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Table 2 Properties of biogas upgrading technologies

From: The financial feasibility of compressed biomethane gas application in Thailand

Parameters

WS

AS

PSA

MS

CH4 purity [22]

 > 97%

 > 95%

95–98%

 > 96%

CH4 losses [22]

 > 2%

 < 0.1%

 < 0.1%

0

Power demand (kWh/m3 raw gas) [23]

0.25

0.42

0.25

0.5

Capital expenditures (million baht) [24]

    

3 ton-CBG/day (250 m3-BG/h)

41.5

62.9

44.1

40.7

6 ton-CBG/day (500 m3-BG/h)

59.7

82.2

63.7

60.1

12 ton-CBG/day (1000 m3-BG/h)

85.5

107.4

92.0

88.6

24 ton-CBG/day) (2000 m3-BG/h)

123.3

140.3

133.0

130.6

Operating Expenditures (million baht) [24]

    

3 ton-CBG/day (250 m3-BG/h)

5.1

6.9

9.5

5.4

6 ton-CBG/day (500 m3-BG/h)

8.2

11.9

17.4

9.4

12 ton-CBG/day (1000 m3-BG/h)

13.3

20.6

32.1

16.1

24 ton-CBG/day) (2000 m3-BG/h)

21.6

36.5

59.0

27.7

Volume system [25]

Moderate

Low

Moderate

Lower

Site area [25]

Moderate

Low

Moderate

Low

Skills of operator [25]

Moderate

Moderate

Moderate

High

  1. WS water scrubbing, AS amine-absorption method, PSA pressure swing adsorption, MS membrane separation, BG biogas