Faculty of Health Sciences, University of Ljubljana, Zdravstvena pot 5, Ljubljana, Slovenia.
Faculty of Civil and Geodetic Engineering, University of Ljubljana, Jamova cesta 2, Ljubljana, Slovenia.
Environ Sci Pollut Res Int. 2024 Apr;31(20):29280-29293. doi: 10.1007/s11356-024-33041-2. Epub 2024 Apr 4.
Due to its fibrous structure and high water holding capacity, rock mineral wool (RMW) has boosted the development of hydroponics. Consequently, the amount of waste RMW has also increased tremendously, which has stimulated the research and development of RMW reuse options. In this study, composting and degradability of RMW from hydroponics (gRMW) were tested in combination with different ratios of biowaste compost, including physical and chemical properties of the starting and final materials, and potential ecological hazards of the final product. gRMW had high water holding capacity and low organic matter content, which was easily degradable. Limits of toxic elements according to EU regulation were not exceeded. Degraded gRMW mixtures with compost did not exhibit toxicity to plants or aquatic bacteria and showed intermediate or limited habitat function for earthworms, which preferred the sole gRMW not mixed with compost. Overall, degraded gRMW exhibited parameters of safe soil amendment.
由于其纤维结构和高持水能力，岩石矿物棉（RMW）促进了水培技术的发展。因此，废弃的 RMW 数量也大幅增加，这刺激了对 RMW 再利用选择的研究和开发。在这项研究中，结合不同比例的生物废物堆肥，测试了水培用 RMW（gRMW）的堆肥和可降解性，包括起始和最终材料的物理和化学性质，以及最终产品的潜在生态危害。gRMW 具有高持水能力和低有机物含量，易于降解。欧盟法规规定的有毒元素限量没有超标。与堆肥混合的降解 gRMW 混合物对植物或水生细菌没有表现出毒性，并且对蚯蚓具有中间或有限的生境功能，蚯蚓更喜欢单独的 gRMW 而不是与堆肥混合。总体而言，降解的 gRMW 表现出安全土壤改良剂的参数。
