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首页> 外文期刊>Industrial and organizational psychology >Bio-Crude Production through Aqueous Phase Recycling of Hydrothermal Liquefaction of Sewage Sludge
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Bio-Crude Production through Aqueous Phase Recycling of Hydrothermal Liquefaction of Sewage Sludge

机译：通过水热相回收水热液化污水污泥水热液化的生物粗产物

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Hydrothermal liquefaction (HTL) is a promising technology for the production of bio-crude. However, some unresolved issues still exist within HTL, which need to be resolved before its promotion on a commercial scale. The management of the aqueous phase is one of the leading challenges related to HTL. In this study, the sewage sludge has been liquefied at 350 degrees C with and without catalyst (K2CO3). Subsequently, aqueous phase recycling was applied to investigate the effect of recycling on bio-crude properties. Obtained results showed that the energy recovery in the form of bio-crude increased by 50% via aqueous phase recirculation, whereas nitrogen content in the bio-crude was approximately doubled after eight rounds of recycling. GCMS characterization of the aqueous phase indicated acetic acid as a major water-soluble compound, which employed as a catalyst (0.56 M), and resulted in a negligible increase in bio-crude yield. ICP-AES highlighted that the majority of the inorganics were transferred to the solid phase, while the higher accumulation of potassium and sodium was found in the aqueous phase via successive rounds of recycling.
机译：水热液化（HTL）是生产生物原油的有希望的技术。但是，HTL中仍然存在一些未解决的问题，需要在商业规模上推广之前解决。水相的管理是与HTL相关的主要挑战之一。在这项研究中，污水污泥在350℃下液化，无催化剂（K2CO3）。随后，应用水相再循环以研究再循环对生物粗特性的影响。得到的结果表明，生物粗产物形式的能量回收通过水相再循环增加了50％，而生物粗产物中的氮含量大约在八轮再循环后大约加倍。水相的GCMS表征用作乙酸作为主要的水溶性化合物，其用作催化剂（0.56μm），并导致生物粗产率的易忽略率。 ICP-AE突出显示大部分无机物转移到固相，而通过连续回收在水相中发现钾和钠的较高积累。

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