Hydrothermal carbonization of anaerobically digested maize silage

Mumme, Jan; Eckervogt, Lion; Pielert, Judith; Diakité, Mamadou; Rupp, Fabian; Kern, Jürgen

doi:10.1016/j.biortech.2011.06.099

Cited by 357 publications

(176 citation statements)

References 25 publications

Supporting

Mentioning

128

Contrasting

Unclassified

Order By: Relevance

“…Thermal hydrolysis is often used prior to anaerobic digestion at temperatures in 26 the range 160-170 o C resulting in enhanced biogas yields (Mendez et al, 2015). 27Hydrothermal carbonisation (HTC) is operated at 180-250 °C and pressure between 2-10 28MPa, and produces a carbon-rich bio-coal (Mumme et al, 2011). Hydrothermal liquefaction 29 (HTL) is operated at 280-370 °C and pressures ranging from 10-25 MPa and produces a 30 synthetic bio-crude (Biller et al, 2012).…”

mentioning

confidence: 99%

A comparison of product yields and inorganic content in process streams following thermal hydrolysis and hydrothermal processing of microalgae, manure and digestate

Ekpo

Ross

Camargo‐Valero

et al. 2016

Bioresource Technology

200

118

View full text Add to dashboard Cite

ReuseUnless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. Thermal hydrolysis and hydrothermal processing have shown promise for converting biomass 10 into higher energy density fuels. Both approaches can facilitate the extraction of inorganics in 11 to the aqueous process waters. This study compares the behaviour of microalgae, digestate, 12 swine and chicken manure by thermal hydrolysis and hydrothermal processing at increasing 13 process severity. Thermal hydrolysis was performed at 170 °C, hydrothermal carbonization 14 (HTC) was performed at 250 °C, hydrothermal liquefaction (HTL) was performed at 350 °C 15 and supercritical water gasification (SCWG) was performed at 500 °C in a batch reactor. The 16 level of nitrogen, phosphorus and potassium in the product streams was measured for each 17 feedstock. Nitrogen is present in the aqueous phase as organic-N and NH3-N. The proportion 18 of organic N increases the lower the temperature. The extraction of phosphorus is strongly 19 linked to the presence of inorganics such as Ca, Mg and Fe in the starting feedstock. 20 A comparison of product yields and inorganic content in process streamsMicroalgae and chicken manure release phosphorus more easily than the other feedstocks. 21Keywords: hydrothermal processing, NPK, manure, microalgae, digestate 22 23 Introduction 24Hydrothermal processing of biomass can be utilised as either a pre-treatment or for energy 25 densification. Thermal hydrolysis is often used prior to anaerobic digestion at temperatures in 26 the range 160-170 o C resulting in enhanced biogas yields (Mendez et al., 2015). 27Hydrothermal carbonisation (HTC) is operated at 180-250 °C and pressure between 2-10 28MPa, and produces a carbon-rich bio-coal (Mumme et al., 2011). Hydrothermal liquefaction 29 (HTL) is operated at 280-370 °C and pressures ranging from 10-25 MPa and produces a 30 synthetic bio-crude (Biller et al., 2012). Supercritical water gasification (SCWG) is operated 1 at temperatures above 450 °C and pressure above the critical point of water (22 MPa) 2 producing a syngas containing H2, CO2 and CH4 (Toor et al., 2011). There is a growing 3 interest in the recovery of nutrients from wet wastes such as manures and bio-solids and 4 hydrothermal processing has been proposed to facilitate...

show abstract

mentioning

confidence: 99%

A comparison of product yields and inorganic content in process streams following thermal hydrolysis and hydrothermal processing of microalgae, manure and digestate

Ekpo

Ross

Camargo‐Valero

et al. 2016

Bioresource Technology

200

118

View full text Add to dashboard Cite

show abstract

“…Previous works designated temperature as the parameter with the highest impact on composition and built-up of hydrochar from anaerobic digestate [17,18]. Within this work a clear description of the impact of the process parameters (time, temperature, pH) is made.…”

Section: Objectivementioning

confidence: 99%

Optimization of Nutrient and Carbon Recovery from Anaerobic Digestate via Hydrothermal Carbonization and Investigation of the Influence of the Process Parameters

Stutzenstein

Bacher

Rosenau

et al. 2017

Waste Biomass Valor

View full text Add to dashboard Cite

show abstract

“…The biomass type and temperature play a vital role in hydrochar surface area by controlling the amount of pores by cracking the basal structural sheets of hydrochar (Novak et al 2009;Mumme et al 2011). After chemical activation with H3PO4, the surface area and pore volume increased substantially.…”

Section: Characterizationmentioning

confidence: 99%

Hydrothermally Treated Banana Empty Fruit Bunch Fiber Activated Carbon for Pb(II) and Zn(II) Removal

Adebisi¹,

Chowdhury²,

Hamid³

et al. 2016

BioResources

View full text Add to dashboard Cite

Activated carbon was produced by chemical activation of hydrothermally carbonized (HTC) banana empty fruit bunch (BEFB), using phosphoric acid (H3PO4) as the activating agent. The activation process was optimized using a Box-Behnken factorial design (BBD), with an outcome of 17 different experiments under the predefined conditions. Three different parameters (activation temperature (x1), activation time (x2), and the concentration of activating acid (x3)) were analyzed with respect to their influence on maximum adsorption percentage for divalent cations, Pb(II) (Y1) and Zn(II) (Y2), and carbon yield (Y3). All process parameters had strong positive effects on adsorption capacity up to a certain limit. The specific surface area of the hydrochar (HTC) was enhanced substantially after the activation process. Scanning electron microscopy (SEM) revealed that the morphology of the BEFB-based char changed noticeably after the acid impregnation and activation process. The Langmuir maximum monolayer adsorption capacity for Pb (II) and Zn (II) cations was 74.62 mg/g and 77.51 mg/g, respectively. Equilibrium isotherm data were in agreement with the Langmuir model. Thermodynamic characterization revealed that the equilibrium system was endothermic and spontaneous.

show abstract

Hydrothermal carbonization of anaerobically digested maize silage

Cited by 357 publications

References 25 publications

A comparison of product yields and inorganic content in process streams following thermal hydrolysis and hydrothermal processing of microalgae, manure and digestate

A comparison of product yields and inorganic content in process streams following thermal hydrolysis and hydrothermal processing of microalgae, manure and digestate

Optimization of Nutrient and Carbon Recovery from Anaerobic Digestate via Hydrothermal Carbonization and Investigation of the Influence of the Process Parameters

Hydrothermally Treated Banana Empty Fruit Bunch Fiber Activated Carbon for Pb(II) and Zn(II) Removal

Contact Info

Product

Resources

About