Ardianto Prasetiyo, Sukarni Sukarni, Retno Wulandari, Aloon Eko Widiono, Heru Suryanto, Uun Yanuhar
The investigation on combustion characteristic and kinetic parameters of Tetraselmis chuii microalgae was carried out under thermogravimetric analyzer. The sample of microalgae has prepared by the Center for Brackish Water Aquaculture (BBPBAP) Jepara, Indonesia. The drying out the water content in the sediment was performed by an oven at temperature 80 °C as long as 24 h. The dry sample then the crushed and followed by sieving to be mesh size of 60. The thermal decomposition of Tetraselmis chuii microalgae was investigated by a thermogravimetric apparatus, in which the 10 mg of sample was heated up in the temperatures range of 25-900 °C with an atmospheric airflow rate of 50 mL/min and a heating rate of 15 °C/min. The mass loss during temperature expansion was recorded by a computer to be a thermogravimetric (TG) graph and used to evaluate the thermal characteristic of the sample. The kinetic parameters were evaluated in the active combustion zone by the Arrhenius method, resulted in the respective values of reaction order (n), logarithmic frequency factor (log A), and activation energy (E) were 1.24, 9.0 min-1 and 101.05 kJ mol-1 for stage II, and 2.38, 33.31 min-1 and 502.88 kJ mol-1 for stage IV. © 2020 Author(s).
Master Program of Mechanical Engineering, Graduate School, State University of Malang, Semarang Street 5, Malang, East Java, 65145, Indonesia; Department of Mechanical Engineering, State University of Malang, Semarang Street 5, Malang, 65145, Indonesia; Centre of Advanced Materials for Renewable Energy, State University of Malang, Semarang Street 5, Malang, 65145, Indonesia; Biotechnology Laboratory, Department of Water Resources Management, Faculty of Fisheries and Marine Sciences, University of Brawijaya, Malang, 65145, Indonesia
