低温-中温条件下生物催化植物提取物对餐厨废弃物产生沼气的影响

IF 0.5 Q4 ENERGY & FUELS
B. Chaka, A. Osano, J. Maghanga, M. Magu
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引用次数: 0

摘要

为了满足人类的能源需求,废物转化能源系统的辐射化正在兴起。从厨房垃圾中产生沼气就是这样一种方案,尽管受到低温下产量低和甲烷水平的影响。在这项研究中,对具有发酵特性的生物催化提取物在环境温度下加速这些过程并提高沼气产量的潜力进行了评估。在28天的保留期内,监测了厨房垃圾基质厌氧参数和元素组成以及沼气产量和甲烷水平的变化。使用三个40升的批次和未搅拌的生物消化器,其中含有生物催化剂Terminalia b.,Acanthaceae spp.和对照装置。结果表明,在含有添加剂的样品中糖化速率很快。Terminalia b.添加剂的挥发性固体水解率高达98.3%,其次是Acanthaceae spp.(50.8%)和对照样品(29.4%)。随着氮、磷和硫水平的线性增加,有机碳还原也出现了类似的趋势。生物催化剂不影响底物pH、挥发性脂肪酸和碱度水平。Terminalia b.样品的产量是对照样品的2.32倍,而Acanthaceae spp.样品的产量比对照样品高1.375倍。Terminalia b.甲烷含量最高(45.475±0.922%),其次是对照样品(41.750±1.401)和Acanthaceae spp.样品(39.275±0.263%)。在19.5±0.5°C下保存28天后。因此,在生物燃料合成中使用这些生物催化剂可以优化沼气生产,从而实现更环保的经济。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The Influence of Biocatalytic Plant Extracts on Biogas Production from Kitchen Wastes at Cryo-mesophilic Temperature Regimes
Radicalization in waste-to-energy systems are on the rise to meet human energy demands. Biogas generation from kitchen wastes is one such scheme, though affected by poor yields and methane levels at low temperatures. In this research, biocatalytic extracts with fermentative properties were hereby assessed on their potential to fasten these processes and increase the biogas yield at ambient temperatures. The variations in kitchen waste substrate anaerobic parameters and elemental composition as well as biogas yields and methane levels were monitored in a 28-day retention period. Three 40-liter batch and unstirred bio-digesters containing biocatalysts Terminalia b., Acanthaceae spp. and a control setup were used. The results indicated rapid saccharification rates in the samples with additives. Terminalia b. additives exhibited high volatile solids hydrolysis rate of 98.3% followed by Acanthaceae spp. (50.8%) and control sample (29.4%). Similar trends were observed in organic carbon reduction as the levels of nitrogen, phosphorus and sulfur linearly increased. The biocatalysts did not affect substrate pH, volatile fatty acids and alkalinity levels. Terminalia b. sample produced 2.32 folds higher while Acanthaceae spp. sample produced 1.375 folds higher than the control sample. Terminalia b. methane levels were highest (45.475±0.922%) followed by the control sample (41.750±1.401) and Acanthaceae spp. sample (39.275±0.263%) after 28-day retention period at 19.5±0.5°C. Use of these biocatalysts in biofuel synthesis can thus optimize biogas production leading to greener economies.
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来源期刊
Advances in Energy Research
Advances in Energy Research ENERGY & FUELS-
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