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Bioleaching of pyrite by *** and ***

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中国有色金属学会会刊：英文版 2008年第6期18卷 1415-1420页

作者：张麟邱冠周胡岳华孙小俊李建华顾帼华 School of Minerals Processing and bioengineering Central South University

黄铁矿氧化率面对 A 在各种各样的条件下面被检验。ferrooxidans 和 L。ferriphilum，不同的肉集中，接种数量， Fe3+ 的外部增加和起始的 pH 在珍视被执行。它被发现那 A。ferrooxidans 和 L。在 bioleaching 的类似的行为处理的 ferri... 详细信息

黄铁矿氧化率面对 A 在各种各样的条件下面被检验。ferrooxidans 和 L。ferriphilum，不同的肉集中，接种数量， Fe3+ 的外部增加和起始的 pH 在珍视被执行。它被发现那 A。ferrooxidans 和 L。在 bioleaching 的类似的行为处理的 ferriphilum 表演。增加的肉集中减少铁的沥滤的率，和高集中 Fe3+ 的外部增加对沥滤也不利黄铁矿。增加的接种数量和高起始的 pH 价值对沥滤有益黄铁矿，和这些改变的条件在沥滤上带更明显的效果由 L 的黄铁矿。ferriphilum 比由 A。ferrooxidans。结果也证明调整在沥滤的值处理的 pH 由于形成的 jarosite 困惑沥滤的黄铁矿。在沥滤形成的 Jarosite 过程与水晶的形态学用 XRD， SEM 和精力光谱分析，和碎片的可观的数量被观察在黄铁矿的表面上是在场的。结果暗示间接行动为 bioleaching 黄铁矿是更重要的。

关键词：黄铁矿氧化亚铁生物浸取黄钾铁矾氧化还原

Behavioral and physiological responses of striped field mice (Apodemus agrarius) to predator odor

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Integrative Zoology 2011年第4期6卷 334-340页

作者： Zhenlong WANG Baishi WANG Jiqi LU Department of bioengineering Zhengzhou UniversityZhengzhouChina

Predation risk is one of the most important selective forces in nature and has significant effects on the behavior and physiology of prey *** species have evolved several different traits to reduce and avoid this predation *** research aimed to determine the behavioral and physiological responses of striped field mice to predator *** the present study,we compared the agonistic behavior in male and female striped field mice(Apodemus agrarius Pallas,1771)of the same sexes under the odor derived from a male Himalayan weasel(Mustela sibirica).Dyads were subjected to 5 min staged encounters in neutral arenas once a week for 3 weeks during which agonistic and social behaviors were recorded and fecal hormone concentrations were determined using pre-column derivatization and high performance liquid chromatography ***,we also tested the effects of weasel odor on the adrenal *** results showed that:(i)male striped field mice did not exhibit any change in body weight and physiological characteristics but their aggressive behavior changed over time,and(ii)females responded to predation risk by significantly decreasing body mass and through increases in fecal cortisol levels and adrenal gland *** data show significant sex differences in the body weight,adrenal gland indices and fecal cortisol levels of striped field mouse under predation risk.

关键词： attack behavior cortisol predator odor striped field mouse(Apodemus agrarius)

Cleaning of high antimony smelting slag from an oxygen-enriched bottom-blown by direct reduction

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Rare Metals 2019年第8期38卷 800-804页

作者： Hong-Lin Luo Wei Liu Wen-Qing Qin Yong-Xing Zheng Kang Yang School of Minerals Processing and bioengineering Central South University

Cleaning of high antimony smelting slag from an oxygen-enriched bottom-blown was tested by direct reduction in a laboratory-scale electric *** effects of added CaO,mass ratio of coal(experimental)to coal(theoretical)(ω)and the slag type on the reduction procedure were *** contents of Sb and Au were *** contamination of the metal phase was analyzed as this may impede the economical viability of this *** initial slag,coal and CaO were mixed and homogenized before charging into the furnace,and the residual slag averagely contains 1.26 ***^-1 Au and1.17 wt% ***,the iron contamination of antimony alloy becomes unacceptably high in this case as the metal phases contain up to 10 wt% *** the slag system with mass ratio of SiO2:FeO:CaO= 45:27:18,the residual slag obtained after reduction under these conditions averagely contains98 % in all experiments which is proved to be an economic and cleaning process.

