| dc.description.abstract | Increased utilization of energy causes a need to produce alternative energy, for example coal. Coal combustion produces fly ash that contains of major and trace elements such as Ca, Mg, K, Na, P, Fe, Cu, Zn, Mn and also has advantage as soil ameliorant. The purpose of this research was to study the soil chemical characteristics that might impacted by fly ash accumulation at PLTU Suralaya. The 13 samples of soil has been taken close to (± 10 meters) and outside (± 1 kilometers) the landfill. The soil analyzes consisted of pH, Cation Exchangable Capacity (CEC), C-organic, base elements and base saturation, total and avalaible P, total N, Electric Conductivity (EC), texture, trace elements, and heavy metals. Generally, the characteristics of soil were had little differences. The value of pH in close to landfill soil (5,41-5,64) was higher than in outside (5,29-5,77), as same as the EC value in close to landfill (0,033-0,49 dS/m) was higher than the outside (0,016-0,048 dS/m). The concentration of base elements in close to landfill soil (Ca = 6,87-8,48 cmol/kg, Mg = 2,89-3,96 cmol/kg, K = 0,47-0,71 cmol/kg, Na = 0,39-0,47 cmol/kg) were higher than the outside (Ca = 5,85-8,56 cmol/kg, Mg = 2,30-2,81 cmol/kg, K = 0,17-1,43 cmol/kg, Na = 0,29-0,60 cmol/kg), it’s equal with the CEC value in close to landfill soil (15,14-18,04 cmol/kg) that was higher too than the outside (10,95-15,14 cmol/kg). The C-organic value (1,83-2,41%) and the avalaible of P (13,03-28,94 ppm) in close to landfill soil were higher than C-organic (0,88-1,85%) and avalaible of P value (13,65-19,26 ppm) in the outside. Whereas, the base saturation (67,53-82,01%) and total phospore (27,33-38,33 ppm) in close to landfill soil were lower than the outside base saturation (70,43-97,06%) and total phospor (30-43,67 ppm). The total N at two locations were similar. Trace elements within the close to landfill (Fe = 5,37-6,28%, Mn = 0,20-0,24%, Cu = 7,30-8,60 ppm) were lower than the outside (Fe = 6,09-7,72%, Mn = 0,15-0,27%, Cu = 7-9 ppm). But, the Zn element (36-38,5 ppm) was higher in close to than in the outside landfill (18,6-32,3 ppm). The existing of heavy metals in close to landfill (Cr = 1-1,5 ppm, Ni = 0,5-1 ppm) were lower than in the outside (Cr = 1-2,5 ppm, Ni = 1-3 ppm), the texture were same, clay. | en |
