Abstract In Mexico City, both the organic fraction of municipal solid waste (OFMSW) and the spread of water hyacinth among water bodies have been reported to increase greatly each year. These wastes have been associated with health problems and with the contamination of water bodies, soil, and air. Previous studies have demonstrated that water hyacinth and OFMSW can be sustainably managed using anaerobic digestion (AD) and anaerobic co-digestion (ACD) processes. In the present study, the biochemical methane potential of water hyacinth and OFMSW was determined. Leachate from Mexico City’s Bordo Poniente composting plant was used as inoculum, and the effects of two substrate-to-inoculum (S:I) ratios on volatile solids (VS) were investigated at lab-scale and under thermophilic conditions with a hydraulic retention time of 50 d. Based on S:I ratio, the AD of OFMSW with an S:I of 1:1 yielded more methane (387 ± 25 NLCH4/kgVSadded) than the ACD process (337 ± 15 NLCH4/kgVSadded), but not significantly (p > 0.05). Inoculum showed great potential to digest wastes used in this research. The ACD S:I ratio of 1:1 demonstrated that the AD process is both to produce renewable energy and to resolve problems associated with water hyacinth, OFMSW, and leachate.

中文翻译：

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使用墨西哥城 Bordo Poniente 堆肥厂的渗滤液作为接种物的水葫芦和城市固体废物有机部分的生化甲烷潜力

摘要 在墨西哥城，据报道，城市固体废物的有机部分 (OFMSW) 和水葫芦在水体中的传播每年都大大增加。这些废物与健康问题以及水体、土壤和空气的污染有关。先前的研究表明，可以使用厌氧消化 (AD) 和厌氧共消化 (ACD) 过程对水葫芦和 OFMSW 进行可持续管理。在本研究中，确定了水葫芦和 OFMSW 的生化甲烷潜力。使用墨西哥城 Bordo Poniente 堆肥厂的渗滤液作为接种物，并在实验室规模和高温条件下研究了两种底物与接种物 (S:I) 比对挥发性固体 (VS) 的影响，并具有水力停留时间50 天。基于 S:I 比率，与 ACD 工艺 (337 ± 15 NLCH4/kgVS added) 相比，S:I 为 1:1 的 OFMSW 的 AD 产生更多的甲烷 (387 ± 25 NLCH4/kgVS added)，但不显着 (p > 0.05)。接种物显示出消化本研究中使用的废物的巨大潜力。ACD S:I 比率为 1:1，表明 AD 工艺既可以生产可再生能源，又可以解决与水葫芦、OFMSW 和渗滤液相关的问题。