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

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• 作者：Giorgos Markou^a ; ^b ; ^{markoug@aua.gr" class="auth_mail" title="E-mail the corresponding author} ; ^{markougior@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Dimitris Iconomou^c ; Koenraad Muylaert^d
• 关键词：Biomass ; Cyanobacteria ; Microalgae ; Poultry litter ; Wastewater
• 刊名：Algal Research
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：13
• 期：Complete
• 页码：79-84
• 全文大小：617 K

文摘

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 medium for the cultivation of A. platensis and C. vulgaris. A. platensis could not survive in 15 × and 10 × diluted leachate and while 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-based media had lower protein content and higher carbohydrate and lipid content than in the control medium. The overall process for producing microalgal biomass from PL that we 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.