Hydrothermal carbonisation of poultry litter: Effects of initial pH on yields and chemical properties of hydrochars

Bashir M. Ghanim; Witold Kwapinski; James J. Leahy

doi:10.1016/j.biortech.2017.04.025

Hydrothermal carbonisation of poultry litter: Effects of initial pH on yields and chemical properties of hydrochars

Bashir M. Ghanim, Witold Kwapinski, James J. Leahy

Department of Chemical Sciences

University of Limerick

Research output: Contribution to journal › Article › peer-review

Abstract

In this study, hydrothermal carbonisation (HTC) of poultry litter (PL) was carried out to evaluate the impact of initial pH using acetic acid (CH₃COOH) or sulfuric acid (H₂SO₄) on the yields and properties of hydrochar (HC). The PL samples were treated by HTC at various initial pH and at 250 °C for 2 h. The HCs produced were characterized by ultimate, proximate and fibre analyses as well as heating value and surface area measurements. The results indicated that undertaking HTC in the presence of acids (CH₃COOH, H₂SO₄) significantly affects the yields and properties of HC. The C content and HHV of the HC increased with decreasing initial pH. In the presence of H₂SO₄, the hydrochar yield (HY) increased while the ash content was significantly reduced. The lowest ash content and the highest HY were measured in the HC produced from the suspension with an initial pH of 2 using H₂SO₄.

Original language	English
Pages (from-to)	78-85
Number of pages	8
Journal	Bioresource Technology
Volume	238
DOIs	https://doi.org/10.1016/j.biortech.2017.04.025
Publication status	Published - 2017

Keywords

Acetic acid
Hydrochar
Hydrothermal carbonisation
Poultry litter
Sulphuric acid

Access to Document

10.1016/j.biortech.2017.04.025

Cite this

@article{a90db791897548b09eaa7216fe10564c,

title = "Hydrothermal carbonisation of poultry litter: Effects of initial pH on yields and chemical properties of hydrochars",

abstract = "In this study, hydrothermal carbonisation (HTC) of poultry litter (PL) was carried out to evaluate the impact of initial pH using acetic acid (CH3COOH) or sulfuric acid (H2SO4) on the yields and properties of hydrochar (HC). The PL samples were treated by HTC at various initial pH and at 250 °C for 2 h. The HCs produced were characterized by ultimate, proximate and fibre analyses as well as heating value and surface area measurements. The results indicated that undertaking HTC in the presence of acids (CH3COOH, H2SO4) significantly affects the yields and properties of HC. The C content and HHV of the HC increased with decreasing initial pH. In the presence of H2SO4, the hydrochar yield (HY) increased while the ash content was significantly reduced. The lowest ash content and the highest HY were measured in the HC produced from the suspension with an initial pH of 2 using H2SO4.",

keywords = "Acetic acid, Hydrochar, Hydrothermal carbonisation, Poultry litter, Sulphuric acid",

author = "Ghanim, {Bashir M.} and Witold Kwapinski and Leahy, {James J.}",

note = "Publisher Copyright: {\textcopyright} 2017",

year = "2017",

doi = "10.1016/j.biortech.2017.04.025",

language = "English",

volume = "238",

pages = "78--85",

journal = "Bioresource Technology",

issn = "0960-8524",

}

TY - JOUR

T1 - Hydrothermal carbonisation of poultry litter

T2 - Effects of initial pH on yields and chemical properties of hydrochars

AU - Ghanim, Bashir M.

AU - Kwapinski, Witold

AU - Leahy, James J.

PY - 2017

Y1 - 2017

N2 - In this study, hydrothermal carbonisation (HTC) of poultry litter (PL) was carried out to evaluate the impact of initial pH using acetic acid (CH3COOH) or sulfuric acid (H2SO4) on the yields and properties of hydrochar (HC). The PL samples were treated by HTC at various initial pH and at 250 °C for 2 h. The HCs produced were characterized by ultimate, proximate and fibre analyses as well as heating value and surface area measurements. The results indicated that undertaking HTC in the presence of acids (CH3COOH, H2SO4) significantly affects the yields and properties of HC. The C content and HHV of the HC increased with decreasing initial pH. In the presence of H2SO4, the hydrochar yield (HY) increased while the ash content was significantly reduced. The lowest ash content and the highest HY were measured in the HC produced from the suspension with an initial pH of 2 using H2SO4.

AB - In this study, hydrothermal carbonisation (HTC) of poultry litter (PL) was carried out to evaluate the impact of initial pH using acetic acid (CH3COOH) or sulfuric acid (H2SO4) on the yields and properties of hydrochar (HC). The PL samples were treated by HTC at various initial pH and at 250 °C for 2 h. The HCs produced were characterized by ultimate, proximate and fibre analyses as well as heating value and surface area measurements. The results indicated that undertaking HTC in the presence of acids (CH3COOH, H2SO4) significantly affects the yields and properties of HC. The C content and HHV of the HC increased with decreasing initial pH. In the presence of H2SO4, the hydrochar yield (HY) increased while the ash content was significantly reduced. The lowest ash content and the highest HY were measured in the HC produced from the suspension with an initial pH of 2 using H2SO4.

KW - Acetic acid

KW - Hydrochar

KW - Hydrothermal carbonisation

KW - Poultry litter

KW - Sulphuric acid

UR - http://www.scopus.com/inward/record.url?scp=85018494161&partnerID=8YFLogxK

U2 - 10.1016/j.biortech.2017.04.025

DO - 10.1016/j.biortech.2017.04.025

M3 - Article

C2 - 28433917

AN - SCOPUS:85018494161

SN - 0960-8524

VL - 238

SP - 78

EP - 85

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Hydrothermal carbonisation of poultry litter: Effects of initial pH on yields and chemical properties of hydrochars

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this