Start-up performances of dry anaerobic mesophilic and thermophilic digestions of organic solid wastes

Lu, Shuguang; Imai, Tsuyoshi; Ukita, Masao; Sekine, Masahiko

doi:10.1016/s1001-0742(07)60069-2

Cited by 62 publications

(39 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The rate of hydrolysis of particulate organic matter is determined by the adsorption of hydrolytic enzymes onto the biodegradable surface sites [25,26]. Hydrolysis of lignocellulosic biomass is rate-limiting because of the low cellulolytic activity and low specific growth rate of cellulolytic microbes in anaerobic digesters [27,28]. The first step of corn stalk methane production was the rate-limiting step compared to the second step.…”

Section: Bmp Experimentsmentioning

confidence: 99%

An analysis of single and two stage, mesophilic and thermophilic high rate systems for anaerobic digestion of corn stalk

Meng

Jost

Mumme

et al. 2016

Chemical Engineering Journal

View full text Add to dashboard Cite

General rightsCopyright for the publications made accessible via the Edinburgh Research Explorer is retained by the author(s) and / or other copyright owners and it is a condition of accessing these publications that users recognise and abide by the legal requirements associated with these rights. Take down policyThe University of Edinburgh has made every reasonable effort to ensure that Edinburgh Research Explorer content complies with UK legislation. If you believe that the public display of this file breaches copyright please contact openaccess@ed.ac.uk providing details, and we will remove access to the work immediately and investigate your claim.

show abstract

Section: Bmp Experimentsmentioning

confidence: 99%

An analysis of single and two stage, mesophilic and thermophilic high rate systems for anaerobic digestion of corn stalk

Meng

Jost

Mumme

et al. 2016

Chemical Engineering Journal

View full text Add to dashboard Cite

show abstract

“…Compared with mesophilic digestion, thermophilic digestion is a more feasible process for achieving a better performance, especially during the start-up period of a dry anaerobic digestion system (Lu et al, 2007). During batch digestion of vegetable waste, and wood chips, more rapid degradation of fatty acids was found at 55°C than at 38°C (Hegde and Pullammanappallil, 2007).…”

Section: Temperaturementioning

confidence: 99%

“…The optimum pH for hydrolysis and acidogenesis is between 5.5 and 6.5 (Arshad et al, 2011). During dry anaerobic digestion of organic solid wastes, Lu et al (2007) had found that the pH decreased from the original 6.7 to 4.2 under mesophilic conditions and to 5.8 under thermophilic Jha et al 14247 conditions in the first two weeks due to the lower pH buffering alkalinity (3000 mg/l as CaCO 3 ) in the original mixtures. Subsequently, the pH gradually increased to 7.6 after 4 weeks in the 35°C digester and to 8.0 after 3 weeks in the 55°C digester.…”

Section: Ph and Buffering Capacitymentioning

confidence: 99%

“…The development of anaerobic digestion systems for high solids digestion is impeded by the accumulation of VFAs during start-up phase of the process which results in a pH drop in the system. Thermophilic digestion was found to be a faster process as less butyric and propionate acids were accumulated in comparison to a mesophilic process (Lu et al, 2007). As the degradation of propionate and butyrate are regarded as the rate limiting steps, their accumulation can be mitigated using optimum ratios of propionate-degrading bacteria to butyrate-degrading bacteria among the bulk acetogenic microorganisms (Amani et al, 2011).…”

Section: Volatile Fatty Acidsmentioning

confidence: 99%

See 1 more Smart Citation

Research advances in dry anaerobic digestion process of solid organic wastes

Jha¹,

Li²,

Nies³

et al. 2011

Afr. J. Biotechnol.

View full text Add to dashboard Cite

The dry anaerobic digestion process is an innovative waste-recycling method to treat high-solidcontent bio-wastes. This can be done without dilution with water by microbial consortia in an oxygenfree environment to recover potential renewable energy and nutrient-rich fertilizer for sustainable solid waste management. It generally takes place at solid concentrations higher than 10% and enables a higher volumetric organic loading rate, minimal material handling, lower energy requirements for heating, limited environmental consequences and energetically effective performance. The long retention time, poor startup performance, incomplete mixing and the accumulation of volatile fatty acids (VFAs) are considered as the main disadvantages for the solid-state fermentation process. In order to develop feasible dry anaerobic digestion processes, it is important to review the optimization techniques and suggest possible areas where improvements could be made. These include reactor configuration, mixing, solid retention time, feedstocks, organic loading rate, inoculation, co-digestion, pretreatment, percolation, additives and environmental conditions within the digester such as temperature, pH, buffering capacity and VFAs concentration.

show abstract

“…Głównym zagrożeniem dla środowiska wynikającym z intensywnej produkcji zwierzęcej jest niewłaściwe zagospodarowanie odchodów zwierzęcych [De Bere 2000; Lu et al 2007; Fierro et al 2014]. Uprzemysłowione fermy zwierząt generują ogromne ilości gnojowicy wynikające z bezściółkowego systemu utrzymania, który pozwala na łatwe i szybkie usuwanie nieczystości.…”

unclassified