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Table 6 Total energy input of Harvesting and Downstream processes

From: Integration of biology, ecology and engineering for sustainable algal-based biofuel and bioproduct biorefinery

References

Total energy input (MJ/kg dry algae)

Comments

Campbell et al. (2011)

2.625

Diesel tractor used in harvesting algae

Clarens et al. (2009)

14.79

Harvested via flocculation and centrifugation

Collet et al. (2011)

5.5

Harvested in two steps. Natural settling and centrifugation

Jorquera et al. (2010)

5.17

According to Clarens et al. (2009)

Khoo et al. (2011)

2.73

Air sparging-assisted coagulation flocculation (ASACF) process is used in harvesting

Lardon et al. (2009)

24.08

Low N culture. Harvested via flocculation

Lardon et al. (2009)

23.89

Normal N culture. Harvested via flocculation

Liu and Ma (2009)

3.75

Concentration

Razon and Tan (2011)

35.56

Harvesting process via thickener, microfiltration and bead mill

Yanfen et al. (2012)

41.13

Harvested by sedimentation and centrifugation

Resurreccion et al. (2012)

44.73

OP-FW configuration. Primary dewatering

Resurreccion et al. (2012)

32.44

OP-BSW configuration. Primary dewatering

Frank et al. (2013)

0.23

Harvested by bio-flocculation, dissolved-air flotation, and centrifugation.

Bennion et al. (2015)

12.3

Dewatered via membrane filtration system and centrifugation.

Jorquera et al. (2010)

9.02

According to Clarens et al. (2009)

Resurreccion et al. (2012)

32.04

PBR-FW configuration. Primary dewatering

Resurreccion et al. (2012)

18.26

PBR-BSW configuration. Primary dewatering

  1. According to Ketzer et al. (2018). The total energy input varies with an approximate average of 28 MJ/kg dry algae