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New technology for comprehensive utilization of aluminum-chromium residue from chromium salts production LI Xiao-bin(李小斌), QI Tian-gui(齐天贵)1, JIANG Xin-min(江新民)1, ZHOU Qiu-sheng(周秋生)1, LIU Gui...; Abstract: Colloidal aluminum-chromium residue(ACR) was mass-produced in chromate......
to HF concentration and particle size is 0.493 8 and -2.013 3, respectively. Key words: leaching; kinetics; hydrofluoric acid; hexavalent chromium; chromite ore processing residue 1 Introduction Chromite ore processing residue (COPR) is a solid residue produced by the so-called high lime process. COPR was classified as a hazardous waste for containing 1%-2% hexavalent chromium (Cr(VI)) [1], which......
J. Cent. South Univ. (2018) 25: 2349-2359 DOI: https://doi.org/10.1007/s11771-018-3919-0 Safe utilization of chromium-bearing vanadate residue by recovery of vanadium and chromium based on calcium..., a novel process is developed for utilization of CVR. Key words: chromium-bearing vanadate residue; NaHCO3; calcium vanadate; calcium chromate; sodium chromate; calcium circulation Cite this article as: LIU......
the adsorption of trivalent chromium (Cr(III)) from aqueous solutions by sugarcane pulp residue (SPR) and biochar. The results show that Cr(III) adsorption by SPR and biochar is highly pH-dependent and Cr...Cr(III) adsorption by sugarcane pulp residue and biocharYANG Zhi-hui(杨志辉)1, XIONG Shan(熊珊)1, WANG Bing(王兵)1, 2, LI Qian(李倩)1, YANG Wei-chun(杨卫春)1(1. National Engineering Research Center for Pollution......
ARTICLE J. Cent. South Univ. (2019) 26: 353-360 DOI: https://doi.org/10.1007/s11771-019-4007-9 Rehabilitation of bauxite residue to support soil development and grassland establishment Ronan..., Changsha 410083, China Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract: Rehabilitation (amendment and vegetation establishment) on bauxite residue......
calculation in the present study. In the process of Cr balance calculation (Table 6), total Cr consists of chromium in sludge and residue Cr in the detoxified slag. The residue Cr could contain a part of Cr... Detoxification of chromium-containing slag by Achromobacter sp. CH-1 and selective recovery of chromium CHAI Li-yuan(柴立元), WANG Yun-yan(王云燕), YANG Zhi-hui(杨志辉), WANG Qing-wei(王庆伟), WANG Hai-ying......
residue (SPR), a waste from sugar-refinery, which possesses a large surface area, can be used for removing chromium (Cr(Ⅲ) and Cr(Ⅵ)) from wastewater. In this work, the kinetics, isotherms of Cr... is to evaluate the removal of Cr(VI) and Cr(III) in aqueous solution by adsorption on sugarcane pulp residue, and to quantify the effect of pH, temperature, chromium concentration, SPR dosage and SPR particle......
曲线测定的影响,并确定了三者的最佳取值；依据峰电位,峰电流密度与扫描速度的关系,研究了体系电极过程的可逆性,发现该电极过程具有明显的不可逆性特征. 关键词:线性电位扫描伏安法；极化曲线；铬渣溶浸液 中图分类号:X 703.1 文献标识码:A Electrode reactive mechanism of chromium residue..., peak current density and scanning speed, it is found that the electrochemical process is irreversible. Key words: linear sweep voltammetry; polarization curve; chromium residue solution ......
ARTICLE J. Cent. South Univ. (2019) 26: 373-382 DOI: https://doi.org/10.1007/s11771-019-4009-7 Physical, chemical, and surface charge properties of bauxite residue derived from a combined process... Nature 2019 Abstract: A detailed understanding of the composition, buffering capacity, surface charge property, and metals leaching behavior of bauxite residue is the key to improved management, both......
Kang, ZHANG Xiao-yun, TIAN Xue-da, YANG Yong-long, CHEN Yan-bo. Leaching of vanadium from chromium residue [J]. Hydrometallurgy, 2010, 103(1–4): 7–11. [12] ZHANG Guo-quan, ZHANG Ting-an, LV Guo-zhi...]. Journal of University of Science and Technology Beijing, 2013(6): 709–713. (in Chinese) [24] PENG Hao, LIU Zuo-hua, TAO Chang-yuan. Selective leaching of vanadium from chromium residue intensified......
