Environmental Electrochemistry, CIDETEQ, S. C., P.O. Box 064, C.P. 76703, Parque Tecnológico Querétaro S/N, Sanfandila, Pedro Escobedo, Querétaro, Mexico.
Environmental Electrochemistry, CIDETEQ, S. C., P.O. Box 064, C.P. 76703, Parque Tecnológico Querétaro S/N, Sanfandila, Pedro Escobedo, Querétaro, Mexico.
J Biosci Bioeng. 2014 Oct;118(4):415-9. doi: 10.1016/j.jbiosc.2014.03.013. Epub 2014 May 2.
The combined effect of temperature and pretreatment of the substrate on the anaerobic treatment of the organic fraction of slaughterhouse solid waste was studied. The goal of the study was to evaluate the effect of pretreating the waste on the efficiency of anaerobic digestion. The effect was analyzed at two temperature ranges (the psychrophilic and the mesophilic ranges), in order to evaluate the effect of temperature on the performance of the anaerobic digestion process for this residue. The experiments were performed in 6 L batch reactors for 30 days. Two temperature ranges were studied: the psychrophilic range (at room temperature, 18°C average) and the mesophilic range (at 37°C). The waste was pretreated with NaOH before the anaerobic treatment. The result of pretreating with NaOH was a 194% increase in the soluble chemical oxygen demand (COD) with a dose of 0.6 g NaOH per g of volatile suspended solids (VSS). In addition, the soluble chemical oxygen demand/total chemical oxygen demand ratio (sCOD/tCOD) increased from 0.31 to 0.7. For the anaerobic treatment, better results were observed in the mesophilic range, achieving 70.7%, 47% and 47.2% removal efficiencies for tCOD, total solids (TS), and volatile solids (VS), respectively.
研究了温度和底物预处理对屠宰场固体废物有机部分的厌氧处理的综合影响。该研究的目的是评估预处理废物对厌氧消化效率的影响。在两个温度范围（嗜冷范围和中温范围）下分析了影响，以评估温度对该残留物的厌氧消化过程性能的影响。实验在 6 L 分批式反应器中进行了 30 天。研究了两个温度范围：嗜冷范围（室温，平均 18°C）和中温范围（37°C）。在进行厌氧处理之前，废物用 NaOH 进行了预处理。用 0.6 g NaOH/g 挥发性悬浮固体（VSS）预处理的结果是可溶化学需氧量（COD）增加了 194%。此外，可溶化学需氧量/总化学需氧量比（sCOD/tCOD）从 0.31 增加到 0.7。对于厌氧处理，在中温范围内观察到了更好的结果，分别实现了 tCOD、总固体（TS）和挥发性固体（VS）的 70.7%、47%和 47.2%的去除效率。
