Anaerobic digestion of fungally pre-treated oil palm empty fruit bunches: energy and carbon emission footprint
Anaerobic digestion of fungally pre-treated oil palm empty fruit bunches: energy and carbon emission footprint
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真菌预处理油棕空果串的厌氧消化：能源和碳排放足迹
DOI：
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发表时间：
2020
期刊：
影响因子：
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通讯作者：
M. B. Pangestuti
中科院分区：
文献类型：
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作者：
N. Hidayat;S. Suhartini;R. N. Utami;M. B. Pangestuti
油棕空果束（OPEFB）是印度尼西亚丰富的木质纤维素生物质之一。然而，EFOB中木质素的高含量已经成为阻碍其作为生物能源资源的障碍之一，因为它很难被微生物分解。因此，通常需要预处理来增强OPEFB中有机含量的生物降解过程。为了提高OPEFB作为生物能源的利用率，对其进行了生物预处理。本研究旨在探讨真菌预处理对OPEFB特性及其甲烷潜力的影响，并估计OPEFB厌氧消化（AD）所节省的能源和碳排放。在本研究中，OPEFB在标准条件下用Phanerocheate chrassporium处理，孵育7天和14天。利用AD评估工具（ADAT）软件计算能源和碳排放足迹。结果表明，真菌预处理能够增加有机质，提高甲烷势。然而，对能量（即电和热）的估计表明，真菌预处理的OPEFB具有较低的能量平衡和碳排放节约。处理后的OPEFB上较高的含水率可能会降低沼气和甲烷的产量。然而，如何结合其他绿色预处理方法提高OPEFB产气效果，还需要进一步的研究。
Oil palm empty fruit bunches (OPEFB) is one of the abundant lignocellulosic biomass in Indonesia. However, high lignin content in EFOB has becoming one of the obstacles in valorising it as bioenergy resources, as it is hardly broken down by the microorganisms. Therefore, pre-treatment is often needed to enhance the biodegradation process of organic content in OPEFB. The biological pre-treatment is besieged to enhance the utilisation of OPEFB as bioenergy resources. This study was aimed to investigate the impact of fungal pre-treatment on the OPEFB characteristics and its methane potential, and to estimate the energy and carbon emission saving from anaerobic digestion (AD) of OPEFB. In this study, OPEFB was treated using Phanerocheate chrysosporium under the standard condition and incubated for 7 and 14 days. The energy and carbon emission footprint were calculated using AD Assessment Tool (ADAT) software. The results showed that fungal pre-treatment was able to increase organic matter and enhance methane potential. Estimation on energy (i.e. electrical and heat), however, indicated a lower energy balance and carbon emissions saving for fungal pre-treated OPEFB. The higher moisture content (MC) on treated OPEFB may reduce the biogas and methane production. Yet, further research is still required to have an in-depth understanding of improving the efficacy of biogas production from OPEFB by incorporating other green pre-treatment approaches.