Different aspects of dry anaerobic digestion for bio-energy: An overview

Kothari, Richa; Pandey, A.K.; Kumar, Sachin; Tyagi, V.V.; Tyagi, S. K.

doi:10.1016/j.rser.2014.07.011

Cited by 313 publications

(196 citation statements)

References 92 publications

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“…Anaerobic digestion is the biological process to convert organic matter into a methane rich biogas [26,43,44]. It is a well-established technology for the treatment of the organic fraction of various waste materials [10,11,13,[45][46][47][48].…”

Section: Anaerobic Digestion Reviewmentioning

confidence: 99%

“…This is particularly true within developing countries due to the lack of other OWHB collection and treatment systems [43,46,47,[56][57][58][59].…”

Section: Anaerobic Digestion Reviewmentioning

confidence: 99%

“…Furthermore, anaerobic treatment minimises the survival of pathogens within OWHB, which is important for using the digested residue as fertiliser with no safety hazard [51]. Finally, biogas drastically reduces air-pollutant-emissions compared to fossil fuels [43,51,62,63].…”

Section: Anaerobic Digestion Reviewmentioning

confidence: 99%

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Biogas Micro-Production from Human Organic Waste—A Research Proposal

et al. 2018

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Organic waste (OW) management tackles the problem of sanitation and hygiene in developing countries and humanitarian camps where unmanaged waste often causes severe health problems and premature death. OW still has a usable energy content, allowing biogas production, potentially contributing to satisfy the local needs, e.g., cooking, lighting and heating. Digesters are the devices converting OW into biogas under anaerobic conditions. They are simple and effective solutions for the OW management in rural areas, humanitarian camps and remote developing regions, producing energy and fertilizers for local farming as residual. This paper describes the design and lab-test of a domestic OW management system integrating a waterless toilet with a small-scale digester producing safe biogas for local micro-consumption. Starting from people's needs and an extensive review of the current state-of-art technology, the proposed system's key innovation and strength is the combination of effectiveness and a very simple construction, set up and use, fitting with the rural conditions and raw materials available within the emerging countries. A small-scale prototype is assembled and lab-tested assessing the quantity-i.e., productivity-and quality-i.e., composition and methane content-of the produced biogas. The measured productivity in terms of specific biogas production (SBP) is of about 0.15 m 3 /kg SV and a methane content of about 74% in mass match the energy needs of domestic users, encouraging the spread of such systems in developing regions and rural areas.

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Section: Anaerobic Digestion Reviewmentioning

confidence: 99%

“…This is particularly true within developing countries due to the lack of other OWHB collection and treatment systems [43,46,47,[56][57][58][59].…”

Section: Anaerobic Digestion Reviewmentioning

confidence: 99%

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Biogas Micro-Production from Human Organic Waste—A Research Proposal

et al. 2018

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“…VFAs are then transformed by acetogenic bacteria into simpler products, including acetic acid, hydrogen and carbon dioxide, during the step known as acetogenesis. These products are finally converted into methane by methanogens [54].…”

Section: Biogas Productionmentioning

confidence: 99%

Combined Biogas and Bioethanol Production: Opportunities and Challenges for Industrial Application

Cesaro

Belgıorno

2015

Energies

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Abstract:In the last decades the increasing energy requirements along with the need to face the consequences of climate change have driven the search for renewable energy sources, in order to replace as much as possible the use of fossil fuels. In this context biomass has generated great interest as it can be converted into energy via several routes, including fermentation and anaerobic digestion. The former is the most common option to produce ethanol, which has been recognized as one of the leading candidates to substitute a large fraction of the liquid fuels produced from oil. As the economic competitiveness of bioethanol fermentation processes has to be enhanced in order to promote its wider implementation, the most recent trends are directed towards the use of fermentation by-products within anaerobic digestion. The integration of both fermentation and anaerobic digestion, in a biorefinery concept, would allow the production of ethanol along with that of biogas, which can be used to produce heat and electricity, thus improving the overall energy balance. This work aims at reviewing the main studies on the combination of both bioethanol and biogas production processes, in order to highlight the strength and weakness of the integrated treatment for industrial application.

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“…The advantages of anaerobic technology in organic matter removal from wastewater have been fully demonstrated in multiple studies and full-scale implementations (Pabón et al, 2013;Kothari et al, 2014;Zhang et al, 2014). However, the successful establishment of the chemical processes involved and the usefulness of the biogas generated therein are significantly affected by the presence of hydrogen sulfide (H 2 S).…”

Section: Introductionmentioning

confidence: 99%

Anaerobic Digestion of Wastewater With High Sulfate Concentration Using Micro-Aeration and Natural Zeolites

Montalvo

Prades

González

et al. 2016

Braz. J. Chem. Eng.

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-The behavior of anaerobic digestion in batch and UASB reactors using a microaerobic process and natural zeolites was studied. Laboratory assays were carried out across 4 sets of variables: different COD/SO 4 2-ratios, different airflow levels, with and without natural zeolites and room and mesophilic controlled temperatures. The microaerobic process demonstrated hydrogen sulfide removal levels exceeding 90% in most cases, while maintaining the flammable condition of the generated biogas. The level of COD removal exceeded 75% in UASB reactors despite their operation under very low hydraulic retention times (2.8-4.8 hours). The effectiveness of natural zeolites in accelerating UASB reactor startup was demonstrated.Results showing the positive influence of zeolites on the granulation process in UASB reactors were also achieved.

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Different aspects of dry anaerobic digestion for bio-energy: An overview

Cited by 313 publications

References 92 publications

Biogas Micro-Production from Human Organic Waste—A Research Proposal

Biogas Micro-Production from Human Organic Waste—A Research Proposal

Combined Biogas and Bioethanol Production: Opportunities and Challenges for Industrial Application

Anaerobic Digestion of Wastewater With High Sulfate Concentration Using Micro-Aeration and Natural Zeolites

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