International Journal of Waste Resources

Soil carbon management in reclaimed compost soil based on sewage sludge

World Congress on Sustainable Waste Management

June 21, 2023 | Webinar

Magdalena Myszura-Dymek

University of Life Sciences in Lublin, Poland

Scientific Tracks Abstracts: Int J Waste Resour

Abstract:

Statement of the Problem: The mining industry puts a lot of pressure on the environment, including removal of native vegetation, loss of biodiversity, environmental pollution, and generation of large amounts of waste, occupation and degradation of large areas of soil. Particularly noteworthy is the devastation of soils, which are the support matrix of terrestrial ecosystems. After mining is completed, degraded land must be rehabilitated to mitigate the destructive effects of mining activities. The aim of the study was to evaluate the subsequent effect of sewage sludge compost (100%) and sewage sludge (70%) with fly ash (30%) on the properties of reclaimed post-mining soil. Methodology & Theoretical Orientation: The plot experiment was set up on land degraded as a result of sulphur extraction. In the experiment, composts were used for fertilization, applied once at a dose of 180 Mg·ha−1. A mixture of grasses was sown on the plots. Soil samples for the tests were collected before plant sowing (beginning of the experiment), after 12, 13 and 14 years of vegetation. Laboratory tests determined total organic carbon (TOC), total nitrogen (TN), Carbon Management Index (CMI): C pool index (CPI), lability index (LI), C lability (L). Findings: In the soil fertilized with composts, the content of TOC and NT was significantly higher than in the control soil. The composts used to fertilize the soil increased the CMI, which had the highest values in the soil fertilized from sewage sludge. Conclusion & Significance: The obtained results showed that the composts had a beneficial effect on the properties of the reclaimed post-mining soil. Taking into account the CMI, it can be concluded that the use of composts in the reclamation of highly acidified soilless lands has a positive effect on the state of soil carbon management, which is conducive to carbon sequestration in the soil.

Biography :

Magdalena Myszura-Dymek, employee of the University of Life Sciences in Lublin. Specialty - soil reclamation. In my scientific work, I researched agricultural soils and soils transformed as a result of anthropogenic activity, including degraded and devastated soils. I study the properties of various types of waste that can be used to improve the quality of both agricultural and degraded soils. I am looking for new solutions aimed at increasing the efficiency of agricultural soils and effective reclamation of degraded soils.