| 化学实验中含铬废水的处理研究 |
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| 引用本文： | 蒋海明,张敏.化学实验中含铬废水的处理研究[J].零陵学院学报,2004(5). |
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| 作者姓名： | 蒋海明 张敏 |
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| 作者单位： | 零陵学院生命科学与化学工程系，零陵学院生命科学与化学工程系 湖南 永州 425006，湖南 永州 425006 |
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| 基金项目： | 零陵学院院级教学改革重点资助 |
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| 摘 要： | 将含铬废液浓缩后,在弱碱性条件下将沉淀过滤。沉淀在酸性条件下加热溶解氧化后再次过滤除出沉淀,两次 滤液合并。用稀硫酸调节到PH=2,蒸发水并冷却到室温结晶,再经重结晶提纯得到产品重铬酸钾,经分析,产品纯度达96％ 以上。
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| 关 键 词： | 含铬废液 重铬酸钾 废物回收 综合利用 |
A dispositive research of waste water contained with Chromium in Chemistry experiment |
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| Authors: | JIANG Hai-ming ZHANG Min |
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| Abstract: | After concentrating the waste liquid contained with Chromium, filtrate the sediment under weal alkalinity condition and the sediment should be filtrated again and under the acid condition after legating, dissolving and oxidizing. Combine and regulate the filtrate with dilute H2SO4 to get the PH=2. Then evaporate and cool the liquid to room temperate and get the crystallization, the after recrystallizing, get the Dichromate-potassium with its purity exceed 96% by analysis. |
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| Keywords: | waste liquid contained with Chromium Dichromate-potassium refuse recycling comprehensive utilization |
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