Tofu Liquid Waste and Buffalo Manure Formulation as an Alternative Medium to Optimize Arthrospira Platensis Growth Rate
Abstract
This study aims to obtain composting data for organic waste by varying the types
of bioactivators and heights of piles as a preliminary study of composting using a tower
composter. The composting process is carried out by entering organic waste into the
composter and adding a bioactivator until the moisture content (MC) of the material reaches
50-60%. During the composting process, MC is controlled under optimal conditions by
adding a bioactivator. The variations in the types of bioactivators used were EM 4 and liquid
fertilizer combined with buffalo dung plus EM 4, while variations in heap heights were
carried out at a height of 90 and 135 cm. The parameters to be analyzed in this study were
moisture content, pH, and C /N ratio. The results showed that compost with a combination of
buffalo dung bioactivator liquid fertilizer added to the best EM4 degradation. The quality of
mature compost for 20 days of composting using bio-activator liquid organic fertilizer from
buffalo dung shows a change in pH 6.5 parameters; MC 50,23% and C/N 12,12. The quality
of the compost ripe for 20 days after composting, bio activator EM 4 showed changes in pH
parameters 7.5; MC 52.36% and C/N 14.38.