An Assessment of Different Integration Strategies of Hydrothermal Carbonisation and Anaerobic Digestion of Water Hyacinth
An Assessment of Different Integration Strategies of Hydrothermal Carbonisation and Anaerobic Digestion of Water Hyacinth
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DOI：
10.3390/en13225983
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发表时间：
2020-11-01
期刊：
影响因子：
3.2
通讯作者：
Ross, Andrew B.
中科院分区：
文献类型：
--
作者：
Brown, Aaron E.;Adams, Jessica M. M.;Ross, Andrew B.
水葫芦（WH）是一种入侵性水生植物，在世界各地的淡水水体中占主导地位。然而，由于其快速的增长速度和广泛的全球存在，WH可以提供作为生物质原料的巨大潜力，包括用于生物能源发电。本研究比较了不同的整合策略的水热碳化（HTC）和厌氧消化（AD）使用WH，在一系列的温度。这些包括（i）水热炭燃烧和工艺水消化，（ii）水热炭消化，（iii）浆料消化。HTC反应在150 ℃、200 ℃和250 ℃下进行。分离用于燃烧的碳氢化合物和用于消化的工艺沃茨提供了能量上最可行的增值途径。然而，从WH生产的氢焦显示结渣和结垢的趋势，限制了它们在大规模燃烧中的使用。在150摄氏度下生产的WH浆料的AD似乎在能量上是可行的，并且也有可能成为HTC和AD之间使用WH的可行的整合策略。
Water hyacinth (WH) is an invasive aquatic macrophyte that dominates freshwater bodies across the world. However, due to its rapid growth rate and wide-spread global presence, WH could offer great potential as a biomass feedstock, including for bioenergy generation. This study compares different integration strategies of hydrothermal carbonisation (HTC) and anaerobic digestion (AD) using WH, across a range of temperatures. These include (i) hydrochar combustion and process water digestion, (ii) hydrochar digestion, (iii) slurry digestion. HTC reactions were conducted at 150 degrees C, 200 degrees C, and 250 degrees C. Separation of hydrochars for combustion and process waters for digestion offers the most energetically-feasible valorisation route. However, hydrochars produced from WH display slagging and fouling tendencies; limiting their use in large-scale combustion. AD of WH slurry produced at 150 degrees C appears to be energetically-feasible and has the potential to also be a viable integration strategy between HTC and AD, using WH.