Effect of Particle Size and Background Natural Organics on the Adsorption Efficiency of PAC
Effect of Particle Size and Background Natural Organics on the Adsorption Efficiency of PAC
复制标题
粒径和背景天然有机物对 PAC 吸附效率的影响
DOI：
10.1002/j.1551-8833.1990.tb06907.x
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发表时间：
1990
影响因子：
--
通讯作者：
Y. Richard
中科院分区：
文献类型：
--
作者：
I. Najm;V. Snoeyink;M. Suidan;Chung;Y. Richard
本研究的目的是确定粉末活性炭（PAC）对一种典型的合成有机化学品的吸附效率，评估颗粒尺寸和背景器官的重要性，并开发一种程序来预测PAC的性能。结果表明，性能可以显着提高使用较小尺寸的PAC，但吸附率和PAC容量显着降低时，天然存在的腐殖物质存在于地下水中。通过运行平衡和闭批动力学测试，确定平衡和动力学常数，并使用一个方程来确定任何接触时间的PAC的去除效率，在连续搅拌釜式反应器中的PAC的痕量有机物的去除的准确预测。许多合成有机化学品通过径流（SOC）（包括挥发性有机废物排放）或化学品泄漏来供水。颗粒活性炭（GAC）是感兴趣的，因为它们通常在固定床吸附器中用于致突变性、致癌性和毒性去除SOC和有机化合物活性的潜力。这些化合物进入饮用水，导致气味问题。利用率图1.粒径对TCP在PAC 1上吸附等温线的影响
The objectives of this study were to determine the efficiency of adsorption of powdered activated carbon (PAC) for a typical synthetic organic chemical, to evaluate the importance of particle size and background organ& and to develop a procedure to predict the performance of PAC. Results showed that performance can be significantly improved by using smaller-size PAC but that the rate of adsorption and PAC capacity are markedly reduced when naturally occurring humic substances are present in the groundwater. Accurate predictions of the removal of trace organics by PAC in a continuously stirred tank reactor were made by running equilibrium and closed-batch kinetic tests, determining equilibrium and kinetic constants, and using an equation to determine the removal efficiency of the PAC for any contact time. Many synthetic organic chemicals water supplies by water runoff, through (SOCs), including the volatile organic waste discharge, or by chemical spills. chemicals (VOCs), in drinking water are Granular activated carbon (GAC) is of interest because of their potential commonly used in fixed-bed adsorbers to mutagenicity, carcinogenicity, and tox- remove SOCs and organic compounds icity. These compounds enter drinking that cause odor problems. The utilization Figure 1. Effect of particle size on the adsorption isotherm for TCP on PAC 1