Effect of pre-treatments on hydrolysis and methane production potentials of by-products from meat-processing industry

Sami Luste; Sari Luostarinen; Mika Sillanpää

doi:10.1016/j.jhazmat.2008.08.002

Effect of pre-treatments on hydrolysis and methane production potentials of by-products from meat-processing industry

Sami Luste, Sari Luostarinen, Mika Sillanpää

University of Eastern Finland

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

85 Citations (Scopus)

Abstract

In this study, the effect of five pre-treatments (thermal, ultrasound, acid, base and bacterial product) on hydrolysis and methane production potentials of four by-products from meat-processing industry was studied. The bacterial product Liquid Certizyme 5™ increased soluble chemical oxygen demand (CODsol) of digestive tract content and drumsieve waste the most as compared to untreated material (62 and 96%, respectively), while ultrasound was the most effective to increase CODsol with dissolved air flotation (DAF) sludge (88%) and grease trap sludge (188%). In batch experiments, thermal treatment increased methane production potential of drumsieve waste, acid of grease trap sludge and all pre-treatments of DAF sludge. However, with all other pre-treatments, methane production potential was decreased compared to untreated materials, apparently due to inhibition by hydrolysis products and/or possible re-crystallization of some compounds. Methane production potentials from the untreated materials were as follows: digestive tract content 400 ± 50 m³ CH₄/t volatile solids (VS)_added, drumsieve waste 230 ± 20 m³ CH₄/tVS_added, DAF sludge 340 ± 17 m³ CH₄/tVS_added and grease trap sludge 900 ± 44 m³ CH₄/tVS_added.

Original language	English
Pages (from-to)	247-255
Number of pages	9
Journal	Journal of Hazardous Materials
Volume	164
Issue number	1
DOIs	https://doi.org/10.1016/j.jhazmat.2008.08.002
Publication status	Published - 15 May 2009
Externally published	Yes

Keywords

Anaerobic digestion
Hydrolysis
Meat-processing industry
Methane
Pre-treatment

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution
Health, Toxicology and Mutagenesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jhazmat.2008.08.002

Cite this

@article{6472d2f9166f425c881127d9ca9569c0,

title = "Effect of pre-treatments on hydrolysis and methane production potentials of by-products from meat-processing industry",

abstract = "In this study, the effect of five pre-treatments (thermal, ultrasound, acid, base and bacterial product) on hydrolysis and methane production potentials of four by-products from meat-processing industry was studied. The bacterial product Liquid Certizyme 5{\texttrademark} increased soluble chemical oxygen demand (CODsol) of digestive tract content and drumsieve waste the most as compared to untreated material (62 and 96%, respectively), while ultrasound was the most effective to increase CODsol with dissolved air flotation (DAF) sludge (88%) and grease trap sludge (188%). In batch experiments, thermal treatment increased methane production potential of drumsieve waste, acid of grease trap sludge and all pre-treatments of DAF sludge. However, with all other pre-treatments, methane production potential was decreased compared to untreated materials, apparently due to inhibition by hydrolysis products and/or possible re-crystallization of some compounds. Methane production potentials from the untreated materials were as follows: digestive tract content 400 ± 50 m3 CH4/t volatile solids (VS)added, drumsieve waste 230 ± 20 m3 CH4/tVSadded, DAF sludge 340 ± 17 m3 CH4/tVSadded and grease trap sludge 900 ± 44 m3 CH4/tVSadded.",

keywords = "Anaerobic digestion, Hydrolysis, Meat-processing industry, Methane, Pre-treatment",

author = "Sami Luste and Sari Luostarinen and Mika Sillanp{\"a}{\"a}",

year = "2009",

month = may,

day = "15",

doi = "10.1016/j.jhazmat.2008.08.002",

language = "English",

volume = "164",

pages = "247--255",

journal = "Journal of Hazardous Materials",

issn = "0304-3894",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Effect of pre-treatments on hydrolysis and methane production potentials of by-products from meat-processing industry

AU - Luste, Sami

AU - Luostarinen, Sari

AU - Sillanpää, Mika

PY - 2009/5/15

Y1 - 2009/5/15

N2 - In this study, the effect of five pre-treatments (thermal, ultrasound, acid, base and bacterial product) on hydrolysis and methane production potentials of four by-products from meat-processing industry was studied. The bacterial product Liquid Certizyme 5™ increased soluble chemical oxygen demand (CODsol) of digestive tract content and drumsieve waste the most as compared to untreated material (62 and 96%, respectively), while ultrasound was the most effective to increase CODsol with dissolved air flotation (DAF) sludge (88%) and grease trap sludge (188%). In batch experiments, thermal treatment increased methane production potential of drumsieve waste, acid of grease trap sludge and all pre-treatments of DAF sludge. However, with all other pre-treatments, methane production potential was decreased compared to untreated materials, apparently due to inhibition by hydrolysis products and/or possible re-crystallization of some compounds. Methane production potentials from the untreated materials were as follows: digestive tract content 400 ± 50 m3 CH4/t volatile solids (VS)added, drumsieve waste 230 ± 20 m3 CH4/tVSadded, DAF sludge 340 ± 17 m3 CH4/tVSadded and grease trap sludge 900 ± 44 m3 CH4/tVSadded.

AB - In this study, the effect of five pre-treatments (thermal, ultrasound, acid, base and bacterial product) on hydrolysis and methane production potentials of four by-products from meat-processing industry was studied. The bacterial product Liquid Certizyme 5™ increased soluble chemical oxygen demand (CODsol) of digestive tract content and drumsieve waste the most as compared to untreated material (62 and 96%, respectively), while ultrasound was the most effective to increase CODsol with dissolved air flotation (DAF) sludge (88%) and grease trap sludge (188%). In batch experiments, thermal treatment increased methane production potential of drumsieve waste, acid of grease trap sludge and all pre-treatments of DAF sludge. However, with all other pre-treatments, methane production potential was decreased compared to untreated materials, apparently due to inhibition by hydrolysis products and/or possible re-crystallization of some compounds. Methane production potentials from the untreated materials were as follows: digestive tract content 400 ± 50 m3 CH4/t volatile solids (VS)added, drumsieve waste 230 ± 20 m3 CH4/tVSadded, DAF sludge 340 ± 17 m3 CH4/tVSadded and grease trap sludge 900 ± 44 m3 CH4/tVSadded.

KW - Anaerobic digestion

KW - Hydrolysis

KW - Meat-processing industry

KW - Methane

KW - Pre-treatment

UR - http://www.scopus.com/inward/record.url?scp=61349144971&partnerID=8YFLogxK

U2 - 10.1016/j.jhazmat.2008.08.002

DO - 10.1016/j.jhazmat.2008.08.002

M3 - Article

C2 - 18805637

AN - SCOPUS:61349144971

SN - 0304-3894

VL - 164

SP - 247

EP - 255

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

IS - 1

ER -

Effect of pre-treatments on hydrolysis and methane production potentials of by-products from meat-processing industry

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this