Nutrient recovery from ethanol co‐products by a novel mycoalgae biofilm: attached cultures of symbiotic fungi and algae. Issue 7 (23rd January 2017)

• Record Type: Journal Article
• Authors: Rajendran, Aravindan; Fox, Tyler; Hu, Bo
• Is Part Of: Journal of chemical technology & biotechnology. Volume 92:Issue 7(2017)
• Page Start: 1766
• Page End: 1776
• Publication Date: 2017-01-23
• Subjects: Mucor circinelloides -- Chlorella vulgaris -- mycoalgae biofilm -- ethanol co‐products -- condensed distillers soluble (CDS); Biotechnology -- Periodicals; Chemistry, Technical -- Periodicals; Chemical engineering -- Periodicals; Industries -- Environmental aspects -- Periodicals; 660
• DOI: 10.1002/jctb.5177
• Languages: English
• ISSNs: 0268-2575

Abstract

Abstract: BACKGROUND: Fungal and algae treatment of food‐industry waste opens a new avenue for valorizing waste to valuable products through the production of desirable cell biomass. A novel mycoalgae biofilm (symbiotic growth of algae and fungi) was developed in ethanol co‐products, the profuse remains from the ethanol distillation process. RESULTS: The mycoalgae biofilm flasks produced more biomass compared with pure fungal cultures under all the conditions tested. The total microbial biomass concentration in mycoalgae biofilm increased from 5.998 g L −1 at 4 d (98.81% fungal biomass and 1.19% algae biomass) to 9.358 g L −1 at 12 d (97.2% fungal biomass and 2.8% algae biomass) with a drop in attached residual solids from 6.304 g L −1 at 4 d to 3.349 g L −1 at 12 d in 10× condensed distillers solubles medium. The high nutrient concentration of P (818 mg L −1 ) and N (924 mg L −1 ) in the samples was recovered in the attached mycoalgae biomass at 55.7% and 74%, respectively, with a reduction in COD of up to 65.6%. CONCLUSION: The results show that ethanol co‐products support excellent mycoalgae biofilm growth. The nutrients in ethanol co‐products can be efficiently recovered and recycled for agricultural applications and better nutrient management. © 2016 Society of Chemical Industry