The unique perspective that microalgae biomass presents for bioenergy production is currently being strongly considered. This type of biomass production involves large amounts of nutrients, due to nitrogen and phosphorous fertilizers, which impose production limitations. A viable alternative to fertilizers is wastewater, rich in essential nutrients (carbon, nitrogen, phosphorus, potassium). Therefore, Arthrospira platensis was cultivated in 150 mL photobioreactors with 70% (v/v) with the wastewater from a dairy industry, under a regime of light:dark cycles (12 h:12 h), with an irradiance of 140 μmol m⁻² s⁻¹ photon. The discontinuous cultures were inoculated with an average concentration of chlorophyll-a of 13.19 ± 0.19 mg L⁻¹. High biomass productivity was achieved in the cultures with wastewater from the dairy industry (1.1 ± 0.02 g L⁻¹ d⁻¹). This biomass was subjected to thermal and physical treatments, to be used in co-digestion with cattle manure. Co-digestion was carried out in a mesophilic regime (35 °C) with a C: N ratio of 19:1, reaching a high methane yield of 482.54 ± 8.27 mL of CH₄ g⁻¹ volatile solids (VS), compared with control (cattle manure). The results demonstrate the effectiveness of the use of cyanobacterial biomass grown in wastewater to obtain bioenergy.

中文翻译：

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乳业废水中产生的蓝细菌生物量及其在牛粪厌氧消化中提高沼气产量的评价

目前正在强烈考虑微藻生物质为生物能源生产提供的独特视角。由于氮和磷肥料，这种生物质生产涉及大量养分，这限制了生产。肥料的可行替代品是废水，该废水富含必需养分（碳，氮，磷，钾）。因此，节旋藻中培养于150mL光生物反应器，用70％（v / v）与来自乳品工业的废水，的光的制度下：黑暗周期（12小时：12小时）中，用140微摩尔米的辐照度^{- 2} s ^-1光子。不连续培养物中接种了平均浓度的叶绿素a为13.19±0.19 mg L ^-1。在奶牛场废水培养中实现了高生物量生产率（1.1±0.02 g L ^-1 d ^-1）。对该生物质进行热处理和物理处理，以与牛粪一起消化。与C：N比为19：1的中温环境（35°C）共同消化，与CH ₄ g ^-1挥发性固体（VS）相比，CH4 g ^-1甲烷的高甲烷产率为482.54±8.27 mL控制（牛粪）。结果证明了利用废水中生长的蓝细菌生物质获得生物能的有效性。