Feasibility of anaerobic co-digestion of pig waste and paper sludge

Prathap Parameswaran; Bruce Rittmann

doi:10.1016/j.biortech.2012.07.116

Feasibility of anaerobic co-digestion of pig waste and paper sludge

Prathap Parameswaran, Bruce Rittmann

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

55 Scopus citations

Abstract

Pig waste (PW) and paper sludge (PS) possess complementary properties that can be combined for successful anaerobic digestion. Biochemical methane potential (BMP) tests revealed that a PW:PS 3:1 (v/v) ratio had the highest normalized CH₄-COD removal (54%), while PS had the lowest value (11%) and PW had 44%. Batch BMP tests revealed a significant decrease in lag times for methane production in the order of PW:PS 1:3 (14days)<PW:PS 1:1 (17days)<PW:PS 3:1 (20days)<PW (23days). Hydrolysis constants (k_hyd) were higher for all PW:PS combinations than for either of the individual waste streams: 0.004d^-1 (PS)<0.02d^-1 (PW)<0.024d^-1 (PW:PS 3:1)<0.03d^-1 (PW:PS 1:1)<0.05d^-1 (PW:PS 1:3). Semi-continuous reactors performing co-digestion of PW and PS at a 2:1 ratio showed 1.5 times higher methane production than baseline PW-only reactors, confirming the BMP results.

Original language	English (US)
Pages (from-to)	163-168
Number of pages	6
Journal	Bioresource Technology
Volume	124
DOIs	https://doi.org/10.1016/j.biortech.2012.07.116
State	Published - Nov 1 2012

Keywords

Co-digestion
Hydrolysis
Methanogenesis
Paper sludge
Pig waste

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

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10.1016/j.biortech.2012.07.116

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title = "Feasibility of anaerobic co-digestion of pig waste and paper sludge",

abstract = "Pig waste (PW) and paper sludge (PS) possess complementary properties that can be combined for successful anaerobic digestion. Biochemical methane potential (BMP) tests revealed that a PW:PS 3:1 (v/v) ratio had the highest normalized CH4-COD removal (54%), while PS had the lowest value (11%) and PW had 44%. Batch BMP tests revealed a significant decrease in lag times for methane production in the order of PW:PS 1:3 (14days)<PW:PS 1:1 (17days)<PW:PS 3:1 (20days)<PW (23days). Hydrolysis constants (khyd) were higher for all PW:PS combinations than for either of the individual waste streams: 0.004d-1 (PS)<0.02d-1 (PW)<0.024d-1 (PW:PS 3:1)<0.03d-1 (PW:PS 1:1)<0.05d-1 (PW:PS 1:3). Semi-continuous reactors performing co-digestion of PW and PS at a 2:1 ratio showed 1.5 times higher methane production than baseline PW-only reactors, confirming the BMP results.",

keywords = "Co-digestion, Hydrolysis, Methanogenesis, Paper sludge, Pig waste",

author = "Prathap Parameswaran and Bruce Rittmann",

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KW - Paper sludge

KW - Pig waste

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Feasibility of anaerobic co-digestion of pig waste and paper sludge

Abstract

Keywords

ASJC Scopus subject areas

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