KARAKTERISTIK KIMIAWI FLY ASH BATU BARA DAN POTENSI PEMANFAATANNYA SEBAGAI BAHAN PUPUK ORGANIK

Abstract

The purpose of the research was to study the content of chemistry of fly ash and the its potention of fly ash as the matterial of organic fertilizer. The research was conducted by mixing fly ash with some organic matterials with comparison 1:9. The materials that used in this research were 10% of fly ash of PLTU Karang kandri Cilacap, 40% of dusk of ripsaw, 20% of dung of laying pullet, 20% of leguminosa leaves, and 10 % of 'Ares' of banana stalk. All organic fertilizer materials were mixed and done incubation for 3 weeks. The result of analysis was compared to the standard of organic fertilizer quality according to the regulation of Agriculture Department (Permentan) No. 70 year 2011. The result of the research showed that the main composer of fly ash that used was iron (71.2%), silicate (16he ratio of C/N of organic fertilizer which was 24.77. The fertilizer had low content of macro nutri,2%) and alumunium (7.67%).The ph value of the fertilizers which made was alkalis i.e 8.52. T ent i.e total-N (1.36%), total-P (1.13%) and total-K (2.23%).The heavy metal content of the fertilizer was low category, i.e 3.38 pmm of As, 0.53 ppm of Cd, 0.005 ppm of Hg and 8.18 ppm of Pb.