Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 539499
Title Location of the inlets and outlets of Chinese dome digesters to mitigate biogas emission
Author(s) Jegede, Abiodun O.; Bruning, Harry; Zeeman, Grietje
Source Biosystems Engineering 174 (2018). - ISSN 1537-5110 - p. 153 - 158.
DOI https://doi.org/10.1016/j.biosystemseng.2018.07.006
Department(s) Sub-department of Environmental Technology
WIMEK
Publication type Refereed Article in a scientific journal
Publication year 2018
Keyword(s) Chinese dome digester - Expansion chamber and emission - Inlet - Model - Outlet
Abstract

A model based on three equations was developed and validated for the design of the inlet and outlet of the Chinese dome digester (CDD) to prevent biogas emission or leakage. The model was implemented in MATLAB software and validated with results from a pilot study. Biogas and temperature data from the pilot experiment were used to validate the model and the results fitted well with the experimental data at low gas volume (<20 mols) but with some slight deviation at high gas volume. The model predicted the reactor pressure (PG) and the slurry displacement in the expansion chamber, inlet pipe head (h) and head inside the digester (hG). The relationship between the gas and h was not linear at high gas volume (>20 mols). The model can be used to predict the optimal size of the CDD for daily biogas storage based on different reactor and expansion chamber sizes, in order to mitigate the emission of surplus biogas from the inlet and outlet pipes.

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