Comparing effectiveness of compost/biosolids and inorganic amendments for remediation of highly metal contaminated soils
There is a lack of experiments comparing different in situ remediation treatments in the same environmental conditions of metal contaminated soils. We conducted pot studies to test number of soil amendments including composts, biosolids, bentonite, waste limes, phosphate fertilizers, iron oxides and high-Fe or high-clay by-products and wastes. The treatments were tested for several highly Zn/Cd/Pb contaminated soils representing e.g. natural contamination, long-term or short-term contamination by smelter dusts and a long-term proving ground activity. The effects of soil amendments were assessed based on response of various parameters- metals solubility, plant response and microbiological/biochemical activity. Organic treatments (composts and biosolids) were the most effective in increasing the plant yield and reducing phytotoxicity symptoms. Biosotids were less-effective than composts in a very short-term timescale which could have been associated with initial decrease of soil pH after biosolids application. Inorganictreatments (clay minerals, Fe oxides, phosphorus fertilizers and limestones) were not elective as single treatments.
biosolids cadmium composts contamination zinc phytostabilization
G. Siebielec T. Stuczynski R, L. Chaney
Institute of Soil Science and Plant Cultivation, Pulawy, Poland USDA Beltsville, MD, USA
国际会议
第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)
北京
英文
923-924
2007-07-15（万方平台首次上网日期，不代表论文的发表时间）