Integrated use of sewage sludge and basalt mine waste as soil substitute for environmental restoration
Artico, Maila; Firpo, Beatriz Alicia; Artico, Leonardo Luís; Tubino, Rejane Maria Candiota
REM, Int. Eng. J.
DATA DE PUBLICAÇÃO
Abstract If not managed properly, mining waste can be detrimental to the environment. In addition, sewage treatment plants produce sludge, a biowaste rich in organic matter which is often sent to landfills. The present study evaluated the use of sewage sludge as an amendment for mine waste from a basalt quarry as an alternative to the use of soil from borrow areas during environmental restoration. An ex situ experiment was developed at the Federal University of Rio Grande do Sul - UFRGS. The experimental delineation compared the addition of two sources of organic matter (sewage sludge - SS and cover soil from that same region - CS) to basalt waste rock (BWR) against the sole use of cover soil, which a current restoration technique. The graminoid Avena strigosa (black oats) and soil fertility tests were used as indicators of soil conditions. Amending BWR with SS led to the best physical and chemical conditions and the highest production of dry matter in comparison to the use of CS as amendment or its single use as cover soil. These results show that mixing SS to BWR can be used as a substitute for cover soil during the environmental restoration of basalt quarries, further contributing to the final disposal of these materials.
- Potentiality of Melastoma malabathricum as Phytoremediators of soil contaminated with sewage sludge
- Edaphic Filters and Plant Colonization in a Mine Revegetated with Sewage Sludge
- Composting sewage sludge with green waste from tree pruning
- Degradation of sewage sludge compost disposed on the soil
- Risk simulation of soil contamination by polycyclic aromatic hydrocarbons from sewage sludge used as fertilizers