Wastewater treatment high rate algal ponds (WWT HRAP) for low-cost biofuel production.

Abstract:

:Growing energy demand and water consumption have increased concerns about energy security and efficient wastewater treatment and reuse. Wastewater treatment high rate algal ponds (WWT HRAPs) are a promising technology that could help solve these challenges concurrently where climate is favorable. WWT HRAPs have great potential for biofuel production as a by-product of WWT, since the costs of algal cultivation and harvest for biofuel production are covered by the wastewater treatment function. Generally, 800-1400 GJ/ha/year energy (average biomass energy content: 20 GJ/ton; HRAP biomass productivity: 40-70 tons/ha/year) can be produced in the form of harvestable biomass from WWT HRAP which can be used to provide community-level energy supply. In this paper the benefits of WWT HRAPs are compared with conventional mass algal culture systems. Moreover, parameters to effectively increase algal energy content and overall energy production from WWT HRAP are discussed including selection of appropriate algal biomass biofuel conversion pathways.

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Mehrabadi A,Craggs R,Farid MM

doi

10.1016/j.biortech.2014.11.004

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

202-214

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(14)01606-X

journal_volume

184

pub_type

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