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Table 1 EROI fossil , net life cycle GHG emissions, and direct WDs for examined biomass production pathways & locations

From: Microalgal biomass production pathways: evaluation of life cycle environmental impacts

Scenarios

A*

B*

C*

D*

E*

F*

G*

H*

WD1

Location

MEA/CF/NGD

MEA/CFP/NGD

DI/CF/NGD

DI/CFP/NGD

MEA/CF/WHD

MEA/CFP/WHD

DI/CF/WHD

DI/CFP/WHD

CFP

CF

Mobile, AL

0.40 (44.2)

0.46 (22.5)

0.49 (18.9)

0.59 (−2.8)

0.60 (−0.4)

0.68 (−15.1)

0.86 (−25.7)

1.04 (−40.4)

22.1

22.3

Phoenix, AZ

0.38 (48.9)

0.43 (28.4)

0.47 (23.5)

0.56 (3.0)

0.57 (4.2)

0.64 (−9.2)

0.79 (−21.2)

0.94 (−34.6)

38.6

38.8

San Diego, CA

0.41 (32.0)

0.46 (16.0)

0.51 (6.3)

0.60 (−9.6)

0.63 (−12.6)

0.69 (−21.5)

0.91 (−38.3)

1.06 (−47.2)

32.8

33.0

Daytona Beach, FL

0.38 (43.0)

0.44 (22.7)

0.47 (17.5)

0.57 (−2.7)

0.58 (−1.6)

0.66 (−14.8)

0.81 (−27.1)

0.97 (−40.2)

24.1

24.3

Jacksonville, FL

0.38 (43.1)

0.44 (22.8)

0.47 (17.7)

0.57 (−2.6)

0.58 (−1.5)

0.66 (−14.7)

0.81 (−27.0)

0.97 (−40.1)

22.6

22.9

Key West, FL

0.38 (43.6)

0.44 (23.4)

0.47 (18.2)

0.57 (−2.1)

0.57 (−1.0)

0.65 (−14.2)

0.80 (−26.4)

0.97 (−39.6)

28.4

28.6

Miami, FL

0.38 (42.7)

0.44 (22.5)

0.48 (17.3)

0.57 (−3.0)

0.58 (−1.9)

0.66 (−15.1)

0.81 (−27.3)

0.98 (−40.5)

22.1

22.4

Tallahassee, FL

0.39 (42.4)

0.44 (22.2)

0.48 (17.0)

0.57 (−3.2)

0.58 (−2.2)

0.66 (−15.4)

0.82 (−27.6)

0.98 (−40.8)

20.8

21.1

Tampa, FL

0.38 (43.2)

0.44 (23.0)

0.47 (17.8)

0.57 (−2.5)

0.58 (−1.4)

0.65 (−14.6)

0.81 (−26.8)

0.97 (−40.0)

25.1

25.4

West Palm Beach, FL

0.38 (43.0)

0.44 (22.7)

0.47 (17.6)

0.57 (−2.7)

0.58 (−1.6)

0.66 (−14.8)

0.81 (−27.0)

0.97 (−40.2)

22.9

23.1

Savannah, GA

0.39 (45.0)

0.45 (23.2)

0.49 (19.7)

0.59 (−2.1)

0.60 (0.4)

0.68 (−14.3)

0.86 (−24.9)

1.03 (−39.6)

24.1

24.4

Baton Rouge, LA

0.39 (39.2)

0.45 (20.8)

0.49 (13.6)

0.58 (−4.7)

0.60 (−5.4)

0.67 (−16.8)

0.86 (−31.0)

1.01 (−42.3)

22.6

22.8

Lake Charles, LA

0.39 (39.0)

0.45 (20.6)

0.49 (13.5)

0.58 (−4.9)

0.60 (−5.6)

0.67 (−16.9)

0.86 (−31.1)

1.02 (−42.4)

23.0

23.2

New Orleans, LA

0.40 (38.9)

0.45 (20.5)

0.49 (13.4)

0.58 (−5.0)

0.60 (−5.7)

0.67 (−17.0)

0.86 (−31.2)

1.02 (−42.5)

22.1

22.3

Austin, TX

0.39 (41.5)

0.45 (20.6)

0.49 (16.1)

0.59 (−4.8)

0.59 (−3.1)

0.68 (−16.9)

0.85 (−28.5)

1.03 (−42.3)

29.8

30.0

Brownsville, TX

0.39 (41.8)

0.45 (20.9)

0.49 (16.4)

0.58 (−4.5)

0.59 (−2.8)

0.68 (−16.6)

0.84 (−28.2)

1.02 (−42.0)

30.6

30.8

Corpus Christi, TX

0.39 (42.1)

0.45 (21.3)

0.48 (16.8)

0.58 (−4.1)

0.59 (−2.5)

0.67 (−16.3)

0.84 (−27.8)

1.02 (−41.7)

29.7

29.9

Houston, TX

0.39 (42.0)

0.45 (21.1)

0.49 (16.7)

0.58 (−4.2)

0.59 (−2.6)

0.67 (−16.4)

0.84 (−27.9)

1.02 (−41.8)

25.6

25.8

Lufkin, TX

0.39 (41.5)

0.45 (20.6)

0.49 (16.1)

0.59 (−4.8)

0.59 (−3.1)

0.68 (−16.9)

0.85 (−28.5)

1.03 (−42.3)

26.1

26.3

Port Arthur, TX

0.40 (35.2)

0.46 (16.9)

0.51 (9.7)

0.60 (−8.6)

0.62 (−9.4)

0.70 (−20.6)

0.91 (−34.9)

1.08 (−46.2)

22.8

23.0

San Antonio, TX

0.39 (41.3)

0.45 (20.4)

0.49 (16.0)

0.59 (−4.9)

0.60 (−3.3)

0.68 (−17.1)

0.85 (−28.6)

1.03 (−42.5)

29.9

30.1

Victoria, TX

0.39 (41.9)

0.45 (21.0)

0.49 (16.5)

0.58 (−4.4)

0.59 (−2.7)

0.68 (−16.5)

0.84 (−28.1)

1.02 (−41.9)

27.4

27.7

  1. MEA monoethanolamine, DI direct injection, CF centrifuge, CFP chamber filter press, NGD natural gas drying, WHD waste heat drying.
  2. * Values in parentheses represent Net Life Cycle GHG Emissions expressed in unit of (g CO2 eq/MJ-Biomass). Values outside of parentheses represent EROIfossil. The last two columns represent water demand (WD).
  3. 1 The results for the WD are presented in units of (liters/MJ-biomass).