Thermophilic anaerobic digestion of pulp and paper mill primary sludge and co-digestion of primary and secondary sludge

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Thermophilic anaerobic digestion of pulp and paper mill primary sludge and co-digestion of primary and secondary sludge. / Bayr, Suvi; Rintala, Jukka.

In: Water Research, Vol. 46, No. 15, 01.10.2012, p. 4713-4720.

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

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@article{6fda2dfefd9348e0a5fc6696965e9a1d,

title = "Thermophilic anaerobic digestion of pulp and paper mill primary sludge and co-digestion of primary and secondary sludge",

abstract = "Anaerobic digestion of pulp and paper mill primary sludge and co-digestion of primary and secondary sludge were studied for the first time in semi-continuously fed continuously stirred tank reactors (CSTR) in thermophilic conditions. Additionally, in batch experiments, methane potentials of 210 and 230 m 3CH 4/t volatile solids (VS) added were obtained for primary, and 50 and 100 m 3CH 4/tVS added for secondary sludge at 35 °C and 55 °C, respectively. Anaerobic digestion of primary sludge was shown to be feasible with organic loading rates (OLR) of 1-1.4 kgVS/m 3d and hydraulic retention times (HRT) of 16-32 d resulting in methane yields of 190-240 m 3CH 4/tVS fed. Also the highest tested OLR of 2 kgVS/m 3d and the shortest HRT of 14-16 d could be feasible, if pH stability is confirmed. Co-digestion of primary and secondary sludge with an OLR of 1 kgVS/m 3d and HRTs of 25-31 d resulted in methane yields of 150-170 m 3CH 4/tVS fed. In the digestion processes, cellulose and hemicellulose degraded while lignin did not. pH adjustment and nitrogen deficiency needs to be considered when planning anaerobic digestion of pulp and paper mill wastewater sludges. {\circledC} 2012 Elsevier Ltd.",

keywords = "ADF, ADL, Anaerobic digestion, CSTR, FM, HRT, Methane, NDF, OLR, Primary sludge, Pulp and paper mill, SCOD, Secondary sludge, Thermophilic, TKN, TS, VFA, VS",

author = "Suvi Bayr and Jukka Rintala",

note = "Contribution: organisation=keb bio,FACT1=1",

year = "2012",

month = "10",

day = "1",

doi = "10.1016/j.watres.2012.06.033",

language = "English",

volume = "46",

pages = "4713--4720",

journal = "Water Research",

issn = "0043-1354",

publisher = "PERGAMON-ELSEVIER SCIENCE LTD",

number = "15",

}

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TY - JOUR

T1 - Thermophilic anaerobic digestion of pulp and paper mill primary sludge and co-digestion of primary and secondary sludge

AU - Bayr, Suvi

AU - Rintala, Jukka

N1 - Contribution: organisation=keb bio,FACT1=1

PY - 2012/10/1

Y1 - 2012/10/1

N2 - Anaerobic digestion of pulp and paper mill primary sludge and co-digestion of primary and secondary sludge were studied for the first time in semi-continuously fed continuously stirred tank reactors (CSTR) in thermophilic conditions. Additionally, in batch experiments, methane potentials of 210 and 230 m 3CH 4/t volatile solids (VS) added were obtained for primary, and 50 and 100 m 3CH 4/tVS added for secondary sludge at 35 °C and 55 °C, respectively. Anaerobic digestion of primary sludge was shown to be feasible with organic loading rates (OLR) of 1-1.4 kgVS/m 3d and hydraulic retention times (HRT) of 16-32 d resulting in methane yields of 190-240 m 3CH 4/tVS fed. Also the highest tested OLR of 2 kgVS/m 3d and the shortest HRT of 14-16 d could be feasible, if pH stability is confirmed. Co-digestion of primary and secondary sludge with an OLR of 1 kgVS/m 3d and HRTs of 25-31 d resulted in methane yields of 150-170 m 3CH 4/tVS fed. In the digestion processes, cellulose and hemicellulose degraded while lignin did not. pH adjustment and nitrogen deficiency needs to be considered when planning anaerobic digestion of pulp and paper mill wastewater sludges. © 2012 Elsevier Ltd.

AB - Anaerobic digestion of pulp and paper mill primary sludge and co-digestion of primary and secondary sludge were studied for the first time in semi-continuously fed continuously stirred tank reactors (CSTR) in thermophilic conditions. Additionally, in batch experiments, methane potentials of 210 and 230 m 3CH 4/t volatile solids (VS) added were obtained for primary, and 50 and 100 m 3CH 4/tVS added for secondary sludge at 35 °C and 55 °C, respectively. Anaerobic digestion of primary sludge was shown to be feasible with organic loading rates (OLR) of 1-1.4 kgVS/m 3d and hydraulic retention times (HRT) of 16-32 d resulting in methane yields of 190-240 m 3CH 4/tVS fed. Also the highest tested OLR of 2 kgVS/m 3d and the shortest HRT of 14-16 d could be feasible, if pH stability is confirmed. Co-digestion of primary and secondary sludge with an OLR of 1 kgVS/m 3d and HRTs of 25-31 d resulted in methane yields of 150-170 m 3CH 4/tVS fed. In the digestion processes, cellulose and hemicellulose degraded while lignin did not. pH adjustment and nitrogen deficiency needs to be considered when planning anaerobic digestion of pulp and paper mill wastewater sludges. © 2012 Elsevier Ltd.

KW - ADF

KW - ADL

KW - Anaerobic digestion

KW - CSTR

KW - FM

KW - HRT

KW - Methane

KW - NDF

KW - OLR

KW - Primary sludge

KW - Pulp and paper mill

KW - SCOD

KW - Secondary sludge

KW - Thermophilic

KW - TKN

KW - TS

KW - VFA

KW - VS

UR - http://www.scopus.com/inward/record.url?scp=84864052991&partnerID=8YFLogxK

U2 - 10.1016/j.watres.2012.06.033

DO - 10.1016/j.watres.2012.06.033

M3 - Article

VL - 46

SP - 4713

EP - 4720

JO - Water Research

JF - Water Research

SN - 0043-1354

IS - 15

ER -

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