Biomass Engineering Center, College of Engineering, China Agricultural University, Beijing 100083, China; Gruppo Ricicla Lab. - DiSAA, University of Milan, Via Celoria 2, 20133 Milano, Italy.
Biomass Engineering Center, College of Engineering, China Agricultural University, Beijing 100083, China.
Biotechnol Adv. 2016 Dec;34(8):1289-1304. doi: 10.1016/j.biotechadv.2016.09.004. Epub 2016 Sep 30.
Anaerobic digestion (AD) is a useful method for producing renewable energy/biofuel. Today, biogas production uses a large amount of energy crops (EC), with the effect of increasing AD costs and creating conflict between food/feed vs. energy use. A partial solution to this might be the substitution of EC with agricultural wastes, e.g. straw. Straw and corn stover are widely available in the world and approximately 1600millionMgyear of these substrates are available. Straw can be useful used for biogas production but its characteristics limit its performance so that sometimes the energetic balance can be negative. In this review, the limits for the conversion of this substrate into biogas were investigated and solutions/proposals for getting higher straw biogas production performance are reported. In addition, energetic balances for untreated and pre-treated substrates are reported, giving indicative evaluations of the sustainability of straw and corn stover use for biogas production.
厌氧消化（AD）是生产可再生能源/生物燃料的一种有用方法。如今，沼气生产需要大量的能源作物（EC），这增加了 AD 的成本，并在粮食/饲料与能源利用之间造成了冲突。解决这个问题的一种方法可能是用农业废弃物（例如秸秆）替代 EC。秸秆和玉米秸秆在世界范围内广泛存在，每年大约有 16 亿吨这些底物可用。秸秆可用于沼气生产，但由于其特性限制了其性能，因此有时能量平衡可能为负。在本次综述中，研究了将这种底物转化为沼气的限制，并报告了提高秸秆沼气生产性能的解决方案/建议。此外，还报告了未经处理和预处理底物的能量平衡，对秸秆和玉米秸秆用于沼气生产的可持续性进行了指示性评估。
