Use of bio-based carbon materials for improving biogas yield and digestate stability

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Use of bio-based carbon materials for improving biogas yield and digestate stability. / Yun, Sining; Fang, Wen; Du, Tingting; Hu, Xieli; Huang, Xinlei; Li, Xue; Zhang, Chen; Lund, Peter D.

In: Energy, Vol. 164, 01.12.2018, p. 898-909.

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Yun, Sining ; Fang, Wen ; Du, Tingting ; Hu, Xieli ; Huang, Xinlei ; Li, Xue ; Zhang, Chen ; Lund, Peter D. / Use of bio-based carbon materials for improving biogas yield and digestate stability. In: Energy. 2018 ; Vol. 164. pp. 898-909.

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@article{99ef10c9d59949539fe7058dac61cf19,
title = "Use of bio-based carbon materials for improving biogas yield and digestate stability",
abstract = "Additives can effectively improve the anaerobic digestion performance. In this work, we have investigated the effect of seven carbon materials as additives on the biogas yield, the total chemical oxygen demand (CODt) removal rate and the digestate stability. These carbon materials have larger Brunauer-Emmett-Teller (BET) specific surface area of 580–824 m2/g and uniform pore volume of 0.54–0.64 m3/g. Adding carbon into AD systems can significantly improve the biogas yield (380–502 mL/g TS) and CODt removal rate (51.39{\%}–67.81{\%}) by 30–70{\%} and 74–129{\%}, respectively, compared to the reference system (CK, control check, 294 mL/g TS and 29.55{\%}). Carbon additives with higher BET specific surface area are responsible for improving the AD efficiency by providing sites where substrate accumulate and thereby promote high localized substrate concentrations. Significant improvement in the AD efficiency can be microscopically attributed to the methanogenesis promoted by the conductive carbon that can facilitate direct interspecies electron transfer between fermenting bacteria and methanogens, accelerating syntrophic acetate metabolism and biogas yield. These carbon materials developed are excellent additives in AD for improving the biogas yield, CODt degradation, the stability and the fertilizer utilization of the digestate. These increased properties lead to more efficient use of the waste feedstock in biogas systems.",
keywords = "Additive, Anaerobic digestion, Bio-based carbon materials, Biogas yield, CODt removal rate, Digestate stability",
author = "Sining Yun and Wen Fang and Tingting Du and Xieli Hu and Xinlei Huang and Xue Li and Chen Zhang and Lund, {Peter D.}",
year = "2018",
month = "12",
day = "1",
doi = "10.1016/j.energy.2018.09.067",
language = "English",
volume = "164",
pages = "898--909",
journal = "Energy (the International Journal)",
issn = "0360-5442",

}

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TY - JOUR

T1 - Use of bio-based carbon materials for improving biogas yield and digestate stability

AU - Yun, Sining

AU - Fang, Wen

AU - Du, Tingting

AU - Hu, Xieli

AU - Huang, Xinlei

AU - Li, Xue

AU - Zhang, Chen

AU - Lund, Peter D.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - Additives can effectively improve the anaerobic digestion performance. In this work, we have investigated the effect of seven carbon materials as additives on the biogas yield, the total chemical oxygen demand (CODt) removal rate and the digestate stability. These carbon materials have larger Brunauer-Emmett-Teller (BET) specific surface area of 580–824 m2/g and uniform pore volume of 0.54–0.64 m3/g. Adding carbon into AD systems can significantly improve the biogas yield (380–502 mL/g TS) and CODt removal rate (51.39%–67.81%) by 30–70% and 74–129%, respectively, compared to the reference system (CK, control check, 294 mL/g TS and 29.55%). Carbon additives with higher BET specific surface area are responsible for improving the AD efficiency by providing sites where substrate accumulate and thereby promote high localized substrate concentrations. Significant improvement in the AD efficiency can be microscopically attributed to the methanogenesis promoted by the conductive carbon that can facilitate direct interspecies electron transfer between fermenting bacteria and methanogens, accelerating syntrophic acetate metabolism and biogas yield. These carbon materials developed are excellent additives in AD for improving the biogas yield, CODt degradation, the stability and the fertilizer utilization of the digestate. These increased properties lead to more efficient use of the waste feedstock in biogas systems.

AB - Additives can effectively improve the anaerobic digestion performance. In this work, we have investigated the effect of seven carbon materials as additives on the biogas yield, the total chemical oxygen demand (CODt) removal rate and the digestate stability. These carbon materials have larger Brunauer-Emmett-Teller (BET) specific surface area of 580–824 m2/g and uniform pore volume of 0.54–0.64 m3/g. Adding carbon into AD systems can significantly improve the biogas yield (380–502 mL/g TS) and CODt removal rate (51.39%–67.81%) by 30–70% and 74–129%, respectively, compared to the reference system (CK, control check, 294 mL/g TS and 29.55%). Carbon additives with higher BET specific surface area are responsible for improving the AD efficiency by providing sites where substrate accumulate and thereby promote high localized substrate concentrations. Significant improvement in the AD efficiency can be microscopically attributed to the methanogenesis promoted by the conductive carbon that can facilitate direct interspecies electron transfer between fermenting bacteria and methanogens, accelerating syntrophic acetate metabolism and biogas yield. These carbon materials developed are excellent additives in AD for improving the biogas yield, CODt degradation, the stability and the fertilizer utilization of the digestate. These increased properties lead to more efficient use of the waste feedstock in biogas systems.

KW - Additive

KW - Anaerobic digestion

KW - Bio-based carbon materials

KW - Biogas yield

KW - CODt removal rate

KW - Digestate stability

UR - http://www.scopus.com/inward/record.url?scp=85053436441&partnerID=8YFLogxK

U2 - 10.1016/j.energy.2018.09.067

DO - 10.1016/j.energy.2018.09.067

M3 - Article

AN - SCOPUS:85053436441

VL - 164

SP - 898

EP - 909

JO - Energy (the International Journal)

JF - Energy (the International Journal)

SN - 0360-5442

ER -

ID: 28341112