• Title/Summary/Keyword: zinc sulfate

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Recovery of Zine sulfate from zine sulfate waste water contain organic compound (유기물이 포함된 황산아연폐수로부터 황산아연의 회수)

  • Yoon, Guk-Joung;Lee, Tack-Hyuck
    • The Journal of Natural Sciences
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    • v.14 no.2
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    • pp.33-40
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    • 2004
  • The eliminating of organic compound is essential process of the recovery of zinc sulfate from zinc sulfate waste water contained organic compound. The ozone oxidation and adsorption treatment is good for eliminating of organic compound in waste water. The zinc oxide treated an excess of sulfuric acid for zinc sulfate. We got zinc sulfate 740g from water 1kg.

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Effect of the electrolyte composition and the plating condition on the hardness of zinc deposit in the sulfate bath (황산아연욕에서 도금층 경도에 미치는 욕조성 및 도금조건의 영향)

  • 김명수;김영근
    • Journal of the Korean institute of surface engineering
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    • v.33 no.5
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    • pp.356-364
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    • 2000
  • Factors that affect the hardness of the zinc electrodeposits in the sulfate electrolyte were investigated. The hardness of zinc deposit was enhanced by increasing the concentration of impurities such as iron and nickel in the bath that changed the crystallographic orientation of the zinc deposit from the strong basal plane to the random orientation. The increase of the concentration of sodium sulfate and current density in iron contained bath improved the hardness of zinc deposit because those were easily codeposited in zinc layer. However the increase of the concentration of sodium sulfate up to 80g/$\ell$ in the bath darkened the surface of zinc electrodeposits due to change of morphology by the codeposition of iron.

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Study on the Interaction between Depressants Zinc Sulfate and Xanthate on the Flotation of Sphalerite (섬아연석 억제제인 황산아연과 잔세이트의 상호 작용에 관한 연구)

  • KIM, Minkyu;YOU, Kwangsuk
    • Resources Recycling
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    • v.29 no.6
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    • pp.98-103
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    • 2020
  • In this study, the depression behavior of zinc sulfate on the sphalerite with the addition of potassium butyl xanthate was investigated to clear the relationship between zinc sulfate and xanthate in depression of sphalerite. As a result of the experiment, it was confirmed that the depress effect of zinc sulfate on the sphalerite declined with the increase of its addition amount. From the results of SEM-EDS and FT-IR analysis, it was found out that the amorphous precipitate of metal xanthate (Zn-BX) was formed in sphalerite concentrate, when the solubility product of [Zn+]·[BX] in the pulp solution exceeded 3.71×10-11, which is the solubility of Zn-butyl xanthate. It is considered that the Zn-butyl xanthate had a negative effect on the depression of sphalerite.

Studies on the Fluorophotometric Determination of Gentamicin Sulfate and its Preparations (Gentamicin Sulfate의 형광분석법에 관한 연구)

  • 백우현;김정우;허명권;박근창
    • YAKHAK HOEJI
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    • v.22 no.1
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    • pp.15-21
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    • 1978
  • Gentamicin sulfate reacted with pyridoxal and zinc (II) ion in pyridine-methanol solution to yield highly fluorescent zinc(II) chelates of N-pyridoxylidene derivatives. This fluorescence reaction was sensitive and showed excitation maximum at 398nm, and emission maximum at 482nm. The effects of reagent concentration, reaction time and temperature, standing time and temperature were studied. And a new fluorophotometric method for the determination of gentamicin sulfate was developed. A good result was obtained and this method was applied to various preparations.

