Journal of Material Cycles and Waste Management ( IF 2.7 ) Pub Date : 2021-07-07 , DOI: 10.1007/s10163-021-01270-z Priscila Liane Biesdorf Borth 1 , Jessica Klarosk Helenas Perin 1 , Arthur Ribeiro Torrecilhas 1 , Emília Kiyomi Kuroda 1 , Fernando Fernandes 1 , Nicole Caldas Pan 2
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The objective of this study is to evaluate the influence of the addition of garden waste (GW) on the performance of food waste (FW) anaerobic digestion. In this regard, a bench scale experiment was performed via biochemical methane potential test. The reactors were composed of flasks with a total volume of 310 mL and a useable volume of 120 mL, containing the waste mixtures in the different studied conditions. All reactors were incubated under 36 °C. A factorial design was used to evaluate the influence of three factors on methane production: inoculum and substrate ratio (I:S), volatile solid (VS) content of the mixture and type of substrate. The results indicated that the condition referred to an I:S ratio of 1:1, higher VS content (VSmix) and only FW as a substrate achieved the higher methane production and differed significantly from the others. This combination resulted in 67.5% of VS removal, 509 NmL of cumulative CH4 and a specific methane yield of 159 NmLCH4 gVS−1. The results obtained in this research indicated that the addition of GW on the anaerobic digestion of FW did not positively influence the methane production.
Graphic abstract
中文翻译：
食物和花园垃圾共同消化的生化甲烷潜力随固体含量和接种物：底物比的变化
本研究的目的是评估添加花园垃圾 (GW) 对食物垃圾 (FW) 厌氧消化性能的影响。在这方面，通过生化甲烷潜力测试进行了小规模实验。反应器由总体积为 310 mL 和可用体积为 120 mL 的烧瓶组成，其中包含不同研究条件下的废物混合物。所有反应器均在 36°C 下温育。因子设计用于评估三个因素对甲烷产生的影响：接种物和底物比 (I:S)、混合物的挥发性固体 (VS) 含量和底物类型。结果表明，该条件是指 I:S 比为 1:1，较高的 VS 含量（VS混合) 并且只有 FW 作为底物实现了更高的甲烷产量，并且与其他物质显着不同。这种组合导致 67.5% 的 VS 去除、509 NmL 的累积 CH 4和 159 NmLCH 4 gVS -1的特定甲烷产率。在这项研究中获得的结果表明，在 FW 的厌氧消化中添加 GW 对甲烷产量没有积极影响。
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