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181.
R. Barna Z. Rethy Y. Perrodin P. Moszkowicz L. Tiruta-Barna 《Waste management (New York, N.Y.)》2000,20(8)
The reuse of waste materials requires the development of assessment methods for the long-term release of pollutants (source term) from wastes (or materials containing wastes) in contact with water. These methods depend on the scenario conditions: characteristics of the materials (especially physical structure and composition), contact with water… The scenario studied here is a water storage reservoir for fire extinguishing. The reservoir construction is made of a mixture of hydraulic binders and air pollution control (APC) residues from municipal solid waste incinerator (MSWI). The modelling of the source term is performed in five steps ranging from the physico-chemical characterisation of the material to the validation of the proposed model by means of field simulation devices. This paper follows a first publication on source term modelling using laboratory tests which therefore concerns the comparison of the results obtained with the previously established model. The first laboratory scale simulation test aims at taking into account the role of the leachate carbonation in the leaching behaviour of the studied material. The results obtained show that air carbonation of the leachate does not fundamentally change mass transfer mechanisms of easily soluble species (especially for alkaline metals). For these species, the use of the apparent diffusional model (model proposed in the previous paper) is, therefore, at first, a satisfactory solution for the prediction of long term leaching behaviour. The field scale test enables us to validate and calibrate the release model determined on a laboratory scale basis. 相似文献
182.
用金矿废渣样品进行氰化物的浸提试验,对浸提剂的pH值、浸提次数等条件进行优化。经实际样品验证,确定pH值〉12的碱性水溶液为最佳浸提剂,浸出液中易释放氰化物和总氰化物可用硝酸银滴定法或异烟酸一巴比妥酸分光光度法测定,方法检出限分别为0.25mg/L、0.001mg/L,加标回收率为90.0%~92.0%,测定结果的RSD〈8%。 相似文献