Characteristics of input materials and its influence on the operation of the biogas plant

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F17%3A43912472" target="_blank" >RIV/62156489:43210/17:43912472 - isvavai.cz</a>

Alternative codes found

RIV/62156489:43410/17:43912472

Result on the web

<a href="https://mnet.mendelu.cz/mendelnet2017/mnet_2017_full.pdf" target="_blank" >https://mnet.mendelu.cz/mendelnet2017/mnet_2017_full.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Characteristics of input materials and its influence on the operation of the biogas plant

Original language description

Detailed monitoring of input material quality is underestimated at biogas plants. However, dry matter and organic dry matter content of material are changeable and have considerable influence on organic loading rate, biogas and methane production and thus on financial balance of biogas plant. The aim of this study is to monitor dry matter and organic dry matter content of input materials, organic loading rate, biogas quality and quantity at chosen agriculture biogas plant, which processes maize silage and pig manure, over long-term period (26 weeks). Samples of raw maize silage and liquid pig manure were collected weekly. Hypothesis predicted changeability of input materiál characteristics and its influence on biogas quality and quantity and on organic loading rate is confirmed. Determined dry matter content of maize silage ranges from 31.58 to 41.55% and pig slurry reaches dry matter content from 0.95 to 3.49%. Determined organic dry matter content of maize silage ranged from 95.47 to 97.15% of dry matter (30.4539.86% organic dry matter). Pig slurry reaches organic dry matter content from 60.32% to 81.87% of dry matter (0.572.6% organic dry matter). Based on real organic dry matter content of input material and information from operating diaries, organic loading rate is determined. Theoretical organic loading rate is calculated with assumed organic dry matter (32% maize silage and 5.5% pig manure). Confirmation of determined and theoretical organic loading rate shows that monitored biogas plant is usually overloaded. Higher organic loading rate does not lead to an increase of biogas and methane production, but rather to its reduction. So overloading represent wasting of input material and cause lower biogas production and quality which have negative influence on cash flow. This study is unique because of long-term monitoring of input material characteristics which are compared with calculated data.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

MendelNet 2017: Proceedings of International PhD Students Conference

ISBN

978-80-7509-529-9

ISSN

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e-ISSN

neuvedeno

Number of pages

5

Pages from-to

768-772

Publisher name

Mendelova univerzita v Brně

Place of publication

Brno

Event location

Brno

Event date

Nov 8, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000440194500138