READ ME File For 'Dataset_for_Predicting_pH_in_CO2_biomethanisation'

Dataset DOI: 10.5258/SOTON/D1343

ReadMe Author: Yue Zhang, University of Southampton [ORCID ID 0000-0002-5068-2260]

This dataset supports the publication:
AUTHORS: Bing Tao, Yue Zhang, Sonia Heaven and Charles J Banks
TITLE: Predicting pH rise as a control measure for integration of CO2 biomethanisation with anaerobic digestion
JOURNAL: Applied Energy
PAPER DOI IF KNOWN:


This dataset contains data obtained to construct Fig. 2-10 and Fig. S1-S6


The figures are as follows:

Fig. 2  TAN concentration against time in digesters fed with synthetic feed
Fig. 3  Biogas methane content (a), pH (b) and volumetric methane production (c) in digesters with TAN 2 g N L-1
Fig. 4  Variations in total VFA concentration over time in digesters operated at TAN 2 and 3 g N L-1
Fig. 5  Biogas methane content (a), pH (b) and volumetric methane production (c) in digesters with TAN 3 g N L-1
Fig. 6  Biogas methane content, pH and volumetric methane production in CO2 biomethanisation integrated with food waste digestion
Fig. 7  Hourly values for H2, CO2 and CH4 content in biogas storage bag of food waste digester with CO2 biomethanisation (taken on day 245 under stable operational conditions)
Fig. 8  Trends in pH against PCO2 in digesters with: a) 2 g N L-1, b) 3 g N L-1 and c) food waste
Fig. 9  Results for introduction of H2 addition to a laboratory-scale fermenter fed on wastewater biosolids: (a) pH versus PCO2 trends from rapid determination assay, theoretical model and experimental data; (b) pH and biogas methane content during experimental period
Fig. 10 (a) Evolution of pH as a function of time in food waste digester under different operating modes (hybrid in-situ and ex-situ biomethanisation 0 - 72 h, in-situ biomethanisation only 72 - 144 h and traditional anaerobic digestion without H2 addition 144 - 216 h); and (b) pH variations under each operating mode
Fig. S1 Comparison of experimental pH versus PCO2 profile for digesters in [1] with simulated profile using Eq. 17 with TAN concentration taken as equal to the baseline value before CO2 biomethanisation
Fig. S2 Comparison of experimental pH versus PCO2 profile with simulated profiles at different TAN concentrations using Eq. S1 and S2, and simulated profile using Eq. 17 taking TAN concentration equal to the baseline value before CO2 biomethanisation
Fig. S3 Comparison of experimental pH versus PCO2 profile with simulated profiles at different TAN concentrations taking phosphate buffer into account, and simulated profile using Eq. 17 taking TAN concentration equal to the baseline value before CO2 biomethanisation
Fig. S4 Comparison of experimental pH versus PCO2 profile for digesters at 0.75 g N L-1 with simulated profiles based on Eq. S1 (considering TAN buffer only) and Eq. S10 (considering both TAN and phosphate buffer) during CO2 biomethanisation
Fig. S5 Comparison of experimental pH versus PCO2 profile for digesters at 2 g N L-1 with simulated profiles based on Eq. S1 (considering TAN buffer only) and Eq. S10 (considering both TAN and phosphate buffer) during CO2 biomethanisation
Fig. S6 Comparison of experimental pH versus PCO2 profile for digesters at 3 g N L-1 with simulated profiles based on Eq. S1 (considering TAN buffer only) and Eq. S10 (considering both TAN and phosphate buffer) during CO2 biomethanisation


Date of data collection: 10 Jan 2018 - 30 Apr 2019

Information about geographic location of data collection: Environment Labs, Building 21, University of Southampton

Licence: CC BY 4.0

Related projects:  IBCat H2AD project, funded by the Engineering and Physical Sciences Research Council (grant ref EP/M028208/1)


Date that the file was created: Apr, 2020