Department of Food and Agricultural Product Technology, Faculty of Agricultural Technology, Gadjah Mada University, Yogyakarta 55281, Indonesia.
Bioresour Technol. 2013 Jan;128:461-6. doi: 10.1016/j.biortech.2012.10.088. Epub 2012 Oct 29.
Pretreatment of OPEFB (oil palm empty fruit bunch) by NMMO (N-methylmorpholine-N-oxide) on its subsequent digestions was investigated. The pretreatments were carried out at 90 and 120 °C for 1, 3, and 5h in three different modes of dissolution (by 85% NMMO solution), ballooning (79% NMMO solution), and swelling (73% NMMO solution). The total solid recovery after the pretreatment was 89-94%. The pretreatment process did not have a major impact on the composition of OPEFB, other than a reduction of ash from 5.4% up to 1.3%. The best improvement in biogas production was achieved by a dissolution mode pretreatment of OPEFB, using conditions of 85% NMMO, 3h, and 120 °C. It resulted in 0.408 Nm(3)/kg VS methane yield and 0.032 Nm(3)CH(4)/kg VS/day initial methane production rate, which correspond in improving by 48% and 167% compared to the untreated OPEFB, respectively.
预处理 OPEFB（油棕空果串）通过 NMMO（N-甲基吗啉-N-氧化物）在随后的消化。预处理在 90 和 120°C 进行 1、3 和 5 h，在三种不同的溶解模式下进行（85%NMMO 溶液）、气球（79%NMMO 溶液）和溶胀（73%NMMO 溶液）。预处理后总固体回收率为 89-94%。预处理过程除了将灰分从 5.4%降低到 1.3%外，对 OPEFB 的成分没有重大影响。使用 85%NMMO、3 h 和 120°C 的溶解模式预处理 OPEFB，可获得最佳的沼气产量提高。这导致 0.408 Nm(3)/kg VS 甲烷产率和 0.032 Nm(3)CH(4)/kg VS/天的初始甲烷产率，与未处理的 OPEFB 相比，分别提高了 48%和 167%。
