Kinetics of faecal biomass hydrothermal carbonisation for hydrochar production

Danso‐Boateng, Eric; Holdich, Richard; Shama, Gilbert; Wheatley, Andrew D.; Sohail, M.; Martin, Simon J.

doi:10.1016/j.apenergy.2013.04.090

Cited by 104 publications

(67 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using this model, kinetic parameters of various biomass feedstock have been reported, such as synthetic faeces (A 0 = 1.5 × 10 7 min −1 , E a = 78 kJ·mol −1 ) [7], tannins (E a = 91 kJ·mol −1 ) [8] and glucose (A 0 = 7.7 × 10 8 s −1 , E a = 114 kJ·mol −1 ) [9].…”

Section: Basic Kinetic Modelsmentioning

confidence: 99%

See 1 more Smart Citation

Hydrothermal Carbonization: Modeling, Final Properties Design and Applications: A Review

et al. 2018

View full text Add to dashboard Cite

Active research on biomass hydrothermal carbonization (HTC) continues to demonstrate its advantages over other thermochemical processes, in particular the interesting benefits that are associated with carbonaceous solid products, called hydrochar (HC). The areas of applications of HC range from biofuel to doped porous material for adsorption, energy storage, and catalysis. At the same time, intensive research has been aimed at better elucidating the process mechanisms and kinetics, and how the experimental variables (temperature, time, biomass load, feedstock composition, as well as their interactions) affect the distribution between phases and their composition. This review provides an analysis of the state of the art on HTC, mainly with regard to the effect of variables on the process, the associated kinetics, and the characteristics of the solid phase (HC), as well as some of the more studied applications so far. The focus is on research made over the last five years on these topics.

show abstract

Section: Basic Kinetic Modelsmentioning

confidence: 99%

“…The most of them describe the reaction rate as a first-order reaction defined by the Arrhenius equation [7], which strictly should be written as:…”

Section: Basic Kinetic Modelsmentioning

confidence: 99%

Hydrothermal Carbonization: Modeling, Final Properties Design and Applications: A Review

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In the case of sewage sludge, the hydrothermal carbonization process was not so widely investigated, but studies were largely focused on the properties of solid product, energy recovery rate, hydrochar yields and its combustion characteristic, and improved dewaterability of sludge. The effects of hydrothermal carbonization were evaluated by varying the temperature and time [12][13][14][15][16][17][18][19]. In fact, regarding Polish conditions, there are no published results concerning the HTC of sewage sludge so far, that is why this technology can be named a novel pre-treatment method.…”

Section: Introductionmentioning

confidence: 99%

A novel method of sewage sludge pre-treatment - HTC

Wilk

2016

E3S Web Conf.

View full text Add to dashboard Cite

Abstract. The aim of the paper is to present a relatively new technology -hydrothermal carbonization (HTC) of municipal sewage sludge. The HTC process was conducted in a stainless steel, Zipperclave Stirred Reactor, with a volume of 1000 ml, equipped with a MagneDrive Agitator. The control panel provides a programme which regulates the heater temperature and mixer speed. The main parameters of the process were temperature (~200C), pressure (~1.5 MPa) and residence time (4, 7, 10, and 12 h). In order to understand the process, the physical, chemical, thermal, and structural characteristics of the solid product, hydrochar, was investigated. Therefore, the ultimate and proximate analyses, and HHV for raw material and obtained hydrochar are presented. The majority of carbon, of the initial present carbon, remained within hydrochar. TA analysis was used to detect the initial and final temperature for the combustion of raw material and hydrochar. This technique is very useful for predicting the combustion characteristics of carbonaceous material. When considering the use of hydrochar as a solid fuel, more energy can be derived from hydrochar than from e.g. incineration of waste, and its carbon emission should be less significant. Therefore, HTC can be an environmentally beneficial technique for the combustion process.

show abstract

“…Energy contents of the solid biofuel from primary sludge carbonized at 140-200°C for 4h ranged from 21.5 to 23.31 MJ/kg, and kept increasing with carbonization [13]. Figure 4 illustrates an energy balance of the proposed process (capacity 1t/batch) producing solid biofuel under a temperature of 200°C and holding time of 30 min.…”

Section: Thermal Hydrolysis and Sludge Dryingmentioning

confidence: 99%

Modeling and cost estimation of energy production from sludge

2017

View full text Add to dashboard Cite

Energy recovery from sewage sludge offers an opportunity for sustainable management of sewage sludge and energy. Anaerobic digestion and pyrolysis are among the most promising processes applicable for sewage sludge-to-energy conversion. Anaerobic digestion of sewage sludge forms methane-rich biogas, which can be utilized as fuel to offset heat and electricity consumption of the wastewater treatment sector. However, the digestion process has the efficiency limitation since it cannot sufficiently extract the energy from sewage sludge. The digested sludge is still energy profitable and it contains considerable organic matter, but poor in biodegradability. This paper presents a brief overview of anaerobic digestion, pyrolysis, and the combination of other processes with anaerobic digestion in the application to bio energy production from sewage sludge. An assessment of energy conversion of five sludge to energy pathways is also presented. The pathways via pyrolysis and the combination of anaerobic digestion, thermal hydrolysis, and thermal drying could achieve higher energy efficiency compared to other pathways.

show abstract

Kinetics of faecal biomass hydrothermal carbonisation for hydrochar production

Cited by 104 publications

References 18 publications

Hydrothermal Carbonization: Modeling, Final Properties Design and Applications: A Review

Hydrothermal Carbonization: Modeling, Final Properties Design and Applications: A Review

A novel method of sewage sludge pre-treatment - HTC

Modeling and cost estimation of energy production from sludge

Contact Info

Product

Resources

About