Microbial Catalysis and Process Engineering Laboratory, Department of Microbiology, School of Life Sciences, Central University of Rajasthan Bandarsindri, Kishangarh, Ajmer 305801, Rajasthan, India.
Department of Biotechnology, Indian Institute of Technology Roorkee, Roorkee 247667, Uttarakhand, India.
Bioresour Technol. 2020 Jul;308:123292. doi: 10.1016/j.biortech.2020.123292. Epub 2020 Apr 5.
In the present work Chlorella pyrenoidosa, Scenedesmus abundans and Anabaena ambigua have been evaluated for their biomass, phycoremediation efficiency and biomethane production potential by cultivating them in the primary treated sewage waste water (PTSWW) under controlled conditions. By the end of 25-day experiment, up to 52-88% reduction was observed in the nutrient concentration from the 3:1 ratio of PTSWW. Co-digestion of microalgal biomass (dry) with cow dung was performed to estimate biomethane potential. Biogas yield of 618-925 ml g VS with 48-65% of methane content was obtained employing the microalgal species cultivated in PTSWW. Microalgae appeared notably competent at nutrient sequestration from PTSWW with significant microalgal biomass productivity for biogas production. Energy balance studies revealed the feasibility of coupling the remediation with energy generation. High photosynthetic rate and biomass generation ability along with nutrient confiscation supports employment of microalgae as a potential next generation biofuel source with waste management.
在本工作中，小球藻、丰富栅藻和铜绿微囊藻被评估了它们的生物质、光修复效率和生物甲烷生产潜力，方法是在控制条件下将它们在初级处理污水（PTSWW）中培养。在 25 天的实验结束时，从 PTSWW 的 3:1 比例中观察到营养物浓度高达 52-88%的降低。采用与牛粪共消化微藻生物质（干重）来估计生物甲烷潜力。利用在 PTSWW 中培养的微藻物种，获得了 618-925ml/gVS 的沼气产量，甲烷含量为 48-65%。微藻显然能够从 PTSWW 中有效地摄取营养物，并且具有显著的微藻生物质生产力用于沼气生产。能量平衡研究表明，修复与能源生产相结合是可行的。高光合速率和生物质生成能力以及养分攫取能力支持将微藻作为一种具有废物管理功能的潜在下一代生物燃料来源的应用。
