利用水热液化技术将医疗设施污水污泥转化为生物原油

O. Okareh, Ifeoluwa M. Akinniyi
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引用次数: 0

摘要

人口增长、城市废物管理挑战、化石燃料枯竭及其相关污染日益成为公共卫生问题。这就需要生产可再生和可持续的生物燃料。因此,本研究采用水热液化法将污水污泥转化为生物原油。有目的地从污水处理厂收集污水污泥样本,并使用标准方法(ASTM和AOAC)进行实验室分析(一式三份)以获得其成分。Ibadan大学学院医院污水处理厂的污水污泥(25 kg)在300℃下采用水热液化法转化为生物原油和生物炭。对生物原油的理化性质进行了分析。转化产物收率为34%,浊点、倾点、粘度和密度分别为-38.89oC、-36.11oC、0.86cP和1.04 ml-1。生物原油最高热值(HHV)为30.60 MJ/kg。从生物原油的总烃(TPH)分析中鉴定出18种化合物,其中17种化合物在原油的柴油范围内,表明生物原油在替代化石燃料方面具有很大的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Conversion of sewage sludge from healthcare facility to bio-crude oil using hydrothermal liquefaction technology
Population growth, municipal waste management challenges, fossil fuel depletion and its associated pollution are increasingly becoming public health issues. These necessitate the production of renewable and sustainable biofuels. This study, therefore, employed the use of hydrothermal liquefaction for the conversion of sewage sludge to bio-crude oil. Samples of the sewage sludge were purposively collected from sewage treatment plant and subjected to laboratory analyses (in triplicates) using standard methods (ASTM and AOAC) to obtain the composition. Sewage sludge (25 kg) from the sewage treatment Plant of University College Hospital, Ibadan, was converted at 300oC to bio-crude oil and biochar using hydrothermal liquefaction. The bio-crude oil was analysed for its physico-chemical properties. Conversion product yield gave 34% bio-crude oil with cloud point, pour point, viscosity and density of -38.89oC, -36.11oC, 0.86cP and 1.04gml-1respectively. The Higher Heating Value (HHV) of the bio-crude oil was 30.60 MJ/kg. A total of 18 compounds were identified from the analysis of Total Petroleum Hydrocarbon (TPH) in the bio-crude oil with 17 compounds within the diesel range organics of crude oil which showed that bio-crude oil has great potential to serve as alternative to fossil fuels.
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