title: Algae mediated treatment and bioenergy generation process for handling liquid and solid waste from dairy cattle farm.
abstract: In the present work four algae were tested for their biomass production potential in neat livestock wastewater. Chroococcus sp.1 was found to be the best for biomass production under controlled (2.13 g L(-1)) and outdoor conditions (4.44 g L(-1)) with >80% of nutrients removal. The produced biomass was then digested with cattle dung as cosubstrate. Interestingly, up to 291.83 ± 3.904 mL CH4 g(-1) VS fed was produced during codigestion studies (C/N ≈ 13.0/1). In contrast to this, only 202.49 ± 11.19 and 141.70 ± 2.57 mL CH4 g(-1) VS fed was recorded with algae (C/N ≈ 9.26/1) and cattle dung (C/N ≈ 31.56/1) alone, respectively. The estimated renewable power generation potential of the investigated coupled process was around 333.79-576.57 kW h d(-1) for a dairy farm with 100 adult cattle. However, further scale-up and testing is needed to make this process a reality.
authors.affiliation: Applied Microbiology Laboratory, CRDT, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110016, India; Biogas Research Laboratory, CRDT, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110016, India. Electronic address: sanjukec@gmail.com.
authors.forename: Sanjeev Kumar
authors.initials: SK
authors.lastname: Prajapati
authors.affiliation: Applied Microbiology Laboratory, CRDT, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110016, India.
authors.forename: Poonam
authors.initials: P
authors.lastname: Choudhary
authors.affiliation: Applied Microbiology Laboratory, CRDT, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110016, India. Electronic address: anushree_malik@yahoo.com.
authors.forename: Anushree
authors.initials: A
authors.lastname: Malik
authors.affiliation: Biogas Research Laboratory, CRDT, Indian Institute of Technology (IIT) Delhi, Hauz Khas, New Delhi 110016, India.
authors.forename: Virendra Kumar
authors.initials: VK
authors.lastname: Vijay
mesh_terms: D000818:Animals; D056804:Biofuels; D057919:Biological Oxygen Demand Analysis; D018533:Biomass; D001709:Biotechnology / Q000379:methods*; D002417:Cattle; D007194:India; D007700:Kinetics; D058751:Livestock; D008697:Methane / Q000096:biosynthesis; D058086:Microalgae / Q000254:growth & development / Q000378:metabolism*; D009584:Nitrogen / Q000302:isolation & purification; D010758:Phosphorus / Q000302:isolation & purification; D058433:Photobioreactors; D012722:Sewage; D062611:Solid Waste; D014874:Water Pollutants, Chemical / Q000302:isolation & purification
chemical_list: D056804:Biofuels; D012722:Sewage; D062611:Solid Waste; D014874:Water Pollutants, Chemical; D010758:Phosphorus; D009584:Nitrogen; D008697:Methane
keywords: Algae; Biomethane; Cattle dung; Codigestion; Livestock wastewater