Lou


Journal of Chemical & Engineering Data | 2012

Equilibrium, Kinetics, and Thermodynamics Studies on the Recovery of Rhenium(VII) and Molybdenum(VI) from Industrial Wastewater by Chemically Modified Waste Paper Gel

Weijun Shan; Da-Wei Fang; Yue Shuang; Yu-xia Kong; Ziyi Zhao; Zhiqiang Xing; Biplob-Kumar Biswas; Ying Xiong


Industrial & Engineering Chemistry Research | 2014

Optimization of Mo(VI) Selective Separation by Eriocheir sinesis Crab Shells Gel

Ying Xiong; Yexia Li; Fuqiang Ren; Li Wan; Zhiqiang Xing; Zhenning Lou; Weijun Shan


Hydrometallurgy | 2015

Selective extraction and separation of Re(VII) from Mo(VI) by TritonX-100/N235/iso-amyl alcohol/n-heptane/NaCl microemulsion system

Zhenning Lou; Chunfang Guo; Xiaodong Feng; Shuqin Zhang; Zhiqiang Xing; Weijun Shan; Ying Xiong


Applied Surface Science | 2018

Enhanced catalytic activity of Ag nanoparticles supported on polyacrylamide/polypyrrole/graphene oxide nanosheets for the reduction of 4-nitrophenol

Hui Mao; Chunguang Ji; Meihong Liu; Zhenqian Cao; Dayin Sun; Zhiqiang Xing; Xia Chen; Yu Zhang; Xi-Ming Song


Journal of Chemical Technology & Biotechnology | 2015

Enhanced adsorption capacity and selectivity towards molybdenum in wastewater by a persimmon tannin waste based new adsorbent

Weijun Shan; Fuqiang Ren; Qing Zhang; Li Wan; Zhiqiang Xing; Zhenning Lou; Ying Xiong

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Li Wan

Liaoning University

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