关键词： High antimony slag Direct cleaning reduction Gold

A New Tetranuclear Cobalt Cluster with(1H-Benzimidazol-2-yl)-methanol Synthesis and Crystal Structure

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Chinese Journal of Structural Chemistry 2014年第8期33卷 1135-1140页

作者：黄秋萍李桂张淑华张海洋 College of Chemistry and bioengineering Guilin University of Technology

A new tetranuclear cluster [Co4（bm）6C12]＇（H20）2-（CH3OH）（1, Hbm is （1H-benzi- midazol-2-yl）-methanol） has been synthesized by solvothermal method and structurally determined by IR, elemental analysis, and single-crystal X-ray diffraction. Complex 1 belongs to monoclinie space group P21/n with a = 21.1713（5）, b = 12.7948（3）, c = 24.0195（9） А, β = 95.309（3）°, V = 6478.6（3） A3, Z = 4, F（000） = 2568, Dc = 1.289 ***-3, Mr = 1257.63,μ= 9.096 mm-I, S = 1.000, the final R = 0.0861 and wR = 0.2552 for 4956 observed reflections with 1 〉 20（/）. Two connected face-sharing cubes are observed in the framework of 1, each with one vertex missing. Complex 1 forms a 2-D network through N-H...O hydrogen bonds. The apparent holes can be observed.

关键词： (1H-Benzimidazol-2-yl)-methanol tetranuclear cluster crystal structure

Simulated small-scale pilot heap leaching of low-grade copper sulfide ore with selective extraction of copper

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中国有色金属学会会刊：英文版 2008年第6期18卷 1463-1467页

作者：覃文庆张雁生黎维中王军 School of Resource Processing and bioengineering Central South University

低档铜硫化物矿石的 bioleaching 和铜的选择抽取被调查。在煤油溶解的 Lix984 被用作提炼之物。结果证明有选择地沥滤是可能的从由堆沥滤的矿石的铜。沥滤的铜集中在 250 d 以后的白酒是 2.17 g/L，并且铜集中是在溶剂抽取以后的 0.27 ... 详细信息

低档铜硫化物矿石的 bioleaching 和铜的选择抽取被调查。在煤油溶解的 Lix984 被用作提炼之物。结果证明有选择地沥滤是可能的从由堆沥滤的矿石的铜。沥滤的铜集中在 250 d 以后的白酒是 2.17 g/L，并且铜集中是在溶剂抽取以后的 0.27 g/L。leach 白酒受到溶剂抽取，擦洗并且为铜和杂质的移动的丰富的选择脱衣。从脱衣的周期生产的怀孕的铜硫酸盐答案对铜电迷合适。

关键词：生物浸取黄铜矿萃取紫铜

Optimization of L(+)-Lactic Acid Production from Xylose with Rhizopus Oryzae Mutant RLC41-6 Breeding by Low-Energy Ion Implantation

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Plasma Science and Technology 2007年第5期9卷 638-642页

作者：杨英歌樊永红李文王冬梅吴跃进郑之明余增亮 Key Laboratory of Ion Beam bioengineering Chinese Academy of SciencesHefei 230031China Bioengineering high vocational school of XuzhouXuzhou 221006China Key Laboratory of Ion Beam bioengineering Chinese Academy of SciencesHefei 230031China

In order to obtain an industrial strain with a higher L（＋）-lactic acid yield, the strain Rhizopus oryzae PW352 was mutated by means of nitrogen ion beam implantation and the mutant strain Rhizopus oryzae RLC41-6 was obtained. An experimental finding was made in surprise that Rhizopus oryzae mutant RLC41-6 is not only an L（＋）-lactic acid producer from corn starch but also an efficient producer of L（＋）-lactic acid from xylose. Under optimal conditions, the production of L（＋）-lactic acid from 100 g/L xylose reached 77.39 g/L after 144 h fed-batch fermentation, A high mutation rate and a wide mutation spectrum of low-energy ion implantation were observed in the experiment.

