Table 1 Yield and elementary analysis of EHL, carbon spheres (CSs) and activated carbon spheres (ACSs).

From: Fast preparation of carbon spheres from enzymatic hydrolysis lignin: Effects of hydrothermal carbonization conditions

Samples

Yield (%)

C (%)

O (%)

N (%)

H (%)

EHL-raw

77.5

20.6

0.25

1.65

Hydrothermal Carbonization (CSs)

65.2

88.1

10.4

0.2

1.5

After microwave heating (ACSs)

57.5

95.2

3.5

0.1

1.2