<abstract xmlns="http://www.w3.org/1999/xhtml">Anaerobic co-digestion of dairy cow manure (DCM) and separated tomato greenhouse waste (tomato stalks and leaves (TSL) and rotten and damaged tomato fruits – TF) was conducted under batch thermophilic conditions (<italic>T</italic> = 55 °C) for period of 45 days. Concentrations of substrates (tomato waste) were 5 and 10% (w/v). Each substrate, as well as experimental mixtures, was analysed in order to specify the content of pH, total solids (TS), volatile solids (VS), total extractable nitrogen (TN) and total organic carbon (TOC). Biogas yield and composition, as well as cumulative biogas curves, were reported. In comparison to DCM monodigestion (329.5 cm3·g−1 VS), biogas yield was significantly improved in experiment C (365.1 cm3·g−1 VS) (with 5% (w/v) TF added), whereas methane yield did not show any significant difference. Experiment D (with 10% (w/v) TSL added) resulted in significantly lower biogas and methane yields in contrast to the rest of experiments performed. Average methane content in all analysed experimental samples ranged from 65 to 69%. It is evident from the results that biogas production can be improved by addition of separated tomato greenhouse waste to DCM process and issue of organic waste disposal could be effectively solved.</abstract>

Anaerobic co-digestion of dairy cow manure (DCM) and separated tomato greenhouse waste (tomato stalks and leaves (TSL) and rotten and damaged tomato fruits – TF) was conducted under batch thermophilic conditions (T = 55 °C) for period of 45 days. Concentrations of substrates (tomato waste) were 5 and 10% (w/v). Each substrate, as well as experimental mixtures, was analysed in order to specify the content of pH, total solids (TS), volatile solids (VS), total extractable nitrogen (TN) and total organic carbon (TOC). Biogas yield and composition, as well as cumulative biogas curves, were reported. In comparison to DCM monodigestion (329.5 cm3·g−1 VS), biogas yield was significantly improved in experiment C (365.1 cm3·g−1 VS) (with 5% (w/v) TF added), whereas methane yield did not show any significant difference. Experiment D (with 10% (w/v) TSL added) resulted in significantly lower biogas and methane yields in contrast to the rest of experiments performed. Average methane content in all analysed experimental samples ranged from 65 to 69%. It is evident from the results that biogas production can be improved by addition of separated tomato greenhouse waste to DCM process and issue of organic waste disposal could be effectively solved.

An Assessment of Anaerobic Thermophilic Co-Digestion of Dairy Cattle Manure and Separated Tomato Greenhouse Waste in Lab-Scale Reactors

Acta Technologica Agriculturae

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Anaerobic co-digestion of dairy cow manure (DCM) and separated tomato greenhouse waste (tomato stalks and leaves (TSL) and rotten and damaged tomato fruits –...

An Assessment of Anaerobic Thermophilic Co-Digestion of Dairy Cattle Manure and Separated Tomato Greenhouse Waste in Lab-Scale Reactors

Published Online: Jun 13, 2019

Page range: 38 - 42

DOI: https://doi.org/10.2478/ata-2019-0007

Keywords
anaerobic co-digestion, biogas, dairy cow manure, methane, tomato greenhouse waste

© 2019 Đurđica Kovačić et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

An Assessment of Anaerobic Thermophilic Co-Digestion of Dairy Cattle Manure and Separated Tomato Greenhouse Waste in Lab-Scale Reactors

Published Online: Jun 13, 2019

Page range: 38 - 42

DOI: https://doi.org/10.2478/ata-2019-0007

Keywordsanaerobic co-digestion, biogas, dairy cow manure, methane, tomato greenhouse waste

© 2019 Đurđica Kovačić et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
anaerobic co-digestion, biogas, dairy cow manure, methane, tomato greenhouse waste