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204190

EFFECT OF DIFFERENT STIRRING SPEEDS AND DIGESTION MIXTURES ON BIOGAS PRODUCTION

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Last updated: 04 Jan 2025

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Abstract

A stainless steel horizontal digester for biogas production was designed, constructed and installed in the biogas laboratory of the Agricultural Engineering Department, Faculty of Agriculture, Mansoura University to investigate the effect of different digestion mixtures (mixture 1(100% cow manure), mixture 2 (75% cow manure + 25% poultry droppings), mixture 3(50% cow manure + 50% poultry droppings), and mixture 4 (25% cow manure + 75% poultry droppings)) under different stirring speeds (40, 60, and 80 rpm) on biogas production as a source of renewable energy. Digestion temperature, stirring time and influent total solids were adjusted at 40 oC and 15 minutes / 4 hours, 10% respectively. The hydraulic retention time (HRT) was 45 days. During batch process anaerobic digestion of all digestion mixtures, daily biogas production and methane content were measured. The biogas calorific value were determined. Biochemical oxygen demand (BOD) of influent and effluent slurries was determined to calculate the digestion process efficiency. Chemical analysis for different influents and effluents was also carried out. Conclusively, the obtained results indicated that, biogas production of mixture 3 is more than other mixtures. It is advised to use stirring speed of 80 rpm with stirring time 15 minutes every 4 hours at total solid of 10%, digestion temperature 40 oC and 45 HRT. According to chemical analysis, the effluent slurry could be used as a good organic fertilizer.  

DOI

10.21608/jpd.2021.204190

Keywords

Biogas, anaerobic digestion, Stirring speed, stirring time, Temperature, Cow manure, Poultry droppings

Authors

First Name

Esraa

Last Name

Sharaby

MiddleName

-

Affiliation

Soil and Water Science Department, Faculty of Technology and Development, Zagazig University, Egypt

Email

esraagamal5991@gmail.com

City

Faculty of Technology and Development, Zagazig University, Egypt

Orcid

-

First Name

Yehia

Last Name

El –Hadidi

MiddleName

-

Affiliation

Engineering Agricultural Department, Faculty of Agric., Mansoura University, Egypt

Email

ymelhadidi56@yahoo.com

City

Faculty of Agric., Mansoura University, Egypt

Orcid

-

First Name

Essam

Last Name

El – Hanafy

MiddleName

-

Affiliation

Soil and Water Science Department, Faculty of Technology and Development, Zagazig University, Egypt

Email

-

City

-

Orcid

-

Volume

26

Article Issue

4

Related Issue

20763

Issue Date

2021-10-01

Receive Date

2021-08-15

Publish Date

2021-10-01

Page Start

939

Page End

953

Print ISSN

1110-2543

Online ISSN

2682-3322

Article File

JPD_Volume 26_Issue 4_Pages 939-953.pdf

PDF . 1.0MB

Link

https://jpd.journals.ekb.eg/article_204190.html

Detail API

https://jpd.journals.ekb.eg/service?article_code=204190

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22

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Original Article

Type Code

867

Publication Type

Journal

Publication Title

Journal of Productivity and Development

Publication Link

https://jpd.journals.ekb.eg/

MainTitle

EFFECT OF DIFFERENT STIRRING SPEEDS AND DIGESTION MIXTURES ON BIOGAS PRODUCTION

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Article

Created At

22 Jan 2023