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Table 3 Operating parameters and product distribution of pyrolysis papers that were reviewed. Only experimental papers which provided at least two of the table’s parameters are presented here

From: Resource recovery and waste-to-energy from wastewater sludge via thermochemical conversion technologies in support of circular economy: a comprehensive review

Study

Feed moisture content (wt%)

Reactor type

Operating temp (°C)

Gas yield (wt%)

Bio-oil yield (wt%)

Solid yield (wt%)

Trinh et al. [39]

7.3

Centrifuge

425–625

13–19

26–54

22–55

Fonts et al. [59]

6.6

Fluidized bed

250–500

31.7

49.2

19.7

Alvarez et al. [42]

5.6

Conical spouted bed

450–600

 

45.4–48.5

 

Shen et al. [41]

3

Fluidized bed

300–600

 

30

 

Huang et al. [48]

11.79

Microwave

–

 

25.5

 

Xie et al. [49]

4.53

Microwave oven

450–600

 

20.9

 

Zhou et al. [50]

–

Continuous fast microwave

450–600

11–25

16.47–39

32.98–62.26

Pedroza et al. [53]

6

Rotating cylinder

500–600

16–23.3

8–10.5

52.7–61.9

Fonts et al. [47]

6.7

Fluidized bed

530

25

50

25

 

5.3

 

530

37

46

17

 

7.1

 

530

27

51

22

Park et al. [60]

–

Fluidized bed

450–470

6.5–10.3

43.5–52.1

39.7–48.7