Anaerobic co-digestion of waste microalgal biomass with cattle dung in a pilot-scale reactor: effect of seasonal variations and long-term stability assessment

摘要: The present work is first of its kind to attempt on year-round biogas production utilizing microalgal biomass from lake water. analyses showed that the water contain ample nutrients (TAN: 3.6–16; TDP: 4.88–20.38 and NO3-N: 0.3–19.63 mg L−1) support growth, with an average concentration ≈ 2.0 g L−1, throughout year. Significant correlation (p < 0.05) was observed between nutrient in Further, co-digestion studies pilot-scale plant (0.5 m3) good performance a volumetric specific yield range 0.45 0.65 m3 day−1 0.72 1.04 m3 kg−1 VSfed day−1 respectively, during summer. However, winters, were found be 0.06 0.21 m3 day−1 0.096–0.336 m3 kg−1 day−1, 55–65% CH4. Detailed digestate indicated long-term stability process. This study established feasibility waste algal eutrophic for production.