Plastic bag as horizontal photobioreactor on rocking platform driven by water power for culture of alkalihalophilic cyanobacterium

• DOI: 10.1186/s40643-017-0176-2
• Publication Date: 2017-11-01T15:14:07Z
• Authors: He Zhu; Chenba Zhu; Longyan Cheng; Zhanyou Chi
• Keywords: Photobioreactor; Algae fuel; Scale-up

Mixing in traditional algae culture system consumes intensive electricity. This should be replaced by nature force to reduce energy cost and, more importantly, realize positive balance of algal biofuel production. study aims develop a horizontal photobioreactor, which mixing can provided with rocking movement driven force. Simple boxes were used as small-scale photobioreactors on platform for alkalihalophilic Euhalothece sp. ZM001. There was no CO2 gas bubbling since 1.0 M NaHCO3 supplied sufficient inorganic carbon it. Effect depth, cycle, and light intensity biomass production, pH change, DO accumulation investigated this system. Biomass concentration 2.73 g/L achieved 2.5 cm maximum productivity 17.06 g/m2/day obtained 10 depth. k L PBR different depths cycles measured, it from 0.57 33.49 h−1, showing great variation. To test at large scale, plastic bag surface area 1 m2 placed water power, resulted 1.88 g/L. These results proved feasibility novel photobioreactor force, well low manufacturing, easy scaling-up.