Assemany Paula Peixoto, Calijuri Maria Lúcia, do Couto Eduardo de Aguiar, da Silva Fernanda Pereira, de Souza Mauro Henrique Batalha
Department of Civil Engineering, Universidade Federal de Viçosa, Núcleo de Pesquisas Ambientais Avançadas - nPA, Viçosa, MG, Brazil E-mail:
Water Sci Technol. 2018 Aug;78(1-2):12-19. doi: 10.2166/wst.2017.570.
High rate algal pond (HRAP) was evaluated according to its energy potential and productivity by two rates, net energy ratio (NER) and specific biomass productivity. All energy inputs were calculated according to one HRAP with pre-ultraviolet disinfection treating anaerobic domestic sewage. The outputs were calculated for two energetic pathways: lipid and biogas production for the raw biomass (RB) and biomass after lipid extraction. The non-polar lipid content in dry biomass was 7.6%, reaching a daily lipid productivity of 0.2 g/m·day and the biogas production potential was 0.20 m/kg solids. For the biomass after lipid extraction, the biogas production reached 2.6 m/kg solids. NER values of 10 for the RB were similar for lipids and biogas routes. The specific biomass productivity was 0.7 mg/kJ. For the residual biomass, after lipid extraction, NER value was 10 for the integrated route (lipids + biogas) and the specific biomass productivity of the extracted biomass was 0.4 mg/kJ. The best energetic pathway was to integrate both lipids and biogas route.
通过净能量比（NER）和比生物质生产力这两个比率，根据其能源潜力和生产力对高速藻类塘（HRAP）进行了评估。所有能量输入均根据一个采用紫外线预处理厌氧生活污水的HRAP进行计算。针对两条能量途径计算了产出：原始生物质（RB）以及脂质提取后的生物质的脂质和沼气产量。干生物质中的非极性脂质含量为7.6%，日脂质生产力达到0.2克/平方米·天，沼气生产潜力为0.20立方米/千克固体。对于脂质提取后的生物质，沼气产量达到2.6立方米/千克固体。RB的脂质和沼气途径的NER值均为1。比生物质生产力为0.7毫克/千焦。对于脂质提取后的残余生物质，综合途径（脂质+沼气）的NER值为1，提取后生物质的比生物质生产力为0.4毫克/千焦。最佳能量途径是整合脂质和沼气途径。
