Amelioration of acidic soil using fly Ash for Mine Revegetation in Post-Mining Land

Abstract This paper described the use of fly ash for soil amelioration acidic soils to promote plant growth. In mining sites, acid sulfate soils/rocks, which contain sulfide minerals (e.g. pyrite FeS 2 ), have appeared as a result overburden excavation. The excessively condition inhibits growth due dissolution harmful elements, such Al, Fe, and Mn. Fly ash, an alkaline byproduct coal combustion generated in thermal power plants is expected be adopted ameliorate soils. However, mixing ratio must considered because excessive addition can negative impact on its physical/chemical properties. pot trials using Acacia mangium demonstrate evolution with 5%–10% into soil. When has high potential metal dissolution, ions leached from are large, making it difficult improve osmotic ionic stress. work suggests that effects