School of Agricultural Technology, Technological Educational Institute of Crete, Stavromenos, Crete, Greece.
Waste Manag. 2010 Jan;30(1):41-9. doi: 10.1016/j.wasman.2009.08.014. Epub 2009 Sep 23.
The fate and effect of the herbicides linuron and metribuzin on the co-composting of sewage sludge and green waste were addressed in this work. The experiments were conducted in metal cubic containers of 1.0m(3) volume simulating a windrow composting system. A mixture of sludge and green waste was prepared at a ratio of 1:5 v/v. The mixture was split in four equal parts and the two herbicides were added, using a pressure sprayer, as sole or mixed pollutant in each of the three mixtures. The forth mixture was composted without any addition of herbicide, to serve as control. Temperature, physicochemical characteristics, herbicide concentration, carbon dioxide emission, methane emission and microbiological parameters were measured either daily or every time the mixtures were turned, for a period of 80 days. Both herbicides' concentration decreased significantly resulting in removal efficiencies of 99.1-99.7% and 95.8-96.0% for linuron and metribuzin, respectively. Incubation of microbiologically inactive mixtures at a temperature schedule following the spontaneous temperature evolution in the composters resulted in very little (1-11%) decomposition for both herbicides. Comparison of the variation of physicochemical parameters and microbial populations during composting indicated that both herbicides did not affect the composting process.
本研究探讨了除草剂利谷隆和二甲戊乐灵对污水污泥和绿色废物共堆肥的命运和影响。实验在模拟条垛堆肥系统的 1.0m(3)体积金属立方容器中进行。将污泥和绿色废物按 1:5 的体积比混合。将混合物分成四等份，使用压力喷雾器将两种除草剂单独或混合作为污染物添加到其中三种混合物中的每一种中。第四种混合物不添加任何除草剂进行堆肥，作为对照。在 80 天的时间里，每天或每次翻堆时测量温度、理化特性、除草剂浓度、二氧化碳排放、甲烷排放和微生物参数。两种除草剂的浓度均显著下降，利谷隆和二甲戊乐灵的去除效率分别为 99.1-99.7%和 95.8-96.0%。在堆肥器中自发温度演变后的温度方案下培养微生物失活的混合物，两种除草剂的分解率均非常低（1-11%）。比较堆肥过程中理化参数和微生物种群的变化表明，两种除草剂均未影响堆肥过程。
