Ensilage and anaerobic digestion of Sargassum muticum
Ensilage and anaerobic digestion of Sargassum muticum
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DOI：
10.1007/s10811-016-0804-9
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发表时间：
2016-10-01
影响因子：
3.3
通讯作者：
Harvey, Patricia J.
中科院分区：
文献类型：
--
作者：
Milledge, John J.;Harvey, Patricia J.
棕色海藻Sargassum muticum是不列颠群岛，欧洲大陆和北美海岸的入侵物种。根除和控制疟疾的努力虽然费时费钱，但一般都不成功。对这种生物质燃料的商业开发可以鼓励其收获和控制。厌氧消化（AD）被认为是利用藻类作为生物燃料的最有前途的方法之一。S.海藻是季节性的;因此，需要保存和储存海藻以供应全年的厌氧消化过程。青贮饲料在陆地农业中应用广泛，但对青贮海藻的研究却很少。本研究的目的是：（1）研究青贮对S. B）青贮前粉碎对青贮过程中浸出液和其他损失的影响; c）检查青贮S的质量平衡和能量损失。muticum。发现青贮是保存海藻的有效、低能量损失的方法，其中由于青贮导致的来自生物质的能量损失<海藻原料的较高热值的8%。青贮导致盐从生物质中的损失和有机硫的几乎全部损失。在青贮之前减小海藻的尺寸减少了生物质的渗滤液和能量损失。青贮对产甲烷量无显著影响。然而，从S. muticum是低的aecurrency信号0.11 L CH 4 g（-1）挥发性固体（VS），与理论最大值的25%相似。需要进一步的研究来确定S. muticum的C：N比，而S. Muticum的比例低（8：1），并且与低氮含量底物如粗甘油共消化可能是提高甲烷产率的潜在方法。
The brown seaweed Sargassum muticum is an invasive species to the coasts of the British Isles, mainland Europe and North America. Attempts at its eradication and control have generally not been successful, although time-consuming and costly. Commercial exploration of this biomass for fuel could encourage its harvesting and control. Anaerobic digestion (AD) has been suggested as one of the most promising methods of exploiting algae for biofuel. The harvesting of S. muticum is seasonal; thus, there will be a need to preserve and store seaweed to supply a year-round anaerobic digestion process. Ensiling is widely used in terrestrial agriculture, but there has been little research on ensiling seaweed. The aims of this research were to: a) study the effect of ensiling on the biomethane potential of S. muticum, b) effect of size reduction prior to ensilage on leachate and other losses during ensiling and c) examine the mass balance and energy losses of ensiling S. muticum. Ensiling was found to be an effective, low energy loss method of preserving seaweed with energy loss from the biomass due to ensiling < 8 % of the higher heating value of seaweed feedstock. Ensiling results in losses of salt from the biomass and the virtual total loss of organic sulphur. Size reduction of seaweed prior to ensilage reduced leachate and energy loss from the biomass. Ensiling had no significant effect on methane yield. However, methane yields from S. muticum are low aecurrency sign0.11 L CH4 g(-1) volatile solid (VS) at similar to 25 % of the theoretical maximum. Further research is needed to establish the reasons for the recalcitrance of S. muticum, but the C:N ratio of S. muticum is low (8:1), and co-digestion with a low nitrogen content substrate such as crude glycerol may be a potential method of improving methane yield.