Instituto Multidisciplinario de Biología Vegetal, Área Contaminación y Bioindicadores, Universidad Nacional de Córdoba, CONICET, FCEFyN, Av. Vélez Sársfield 1611, X5016CGA, Córdoba, Argentina.
Instituto Multidisciplinario de Biología Vegetal, Área Fitoquímica, Universidad Nacional de Córdoba, CONICET, FCEFyN, Av. Vélez Sársfield 1611, X5016CGA, Córdoba, Argentina.
Environ Sci Pollut Res Int. 2019 Oct;26(29):30324-30332. doi: 10.1007/s11356-019-06190-y. Epub 2019 Aug 21.
Lead-polluted agricultural soils are a serious problem for food safety, with organic amendment being a promising mitigation method from the environmental perspective. Therefore, the purpose of this study was to evaluate lead availability and the effectiveness of the application of compost of biosolid with wood shavings and yard trimmings in contaminated soils. The physicochemical (Pb distribution, organic matter, pH, electric conductivity, cation exchange capacity, nitrogen, phosphorus, carbon, carbonates, exchangeable cations, sodium) and biological parameters (the microbial activity obtained by fluorescein diacetate hydrolysis) in Pb-polluted and non-polluted agricultural soils were evaluated after the addition of biosolid with wood shavings and yard trimming compost. Topsoils (lead-polluted and control) were collected in the vicinity of a former battery-recycling plant, amended with compost (0%, 5%, and 10%), and incubated in controlled conditions for 118 days. The results showed that lead availability decreased significantly, and the nutritional quality of the soils increased in the soils amended with 10% of compost. Taken together, the results of the present study indicated that compost amendment could be an effective method for mitigating the negative effects of lead in agricultural soils.
受铅污染的农田土壤是食品安全的严重问题，而从环境角度来看，有机肥料是一种很有前景的缓解方法。因此，本研究的目的是评估在受污染土壤中添加木屑和庭院修剪物的生物固体堆肥对铅的有效性和应用效果。在添加木屑和庭院修剪物的生物固体堆肥后，评估了受铅污染和非污染农田土壤的理化特性（Pb 分布、有机质、pH 值、电导率、阳离子交换量、氮、磷、碳、碳酸盐、可交换阳离子、钠）和生物参数（通过荧光素二乙酸水解获得的微生物活性）。在附近的一家旧电池回收厂附近采集了表层土壤（受铅污染和对照），并用堆肥（0%、5%和 10%）进行了改良，并在控制条件下培养了 118 天。结果表明，添加 10%的堆肥可显著降低土壤中铅的有效性，同时提高土壤的营养质量。综上所述，本研究结果表明，堆肥改良可能是缓解农田土壤中铅负面影响的有效方法。
