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Oxidative leaching kinetics of molybdenum-uranium ore in H

T. A. Lasheen, M. E. El-Ahmady, H. B. Hassib, A. S. Helal

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 95-102 doi: 10.1007/s11705-013-1317-6

Abstract: The processing of molybdenum-uranium ore in a sulfuric acid solution using hydrogen peroxide as an oxidantThe leaching temperature, hydrogen peroxide concentration, sulfuric acid concentration, leaching timeUnder these experimental conditions, the extraction efficiency of molybdenum was about 98.4%, and the uraniumThe leaching kinetics of molybdenum showed that the reaction rate of the leaching process is controlledThe leaching process follows the kinetic model 1 ? (1?

Keywords： leaching of molybdenum     leaching of uranium     kinetics    

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Development and Prospect of China Uranium Mining and Metallurgy

Que Weimin,Wang Haifeng,Niu Yuqing,Zhang Feifeng,Gu Wancheng

Strategic Study of CAE 2008, Volume 10, Issue 3,   Pages 44-53

Abstract:

The development of industry of uranium mining and metallurgy in Chinahas been reviewed generally, emphasizing investigation approaches and application levels of uraniummining technologies such as in-situ leaching and heap leaching, stope leaching.On the basis of analysisof deposit resources, the development orientation of uranium mining and metallurgy in China is pointedin 21th century, and the only way to realize sustainable development of uranium mining and metallurgy

Keywords： uranium mining     in-situ leaching     heap leaching     extraction     purification     development    

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Contributions of adsorption, bioreduction and desorption to uranium immobilization by extracellular polymeric

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 9, doi: 10.1007/s11783-023-1707-z

Abstract:

● EPS immobilizes U(VI) via adsorption, bioreduction and desorption.

Keywords： Adsorption     Bioreduction     Desorption     Kinetics     Isotherm     Uranium    

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Characteristics of the stabilized/solidified municipal solid wastes incineration fly ash and the leaching

Yan SHAO,Haobo HOU,Guangxing WANG,Sha WAN,Min ZHOU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 192-200 doi: 10.1007/s11783-014-0719-0

Abstract: mineralogical characteristics and the distributions of metals in matrices, were tested by toxic characteristic leachingContinuous acid extraction was utilized to extract metal ions and characterize their leaching behavior

Keywords： municipal solid waste incineration (MSWI) fly ash     blast furnace slag     leaching behavior     Cr     Pb    

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Assessment of leaching behavior and human bioaccessibility of rare earth elements in typical hospital

Chunfeng Wang, Guanfei Chen, Yanchen Zhu, Dan Yao, Wanfeng Wang, Lianjun Wang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 6, doi: 10.1007/s11783-017-0946-2

Abstract: Leaching behavior and gastrointestinal bioaccessibility of rare earth elements (REEs) from hospital wasteIn the same ash sample, the leaching concentrations of individual REEs determined by the Toxicity CharacteristicLeaching Procedure (TCLP) were higher than those detected by the European standard protocol (EN-typetest), thereby suggesting that the low pH value of leaching solution was an important factor influencing

Keywords： Assessment     Rare earth elements     Leaching behavior     Bioaccessibility     Hospital waste    

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Research progress of adsorptive technology in processing wastewater with low concentration of uranium

Gao Junkai,Gu Ping,Zhang Guanghui,Gao Xin,Hou Li´an

Strategic Study of CAE 2014, Volume 16, Issue 7,   Pages 73-78

Abstract:

In this paper some characteristics of uranium in aqueous solution andprogress in recent years on adsorption technologies in treatment wastewater with low concentration of uranium

Keywords： radioactive wastewater     uranium     adsorption     zero-valent Iron    

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Investigation of Cu leaching from municipal solid waste incinerator bottom ash with a comprehensive approach

Jun YAO, Wenbing LI, Fangfang XIA, Jing WANG, Chengran FANG, Dongsheng SHEN

Frontiers in Energy 2011, Volume 5, Issue 3,   Pages 340-348 doi: 10.1007/s11708-010-0131-9

Abstract: This study used a comprehensive approach to characterize the leaching behavior of copper (Cu) from theThe batch titration procedure was used to determine the acid neutralizing capacity and Cu leaching asThe Cu leaching pattern was not only affected by dissolved organic carbon, it was also limited by itsThese findings provide an important insight into predicting the leaching behavior of Cu from the MSWI

Keywords： MSWI bottom ash     Cu leaching     batch titration procedure     SEP    

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The influence of curing conditions on the mechanical properties and leaching of inorganic polymers made

