Adsorption on activated carbon is currently the most frequently used technology to remove organic chlorinated pollutants from wastewaters. The present study examines the ability of five commercially available types of activated carbon to remove organic chlorinated compounds from the effluent of a chemical plant. The various types were tested on the basis of Freundlich adsorption isotherms for 14 pure organic chlorinated compounds, of molecular weight ranging from that of dichloromethane (MW¼ 84.93 g mol-1) to hexa-chlorobenzene (MW ¼ 284.78 g mol-1). The best was selected and used in a laboratory fixed-bed column to assess its removal efficiency with respect to the tested organic chlorinated compounds. Removal efficiency was always higher than 90%. These results provide information necessary to optimize scale-up from the pilot plant to the real one.
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机译：活性炭吸附是目前最常用的从废水中去除有机氯污染物的技术。本研究检查了五种商业可用活性炭从化工厂废水中去除有机氯化物的能力。根据Freundlich吸附等温线对14种纯有机氯化物进行了测试，分子量范围从二氯甲烷（MW¼84.93 g mol-1）到六氯苯（MW¼284.78 g mol-1）。选择了最好的，并将其用于实验室固定床色谱柱，以评估其相对于测试的有机氯化化合物的去除效率。去除效率始终高于90％。这些结果提供了必要的信息，以优化从中试工厂到实际工厂的规模放大。
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