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Effects of solid-liquid separation on recovering residual methane and nitrogen from digested dairy cow manure

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Effects of solid-liquid separation on recovering residual methane and nitrogen from digested dairy cow manure. / Kaparaju, P. L N; Rintala, J. A.

julkaisussa: Bioresource Technology, Vuosikerta 99, Nro 1, 01.2008, s. 120-127.

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Kaparaju, P. L N ; Rintala, J. A. / Effects of solid-liquid separation on recovering residual methane and nitrogen from digested dairy cow manure. Julkaisussa: Bioresource Technology. 2008 ; Vuosikerta 99, Nro 1. Sivut 120-127.

Bibtex - Lataa

@article{0d35c19a08df47e2a99318b7d100b26a,
title = "Effects of solid-liquid separation on recovering residual methane and nitrogen from digested dairy cow manure",
abstract = "The feasibility of optimizing methane and nitrogen recovery of samples obtained from farm biogas digester (35 °C) and post-storage tank (where digested material is stored for 9-12 months) was studied by separating the materials into different fractions using 2, 1, 0.5 and 0.25 mm sieves. Mass-balances revealed that digested material mainly consists of <0.25 mm (60-69{\%}) and >2 mm (18-27{\%}) fractions, while fractions between 2 and 0.25 mm made the rest. Incubation of solid fractions >0.25 mm of digester material at 35 °C resulted in specific methane yields of 0.060-0.085 m3 kg-1 volatile solids (VS) during initial 30-50 d and 0.16-0.18 m3 kg-1 VS at the end of 340 d incubation. Similarly, fractions >0.25 mm of post-storage tank material produced 0.055-0.092 m3 kg-1 VS and 0.13-0.16 m3 kg-1 VS of methane after 30-50 d and after 250 d, respectively. Methane yields for fractions <0.25 mm of post-storage tank was 0.03 m3 kg-1 VS after 30-50 d and 0.05 m3 kg-1 VS after 250 d compared to 0.20 m3 kg-1 VS and 0.41 m3 kg-1 VS, respectively for the same fraction of digester material. Separation of digested cow manure into solids and liquid fractions to recover methane may be feasible only for post-storage tank material and not for digester material. Nitrogen management would not be feasible with neither material as total nitrogen and ammonium-nitrogen concentrations were equally distributed among the segregated fractions.",
keywords = "Anaerobic digestion, Digested material, Farm-scale digester, Fractionation, Methane, Post-storage tank",
author = "Kaparaju, {P. L N} and Rintala, {J. A.}",
year = "2008",
month = "1",
doi = "10.1016/j.biortech.2006.11.046",
language = "English",
volume = "99",
pages = "120--127",
journal = "Bioresource Technology",
issn = "0960-8524",
publisher = "ELSEVIER SCI LTD",
number = "1",

}

RIS (suitable for import to EndNote) - Lataa

TY - JOUR

T1 - Effects of solid-liquid separation on recovering residual methane and nitrogen from digested dairy cow manure

AU - Kaparaju, P. L N

AU - Rintala, J. A.

PY - 2008/1

Y1 - 2008/1

N2 - The feasibility of optimizing methane and nitrogen recovery of samples obtained from farm biogas digester (35 °C) and post-storage tank (where digested material is stored for 9-12 months) was studied by separating the materials into different fractions using 2, 1, 0.5 and 0.25 mm sieves. Mass-balances revealed that digested material mainly consists of <0.25 mm (60-69%) and >2 mm (18-27%) fractions, while fractions between 2 and 0.25 mm made the rest. Incubation of solid fractions >0.25 mm of digester material at 35 °C resulted in specific methane yields of 0.060-0.085 m3 kg-1 volatile solids (VS) during initial 30-50 d and 0.16-0.18 m3 kg-1 VS at the end of 340 d incubation. Similarly, fractions >0.25 mm of post-storage tank material produced 0.055-0.092 m3 kg-1 VS and 0.13-0.16 m3 kg-1 VS of methane after 30-50 d and after 250 d, respectively. Methane yields for fractions <0.25 mm of post-storage tank was 0.03 m3 kg-1 VS after 30-50 d and 0.05 m3 kg-1 VS after 250 d compared to 0.20 m3 kg-1 VS and 0.41 m3 kg-1 VS, respectively for the same fraction of digester material. Separation of digested cow manure into solids and liquid fractions to recover methane may be feasible only for post-storage tank material and not for digester material. Nitrogen management would not be feasible with neither material as total nitrogen and ammonium-nitrogen concentrations were equally distributed among the segregated fractions.

AB - The feasibility of optimizing methane and nitrogen recovery of samples obtained from farm biogas digester (35 °C) and post-storage tank (where digested material is stored for 9-12 months) was studied by separating the materials into different fractions using 2, 1, 0.5 and 0.25 mm sieves. Mass-balances revealed that digested material mainly consists of <0.25 mm (60-69%) and >2 mm (18-27%) fractions, while fractions between 2 and 0.25 mm made the rest. Incubation of solid fractions >0.25 mm of digester material at 35 °C resulted in specific methane yields of 0.060-0.085 m3 kg-1 volatile solids (VS) during initial 30-50 d and 0.16-0.18 m3 kg-1 VS at the end of 340 d incubation. Similarly, fractions >0.25 mm of post-storage tank material produced 0.055-0.092 m3 kg-1 VS and 0.13-0.16 m3 kg-1 VS of methane after 30-50 d and after 250 d, respectively. Methane yields for fractions <0.25 mm of post-storage tank was 0.03 m3 kg-1 VS after 30-50 d and 0.05 m3 kg-1 VS after 250 d compared to 0.20 m3 kg-1 VS and 0.41 m3 kg-1 VS, respectively for the same fraction of digester material. Separation of digested cow manure into solids and liquid fractions to recover methane may be feasible only for post-storage tank material and not for digester material. Nitrogen management would not be feasible with neither material as total nitrogen and ammonium-nitrogen concentrations were equally distributed among the segregated fractions.

KW - Anaerobic digestion

KW - Digested material

KW - Farm-scale digester

KW - Fractionation

KW - Methane

KW - Post-storage tank

U2 - 10.1016/j.biortech.2006.11.046

DO - 10.1016/j.biortech.2006.11.046

M3 - Article

VL - 99

SP - 120

EP - 127

JO - Bioresource Technology

JF - Bioresource Technology

SN - 0960-8524

IS - 1

ER -