Reference

Recovery of tellurium from anode sludge in sodium tellurite electrolysis

Recovery of tellurium from anode sludge in sodium tellurite electrolysis. Segawa, Tsutomu; Manabe, Yoshiaki; Furumi, Hiroshi (Sumitomo Metal Mining Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 62007609 A2 14 Jan 1987 Showa, 3 pp. (Japan) CODEN: JKXXAF. CLASS: ICM: C01B019-02. APPLICATION: JP 85-146248 2 Jul 1985. DOCUMENT TYPE: Patent CA Section: 49 (Industrial Inorganic Chemicals) The anode sludge from the electrolysis of Na2TeO3 soln. is treated with mineral acid and the solid and liq. are sepd. Then alkali soln. is added to the liq. and mixed with Na2SO3 at 0.7-1.5 times the wt. of Te content in the liq. while maintaining pH 2-8. Te is recovered in as ppt. Thus, 1 kg slurry contg. Te 42.2, Se 0.03, Pb 0.03 wt. 10102-20-2 and 1310-73-2 are also in the experiment.%, and balance of H2O and Na was mixed with 0.5 72 wt.% H2SO4 and 2.7-4.6 L deionized H2O, reacted for 1 h and filtered. The filtrate was adjusted to 4.0 pH with NaOH soln., mixed with Na2SO3 at 0.7 wt. times of its Te content to form ppt. The recovery of Te was 99.4%. .

Spectral properties of fresh and frozen-thawed cells of Spirulina maxima under tellurium (IV) stress

All Rights Reserved. Spectral properties of fresh and frozen-thawed cells of Spirulina maxima under tellurium (IV) stress. Yang, Fang; Tu, Fang; Bai, Yan; Zheng, Wen-Jie (Institute of Aquatic Biology, Jinan University, Guangzhou 510632, Peop. Rep. China). Guangpu Shiyanshi, 23(4), 842-846 (Chinese) 2006 Kexue Chubanshe. CODEN: GUSHEH. ISSN: 1004-8138. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) Section cross-reference(s): 10 The spectral properties of fresh and frozen-thawed cells of Spirulina maxima under Te (IV) stress were studied. The absorption spectra showed that the peak intensity of cells under Te (IV) stress decreased greatly. For the frozen-thawed cells, the peak of phycocyanin became the max. peak, and the intensity decreased with the increase of Te (IV) concn. 13494-80-9 and 10102-20-2 are also in the experiment. The results indicated that the damage of phycocyanin was the most serious under high concn. of Te (IV) stress. The fluorescence spectrum showed that the position of peaks had no shift, but the intensity decreased dramatically, indicating that the pigments of Spirulina maxima were damaged greatly under high concn. of Te (IV) stress. The fluorescence spectrum of frozen-dried powder of frozen-thawed cells showed that no emission peaks could be obsd. .