2017_EJRNL_PP_Zihuan_Wang_1.pdf
Terbatas Irwan Sofiyan
» ITB
Terbatas Irwan Sofiyan
» ITB
The present study aims to explore the pyrolysis characteristics and gaseous product of municipal sludge
including dry sample (DS) and wet sample (WS). The experiments were performed under atmospheres of
different N2/CO2 ratios using TG-FTIR. All of the thermal process could be divided into two stages. With
the existence of moisture, the releasing of volatiles was enhanced and a large amount of CO2 and NH3
generated earlier. CO2 was inert in first stage and became reactive in second stage. The char gasification
by CO2 resulted in more mass loss and macropores generation. As the CO2 concentration increased, the
corresponding peak shifted to lower temperature. The kinetic parameters were calculated by Coast-
Redfern method and agreed with the pyrolysis properties observed. The activation energy and preexponential
factor increased (or decreased) simultaneously, illustrating kinetic compensation effect.