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Electrochemical Performance of LiMn2O4 Cathodes in Zn-Containing Aqueous Electrolytes

  • Kamenskii, Mikhail A.;Eliseeva, Svetlana N.;Volkov, Alexey I.;Kondratiev, Veniamin V.
    • Journal of Electrochemical Science and Technology
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    • v.13 no.2
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    • pp.177-185
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    • 2022
  • Electrochemical properties of LiMn2O4 cathode were investigated in three types of Zn-containing electrolytes: lithium-zinc sulfate electrolyte (1M ZnSO4 / 2M Li2SO4), zinc sulfate electrolyte (2MZnSO4) and lithium-zinc-manganese sulfate electrolyte (1MZnSO4 / 2MLi2SO4 / 0.1MMnSO4). Cyclic voltammetry measurements demonstrated that LiMn2O4 is electrochemically inactive in pure ZnSO4 electrolyte after initial oxidation. The effect of manganese (II) additive in the zinc-manganese sulfate electrolyte on the electrochemical performance was analyzed. The initial capacity of LiMn2O4 is higher in presence of MnSO4 (140 mAh g-1 in 1 M ZnSO4 / 2 M Li2SO4 / 0.1 M MnSO4 and 120 mAh g-1 in 1 M ZnSO4 / 2MLi2SO4). The capacity increase can be explained by the electrodeposition of MnOx layer on the electrode surface. Structural characterization of postmortem electrodes with use of XRD and EDX analysis confirmed that partially formed in pure ZnSO4 electrolyte Zn-containing phase leads to fast capacity fading which is probably related to blocked electroactive sites.

Morphological Study of the Regeneration of the Mouse Olfactory Epithelial Cells after Destruction by Intranasal Zinc Sulfate Irrigation (코 안 $ZnSO_4$ 점적으로 손상된 마우스 후각 상피세포의 재생에 대한 형태학적 연구)

  • Kang, Wha-Sun;Moon, Young-Wha
    • Applied Microscopy
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    • v.37 no.4
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    • pp.219-230
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    • 2007
  • The morphological effects of intranasal zinc sulfate(5% solution) irrigation on the mouse olfactory epithelium and the regeneration process of olfactory receptor cells following nasal irrigation were studied with scanning and transmission electron microscope. The results were as follows: 1. The septal epithelium except some basal cells was wholly detached from the basement membrane, during the first 6 to 24 hours after 5% zinc sulfate irrigation. 2. 3 days after $ZnSO_4$ treatment, two layered septal epithelium was formed from basal cells. And microvilli were observed in the apical epithelium of newly formed olfactory epithelial cells. 3. 5 days after treatment, a lot of centrosomes and basal bodies were observed in the olfactory receptor cells, and cilia were lined up between microvilli on the apical membrane of olfactory receptor cells. And immature olfactory knob was first observed in the newly formed olfactory receptor cells. Mature olfactory knob was observed 1 week after treatment. 4. There are very many mature olfactory knobs in the olfactory receptor cells 2 weeks after intranasal zinc sulfate irrigation. These results support that treatment with 5% zinc sulfate is a good experimental model for the regeneration of mammalian nervous tissues because this method could thoroughly detach the septal epithelium. During the regeneration of olfactory receptor cells, the surface membrane of the olfactory receptor cells widen the surface with the microvilli. Then cilia, which arranged in a line, substituted for the microvilli. The part of the surface membrane with cilia protruded and finally formed the olfactory vesicle.

Preparation of Flaky α-Al2O3 Crystals by Transition Metal Salts Addition (전이금속염 첨가에 의한 판상 α-Al2O3 결정체 제조)

  • Song, Hyo-Kyung;Park, Byung-Ki;Lee, Jung-Min
    • Journal of the Korean Ceramic Society
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    • v.42 no.6 s.277
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    • pp.384-390
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    • 2005
  • [ ${\alpha}-Al_2O_3$ ] precursor was synthesised by sol-gel method using aluminum sulfate, sodium sulfate and sodium carbonate as law materials. The flaky ${\alpha}-Al_2O_3$ crystals were prepared by heating using precursor about $1,050^{\circ}C$. In this study, the effect of some transition-metal sulfate ($FeSO_4,\;SnSO_4,\;ZnSO_4$) addition have been investigated. When iron sulfate was added, it could see that act on impurities in crystal growth process. In case of tin sulfate, distribution of Platelets was very broad. When flaky ${\alpha}-Al_2O_3$ crystals were prepared zinc sulfate addition, thickness, size, and distribution of platelets was suited to industrial application. The average diameter of flaky ${\alpha}-Al_2O_3$ crystals was about 20 $\mu$m, and its thickness was about 0.3 $\mu$m. Increasing addition of zinc sulfate, thickness of ${\alpha}-Al_2O_3$ platelet was decreased.

