Effect of additives on process stability of mesophilic anaerobic monodigestion of pig slaughterhouse waste

Suvi Bayr; Outi Pakarinen; Aki Korppoo; Saku Liuksia; Ari Väisänen; Prasad Kaparaju; Jukka Rintala

doi:10.1016/j.biortech.2012.06.009

Effect of additives on process stability of mesophilic anaerobic monodigestion of pig slaughterhouse waste

Suvi Bayr^*
, Outi Pakarinen
, Aki Korppoo
, Saku Liuksia
, Ari Väisänen
, Prasad Kaparaju
, Jukka Rintala

^*Corresponding author for this work

Not published at VTT

University of Jyväskylä
Kemira Oyj
Tampere University

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

58 Citations (Scopus)

Abstract

The effect of two additives on anaerobic monodigestion of pig slaughterhouse waste was studied in three laboratory scale continuously stirred tank reactors (CSTRs) operated for 242-284days at 35°C. A higher organic loading rate (OLR), namely 2.25kg volatile solids (VS)/m³d with a hydraulic retention time (HRT) of 30d was feasible with an additive containing Fe, HCl and trace elements while an OLR of 1.5kg VS/m³d (HRT 30d) led to instabilities in CSTR with an additive consisting of Fe and HCl and in CSTR without additives. Methane yields of ca. 700dm³ CH₄/kg VS_fed were obtained in all reactors under stable conditions. Both additives decreased H₂S concentration of the biogas below detection limit 0.5ppm while in a control reactor H₂S concentration was up to 1900ppm. In conclusion, the results suggest the possibility that additives may facilitate higher OLRs in monodigestion of pig slaughterhouse waste.

Original language	English
Pages (from-to)	106-113
Number of pages	8
Journal	Bioresource Technology
Volume	120
DOIs	https://doi.org/10.1016/j.biortech.2012.06.009
Publication status	Published - Sept 2012
MoE publication type	A1 Journal article-refereed

Keywords

Additives
Anaerobic digestion
Mesophilic
Process stability
Slaughterhouse waste

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10.1016/j.biortech.2012.06.009

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title = "Effect of additives on process stability of mesophilic anaerobic monodigestion of pig slaughterhouse waste",

abstract = "The effect of two additives on anaerobic monodigestion of pig slaughterhouse waste was studied in three laboratory scale continuously stirred tank reactors (CSTRs) operated for 242-284days at 35°C. A higher organic loading rate (OLR), namely 2.25kg volatile solids (VS)/m3d with a hydraulic retention time (HRT) of 30d was feasible with an additive containing Fe, HCl and trace elements while an OLR of 1.5kg VS/m3d (HRT 30d) led to instabilities in CSTR with an additive consisting of Fe and HCl and in CSTR without additives. Methane yields of ca. 700dm3 CH4/kg VSfed were obtained in all reactors under stable conditions. Both additives decreased H2S concentration of the biogas below detection limit 0.5ppm while in a control reactor H2S concentration was up to 1900ppm. In conclusion, the results suggest the possibility that additives may facilitate higher OLRs in monodigestion of pig slaughterhouse waste.",

keywords = "Additives, Anaerobic digestion, Mesophilic, Process stability, Slaughterhouse waste",

author = "Suvi Bayr and Outi Pakarinen and Aki Korppoo and Saku Liuksia and Ari V{\"a}is{\"a}nen and Prasad Kaparaju and Jukka Rintala",

year = "2012",

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doi = "10.1016/j.biortech.2012.06.009",

language = "English",

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T1 - Effect of additives on process stability of mesophilic anaerobic monodigestion of pig slaughterhouse waste

AU - Bayr, Suvi

AU - Pakarinen, Outi

AU - Korppoo, Aki

AU - Liuksia, Saku

AU - Väisänen, Ari

AU - Kaparaju, Prasad

AU - Rintala, Jukka

PY - 2012/9

Y1 - 2012/9

N2 - The effect of two additives on anaerobic monodigestion of pig slaughterhouse waste was studied in three laboratory scale continuously stirred tank reactors (CSTRs) operated for 242-284days at 35°C. A higher organic loading rate (OLR), namely 2.25kg volatile solids (VS)/m3d with a hydraulic retention time (HRT) of 30d was feasible with an additive containing Fe, HCl and trace elements while an OLR of 1.5kg VS/m3d (HRT 30d) led to instabilities in CSTR with an additive consisting of Fe and HCl and in CSTR without additives. Methane yields of ca. 700dm3 CH4/kg VSfed were obtained in all reactors under stable conditions. Both additives decreased H2S concentration of the biogas below detection limit 0.5ppm while in a control reactor H2S concentration was up to 1900ppm. In conclusion, the results suggest the possibility that additives may facilitate higher OLRs in monodigestion of pig slaughterhouse waste.

AB - The effect of two additives on anaerobic monodigestion of pig slaughterhouse waste was studied in three laboratory scale continuously stirred tank reactors (CSTRs) operated for 242-284days at 35°C. A higher organic loading rate (OLR), namely 2.25kg volatile solids (VS)/m3d with a hydraulic retention time (HRT) of 30d was feasible with an additive containing Fe, HCl and trace elements while an OLR of 1.5kg VS/m3d (HRT 30d) led to instabilities in CSTR with an additive consisting of Fe and HCl and in CSTR without additives. Methane yields of ca. 700dm3 CH4/kg VSfed were obtained in all reactors under stable conditions. Both additives decreased H2S concentration of the biogas below detection limit 0.5ppm while in a control reactor H2S concentration was up to 1900ppm. In conclusion, the results suggest the possibility that additives may facilitate higher OLRs in monodigestion of pig slaughterhouse waste.

KW - Additives

KW - Anaerobic digestion

KW - Mesophilic

KW - Process stability

KW - Slaughterhouse waste

UR - https://www.scopus.com/pages/publications/84863533359

U2 - 10.1016/j.biortech.2012.06.009

DO - 10.1016/j.biortech.2012.06.009

M3 - Article

C2 - 22784960

AN - SCOPUS:84863533359

SN - 0960-8524

VL - 120

SP - 106

EP - 113

JO - Bioresource Technology

JF - Bioresource Technology

ER -

Effect of additives on process stability of mesophilic anaerobic monodigestion of pig slaughterhouse waste

Abstract

Keywords

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