| 矿源黄腐酸的提取工艺研究 |
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| 引用本文： | 李秀颖,叶华,刘变变,王亚龙,杭波. 矿源黄腐酸的提取工艺研究[J]. 腐植酸, 2016, 0(5): 24-27. DOI: 10.3969/j.issn.1671-9212.2016.05.008 |
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| 作者姓名： | 李秀颖 叶华 刘变变 王亚龙 杭波 |
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| 作者单位： | 1. 西安医学高等专科学校医学技术系 西安 710309;2. 陕西省蒲城美尔果农化有限责任公司 渭南 715511 |
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| 摘 要： | 以风化煤和褐煤为试验材料,通过酸提法和碱溶酸析法对黄腐酸提取率的对比,筛选出一种比较有价值的黄腐酸提取方法:混酸氧化提取法。其主要工艺为:风化煤或褐煤∶混酸(硫酸∶硝酸=7∶3)∶自来水=1∶0.3∶6,原料煤中首先加入混酸,搅拌均匀,在70℃条件下氧化40 min,然后加入自来水,60℃搅拌反应1 h,离心分离出黄腐酸清液。此法在黄腐酸含量较低的煤中应用较佳。
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| 关 键 词： | 风化煤 褐煤 腐植酸 黄腐酸 |
Study on the Extraction of Mineral Source Fulvic Acid |
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| Abstract: | In order to screen more valuable method (mixed acid oxidation extraction) of fulvic acid extraction, the fulvic acid production rate was test with the method of acid-extraction and alkali-acid treatment using weathering coal and lignite as experimental material. The ratio of weathering coal or lignite∶mixed acid (sulfuric acid∶nitric acid is 7∶3)∶running water was 1∶0.3∶6. Adding mixed acid in raw coal ifrst and stiring to oxidized for 40 minutes at 70℃, then running water was added to stir reaction for 1 h at 60℃. Finally, fulvic acid supernatant was separated out. This method was better for the coal of low fulvic acid contents. |
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| Keywords: | weathered coal lignite humic acid fulvic acid |
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