Remus I. Iacobescu, Valérie Cappuyns, Tinne Geens, Lubica Kriskova, Silviana Onisei, Peter T. Jones, Yiannis Pontikes

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 317-327 doi: 10.1007/s11705-017-1622-6

Abstract: This study reports on the impact of the curing conditions on the mechanical properties and leaching ofGeochemical modelling and two leaching tests were performed, the EA NEN 7375 tank test, and the BS ENResults show that Cu, Ni, Pb, Zn and As leaching occurred even at high pH, which varied between 10 andLeaching values obtained were below the requirements for non-shaped materials of Flemish legislation

Keywords： inorganic polymer     geochemical leaching modelling     heavy metals     recycling     non-ferrous fayalitic slag     curing    

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Situation and Development Prospect of Uranium Resources Exploration in China

Zhang Jindai,Li Youliang,Jian Xiaofei

Strategic Study of CAE 2008, Volume 10, Issue 1,   Pages 54-60

Abstract:

History of uranium exploration and the general situation of identifieduranium resources in China are introduced briefly in the paper, the feature of uranium resources isIn accordance with the fact that the exploration level of uranium resources is quite low in China, itnatural uranium from nuclear power sector.According to the exploration ability and uranium resources potential in China, it is believed that uranium

Keywords： uranium resources     exploration     potentiality     prospect    

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Reinforcement of the two-stage leaching of laterite ores using surfactants

Peiyu Zhang, Hairui Wang, Jingcheng Hao, Jiwei Cui

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3,   Pages 562-570 doi: 10.1007/s11705-020-1946-5

Abstract: A two-stage leaching process, namely, high-pressure acid leaching-atmospheric acid leaching, was usedThe leaching ratio of Ni was low because of adsorption and incomplete leaching.In this work, surfactants were used as additives to boost the leaching ratio of Ni.Leaching results showed that stearyl trimethyl ammonium chloride (STAC) apparently increased the leachingKinetics analysis indicated that the leaching process was controlled by chemical reaction.

Keywords： laterite ore     Ni     surfactant     acid leaching    

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Research and development of the continuous pressure acid leaching technology for the pretreatment of

Wang Jikun,Feng Guilin

Strategic Study of CAE 2009, Volume 11, Issue 5,   Pages 18-22

Abstract: Small-scale and half-industrialized tests show that direct pressure acid leaching of copper anode slimeThe trends of Ag, Se and Te in continuous leaching process are obviously different from those in discontinuousleaching process, and the leaching results are better than those of discontinuous pressure leaching

Keywords： copper anode slime     comprehensive use     pressure acid leaching     continous leaching process    

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Microbial communities biostimulated by ethanol during uranium (VI) bioremediation in contaminated sediment

Mary Beth LEIGH,Wei-Min WU,Erick CARDENAS,Ondrej UHLIK,Sue CARROLL,Terry GENTRY,Terence L. MARSH,Jizhong ZHOU,Philip JARDINE,Craig S. CRIDDLE,James M. TIEDJE

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 453-464 doi: 10.1007/s11783-014-0721-6

Abstract: Stable isotope probing (SIP) was used to identify microbes stimulated by ethanol addition in microcosms containing two sediments collected from the bioremediation test zone at the US Department of Energy Oak Ridge site, TN, USA. One sample was highly bioreduced with ethanol while another was less reduced. Microcosms with the respective sediments were amended with C labeled ethanol and incubated for 7 days for SIP. Ethanol was rapidly converted to acetate within 24 h accompanied with the reduction of nitrate and sulfate. The accumulation of acetate persisted beyond the 7 d period. Aqueous U did not decline in the microcosm with the reduced sediment due to desorption of U but continuously declined in the less reduced sample. Microbial growth and concomitant C-DNA production was detected when ethanol was exhausted and abundant acetate had accumulated in both microcosms. This coincided with U(VI) reduction in the less reduced sample. C originating from ethanol was ultimately utilized for growth, either directly or indirectly, by the dominant microbial community members within 7 days of incubation. The microbial community was comprised predominantly of known denitrifiers, sulfate-reducing bacteria and iron (III) reducing bacteria including , , , and others, including the known U(VI)-reducing bacteria A , and The findings suggest that ethanol biostimulates the U(VI)-reducing microbial community by first serving as an electron donor for nitrate, sulfate, iron (III) and U(VI) reduction, and acetate which then functions as electron donor for U(VI) reduction and carbon source for microbial growth.

