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J. Cent. South Univ. (2012) 19: 1961-1966 DOI: 10.1007/s11771-012-1232-x Sulfur speciation transformation during bioleaching of pyrite-containing sphalerite concentrate by thermophile... and Springer-Verlag Berlin Heidelberg 2012 Abstract: Sulfur speciation transformation during bioleaching of pyrite-containing sphalerite concentrate by thermophile Sulfolobus metallicus (S. metallicus......
Bioleaching of vanadium from barren stone coal and its effect on the transition of vanadium speciation and mineral phaseXin Wang1,2,Hai Lin3,2,Ying-bo Dong3,2,Gan-yu Li1,21. School of Civil... the transition of mineral phases and vanadium speciation during the bioleaching process. Parameters including the initial p H value, initial Fe2+ concentration, solid load, and inoculum quantity were examined......
火焰原子吸收光谱法在分析污泥焚烧飞灰中重金属化学形态上的应用刘敬勇1,孙水裕1(1.广东省广州市广东工业大学环境科学与工程学院)摘 要:应用微波消解-火焰原子吸收光谱法(FAAS)测定污泥焚烧飞灰中的Cd,Cr,Cu,Mn,Ni,Pb,Zn等各重金属元素总量.研究发现,样品用HNO3-HF混合酸经微波消解后,溶解时间由原来的3~5 h缩短到30 min.选择合适的分析谱线,用FAAS直接测定试液中上述7种重金属元素各自总量及其不同形态含量,所得各元素的线性相关系数均大于0.999 0.分析结果表明,污泥焚烧飞灰......
；钝化；次生硫化铜矿 中图分类号:TF18 文献标志码:A Progress in sulfur speciation transformation during chalcopyrite bioleaching LIANG Chang-li1, 2, 3, XIA Jin-lan1, 2, YANG Yi1, 2, NIE Zhen-yuan1... speciation transformation during chalcopyrite bioleaching is a useful way to reveal the speciation and formation of the key materials that hamper or enhance the dissolution of chalcopyrite, therefore......
形态 中图分类号:Q 939 文献标志码:A Sulfur/iron oxidation activity of three typical bioleaching bacteria and sulfur speciation... in bioleaching of chalcopyrite were compared. Meanwhile, the relevant sulfur speciation on the surface of chalcopyrite leached by pure/mixed bacteria was investigated by X-ray diffractometry (XRD) and X ray......
J. Cent. South Univ. Technol. (2009) 16: 0253-0257 DOI: 10.1007/s11771-009-0043-1 Speciation of chromium in soil inoculated with Cr(Ⅵ)-reducing strain, Bacillus sp. XW-4 XU Wei-hua(徐卫华), LIU... fragments, and soil fauna in soil samples were removed by hand. The collected soil was air-dried, and then passed through a 1 mm sieve. Some physico- chemical properties of this treated soil sample......
分率图及其主要存在形态[63-64] Fig. 1 Ion fraction diagram of Sb(Ⅲ)(a) and Sb(Ⅴ)(b) in water, and main chemical speciation(c) of Sb in water[63-64] 卤族元素是水中锑的常见配体,其中以Sb(Ⅲ)-Cl-H2O体系研究最为深入.Sb(Ⅲ)与氯的配合物可表达为,主要包括...(Ⅴ) by continuous flow hydride generation-atomic absorption spectrometry[J]. Chemical Speciation & Bioavailability, 1990, 2(3): 117-122. [24] GUNDUZ O. Groundwater contamination mechanism......
Trans. Nonferrous Met. Soc. China 25(2015) 3096-3102 Differential utilization and speciation transformation of orthorhombic α-S8 and amorphous μ-S by substrate-acclimated mesophilic Acidithiobacillus..., Chinese Academy of Sciences, Beijing 100049, China Received 31 October 2014; accepted 9 January 2015 Abstract: The utilization and speciation transformation of α-S8 and μ-S by the typical mesophilic......
chemical fractions also determines the bioavailability of heavy metals [12]. It is, therefore, important to investigate the chemical speciation of heavy metals before and after extraction. Most studies overemphasize the extraction efficiency of total heavy metals. Minimal attention has been paid to the distribution of chemical speciation of heavy metals after extraction with LWMOAs in copper mine......
based on the potential ecological risk index (RI) and risk assessment code (RAC) by modifying an index. The modified index was relevant to the chemical speciation of heavy metals. Xiawan Port, a typical region contaminated by industrial production, was selected as a case study area. The total concentrations and chemical speciation of heavy metals in sediments of Xiawan Port were analyzed......