关键词： L(+)-lactic acid xylose Rhizopus oryzae ion implantation

First-principle investigation on mechanism of Ca ion activating flotation of spodumene

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Rare Metals 2014年第3期33卷 358-362页

作者： Fu-Shun Yu Yu-Hua Wang Jin-Ming Wang Zhen-Fu Xie Lei Zhang School of Minerals Processing and bioengineering Central South University

Different hypotheses of the activation mechanisms of metallic ions for silicate minerals flotation were stated in this work. Spodumene and Ca ion were taken to illustrate this issue. Flotation test results and diagram of Ca ion species distribution vs pH show that the dominant hydrolyzed species are Ca（OH）？and Ca（OH）2, which is in correspondence with the maximum flotation recovery of spodumene. Density functional theory（DFT） calculation results reveal further that the precipitation of calcium hydroxide on spodumene surface is the effective process to activate the flotation of spodumene.

关键词： Spodumene flotation Ca ion Activationmechanism Density functional theory calculation

Solid Acid Used as Highly Efficient Catalyst for Esterification of Free Fatty Acids with Alcohols

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China Petroleum Processing & Petrochemical Technology 2013年第1期15卷 19-24页

作者： Zhang Qiuyun Li Hu Qin Wenting Liu Xiaofang Zhang Yuping Xue Wei Yang Song State-Local joint Laboratory for Comprehensive Utilization of Biomass State Key Laboratory Breeding Base of Green Pesticides and Agricultural BioengineeringCenter for Research and Development of Fine ChemicalsGuizhou University

Anovel solid acid catalyst, which was prepared from sodium alginate (SA) and metal chlorides and characterized with XRD and FT-IR spectrometry, was used for the preparation of biodiesel via esterification reaction. The study results showed that the aluminum-alginate complex prepared in a cheap and easy way exhibited high catalytic activity, and a 92.6% conversion of methyl oleate was obtained in the presence of 4m% of catalyst dosage upon refluxing for 3h of methanol and acid mixed in a molar ratio of 10:1. It should be noted that the catalyst can be applied to the esterification reaction of fatty acids with various carbon chain length on methanol or different short chain alcohols, indicating that the catalyst is suitable for the preparation of biodiesel from waste oils with a high acid value.

关键词： sodium alginate solid acid esterification biodiesel

Ultrasonic-assisted Synthesis of Fe Nanoparticles in the Presence of Poly（N-vinyl-2-pyrrolidone）

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Chinese Journal of Chemistry 2011年第9期29卷 1829-1836页

作者： Xu, Ying Zhang, Xiaoyan Hsing, Yiming Fang, Yuzhi Department of Chemistry East China Normal University Shanghai 200062 China Department of Chemical Engineering Bioengineering Graduate Program the Hong Kong University of Science and Technology Hong Kong China

Zero-valent iron particles were prepared by wet reduction chemistry assisted with ultrasonic treatment. Such prepared particles have uniform size, exhibit crystalline structure and show strong pararnagnetic property. Their surface modification by coating poly（N-vinyl-2-pyrrolidone）（PVP） was investigated. The resulting Fe（0）-PVP particles were monodispersed and possessed enhancing magnetization saturation. Those synthesis conditions to control the particle size and distribution were exploited.

关键词： nanoparticles magnetic properties ultrasonic-assisted wet reduction poly(N-vinyl-2-pyrrolidone)