Keywords： Stable isotope probing (SIP)     ethanol     acetate     uranium reduction     sediment     bioremediation    

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Synthesis of graphene oxide nanoribbons/chitosan composite membranes for the removal of uranium from

Xuewen Hu, Yun Wang, Jinbo Ou Yang,Yang Li, Peng Wu, Hengju Zhang, Dingzhong Yuan, Yan Liu, Zhenyu Wu, Zhirong Liu

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 1029-1038 doi: 10.1007/s11705-019-1898-9

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Leaching of aluminum from coal spoil by mechanothermal activation

Xiaoxue SUN,Yuzhu SUN,Jianguo YU

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 2,   Pages 216-223 doi: 10.1007/s11705-015-1518-2

Abstract: This resulted in a high aluminum leaching activity in the mechanothermally activated CS.

Keywords： coal spoil     mechanothermal compound activation     leaching    

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Leaching toxicity characteristics of municipal solid waste incineration bottom ash

Khamphe PHOUNGTHONG,Yi XIA,Hua ZHANG,Liming SHAO,Pinjing HE

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 399-411 doi: 10.1007/s11783-015-0819-5

Abstract: The physico-chemical properties and leaching behavior of MSWIBA were studied, and ecotoxicological testingIn addition, the cluster of these variables indicated similar leaching behaviors.Overall, the research demonstrated that the ecotoxicological risks resulting from MSWIBA leaching could

Keywords： Municipal solid waste incineration     bottom ash     alternative material     leaching tests     toxicity     Vibrio    

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Title Author Date Type Operation

Oxidative leaching kinetics of molybdenum-uranium ore in H

T. A. Lasheen, M. E. El-Ahmady, H. B. Hassib, A. S. Helal

Journal Article

Development and Prospect of China Uranium Mining and Metallurgy

Que Weimin,Wang Haifeng,Niu Yuqing,Zhang Feifeng,Gu Wancheng

Journal Article

Contributions of adsorption, bioreduction and desorption to uranium immobilization by extracellular polymeric

Journal Article

Characteristics of the stabilized/solidified municipal solid wastes incineration fly ash and the leaching

Yan SHAO,Haobo HOU,Guangxing WANG,Sha WAN,Min ZHOU

Journal Article

Assessment of leaching behavior and human bioaccessibility of rare earth elements in typical hospital

Chunfeng Wang, Guanfei Chen, Yanchen Zhu, Dan Yao, Wanfeng Wang, Lianjun Wang

Journal Article

Research progress of adsorptive technology in processing wastewater with low concentration of uranium

Gao Junkai,Gu Ping,Zhang Guanghui,Gao Xin,Hou Li´an

Journal Article

Investigation of Cu leaching from municipal solid waste incinerator bottom ash with a comprehensive approach

Jun YAO, Wenbing LI, Fangfang XIA, Jing WANG, Chengran FANG, Dongsheng SHEN

Journal Article

The influence of curing conditions on the mechanical properties and leaching of inorganic polymers made

Remus I. Iacobescu, Valérie Cappuyns, Tinne Geens, Lubica Kriskova, Silviana Onisei, Peter T. Jones, Yiannis Pontikes

Journal Article

Situation and Development Prospect of Uranium Resources Exploration in China

Zhang Jindai,Li Youliang,Jian Xiaofei

Journal Article

Reinforcement of the two-stage leaching of laterite ores using surfactants

Peiyu Zhang, Hairui Wang, Jingcheng Hao, Jiwei Cui

Journal Article

Research and development of the continuous pressure acid leaching technology for the pretreatment of

Wang Jikun,Feng Guilin

Journal Article

Microbial communities biostimulated by ethanol during uranium (VI) bioremediation in contaminated sediment

Mary Beth LEIGH,Wei-Min WU,Erick CARDENAS,Ondrej UHLIK,Sue CARROLL,Terry GENTRY,Terence L. MARSH,Jizhong ZHOU,Philip JARDINE,Craig S. CRIDDLE,James M. TIEDJE

Journal Article

Synthesis of graphene oxide nanoribbons/chitosan composite membranes for the removal of uranium from

Xuewen Hu, Yun Wang, Jinbo Ou Yang,Yang Li, Peng Wu, Hengju Zhang, Dingzhong Yuan, Yan Liu, Zhenyu Wu, Zhirong Liu

Journal Article

Leaching of aluminum from coal spoil by mechanothermal activation

Xiaoxue SUN,Yuzhu SUN,Jianguo YU

Journal Article

Leaching toxicity characteristics of municipal solid waste incineration bottom ash

Khamphe PHOUNGTHONG,Yi XIA,Hua ZHANG,Liming SHAO,Pinjing HE

Journal Article