Table 1. Reaction conditions for stepwise degradation of algal biomass.

Solution	Condition
20 mmol L-1 di-ammonium oxalate, pH 4 (AmOx)	70°C, 1 h
0.1 mol L-1 NaOH	22°C, 24 h
3 x [4.4 mol L-1 NaOH]	22°C, 8 h
72% H2SO4	22°C, 1 h
Addition of water to 4% H2SO4	100°C, 1h