Comprehensive evaluation on product characteristics of fast hydrothermal liquefaction of sewage sludge at different temperatures

Xu, Donghai; Lin, Geng; Liu, Liang; Wang, Yang; Jing, Zhou; Wang, Shuzhong

doi:10.1016/j.energy.2018.06.191

Cited by 103 publications

(34 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The HHV of the sewage sludge was calculated as 16.9 MJ/kg. The typical energy content value of dried MSS was reported in the range of 16.1-21.3 MJ/kg (Liu et al, 2018;Xu et al, 2018). Phosphorus content in the MSS was reported in the range of 15.3-26.2 g/kg (Bridle and Pritchard, 2004;Qian and Jiang, 2014); the collected MSS had a phosphorus content of 12 g/kg.…”

Section: Characteristics Of the Municipal Sewage Sludgementioning

confidence: 96%

Energy recovery and nutrients recycling from municipal sewage sludge

Das

Khan

AbdulQuadir

et al. 2020

Science of The Total Environment

View full text Add to dashboard Cite

Section: Characteristics Of the Municipal Sewage Sludgementioning

confidence: 96%

Energy recovery and nutrients recycling from municipal sewage sludge

Das

Khan

AbdulQuadir

et al. 2020

Science of The Total Environment

View full text Add to dashboard Cite

“…Carbon recovery in the aqueous phase decreased with increasing temperatures to 6.0 wt.%. Xu et al (2018) also reported that carbon recovery within the aqueous phase from HTL of sewage sludge reduced with increasing temperature from 260 to 350 • C. This is caused by the abundance of certain organic and alcohol compounds in the aqueous phase at low temperatures (Lu et al, 2017). Tian et al (2015), however, found that carbon partitioning to the aqueous phase increased slightly with increasing temperature.…”

Section: Carbon and Nitrogen Recovery Within Htl Productsmentioning

confidence: 98%

Hydrothermal Liquefaction of Food Waste: Effect of Process Parameters on Product Yields and Chemistry

Bayat

Dehghanizadeh

Jarvis

et al. 2021

Front. Sustain. Food Syst.

View full text Add to dashboard Cite

Increasing food waste generation (1.6 billion tons per year globally) due to urban and industrial development has prompted researchers to pursue alternative waste management methods. Energy valorization of food waste is a method that can reduce the environmental impacts of landfills and the global reliance on crude oil for liquid fuels. In this study, food waste was converted to bio-crude oil via hydrothermal liquefaction (HTL) in a batch reactor at moderate temperatures (240–295°C), reaction times (0–60 min), and 15 wt.% solids loading. The maximum HTL bio-crude oil yield (27.5 wt.%), and energy recovery (49%) were obtained at 240°C and 30 min, while the highest bio-crude oil energy content (40.2 MJ/kg) was observed at 295°C. The properties of the bio-crude oil were determined using thermogravimetric analysis, fatty acid methyl ester (FAME) analysis by gas chromatography with flame ionization detection, CHNS elemental analysis, and ultrahigh-resolution Fourier transform ion cyclotron resonance mass spectroscopy (FT-ICR MS). FT-ICR MS results indicated that the majority of the detected compounds in the bio-crude oil were oxygen-containing species. The O4 class was the most abundant class of heteroatom-containing compounds in all HTL bio-crude oil samples produced at 240°C; the O2 class was the most abundant class obtained at 265 and 295°C. The total FAME content of the bio-crude oil was 15–37 wt.%, of which the most abundant were palmitic acid (C16:0), palmitoleic acid (C16:1), stearic acid (C18:0), and polyunsaturated fatty acids (C18:3N:3, C18:3N:6).

show abstract

“…Very few studies based on HTL have been considered for treating wastewater sludge presumably due to the technology maturity compared to other thermochemical technologies [79]. A comprehensive analysis by Xu et al [54] studied the effects of increasing temperatures on the product distribution and characteristics for the hydrothermal liquefaction of sewage sludge. They identified a reaction temperature of 340°C as optimal for maximizing bio-oil yield, and also discovered that the overall rise in temperature improved the bio-oil quality, while decreasing solid yield simultaneously.…”

Section: Hydrothermal Technologiesmentioning

confidence: 99%

Resource recovery and waste-to-energy from wastewater sludge via thermochemical conversion technologies in support of circular economy: a comprehensive review

2020

View full text Add to dashboard Cite

With the rapid rise in global population over the past decades, there has been a corresponding surge in demand for resources such as food and energy. As a consequence, the rate of waste generation and resultant pollution levels have risen drastically. Currently, most organic solid wastes are either land applied or sent to landfills, with the remaining fraction incinerated or anaerobically digested. However, with the current emphasis on the reduction of emissions, nutrient recovery, clean energy production and circular economy, it is important to revisit some of the conventional methods of treating these wastes and tap into their largely unrealized potential in terms of environmental and economic benefits. Wastewater sludge, with its high organic content and fairly constant supply, provides a great opportunity to implement some of these strategies using thermochemical conversion technologies, which are considered as one of the alternatives for upcycling such waste streams. This paper summarizes the results of prominent studies for valorizing wastewater sludge through thermochemical conversion technologies while drawing inferences and identifying relationships between different technical and operating parameters involved. This is followed by sections emphasizing the environmental and economic implications of these technologies, and their corresponding products in context of the broader fields of waste-to-energy, nutrient recycling and the progress towards a circular economy.

show abstract

Comprehensive evaluation on product characteristics of fast hydrothermal liquefaction of sewage sludge at different temperatures

Cited by 103 publications

References 51 publications

Energy recovery and nutrients recycling from municipal sewage sludge

Energy recovery and nutrients recycling from municipal sewage sludge

Hydrothermal Liquefaction of Food Waste: Effect of Process Parameters on Product Yields and Chemistry

Resource recovery and waste-to-energy from wastewater sludge via thermochemical conversion technologies in support of circular economy: a comprehensive review

Contact Info

Product

Resources

About