NDLI: of Smart Grid and Clean Energy Hydrothermal liquefaction of demineralized wastewater algal biomass

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of Smart Grid and Clean Energy Hydrothermal liquefaction of demineralized wastewater algal biomass

Content Provider	Semantic Scholar
Author	Carpio, Rowena B. Kuo, Chih-Ting Leon, Rizalinda L. De Charles, L. Woods Schideman Zhang, Yuanhui
Copyright Year	2018
Abstract	The use of high-ash containing biomass for energy applications leads to serious problems during the conversion process and affects the quality of the resulting fuel products. In this study, the effect of demineralization treatments on the hydrothermal liquefaction (HTL) of wastewater algal biomass (WAB) was investigated. Three different acid treatments were selected in this study: acetic acid (AA), formic acid (FA), and sulfuric acid (SA). The HTL product distribution and the quality and chemical composition of the biocrude oil obtained from the treated and untreated biomass (UBM) were compared. HTL experiments were conducted using a 40-mL tubular reactor at a reaction temperature of 300 °C for a retention time of 60 min under an initial headspace pressure of 100 psi, with pure N2 used as the process gas. The results revealed that the demineralization treatments significantly improved the biocrude oil yield from 17% daf (dry, ash-free weight) up to 25% daf and the aqueous phase product yield from 50% daf up to 61% daf, while there was no significant effect on the yield of the gaseous products (6%–7% daf). The solid residue yield was lower in the treated biomass (7%–15% daf) in comparison with that from the UBM (26% daf). The highest biocrude oil yield (25% daf) was obtained from AA and FA. However, the highest biocrude oil energy recovery (ER) was obtained from FA (41.83% ± 1.87%), which was ~52% higher than that from the UBM. The ultimate, GC-MS and thermogravimetric analyses showed that the biocrude oils obtained from demineralized biomass were comparable in quality and did not vary much from the biocrude oil obtained from the UBM.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.ijsgce.com/uploadfile/2018/0619/20180619113849486.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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