期刊名称：Universitatea Politehnica din Timisoara. Buletinul Stiintific. Seria Chimie si Ingineria Mediului
印刷版ISSN：1224-6018
出版年度：2007
卷号：52(66)
期号：01-02
出版社：Universitatea Politehnica din Timisoara
摘要：Solid residues from the galvanizing industry, called galvanizing sludges, having a high heavy metal content, pH = 9-10 and relative humidity of about 70,82 %. These sludges are toxic, and cannot be deposited beside the urban wastes, and so, there are various possibilities studied for their reprocessing as useful materials: electrochemical recovery, filling materials, etc. In the paper there were some possibilities studied, in order to embed the galvanizing sludges, from S.C. Westmetal S.R.L., in construction materials like: bricks, pavements, concrete plates, etc. The composition of each concrete mixture was studied using Bruker D8 Advance X-Ray Diffractometer). The metal’s bonding degree was analyzed during several days, by immersing the samples (shaped like cubes) into water, simulating this way their exposure to repeated, torrential rain. Periodically, the metals concentrations was determined using a novAA 400 G atomic absorption spectrophotometer, equipped with MP60 autosampler, specialized software, WinAAS, for continuous data processing.
