Dry Anaerobic Digestion for Agricultural Waste Recycling

Riya, Shohei; Meng, Lingyu; Wang, Yuexi; Lee, Chol Gyu; Zhou, Sheng; Toyota, Koki; Hosomi, Masaaki

doi:10.5772/intechopen.91229

Cited by 7 publications

(4 citation statements)

References 116 publications

(142 reference statements)

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“…There was no lag phase in all the digesters as production commenced within the rst 24 hours which was indicative a good start up/hydrolysis stage in the DAD process. It has been observed that operating DAD at a higher F/I ratio could slow down the initial stage as shown elsewhere [10] but the results from this study revealed that the F/I ratios adopted were appropriate for rapid beginning phase of the DAD. Digester DAD6 peaked earlier (day 7) than other digesters with peak production of 280 ml.…”

Section: Daily and Cumulative Biogas Productionmentioning

confidence: 46%

See 1 more Smart Citation

Reaction Kinetics Modelling for Dry Anaerobic Digestion of Hura Crepitans Invasive Species Lignocellulosic Biomass

Olugbemide

Likozar

Oberlintner

et al. 2021

Preprint

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In this research study, the impact of the feedstock to the inoculum (F/I) amount ratio in the dry anaerobic digestion (DAD) of Hura crepitans leaves was evaluated. Measured biogas volumes, as well as the chemical kinetic predictions for exponential, logistic and Gompertz model, depicting the agreement of the simulations over time, were also determined. From the F/I equivalents 2, 4 and 6 at 22 % of packed total solids, which were considered in analysis test procedure, the DAD digester with F/I number 4 was the most promising in terms of biogas’ production rate. Its daily methane/carbon dioxide was 690 mL, while cumulative generation productivity was greater than 2 L/sample, respectively. On the other hand, the DAD reaction with F/I contained 6, recorded the lowest related expressed primary matter of < 1 L. An associated early commencement of the organic material breakdown in all bio vessels was indicative of a good start-up phase, which is one of the challenges, often encountered in DAD process. Furthermore, applied experimental methods revealed the direct correlation phenomena between biodegradability physical constants, measured molecular CH4/CO2 synthesis and simulations. Hura crepitans being an invasive plant species makes its lignocellulosic fractions desired in terms of valorisation, as it is not competing with agricultural crop products. Modelling can, moreover, contribute to consecutive operation optimisation, scaling and integrating, also taking dynamics under consideration. As opposed to bio-refining wood residues, where individual cellulose, hemicellulose or lignin biopolymers can be attained, degradation to yield CH4 is robust, as well as compatible in combustion.

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Section: Daily and Cumulative Biogas Productionmentioning

confidence: 46%

“…Feedstock-to-inoculum ratio plays a signi cant role in process e ciency of DAD. It has been observed that operating DAD at a higher F/I could lead to process failure due to accumulation of volatile fatty acids (VFAs) [10].…”

Section: Introductionmentioning

confidence: 99%

Reaction Kinetics Modelling for Dry Anaerobic Digestion of Hura Crepitans Invasive Species Lignocellulosic Biomass

Olugbemide

Likozar

Oberlintner

et al. 2021

Preprint

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“…It could be obtained from the biological breakdown of organic substances that contain 40%-75% methane (CH 4 ), 15%-60% CO 2 , and trace amounts of hydrogen sulfide (H 2 S), ammonia (NH 3 ), nitrogen (N 2 ), and carbon monoxide (CO). Biogas production is commonly produced using an AD method (Galván-Arzola et al, 2021) by utilising food and garden wastes, landfill, sewage sludge, animal manure (Mong et al, 2020;Zhang et al, 2019), agricultural wastes (Pan et al, 2021a;Riya et al, 2020;Weide et al, 2020), and municipal solid wastes (MSW) (Lopes et al, 2021;Pera et al, 2021;Riya et al, 2020;Zulkifli et al, 2019) as a viable feedstock. LCB may be converted into biogas, which can then be utilised as a RE source for various purposes, including heat and power production.…”

Section: Biochemical Processes Of Lignocellulosic Biomass Utilisationmentioning

confidence: 99%

Lignocellulosic Biomass-Derived Biogas: A Review on Sustainable Energy in Malaysia

AB AZIZ

2024

JOPR

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Lignocellulosic Biomass (LCB) is regarded as a potentially sustainable alternative resource to fossil fuels.To address concerns related to environmental degradation and geopolitical tensions arising from resource scarcity, the global focus shifted towards developing and utilising sustainable and Renewable Energy (RE) technologies. Biogas technology has attracted attention due to its promising potential to generate energy from agro-waste and the preservation of natural resources. Therefore, this review explores the potential of utilising RE, specifically focusing on its practical implementation in Malaysia. It critically evaluates pre-treatment methods suitable for the country's prevalent biomass sources, offering insights into their applicability.Additionally, the article provides updated data on Malaysia's strategy to advance RE production, particularly in biogas. Despite considerable efforts, there is a notable gap in comprehensively assessing the impact of pretreatment methods on LCB in Malaysia's biogas production. Hence, this article critically assesses recent advancements to address this gap, focusing on potential challenges and the comparative effectiveness of treatment techniques in Malaysian biogas production. It is with the aim to shed light on associated drawbacks and suggest means to enhance performance. Finally, this article ends by reviewing economic analyses for pre-treatment in LCB, focusing on efficient biogas production.

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“…The main advantages of dry digestion include its simple and cost-efficient operation, low water requirement, the reduced need for the pretreatment of the feed material, not needing the solid–liquid separation of the digestate, and minimal nutrient loss [ 16 , 17 ]. Three main reactor types exist: the garage (batch), leach-bed (batch with percolation) and horizontal or vertical plug-flow (continuous) types [ 14 , 15 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Digestion of Solid Agricultural Biomass in Leach-Bed Reactors

et al. 2023

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This study focuses on the feasibility of the dry anaerobic digestion of solid agricultural biomass for efficient renewable-energy production and nutrient recycling. Methane production and the amount of nitrogen in the digestates were measured in pilot- and farm-scale leach-bed reactors. In the pilot scale, with a digestion time of 133 days, the methane production of a mixture of whole crop fava bean and horse manure corresponded to 94% and 116%, respectively, of the methane potentials of the solid substrates. The mono-digestion of fava beans resulted in relatively low methane production (production/potential ratios of 59% and 57%). In two full-scale experiments, the methane production of mixtures of clover-grass silage, chicken manure, and horse manure corresponded to 108% and 100% of their respective methane potentials with digestion times of 117 and 185 days. In co-digestion, the production/potential ratios were similar in the pilot and farm experiments. High nitrogen loss was observed in the farm scale when the digestate was stored in a stack covered with a tarpaulin during summertime. Thus, although the technology seems promising, attention needs to be paid to management practices to minimise nitrogen losses and greenhouse gas emissions.

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Dry Anaerobic Digestion for Agricultural Waste Recycling

Cited by 7 publications

References 116 publications

Reaction Kinetics Modelling for Dry Anaerobic Digestion of Hura Crepitans Invasive Species Lignocellulosic Biomass

Reaction Kinetics Modelling for Dry Anaerobic Digestion of Hura Crepitans Invasive Species Lignocellulosic Biomass

Lignocellulosic Biomass-Derived Biogas: A Review on Sustainable Energy in Malaysia

Anaerobic Digestion of Solid Agricultural Biomass in Leach-Bed Reactors

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