焦化废水中溶解性有机物组分的特征分析
Composition characterization of dissolved organic matters in coking wastewater
查看参考文献20篇
文摘
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焦化废水是典型的具有复杂有机质的工业废水,其复杂的有机构成制约了水处理的水质达标,且可能对排入水体构成危害.为了探明其溶解性有机物的组成,采用XAD-8大孔树脂将焦化废水中的溶解性有机物分为亲水性组分(HIS)、疏水酸性组分(HOA)、疏水碱性组分(HOB)和疏水中性组分(HON),分析了各组分的溶解性有机物(DOC)、紫外-可见光谱、色度,并采用GC/MS对各组分中有机物进行定性分析.结果表明,焦化废水中的有机物主要为HIS和HOA组分,其DOC含量分别占总DOC的44.3%和32.4%;焦化废水在200—250 nm和300—400 nm范围内有特征吸收峰,且吸收光强度顺序为HIS>HOA>HON>HOB;焦化废水的色度主要由HOA和HON构成,其在525 nm和436 nm处的吸光度分别占焦化废水吸光度的42.9%(HON)、42.1%(HON)和21.4%(HOA)、15.8%(HOA);焦化废水中亲水性物质主要是苯胺、苯酚、喹啉、异喹啉,疏水酸性物质中主要是各种甲基取代的酚类物质,疏水碱性物质主要是各种胺类和含氮杂环化合物,疏水中性物质主要是吲哚及其衍生物. |
其他语种文摘
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Coking wastewater is the representative wastewater containing various organic pollutants.In order to ascertain the composition,XAD-8 resin was applied to concentrate and isolate the organic compounds in coking wastewater.Dissolved organic matter in coking wastewater was fractionated into four different fractions: hydrophobic acids(HOA),hydrophobic bases(HOB),hydrophobic neutrals(HON) and hydrophilic substances(HIS).Thereafter,the dissolved organic carbon(DOC),ultraviolet-visible(UV) absorption spectroscopy,chroma and the organic component were determined.The DOC values of HIS and HOA showed these two were the main fractions of DOM,comprising 44.3% and 32.4% of the total sample.The characteristic absorption wavelength of coking wastewaater ranged from 200 nm to 250 nm and 300 nm to 400 nm,and the intension order was HIS>HOA>HON>HOB.The chroma of coking wastewater was composed of HOA and HON,and their absorbance at 525 nm and 436 nm contributed 42.9%,42.1% and 21.4%,15.8% of the total.The dominant compounds were aniline,phenol,quinoline and isoquinoline for HIS,various alkyl phenols for HOA,aniline bases and polycyclic nitrogen-containing aromatics for HOB and indole with its ramifications for HON. |
来源
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环境化学
,2012,31(5):702-707 【核心库】
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关键词
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焦化废水
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溶解性有机物
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紫外-可见光谱分析
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色度
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地址
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中国科学院广州地球化学研究所, 广州, 510640
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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0254-6108 |
学科
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行业污染、废物处理与综合利用 |
基金
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国家自然科学基金重点项目
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国家科技支撑计划重点项目
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文献收藏号
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CSCD:4539283
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