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ARTICLE J. Cent. South Univ. (2019) 26: 343-352 DOI: https://doi.org/10.1007/s11771-019-4006-x Isolation of an acid producing Bacillus sp. EEEL02: Potential for bauxite residue neutralization WU... of Limerick, Co. Limerick, Ireland Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2019 Abstract: Bauxite residue deposit area (BRDA) is a typical abandoned mining......
Process of pulse electrodeposition nanocrystalline chromium from trivalent chromium bath HE Xin-kuai(何新快)1, 2, QIU Guan-zhou(邱冠周)1, CHEN Bai-zhen(陈白珍)1, ZHOU Ning-bo(周宁波)1, WU Lu-ye(吴璐烨)2, XU Li... 412008, China Received 15 July 2007; accepted 10 September 2007 Abstract: Nanocrystalline chromium coating was prepared by pulse electrodeposition from trivalent chromium bath containing carboxylate-urea......
through this two-stage roasting method. The chromium residue yielded from this method is quite little, only one third of the product. Moreover, the component of Fe in the residue is as high as 54.28%. Therefore, it can be easily recovered to produce sponge iron, realizing zero-emission of chromium residue.Key words:carbon ferrochrome; potassium chromate; two-stage roasting; chromium residue; zero......
al [15]. Chromium in various chemical forms was extracted as follows: (1) water soluble Cr, 3 g of soil sample extracted with 15 mL of distilled water; (2) exchangeable Cr, the residue from water.../min for 20 min. The supernatant was filtered and then used to analyze the content of chromium, while the residue was added to next extractants. Chromium in each form was determined by flame atomic......
Residue curve maps of ethyl acetate synthesis reactionZHENG Hui-dong(郑辉东), TIAN Hui(田晖), ZOU Wen-hu(邹文虎), HUANG Zhi-xian(黄智贤), WANG Xiao-da(王晓达), QIU Ting(邱挺), ZHAO Su-ying(赵素英), WU Yan-xiang(吴燕翔)(College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou 350108, China)Abstract:The residue curve maps are considered as a powerful tool for the preliminary design of reactive......
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ARTICLE J. Cent. South Univ. (2019) 26: 489-500 DOI: https://doi.org/10.1007/s11771-019-4021-y Chromium detoxification mechanism induced growth and antioxidant responses in vetiver (Chrysopogon... Abstract: This study investigated the chromium (Cr) detoxification mechanism-induced changes in growth and antioxidant defence enzyme activities in Chrysopogon zizanioides. Plant growth decreased by 36.8......
Removing chlorine of CuCl residue from zinc hydrometallurgy by microwave roastingLU Shuai-dan(卢帅丹)1, 2, 3, XIA Yi(夏仡)1, HUANG Chang-yuan(黄昌元)4, WU Guo-qin(吴国钦)4, PENG Jin-hui(彭金辉)1, 2, 3, JU Shao... nowadays, thus much CuCl residue is produced. The existing process of treating this residue is washing with water or sodium carbonate solution, which would cause a lot of troubles to water treatment......
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and transferred into the leaching liquid,whereas almost all of the chromium remained in the leaching residue in the form of(Fe0.6Cr0.4)2O3.Variation trends of the vanadium and chromium leaching ratios... and maintained at this temperature for 60 min,the leaching ratios of vanadium and chromium reached91.14%and 0.49%,respectively;thus,efficient extraction of vanadium from HCVS was achieved and the leaching residue......
