title: Phycoremediation and biogas potential of native algal isolates from soil and wastewater.
abstract: The present study is a novel attempt to integrate phycoremediation and biogas production from algal biomass. Algal isolates, sp. 1 and sp. 2, obtained from wastewater and soil were evaluated for phycoremediation potential and mass production. The estimated yield was 58.4 sp. 1 and 54.75 sp. 2 tons ha(-1) y(-1). The algal isolates reduced COD by >70% and NH3-N by 100% in unsterile drain wastewater. Higher productivities of sp. 1 (1.05 g L(-1)) and sp. 2 (0.95 g L(-1)) grown in wastewater compared to that grown in nutrient media (0.89 g L(-1) for sp. 1 and 0.85 g L(-1) for sp. 2) indicate the potential of algal isolates in biogas production through low cost mass cultivation. Biogas yield of 0.401-0.487 m(3) kg(-1) VS added with 52-54.9% (v/v) methane content was obtained for algal isolates. These results indicate the possibilities of developing an integrated process for phycoremediation and biogas production using algal isolates.
authors.affiliation: Centre for Rural Development and Technology, Indian Institute of Technology, Delhi, Hauz Khas, New Delhi 110016, India. sanjukec@gmail.com
authors.forename: Sanjeev Kumar
authors.initials: SK
authors.lastname: Prajapati
authors.forename: Prachi
authors.initials: P
authors.lastname: Kaushik
authors.forename: Anushree
authors.initials: A
authors.lastname: Malik
authors.forename: Virendra Kumar
authors.initials: VK
authors.lastname: Vijay
mesh_terms: D056804:Biofuels / Q000032:analysis*; D018533:Biomass; D003470:Culture Media / Q000494:pharmacology; D052918:Environmental Restoration and Remediation; D056890:Eukaryota / Q000187:drug effects / Q000254:growth & development / Q000302:isolation & purification* / Q000378:metabolism; D005240:Feasibility Studies; D008697:Methane / Q000378:metabolism; D061005:Ponds; D012987:Soil; D062065:Wastewater; D018508:Water Purification
chemical_list: D056804:Biofuels; D003470:Culture Media; D008697:Methane; D012987:Soil; D062065:Wastewater