Polydisperse Adsorption Characteristics of Aqueous Organic Matrices in Water and Wastewater Sources
Polydisperse Adsorption Characteristics of Aqueous Organic Matrices in Water and Wastewater Sources
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水和废水源中水性有机基质的多分散吸附特性
DOI：
10.1007/s10450-005-6008-2
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发表时间：
2005
期刊：
影响因子：
3.3
通讯作者：
Eun
中科院分区：
文献类型：
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作者：
Fusheng Li;A. Yuasa;Y. Matsui;Eun
使用 DOC 和 UV260 的集总质量指数测量来自河水、地下水、废水和商业来源的 14 种溶解有机基质 (DOM) 的批量吸附等温线，并使用分布式假想成分法进行分析。通过考虑具有 FreundlichK 对数正态分布的 DOM 成分的异质性，每个 DOM 的吸附平衡仅通过搜索三个参数来表征。 FreundlichK 的分布范围存在显着差异，表明吸附能力对 DOM 的来源和类型有很强的依赖性。与 K 范围为 10.8–190 (mg/g)/(mg/l)1/n 的河水 DOM 相比，商业腐植酸的异质性最强：K 范围为 0.01–1494.3 (mg/g)/(mg/l)1/n。此外，根据使用 HPSEC 系统对所有 DOM 吸附前后的色谱结果进行测量，发现商业腐植酸优先吸附小分子量成分；然而，对于水生有机基质，没有发现这种趋势。
Batch adsorption isotherms of fourteen dissolved organic matrices (DOMs) from river water, ground water, wastewater and commercial sources were measured using lumped quality indices of DOC and UV260, and analyzed using a distributed fictive component method. By accounting for the heterogeneity of DOM constituents with a log-normal distribution of FreundlichK, the adsorption equilibrium of each DOM was characterized by searching for only three parameters. Indicating strong adsorbability dependency upon the sources and types of DOMs, the distribution ranges of the FreundlichKdiffered markedly. Compared to a river water DOM that had aKrange in 10.8–190 (mg/g)/(mg/l)1/n, a commercial humic acid was found most heterogeneous:Kvaried in 0.01–1494.3 (mg/g)/(mg/l)1/n. In addition, based upon chromatographic results measured using a HPSEC system for all DOMs before and after adsorption, preferential adsorption of small molecular weight constituents was revealed for commercial humic acids; for aquatic organic matrices, however, such a trend was not found.