Gutiérrez-Segura E, Colín-Cruz A, Fall C, Solache-Ríos M, Balderas-Hernández P
Facultad de Química, Universidad Autónoma del Estado de México, Paseo Colón y Tollocan s/n., C.P. 50000, Toluca Estado de México, Mexico.
Environ Technol. 2009 Apr 14;30(5):455-61. doi: 10.1080/09593330902767834.
The sorption behaviour of Cd and Pb from aqueous solutions in columns, using both commercial activated carbon and a carbonaceous material from pyrolysis of sewage sludge, was determined. The breakthrough data obtained for Cd and Pb sorption could be described by the linear form of the Thomas adsorption model. The breakthrough capacities found from column studies were different for each metal and the data reflect the order of metal affinity for the adsorbents materials. The adsorption capacity of the carbonaceous material was higher for cadmium than for lead in a single system and in binary systems, and, for activated carbon, the sorption capacities of lead and cadmium were similar in the binary system. The results indicated that the carbonaceous material from pyrolysis of sewage sludge is a better adsorbent than activated carbon of cadmium and lead.
研究了使用商业活性炭和污水污泥热解产生的碳质材料从柱中的水溶液中吸附镉和铅的行为。镉和铅吸附的穿透数据可用托马斯吸附模型的线性形式来描述。柱研究得出的穿透容量因每种金属而异，数据反映了金属对吸附剂材料的亲和顺序。在单一体系和二元体系中，碳质材料对镉的吸附容量高于对铅的吸附容量，而对于活性炭，在二元体系中铅和镉的吸附容量相似。结果表明，污水污泥热解产生的碳质材料比活性炭对镉和铅具有更好的吸附性能。
