Laboratoire Traitement et Recyclage des eaux usées, CERTE, Technopole de Borj Cedria, Tunisia.
J Hazard Mater. 2010 Apr 15;176(1-3):99-108. doi: 10.1016/j.jhazmat.2009.11.004. Epub 2009 Nov 10.
A field plots experiment was carried out to assess the effects of repeated application of municipal solid waste compost in comparison to farmyard manure on the accumulation and distribution of trace metals, as well as organic carbon and nitrogen in Tunisian calcareous soil. Compared with untreated soil, the application of the two organic amendments significantly increased the organic carbon and nitrogen contents of the soil. Particle-size fractionations showed that carbon and nitrogen were mainly found to occur in the macro-organic matter fraction (80%). The two organic amendments significantly increased organic carbon in the macro-organic and mineral >150 microm fraction and the 150-50 microm fraction, as well as the organic nitrogen in 150-50 microm and macro-organic fraction. Compared with farmyard manure, municipal solid waste compost significantly increased total Cd, Cu, Pb and Zn contents in the topsoil. These trace metals were mainly present in the macro-organic matter fraction. Significant increases of Cu, Zn and Pb were detected in the 150-50 microm, <50 microm and macro-organic fractions after application of municipal solid waste compost. A significant increase of Cd content was only observed in the 150-50 microm fraction. The trace metals also showed different fractionation patterns when the BCR sequential extraction scheme was applied on untreated and compost-treated soil. The residual fraction was found to be the major fraction, especially for Cu, Cr, Ni and Zn. In contrast, Cd was mainly present in the acid-extractable and reducible fraction, whereas Pb was mainly associated with the reducible fraction.
采用田间小区试验，评估了与厩肥相比，重复施用城市固体废物堆肥对突尼斯钙质土壤中痕量金属以及有机碳和氮积累和分布的影响。与未处理土壤相比，两种有机肥料的施用均显著增加了土壤的有机碳和氮含量。颗粒大小分级表明，碳和氮主要存在于大有机物质级分（80%）中。两种有机肥料显著增加了大有机和矿物＞150μm 级分以及 150-50μm 级分中的有机碳和 150-50μm 和大有机级分中的有机氮。与厩肥相比，城市固体废物堆肥显著增加了表土中总 Cd、Cu、Pb 和 Zn 的含量。这些痕量金属主要存在于大有机物质级分中。施用城市固体废物堆肥后，在 150-50μm、＜50μm 和大有机级分中检测到 Cu、Zn 和 Pb 的含量显著增加。仅在 150-50μm 级分中观察到 Cd 含量的显著增加。当采用 BCR 顺序提取方案对未处理和堆肥处理的土壤进行分析时，痕量金属也表现出不同的分级模式。残渣级分是主要的级分，特别是对于 Cu、Cr、Ni 和 Zn。相比之下，Cd 主要存在于可提取酸和可还原级分中，而 Pb 主要与可还原级分相关。
