skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A Microalgae-Methanotroph Coculture is a Promising Platform for Fuels and Chemical Production From Wastewater

Journal Article · · Frontiers in Energy Research

Wastewater resource recovery facilities are major energy consumers in a community, as well as major contributors for greenhouse gas emission. Although anaerobic digestion is widely employed in wastewater treatment to reduce the amount of solid organic waste and the sludge produced, the use of the produced biogas is mostly limited to heating and electricity generation, while the nutrient rich digestate still requires further treatment. In this work, we propose a waste-to-value platform based on a microalgae-methanotroph coculture, which can convert anaerobic digestion-generated biogas into value-added products, while simultaneously removing nutrients from digestate. The platform takes advantage of the synergistic interactions within a microalgae-methanotroph coculture to achieve significantly improved productivity of microbial biomass and enhanced nutrient recovery performance. Using Chlorella sorokiniana–Methylococcus capsulatus (Bath) as the model coculture, we demonstrate that the coculture offers a highly promising platform for waste-to-value technologies, which can efficiently recover energy (from CH4) and carbon (from both CH4 and CO2) to produce microbial biomass, while removing nutrients from wastewater to produce treated clean water. Compared to microalgae monoculture, the coculture achieved 120% improvement in biomass production, 71 and 164% improvement in total nitrogen and total phosphorous removal, respectively, when the same amount of biogas was provided.

Research Organization:
Auburn Univ., AL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER); US Dept. of Education
Grant/Contract Number:
SC0019181; P200A150074; P200A180002
OSTI ID:
1658656
Alternate ID(s):
OSTI ID: 1714347; OSTI ID: 1856352
Journal Information:
Frontiers in Energy Research, Journal Name: Frontiers in Energy Research Vol. 8; ISSN 2296-598X
Publisher:
Frontiers Research FoundationCopyright Statement
Country of Publication:
Switzerland
Language:
English

References (46)

Photoautotroph-Methanotroph Coculture – A Flexible Platform for Efficient Biological CO2-CH4 Co-utilization journal January 2019
Microalgal-bacterial consortia: From interspecies interactions to biotechnological applications journal February 2020
Environmental and economic assessment of integrated systems for dairy manure treatment coupled with algae bioenergy production journal February 2013
Evaluation of methane-utilising bacteria products as feed ingredients for monogastric animals journal June 2010
Two Experimental Protocols for Accurate Measurement of Gas Component Uptake and Production Rates in Bioconversion Processes journal April 2019
Enrichment, Isolation and Some Properties of Methane-utilizing Bacteria journal May 1970
Bioplastics and their thermoplastic blends from Spirulina and Chlorella microalgae journal June 2013
High productivity cultivation of a heat-resistant microalga Chlorella sorokiniana for biofuel production journal March 2013
Physiological Studies of Methane and Methanol-Oxidizing Bacteria: Oxidation of C-1 Compounds by Methylococcus capsulatus journal January 1971
Bioconversion of natural gas to liquid fuel: Opportunities and challenges journal May 2014
Co-culturing Chlorella minutissima with Escherichia coli can increase neutral lipid production and improve biodiesel quality : Bacteria Can Increase Algal Lipid Production journal July 2015
Microalgal species growing on piggery wastewater as a valuable candidate for nutrient removal and biodiesel production journal January 2013
Microalgal Cultivation in Treating Liquid Digestate from Biogas Systems journal April 2016
Treatment of industrial wastewaters by microalgal bacterial flocs in sequencing batch reactors journal June 2014
Antioxidant systems of moderately thermophilic methanotrophs Methylocaldum szegediense and Methylococcus capsulatus journal December 2009
Performance of Chlorella sorokiniana under simulated extreme winter conditions journal June 2011
Nutrient recovery from industrial wastewater as single cell protein by a co-culture of green microalgae and methanotrophs journal June 2018
Bioconversion of methane to lactate by an obligate methanotrophic bacterium journal February 2016
Improved growth and nutrient utilisation in Atlantic salmon (Salmo salar) fed diets containing a bacterial protein meal journal September 2006
Comparison of nutrient removal capacity and biomass settleability of four high-potential microalgal species journal November 2012
Dual purpose microalgae–bacteria-based systems that treat wastewater and produce biodiesel and chemical products within a Biorefinery journal September 2012
Effect of exogenous carbon sources on removal of inorganic nutrient by the nitrification-denitrification process journal September 1992
Nitrogen Cycles: Past, Present, and Future journal September 2004
The effects of Spirulina platensis meal as a feed supplement on growth performance and pigmentation of rainbow trout (Oncorhynchus mykiss) journal June 2013
Co-cultivation of microalgae and nitrifiers for higher biomass production and better carbon capture journal November 2016
Hydrothermal processing of algal biomass for the production of biofuels and chemicals journal September 2012
Codigestion of Manure and Organic Wastes in Centralized Biogas Plants: Status and Future Trends journal January 2003
Controlling factors for simultaneous nitrification and denitrification in a two-stage intermittent aeration process treating domestic sewage journal March 1999
NITROGEN POLLUTION: Sources and Consequences in the U.S. Northeast journal September 2003
Micro-algae as a source of protein journal March 2007
Rethinking biological activation of methane and conversion to liquid fuels journal April 2014
A flexible microbial co-culture platform for simultaneous utilization of methane and carbon dioxide from gas feedstocks journal March 2017
Hydrothermal Treatment (HTT) of Microalgae: Evaluation of the Process As Conversion Method in an Algae Biorefinery Concept journal December 2011
Potential of microbial-derived nutrients for aquaculture development journal June 2016
Isolation of an indigenous Chlorella vulgaris from swine wastewater and characterization of its nutrient removal ability in undiluted sewage journal November 2017
Anammox brings WWTP closer to energy autarky due to increased biogas production and reduced aeration energy for N-removal journal February 2008
Improved microalgae biomass production and wastewater treatment: Pre-treating municipal anaerobic digestate for algae cultivation conference January 2018
Microalgae and wastewater treatment journal July 2012
Bacteria Grown on Natural Gas Prevent Soybean Meal-Induced Enteritis in Atlantic Salmon journal November 2010
Potential yields and properties of oil from the hydrothermal liquefaction of microalgae with different biochemical content journal January 2011
Anaerobic digestion technology in livestock manure treatment for biogas production: A review: Anaerobic digestion technology in livestock manure treatment for biogas production journal June 2012
Thermochemical Catalytic Liquefaction of the Marine Microalgae Dunaliella tertiolecta and Characterization of Bio-oils journal July 2009
Effect of temperature and pressure on growth and methane utilization by several methanotrophic cultures journal March 1998
Aeration Process in Bioreactors as the Main Energy Consumer in a Wastewater Treatment Plant. Review of Solutions and Methods of Process Optimization journal May 2019
Separation and quantification of microalgal carbohydrates journal December 2012
A review on the state-of-the-art of physical/chemical and biological technologies for biogas upgrading journal September 2015