Energy return on investment for algal biofuel production coupled with wastewater treatment

Colin M. Beal, Ashlynn S. Stillwell, Carey W. King, Stuart M. Cohen, Halil Berberoglu, Rajendra P. Bhattarai, Rhykka L. Connelly, Michael E. Webber, Robert E. Hebner

Research output: Contribution to journalArticle

Abstract

This study presents a second-order energy return on investment analysis to evaluate the mutual benefits of combining an advanced wastewater treatment plant (WWTP) (with biological nutrient removal) with algal biofuel production. With conventional, independently operated systems, algae production requires significant material inputs, which require energy directly and indirectly, and the WWTP requires significant energy inputs for treatment of the waste streams. The second-order energy return on investment values for independent operation of the WWTP and the algal biofuels production facility were determined to be 0.37 and 0.42, respectively. By combining the two, energy inputs can be reduced significantly. Consequently, the integrated system can outperform the isolated system, yielding a second-order energy return on investment of 1.44. Combining these systems transforms two energy sinks to a collective (second-order) energy source. However, these results do not include capital, labor, and other required expenses, suggesting that profitable deployment will be challenging.

Original languageEnglish (US)
Pages (from-to)692-710
Number of pages19
JournalWater Environment Research
Volume84
Issue number9
DOIs
StatePublished - Sep 2012
Externally publishedYes

Fingerprint

Carrier State
Biofuels
Waste Water
energy
wastewater
biofuel
Ammotherapy
Acanthosis Nigricans
Traffic Accidents
Middle Ear
Algae
Removal
Economics
Food
transform
labor
alga
nutrient

Keywords

  • Algae
  • Algal biofuel production
  • Biofuel
  • Biological nutrient removal
  • Energy balance
  • Energy return on investment
  • Synergy
  • Wastewater treatment

ASJC Scopus subject areas

  • Environmental Chemistry
  • Water Science and Technology

Cite this

Beal, C. M., Stillwell, A. S., King, C. W., Cohen, S. M., Berberoglu, H., Bhattarai, R. P., ... Hebner, R. E. (2012). Energy return on investment for algal biofuel production coupled with wastewater treatment. Water Environment Research, 84(9), 692-710. DOI: 10.2175/106143012X13378023685718

Energy return on investment for algal biofuel production coupled with wastewater treatment. / Beal, Colin M.; Stillwell, Ashlynn S.; King, Carey W.; Cohen, Stuart M.; Berberoglu, Halil; Bhattarai, Rajendra P.; Connelly, Rhykka L.; Webber, Michael E.; Hebner, Robert E.

In: Water Environment Research, Vol. 84, No. 9, 09.2012, p. 692-710.

Research output: Contribution to journalArticle

Beal, CM, Stillwell, AS, King, CW, Cohen, SM, Berberoglu, H, Bhattarai, RP, Connelly, RL, Webber, ME & Hebner, RE 2012, 'Energy return on investment for algal biofuel production coupled with wastewater treatment' Water Environment Research, vol 84, no. 9, pp. 692-710. DOI: 10.2175/106143012X13378023685718
Beal CM, Stillwell AS, King CW, Cohen SM, Berberoglu H, Bhattarai RP et al. Energy return on investment for algal biofuel production coupled with wastewater treatment. Water Environment Research. 2012 Sep;84(9):692-710. Available from, DOI: 10.2175/106143012X13378023685718

Beal, Colin M.; Stillwell, Ashlynn S.; King, Carey W.; Cohen, Stuart M.; Berberoglu, Halil; Bhattarai, Rajendra P.; Connelly, Rhykka L.; Webber, Michael E.; Hebner, Robert E. / Energy return on investment for algal biofuel production coupled with wastewater treatment.

In: Water Environment Research, Vol. 84, No. 9, 09.2012, p. 692-710.

Research output: Contribution to journalArticle

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