Applying raw poultry litter leachate for the cultivation of Arthrospira platensis and Chlorella vulgaris

© 2015 Elsevier B.V. All rights reserved. In the present paper, the use of raw poultry litter (PL) as a nutrient source for the cultivation of Arthrospira platensis and Chlorella vulgaris was investigated. PL was added to acid solution (62.5 mM H2SO4) for the extraction of nutrients contained in PL. After settling, the supernatant, called PL leachate (PLL) was diluted 25×, 20×, 15×, and 10× and used as a mediumfor the cultivation of A. platensis and C. vulgaris. A. platensis could not survive in 15× and 10× diluted leachate andwhile in 20× and 25× dilutions the biomass production was only half of that in a control medium(Zarrouk). The biomass composition had a high carbohydrate content (37-44%),which suggests that A. platensis was stressed due to nutrient limitation. C. vulgaris grew well in PLL-based media and the biomass production was higher than in the control medium (BG-11). Biomass composition of C. vulgaris in PLL-basedmedia had lower protein content and higher carbohydrate and lipid content than in the control medium. The overall process for producing microalgal biomass fromPL thatwe propose includes: (i) acid extraction of nutrients through the generation of PL leachate (PLL), (ii) indoor PL composting and recovery of stripped ammonia and CO2, and (iii) use of recovered ammonia and CO2 along with the PLL for the cultivation of microalgae and cyanobacteria for the production of biomass.

Publication year:2016

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CSS-citation score:2

Authors:International

Authors from:Higher Education