Department of Chemical Engineering and Chemical Technology, Imperial College London, South Kensington, London SW7 2AZ, UK.
J Hazard Mater. 2010 May 15;177(1-3):836-41. doi: 10.1016/j.jhazmat.2009.12.109. Epub 2010 Jan 7.
Powdered activated carbon (PAC) was added to an effluent from a submerged anaerobic membrane bioreactor (SAMBR) treating saline wastewater as a post-treatment method. The adsorption of contaminants was carried out and key Freundlich isotherm parameters were evaluated. The results showed a reduction in dissolved organic carbon (DOC) in the effluent of over 80% after treatment with 1.7gPAC/L. The composition of the effluent was determined by the use of size exclusion chromatography (SEC) and by GC-MS analysis. Most of the components of the effluent had a MW less than 1 kDa, and these were the hardest to eliminate by PAC adsorption. m-Aminophenylacetylene, cyclohexane 1,2,4 trimethyl and cholestan 3-one were found in the effluent, but could be removed by PAC adsorption. Finally, different methods for using PAC, with or without biomass, revealed that aerobic biomass enhanced the adsorption process resulting in higher DOC removals.
粉末状活性炭 (PAC) 被添加到处理含盐废水的淹没式厌氧膜生物反应器 (SAMBR) 的流出物中，作为一种后处理方法。进行了污染物的吸附，并评估了关键的 Freundlich 等温线参数。结果表明，在用 1.7gPAC/L 处理后，流出物中的溶解有机碳 (DOC) 减少了 80%以上。通过使用尺寸排阻色谱 (SEC) 和 GC-MS 分析确定了流出物的组成。流出物中的大多数成分的分子量小于 1 kDa，这些成分最难通过 PAC 吸附去除。在流出物中发现了间氨基苯乙炔、环己烷 1,2,4 三甲基和胆甾烷 3-酮，但可以通过 PAC 吸附去除。最后，使用有无生物量的不同 PAC 方法表明，好氧生物量增强了吸附过程，导致更高的 DOC 去除率。
