Enhancing the solid-state anaerobic digestion of fallen leaves through simultaneous alkaline treatment

Lo Niee Liew; Jian Shi; Yebo Li

doi:10.1016/j.biortech.2011.07.005

Enhancing the solid-state anaerobic digestion of fallen leaves through simultaneous alkaline treatment

Lo Niee Liew
, Jian Shi
, Yebo Li

Producción científica: Article › revisión exhaustiva

190 Citas (Scopus)

Resumen

Previous studies have shown that alkali pretreatment prior to anaerobic digestion (AD) can increase the digestibility of lignocellulosic biomass and methane yield. In order to simplify the process and reduce the capital cost, simultaneous alkali treatment and anaerobic digestion was evaluated for methane production from fallen leaves. The highest methane yield of 82. L/kg volatile solids (VS) was obtained at NaOH loading of 3.5% and substrate-to-inoculum (S/I) ratio of 4.1. The greatest enhancement in methane yield was achieved at S/I ratio of 6.2 with NaOH loading of 3.5% which was 24-fold higher than that of the control (without NaOH addition). Reactors at S/I ratio of 8.2 resulted in failure of the AD process. In addition, increasing the total solid (TS) content from 20% to 26% reduced biogas yield by 35% at S/I ratio of 6.2 and NaOH loading of 3.5%. Cellulose and hemicellulose degradation and methane yields are highly related.

Idioma original	English
Páginas (desde-hasta)	8828-8834
Número de páginas	7
Publicación	Bioresource Technology
Volumen	102
N.º	19
DOI	https://doi.org/10.1016/j.biortech.2011.07.005
Estado	Published - oct 2011

Nota bibliográfica

Funding Information:
This project was supported by Ohio Agricultural Research and Development Center (OARDC) Seeds Program ( 2008-043 ) and The Ohio Third Frontier Program ( 10-059 ). The authors thank Mrs. Mary Wicks (Department of Food, Agricultural and Biological Engineering, OSU) for reading through the manuscript and providing useful suggestions.

Financiación

This project was supported by Ohio Agricultural Research and Development Center (OARDC) Seeds Program ( 2008-043 ) and The Ohio Third Frontier Program ( 10-059 ). The authors thank Mrs. Mary Wicks (Department of Food, Agricultural and Biological Engineering, OSU) for reading through the manuscript and providing useful suggestions.

Financiadores	Número del financiador
Ohio Agricultural Research and Development Center	2008-043
Ohio Third Frontier Program	10-059

ODS de las Naciones Unidas

Este resultado contribuye a los siguientes Objetivos de Desarrollo Sostenible

Affordable and clean energy

ASJC Scopus subject areas

Bioengineering
Environmental Engineering
Renewable Energy, Sustainability and the Environment
Waste Management and Disposal

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10.1016/j.biortech.2011.07.005

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title = "Enhancing the solid-state anaerobic digestion of fallen leaves through simultaneous alkaline treatment",

abstract = "Previous studies have shown that alkali pretreatment prior to anaerobic digestion (AD) can increase the digestibility of lignocellulosic biomass and methane yield. In order to simplify the process and reduce the capital cost, simultaneous alkali treatment and anaerobic digestion was evaluated for methane production from fallen leaves. The highest methane yield of 82. L/kg volatile solids (VS) was obtained at NaOH loading of 3.5\% and substrate-to-inoculum (S/I) ratio of 4.1. The greatest enhancement in methane yield was achieved at S/I ratio of 6.2 with NaOH loading of 3.5\% which was 24-fold higher than that of the control (without NaOH addition). Reactors at S/I ratio of 8.2 resulted in failure of the AD process. In addition, increasing the total solid (TS) content from 20\% to 26\% reduced biogas yield by 35\% at S/I ratio of 6.2 and NaOH loading of 3.5\%. Cellulose and hemicellulose degradation and methane yields are highly related.",

keywords = "Alkali pretreatment, Anaerobic digestion, Biogas, Dry fermentation, Leaves",

author = "Liew, \{Lo Niee\} and Jian Shi and Yebo Li",

note = "Funding Information: This project was supported by Ohio Agricultural Research and Development Center (OARDC) Seeds Program ( 2008-043 ) and The Ohio Third Frontier Program ( 10-059 ). The authors thank Mrs. Mary Wicks (Department of Food, Agricultural and Biological Engineering, OSU) for reading through the manuscript and providing useful suggestions. ",

year = "2011",

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doi = "10.1016/j.biortech.2011.07.005",

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AU - Liew, Lo Niee

AU - Shi, Jian

AU - Li, Yebo

N1 - Funding Information: This project was supported by Ohio Agricultural Research and Development Center (OARDC) Seeds Program ( 2008-043 ) and The Ohio Third Frontier Program ( 10-059 ). The authors thank Mrs. Mary Wicks (Department of Food, Agricultural and Biological Engineering, OSU) for reading through the manuscript and providing useful suggestions.

PY - 2011/10

Y1 - 2011/10

N2 - Previous studies have shown that alkali pretreatment prior to anaerobic digestion (AD) can increase the digestibility of lignocellulosic biomass and methane yield. In order to simplify the process and reduce the capital cost, simultaneous alkali treatment and anaerobic digestion was evaluated for methane production from fallen leaves. The highest methane yield of 82. L/kg volatile solids (VS) was obtained at NaOH loading of 3.5% and substrate-to-inoculum (S/I) ratio of 4.1. The greatest enhancement in methane yield was achieved at S/I ratio of 6.2 with NaOH loading of 3.5% which was 24-fold higher than that of the control (without NaOH addition). Reactors at S/I ratio of 8.2 resulted in failure of the AD process. In addition, increasing the total solid (TS) content from 20% to 26% reduced biogas yield by 35% at S/I ratio of 6.2 and NaOH loading of 3.5%. Cellulose and hemicellulose degradation and methane yields are highly related.

AB - Previous studies have shown that alkali pretreatment prior to anaerobic digestion (AD) can increase the digestibility of lignocellulosic biomass and methane yield. In order to simplify the process and reduce the capital cost, simultaneous alkali treatment and anaerobic digestion was evaluated for methane production from fallen leaves. The highest methane yield of 82. L/kg volatile solids (VS) was obtained at NaOH loading of 3.5% and substrate-to-inoculum (S/I) ratio of 4.1. The greatest enhancement in methane yield was achieved at S/I ratio of 6.2 with NaOH loading of 3.5% which was 24-fold higher than that of the control (without NaOH addition). Reactors at S/I ratio of 8.2 resulted in failure of the AD process. In addition, increasing the total solid (TS) content from 20% to 26% reduced biogas yield by 35% at S/I ratio of 6.2 and NaOH loading of 3.5%. Cellulose and hemicellulose degradation and methane yields are highly related.

KW - Alkali pretreatment

KW - Anaerobic digestion

KW - Biogas

KW - Dry fermentation

KW - Leaves

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Enhancing the solid-state anaerobic digestion of fallen leaves through simultaneous alkaline treatment

Resumen

Nota bibliográfica

Financiación

ODS de las Naciones Unidas

ASJC Scopus subject areas

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