Center for Microbial Ecology and Technology (CMET), Ghent University, Coupure Links 653, B-9000 Gent, Belgium.
Universidad de las Fuerzas Armadas ESPE, Av. Gral. Rumiñahui s/n, Sangolquí, Ecuador.
Bioresour Technol. 2018 Oct;265:568-572. doi: 10.1016/j.biortech.2018.05.100. Epub 2018 May 31.
The aim of this work was to evaluate the bioenergy potential of cocoa residue via anaerobic digestion. Batch and fed-batch lab-scale reactors were operated under low and high solids conditions. In the batch tests, 59 ± 4% of Chemical Oxygen Demand (COD) was recovered as methane. This corresponded with an average methane yield of 174 (wet) and 193 (dry) L kg volatile solids fed, whereas a series of fed-batch reactors produced 70 ± 24 (wet) and 107 ± 39 (dry) L CH kg volatile solids fed during stable conditions. A case study was developed for canton Balao (Ecuador) based on our experimental data, operational estimates and available cocoa waste in the area. Annually, 8341 MWh could be produced, meeting 88% of the current electricity demand in Balao. This case study proves the potential for cocoa waste as a source of renewable energy in rural areas.
本研究旨在通过厌氧消化评估可可残渣的生物能源潜力。采用批量和分批式实验室规模反应器，在低固体和高固体条件下进行实验。在批量测试中，59±4%的化学需氧量（COD）被回收为甲烷。这对应于平均甲烷产量为 174（湿）和 193（干）L/kg 挥发性固体进料，而一系列分批式反应器在稳定条件下产生 70±24（湿）和 107±39（干）L CH/kg 挥发性固体进料。基于我们的实验数据、运行估算和该地区可用的可可废料，对厄瓜多尔巴劳镇（Balao）进行了案例研究。每年可产生 8341MWh 的电量，满足巴劳镇当前 88%的电力需求。该案例研究证明了可可废料作为农村地区可再生能源的潜力。
