Laboratory of Solid and Hazardous Waste Management, Dept. of Environmental Engineering, Democritus University of Thrace, GR-67100 Xanthi, Greece.
Sci Total Environ. 2011 Jun 1;409(13):2555-66. doi: 10.1016/j.scitotenv.2011.02.044. Epub 2011 Apr 13.
The objective of this work was to investigate the potential transfer of 9 heavy metals from spent household batteries (zinc-carbon and alkaline-manganese batteries) to the organic fraction of municipal solid wastes during active composting. Six runs were performed including one control and 2 replications. Eleven types of alkaline and non-alkaline batteries were added at 3 different levels to the organic fraction of municipal solid wastes, namely at percentages equal to 0.98% w/w (low), 5.2% w/w (medium) and 10.6% w/w (high). Experiments were performed in 230 l insulated plastic aerobic bioreactors under a dynamic air flow regime for up to 60 days. Iron, copper and nickel masses contained in the organic fraction of the wastes were found significantly higher in the high level runs compared to the corresponding masses in the control. No metal transfer was obtained in the low and medium level runs. Metal mass balance closures ranged from 51% to 176%. Metals' concentrations in the leachates were below 10 mg l⁻¹ for most metals, except iron, while an increasing concentration trend versus time was measured in the leachates of the high level runs. In all cases, the contents of 5 regulated heavy metals in all end products were below the Hellenic limits.
本工作旨在研究在活性堆肥过程中，废旧家用电池（锌碳电池和碱性锰电池）中的 9 种重金属向城市固体废物有机部分转移的潜力。共进行了 6 次运行，包括 1 次对照和 2 次重复。将 11 种碱性和非碱性电池以 3 种不同水平添加到城市固体废物的有机部分，即分别为 0.98%w/w（低）、5.2%w/w（中）和 10.6%w/w（高）。实验在 230 升绝缘塑料好氧生物反应器中进行，在动态空气流量下进行，最长可达 60 天。与对照相比，高浓度运行中废物有机部分所含的铁、铜和镍质量明显更高。在低浓度和中浓度运行中没有金属转移。金属质量平衡闭合率在 51%至 176%之间。大多数金属的浸出液中金属浓度低于 10mg/L，除铁外，高浓度运行浸出液中的浓度随时间呈上升趋势。在所有情况下，所有最终产物中 5 种受监管的重金属含量均低于希腊限值。
