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Bioconversion of algae to methane and subsequent utilization of digestate for algae cultivation: a closed loop bioenergy generation process.

Abstract：

:The present investigation was targeted on anaerobic digestion of Chroococcus sp. and utilization of resultant "Liquid Digestate" for its further biomass production. The algal biomass has biomethane potential of 317.31 ± 1.9 mL CH4 g(-1) VSfed. Regular process monitoring revealed that process was stable throughout the experiments. The "Liquid Digestate" was explored as nutrient supplement for further algal growth. Diluted "Liquid Digestate" (30% concentration) was found optimal for algal growth (0.79 ± 0.064 g L(-1)). Simultaneously, 69.99-89.31% removal in nutrient and sCOD was also recorded with algal growth. Interestingly, higher growth was observed when rural sector wastewater (1.29 ± 0.067 g L(-1)) and BG11 broth (1.42 ± 0.102 g L(-1)) was used for diluting the "Liquid Digestate". The current findings have practically proven the feasibility of hypothesized "closed loop process".

journal_name

Bioresour Technol

journal_title

Bioresource technology

authors

Prajapati SK,Kumar P,Malik A,Vijay VK

doi

10.1016/j.biortech.2014.02.023

subject

Has Abstract

pub_date

2014-04-01 00:00:00

pages

174-80

eissn

0960-8524

issn

1873-2976

pii

S0960-8524(14)00194-1

journal_volume

158

pub_type

杂志文章

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