Microstructure of zinc electrodeposits in acid sulfate solution (黃酸亞鉛 電解液을 使用한 亞鉛電着層의 顯微鏡 組織)

  • Ye, Gil-Chon;An, Deok-Su;Kim, Yong-Ung
    • Journal of the Korean institute of surface engineering
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    • v.18 no.2
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    • pp.53-60
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    • 1985
  • The microstructure of zine electrodeposits was investigated by using zinc sulfate solution in still bath. The cathode current efficiency decreased with increasing current density, and decreasing temperature. The preferred orientation of the zinc electrodeposits changed from (10.3) texture to(10.${\ell}$)-(00.1)(${\ell}$=1, 2, 3) texture through (10.2)-(10.3) preferred orientation with increasing cathode over potential. The surface morphology of zinc electrodeposits changed from the dendritic growth with granular crystallites to the blocks of hexagonal crystallites packed together with increasing current density. The microstructure of cross section of the above deposits are the rough granular structure and columnar structure respectively.

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A Case of Zinc-Deficient Parakeratotic Hyperkeratosis in a Dog (개에서 발생한 아연 결핍성 부전각화성 과각화증의 증례)

  • 나기정;김기흥;최석화;양만표
    • Journal of Veterinary Clinics
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    • v.14 no.2
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    • pp.361-364
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    • 1997
  • The paper is to report a case of zinc-deficient parakeratotic hyperkeratosis in a dog. In this dermatosis, although an available diagnosis of zinc-deficient dermatosis is to analyse the serum or hair zinc Bevels, exact analysis of zinc is difficult and unreliable due to contamination of zinc by various environmental, physiologic and disease-related factors. Diagnosis may be performed by history, physical examination and blood chemical analysis. Laboratory evaluation revealed hypercholesterolemia and low activities of serum alkaline photophatase and total protein. The dog showed thick crusts at the elbows joint, stifle joint and testis. Zinc sulfate is administered per oral to patient with application of salicylic acid added vaseline ointment on hyperkaratic lesions. The dog is successfully cured.

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Histopathological Changes on the Striated Muscle of Rabbits Fed Zinc, Copper and Linoleic Acid (Zn, Cu 및 Linoleic Acid의 급여(給與)에 의한 가토(家兎) 횡문근(橫紋筋)의 병리조직학적(病理組織學的) 변화(變化))

  • Hu, Min-Do;Lee, Cha-Soo
    • Korean Journal of Veterinary Research
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    • v.23 no.1
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    • pp.69-79
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    • 1983
  • The present studs was undertaken to observe the histopathological changes on the cardiac and skeletal muscles, and liver of rabbits fed a commercial ration, either alone or with supplements of Zinc (3,000mg/kg. of diet, as sulfate), Copper (1,500mg/kg. of diet, as sulfate), Linoleic acid (3% of diet), Zinc with Linoleic acid and Copper with Linoleic acid. In the skeletal muscle, light microscopic changes observed were cloudy swelling, hyaline degeneration, atrophy, fragmentation and coagulative necrosis of muscle fibers, and proliferation of fibroblasts and infiltration of mononuclear cells. Especially, in rabbits fed with supplements of Zinc with Linoleic acid and Copper with Linoleic acid, calcification with muscle fibers progressing to necrosis were often observed. In the myocardium, loss of muscle fibers with necrosis and vacuolization, hyaline degeneration, hemorrhage and congestion were observed. In the liver, congestion and necrosis of hepatocytes, and centrilobular necrosis were observed. Differences of histological changes among the experimental groups was not marked.

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